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Fusco T, Fattorini S, Fortini L, Ruzzier E, Di Giulio A. Ground spiders (Chelicerata, Araneae) of an urban green space: intensive sampling in a protected area of Rome (Italy) reveals a high diversity and new records to the Italian territory. Biodivers Data J 2024; 12:e122896. [PMID: 38883208 PMCID: PMC11179096 DOI: 10.3897/bdj.12.e122896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Accepted: 05/08/2024] [Indexed: 06/18/2024] Open
Abstract
Background Urbanisation is a rapidly growing global phenomenon leading to habitat destruction, fragmentation and degradation. However, urban areas can offer opportunities for conservation, particularly through the presence of green spaces which can even provide important habitats for imperilled species. Spiders, which play crucial roles in ecosystem functioning, include many species that can successfully exploit urban environments. Placed in the middle of the Mediterranean global biodiversity hotspot, Italy possesses an exceptionally rich spider fauna, yet comprehensive data on urban spider communities are still limited. More information on urban spiders in Italy would be extremely beneficial to support conservation efforts, especially in central and southern Italy, where knowledge on the spider fauna is largely incomplete. New information The current study focused on the spider diversity of a large protected area (Appia Antica Regional Park) in urban Rome, Italy. A total of 120 spider species belonging to 83 genera and 28 families were identified, with 70 species being new records to the Province of Rome, 39 to the Latium Region and two (Pelecopsisdigitulus Bosmans & Abrous, 1992 and Palliduphantesarenicola (Denis, 1964)) to Italy.Forty-one species were recorded during autumn/winter sampling and 107 in spring/summer. The spider fauna recorded from the study area included about 37% of the total spider fauna known from the Province of Rome, 28% of that of the Latium Region and 7% of the entire Italian territory. The most represented families in terms of species richness were Gnaphosidae and Linyphiidae, which accounted for more than 40% of the sampled fauna. Lycosidae were the most abundant family (29% of captured individuals), followed by Zodariidae (16% of captured individuals), Linyphiidae (13% of captured individuals) and Gnaphosidae (7.5% of captured individuals). From a biogeographical point of view, most of the collected species belonged to chorotypes that extend for large areas across Europe and the Mediterranean. The research highlights the role of urban green spaces as refuges for spiders and the importance of arachnological research in urban areas as sources of information on spider biodiversity at larger scales.
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Affiliation(s)
- Tommaso Fusco
- Department of Science, Roma Tre University, Viale G. Marconi 446, Rome, Italy Department of Science, Roma Tre University, Viale G. Marconi 446 Rome Italy
| | - Simone Fattorini
- Università dell'Aquila, Dipartimento di Medicina clinica, sanità pubblica, scienze della vita e dell'ambiente, L'Aquila, Italy Università dell'Aquila, Dipartimento di Medicina clinica, sanità pubblica, scienze della vita e dell'ambiente L'Aquila Italy
| | - Lorenzo Fortini
- Department of Science, Roma Tre University, Viale G. Marconi 446, Rome, Italy Department of Science, Roma Tre University, Viale G. Marconi 446 Rome Italy
| | - Enrico Ruzzier
- Department of Science, Roma Tre University, Viale G. Marconi 446, Rome, Italy Department of Science, Roma Tre University, Viale G. Marconi 446 Rome Italy
- NBFC, National Biodiversity Future Center, Palermo, Italy NBFC, National Biodiversity Future Center Palermo Italy
| | - Andrea Di Giulio
- Department of Science, Roma Tre University, Viale G. Marconi 446, Rome, Italy Department of Science, Roma Tre University, Viale G. Marconi 446 Rome Italy
- NBFC, National Biodiversity Future Center, Palermo, Italy NBFC, National Biodiversity Future Center Palermo Italy
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Piñanez-Espejo YMG, Munévar A, Schilman PE, Zurita GA. It is hot and cold here: the role of thermotolerance in the ability of spiders to colonize tree plantations in the southern Atlantic Forest. Oecologia 2024; 204:789-804. [PMID: 38561554 DOI: 10.1007/s00442-024-05529-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 02/14/2024] [Indexed: 04/04/2024]
Abstract
Worldwide, with the decline of natural habitats, species with reduced niche breadth (specialists) are at greater risk of extinction as they cannot colonise or persist in disturbed habitat types. However, the role of thermal tolerance as a critical trait in understanding changes in species diversity in disturbed habitats, e.g., due to forest replacement by tree plantations, is still understudied. To examine the role of thermal tolerance on the responses of specialist and generalist species to habitat disturbances, we measured and compared local temperature throughout the year and thermotolerance traits [upper (CTmax) and lower (CTmin) thermal limits] of the most abundant species of spiders from different guilds inhabiting pine tree plantations and native Atlantic Forests in South America. Following the thermal adaptation hypothesis, we predicted that generalist species would show a wider thermal tolerance range (i.e., lower CTmin and higher CTmax) than forest specialist species. As expected, generalist species showed significantly higher CTmax and lower CTmin values than specialist species with wider thermal tolerance ranges than forest specialist species. These differences are more marked in orb weavers than in aerial hunter spiders. Our study supports the specialisation disturbance and thermal hypotheses. It highlights that habitat-specialist species are more vulnerable to environmental changes associated with vegetation structure and microclimatic conditions. Moreover, thermal tolerance is a key response trait to explain the Atlantic Forest spider's ability (or inability) to colonise and persist in human-productive land uses.
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Affiliation(s)
- Yolanda M G Piñanez-Espejo
- IBS-Instituto de Biología Subtropical (UNaM-CONICET), Puerto Iguazú, Misiones, Argentina.
- Facultad de Ciencias Forestales, Universidad Nacional de Misiones, Puerto Iguazú, Misiones, Argentina.
| | - Ana Munévar
- IBS-Instituto de Biología Subtropical (UNaM-CONICET), Puerto Iguazú, Misiones, Argentina
- Facultad de Ciencias Forestales, Universidad Nacional de Misiones, Puerto Iguazú, Misiones, Argentina
| | - Pablo E Schilman
- Laboratorio de Ecofisiología de Insectos, Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina.
- CONICET-Instituto de Biodiversidad y Biología Experimental y Aplicada (IBBEA), Buenos Aires, Argentina.
| | - Gustavo Andrés Zurita
- IBS-Instituto de Biología Subtropical (UNaM-CONICET), Puerto Iguazú, Misiones, Argentina.
- Facultad de Ciencias Forestales, Universidad Nacional de Misiones, Puerto Iguazú, Misiones, Argentina.
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3
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Bollinger E, Zubrod JP, Englert D, Graf N, Weisner O, Kolb S, Schäfer RB, Entling MH, Schulz R. The influence of season, hunting mode, and habitat specialization on riparian spiders as key predators in the aquatic-terrestrial linkage. Sci Rep 2023; 13:22950. [PMID: 38135811 PMCID: PMC10746743 DOI: 10.1038/s41598-023-50420-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 12/19/2023] [Indexed: 12/24/2023] Open
Abstract
Freshwater ecosystems subsidize riparian zones with high-quality nutrients via the emergence of aquatic insects. Spiders are dominant consumers of these insect subsidies. However, little is known about the variation of aquatic insect consumption across spiders of different hunting modes, habitat specializations, seasons, and systems. To explore this, we assembled a large stable isotope dataset (n > 1000) of aquatic versus terrestrial sources and six spider species over four points in time adjacent to a lotic and a lentic system. The spiders represent three hunting modes each consisting of a wetland specialist and a habitat generalist. We expected that specialists would feed more on aquatic prey than their generalist counterparts. Mixing models showed that spiders' diet consisted of 17-99% of aquatic sources, with no clear effect of habitat specialization. Averaged over the whole study period, web builders (WB) showed the highest proportions (78%) followed by ground hunters (GH, 42%) and vegetation hunters (VH, 31%). Consumption of aquatic prey was highest in June and August, which is most pronounced in GH and WBs, with the latter feeding almost entirely on aquatic sources during this period. Additionally, the elevated importance of high-quality lipids from aquatic origin during fall is indicated by elemental analyses pointing to an accumulation of lipids in October, which represent critical energy reserves during winter. Consequently, this study underlines the importance of aquatic prey irrespective of the habitat specialization of spiders. Furthermore, it suggests that energy flows vary substantially between spider hunting modes and seasons.
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Affiliation(s)
- Eric Bollinger
- iES Landau, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Fortstraße 7, D-76829, Landau, Germany.
| | - Jochen P Zubrod
- iES Landau, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Fortstraße 7, D-76829, Landau, Germany
- Zubrod Environmental Data Science, Ostring 24a, D-76829, Landau, Germany
| | - Dominic Englert
- iES Landau, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Fortstraße 7, D-76829, Landau, Germany
| | - Nadin Graf
- iES Landau, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Fortstraße 7, D-76829, Landau, Germany
| | - Oliver Weisner
- iES Landau, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Fortstraße 7, D-76829, Landau, Germany
| | - Sebastian Kolb
- iES Landau, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Fortstraße 7, D-76829, Landau, Germany
| | - Ralf B Schäfer
- iES Landau, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Fortstraße 7, D-76829, Landau, Germany
| | - Martin H Entling
- iES Landau, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Fortstraße 7, D-76829, Landau, Germany
| | - Ralf Schulz
- iES Landau, Institute for Environmental Sciences, RPTU Kaiserslautern-Landau, Fortstraße 7, D-76829, Landau, Germany
- Eußerthal Ecosystem Research Station, RPTU Kaiserslautern-Landau, Birkenthalstraße 13, D-76857, Eußerthal, Germany
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Barrientos JA, Prieto CE, Pina S, Henriques SS, Sousa P, Schindler S, Reino L, Beja P, Santana J. Arachnid Fauna (Araneae and Opiliones) from the Castro Verde Special Protection Area, southern Portugal. Biodivers Data J 2023; 11:e110415. [PMID: 38098784 PMCID: PMC10719938 DOI: 10.3897/bdj.11.e110415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 10/25/2023] [Indexed: 12/17/2023] Open
Abstract
Background With the increasing recognition of the significance of arachnid conservation, it is crucial to allocate greater efforts towards implementing targeted monitoring programmes. Despite recent studies, our understanding of arachnid populations in Portugal remains limited. This study serves as the initial inventory of arachnids (Araneae and Opiliones) within the Castro Verde Special Protection Area (SPA) located in Beja, southern Portugal. The surveys were conducted during the spring of 2012 across 80 open grasslands that were grazed by cattle and sheep. New information A total of 71 species of Araneae and two species of Opiliones have been identified. Notably, three spider species, namely Argennasubnigra, Civizelotesibericus and Walckenaeriacucullata, are documented for the first time in Portugal. Additionally, two harvestmen species (Dasylobusibericus and Homalenotusbuchneri) and 14 spider species (Cheiracanthiumpennatum, Haplodrassusrhodanicus, Marinarozelotesminutus, Tapinocybaalgirica, Agraecinalineata, Tibellusmacellus, Talaverapetrensis, Tetragnathaintermedia, Dipoenaumbratilis, Enoplognathadiversa, Neottiurauncinata, Ruborridionmusivum, Theridionpinastri and Xysticusgrallator) are recorded for the first time in the Beja District. The occurrence of each documented species within the SPA, including family and species details, is presented, underscoring the significance of the Castro Verde SPA for arachnid conservation. These findings contribute novel insights into the biodiversity of the Castro Verde SPA, emphasising the necessity of incorporating this area into arachnid diversity conservation efforts.
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Affiliation(s)
- José A. Barrientos
- c/ Balmes, 181, 3º, 2ª. 08006, Barcelona, Spainc/ Balmes, 181, 3º, 2ª. 08006BarcelonaSpain
| | - Carlos E. Prieto
- Departamento de Zoología y Biología Celular Animal, Facultad de Ciencia y Tecnología, Universidad del País Vasco (UPV/EHU). Apdo. 644, 48080, Bilbao, SpainDepartamento de Zoología y Biología Celular Animal, Facultad de Ciencia y Tecnología, Universidad del País Vasco (UPV/EHU). Apdo. 644, 48080BilbaoSpain
| | - Sílvia Pina
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661, Vairão, PortugalCIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661VairãoPortugal
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017, Lisboa, PortugalCIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017LisboaPortugal
| | - Sérgio S Henriques
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017, Lisboa, PortugalCIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017LisboaPortugal
- Global Center for Species Survival, Indianapolis Zoo, Indianapolis, Indiana, United States of AmericaGlobal Center for Species Survival, Indianapolis ZooIndianapolis, IndianaUnited States of America
- International Union for Conservation of Nature (IUCN), Species Survival Commission (SSC), Spider and Scorpion Specialist Group, Gland, SwitzerlandInternational Union for Conservation of Nature (IUCN), Species Survival Commission (SSC), Spider and Scorpion Specialist GroupGlandSwitzerland
| | - Pedro Sousa
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661, Vairão, PortugalCIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661VairãoPortugal
- International Union for Conservation of Nature (IUCN), Species Survival Commission (SSC), Spider and Scorpion Specialist Group, Gland, SwitzerlandInternational Union for Conservation of Nature (IUCN), Species Survival Commission (SSC), Spider and Scorpion Specialist GroupGlandSwitzerland
| | - Stefan Schindler
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661, Vairão, PortugalCIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661VairãoPortugal
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017, Lisboa, PortugalCIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017LisboaPortugal
- Community Ecology and Conservation, Faculty of Environmental Sciences, Community Ecology and Conservation Research Group, Kamýcká 129, CZ-165 00, Prague, Czech RepublicCommunity Ecology and Conservation, Faculty of Environmental Sciences, Community Ecology and Conservation Research Group, Kamýcká 129, CZ-165 00PragueCzech Republic
| | - Luís Reino
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661, Vairão, PortugalCIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661VairãoPortugal
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017, Lisboa, PortugalCIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017LisboaPortugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, PortugalBIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661VairãoPortugal
| | - Pedro Beja
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661, Vairão, PortugalCIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661VairãoPortugal
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017, Lisboa, PortugalCIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017LisboaPortugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, PortugalBIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661VairãoPortugal
| | - Joana Santana
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661, Vairão, PortugalCIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661VairãoPortugal
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017, Lisboa, PortugalCIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017LisboaPortugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, PortugalBIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661VairãoPortugal
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You Y, Yin W, Tembrock LR, Wu Z, Gu X, Yang Z, Zhang C, Zhao Y, Yang Z. Transcriptome sequencing of wolf spider Lycosa sp. (Araneae: Lycosidae) venom glands provides insights into the evolution and diversity of disulfide-rich toxins. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART D, GENOMICS & PROTEOMICS 2023; 48:101145. [PMID: 37748227 DOI: 10.1016/j.cbd.2023.101145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 09/11/2023] [Accepted: 09/16/2023] [Indexed: 09/27/2023]
Abstract
Wolf spiders in the genus Lycosa are important pest predators in agroforestry ecosystems, capable of feeding on a wide range of pests through the use of complex venom which can to quickly immobilize and kill prey. Because of these characteristics the toxins in wolf spiders venom may prove to be natural sources for novel drug development and biopesticides. To better understand the toxins in Lycosa venom we sequenced the transcriptome from venom glands from an undescribed species of Lycosa and comparatively analyzed the data using known protein motifs. A series of 19 disulfide-rich peptide (DRP) toxin sequences were identified and categorized into seven groups based on the number and arrangement of cysteine residues. Notably, we identified three peptide sequences with low identity to any known toxin, which may be toxin peptides specific to this species of Lycosa. In addition, to further understand the evolutionary relationships of disulfide-rich peptide toxins in spider venom, we constructed phylogenetic trees of DRP toxins from three spiders species and found that the Lycosa sp. DRPs are comparatively diverse with previous research results. This study reveals the toxin diversity of wolf spiders (Lycosa sp.) at the transcriptomic level and provides initial insights into the evolution of DRP toxins in spiders, enriching our knowledge of toxin diversity and providing new compounds for functional studies.
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Affiliation(s)
- Yongming You
- Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R & D, Dali University, Dali 671000, China; National-Local Joint Engineering Research Center of Entomoceutics, Dali University, Dali 671000, China; Innovative Team of Dali University for Medicinal Insects & Arachnids Resources Digital Development, Dali 671000, China.
| | - Wenhao Yin
- Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R & D, Dali University, Dali 671000, China; National-Local Joint Engineering Research Center of Entomoceutics, Dali University, Dali 671000, China; Innovative Team of Dali University for Medicinal Insects & Arachnids Resources Digital Development, Dali 671000, China
| | - Luke R Tembrock
- Department of Agricultural Biology, Colorado State University, Fort Collins, CO 80523, USA
| | - Zhiqiang Wu
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Shenzhen 518120, China
| | - Xiaoliang Gu
- Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R & D, Dali University, Dali 671000, China; National-Local Joint Engineering Research Center of Entomoceutics, Dali University, Dali 671000, China; Innovative Team of Dali University for Medicinal Insects & Arachnids Resources Digital Development, Dali 671000, China
| | - Zhibin Yang
- Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R & D, Dali University, Dali 671000, China; National-Local Joint Engineering Research Center of Entomoceutics, Dali University, Dali 671000, China; Innovative Team of Dali University for Medicinal Insects & Arachnids Resources Digital Development, Dali 671000, China
| | - Chenggui Zhang
- Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R & D, Dali University, Dali 671000, China; National-Local Joint Engineering Research Center of Entomoceutics, Dali University, Dali 671000, China; Innovative Team of Dali University for Medicinal Insects & Arachnids Resources Digital Development, Dali 671000, China
| | - Yu Zhao
- Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R & D, Dali University, Dali 671000, China; National-Local Joint Engineering Research Center of Entomoceutics, Dali University, Dali 671000, China; Innovative Team of Dali University for Medicinal Insects & Arachnids Resources Digital Development, Dali 671000, China
| | - Zizhong Yang
- Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R & D, Dali University, Dali 671000, China; National-Local Joint Engineering Research Center of Entomoceutics, Dali University, Dali 671000, China; Innovative Team of Dali University for Medicinal Insects & Arachnids Resources Digital Development, Dali 671000, China.
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6
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Ganem Z, Ferrante M, Lubin Y, Armiach Steinpress I, Gish M, Sharon R, Harari AR, Keasar T, Gavish-Regev E. Effects of Natural Habitat and Season on Cursorial Spider Assemblages in Mediterranean Vineyards. INSECTS 2023; 14:782. [PMID: 37887794 PMCID: PMC10607350 DOI: 10.3390/insects14100782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 09/19/2023] [Accepted: 09/22/2023] [Indexed: 10/28/2023]
Abstract
Natural habitats adjacent to vineyards are presumed to have a positive effect on the diversity of natural enemies within the vineyards. However, these habitats differ in vegetation structure and seasonal phenology and in turn could affect the species composition of natural enemies. Here, we compared the species richness and diversity and the composition of spider assemblages in several locations within three commercial vineyards and the nearby natural habitats in a Mediterranean landscape in northern Israel. We sampled spiders by means of pitfall traps in early and in late summer. Both the time in the season and the habitat (natural versus vineyard) affected spider species richness and diversity. More species were found in early summer (47) than in late summer (33), and more occurred in the natural habitat (34 species) than in the vineyards (27-31 species). Fifteen species were found exclusively in the natural habitat, and only 11 species were shared by the vineyards and natural habitat, four of which were the most abundant and geographically widely distributed species in the samples. In late summer, spider diversity in the natural habitat was higher than within the vineyards: the spider assemblages in the vineyards became dominated by a few species late in the crop season, while those of the natural habitat remained stable. Overall, the natural habitat differed in assemblage composition from all within-vineyard locations, while the three locations within the vineyard did not differ significantly in assemblage composition. Season (early vs. late summer), however, significantly affected the spider assemblage composition. This study documents the large diversity of spiders in a local Mediterranean vineyard agroecosystem. Over 60% of the known spider families in the region occurred in our samples, highlighting the importance of this agroecosystem for spider diversity and the potential for conservation biocontrol, where natural habitats may be a source of natural enemies for nearby vineyards.
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Affiliation(s)
- Zeana Ganem
- The National Natural History Collections, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
- School of Environmental Sciences, University of Haifa, Haifa 3103301, Israel
| | - Marco Ferrante
- Centre for Ecology, Evolution and Environmental Changes (cE3c), Azorean Biodiversity Group, Faculty of Agriculture and Environment, University of the Azores, Angra do Heroísmo, 9700-042 Azores, Portugal
- Mitrani Department of Desert Ecology, Ben-Gurion University of the Negev, Midreshet Ben-Gurion 8499000, Israel
| | - Yael Lubin
- Mitrani Department of Desert Ecology, Ben-Gurion University of the Negev, Midreshet Ben-Gurion 8499000, Israel
| | - Igor Armiach Steinpress
- The National Natural History Collections, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
| | - Moshe Gish
- School of Environmental Sciences, University of Haifa, Haifa 3103301, Israel
| | - Rakefet Sharon
- Northern R&D, MIGAL-Galilee Technology Center and Tel-Hai Academic College, Qiryat Shemona 1220800, Israel
| | - Ally R Harari
- Department of Entomology, Agricultural Research Organization, The Volcani Center, Bet Dagan 7505101, Israel
| | - Tamar Keasar
- Department of Biology and the Environment, University of Haifa-Oranim, Tivon 3600600, Israel
| | - Efrat Gavish-Regev
- The National Natural History Collections, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
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7
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Suzuki SS, Baba YG, Toju H. Dynamics of species-rich predator-prey networks and seasonal alternations of core species. Nat Ecol Evol 2023; 7:1432-1443. [PMID: 37460838 DOI: 10.1038/s41559-023-02130-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Accepted: 06/16/2023] [Indexed: 09/08/2023]
Abstract
In nature, entangled webs of predator-prey interactions constitute the backbones of ecosystems. Uncovering the network architecture of such trophic interactions has been recognized as the essential step for exploring species with great impacts on ecosystem-level phenomena and functions. However, it has remained a major challenge to reveal how species-rich networks of predator-prey interactions are continually reshaped through time in the wild. Here, we show that dynamics of species-rich predator-prey interactions can be characterized by remarkable network structural changes and alternations of species with greatest impacts on community processes. On the basis of high-throughput detection of prey DNA from 1,556 spider individuals collected in a grassland ecosystem, we reconstructed dynamics of interaction networks involving, in total, 50 spider species and 974 prey species and strains through 8 months. The networks were compartmentalized into modules (groups) of closely interacting predators and prey in each month. Those modules differed in detritus/grazing food chain properties, forming complex fission-fusion dynamics of belowground and aboveground energy channels across the seasons. The substantial shifts of network structure entailed alternations of spider species located at the core positions within the entangled webs of interactions. These results indicate that knowledge of dynamically shifting food webs is crucial for understanding temporally varying roles of 'core species' in ecosystem processes.
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Affiliation(s)
- Sayaka S Suzuki
- Center for Ecological Research, Kyoto University, Otsu, Japan.
| | - Yuki G Baba
- Institute for Agro-Environmental Sciences, NARO, Tsukuba, Japan
| | - Hirokazu Toju
- Center for Ecological Research, Kyoto University, Otsu, Japan.
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8
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Butz EM, Schmitt LM, Parker JD, Burghardt KT. Positive tree diversity effects on arboreal spider abundance are tied to canopy cover in a forest experiment. Ecology 2023; 104:e4116. [PMID: 37263980 DOI: 10.1002/ecy.4116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 05/17/2023] [Accepted: 05/25/2023] [Indexed: 06/03/2023]
Abstract
Human actions are decreasing the diversity and complexity of forests, and a mechanistic understanding of how these changes affect predators is needed to maintain ecosystem services, including pest regulation. Using a large-scale tree diversity experiment, we investigate how spiders respond to trees growing in plots of single or mixed species combinations (4 or 12) by repeatedly sampling 540 trees spanning 15 species. In 2019 (6 years post-establishment), spider responses to tree diversity varied by tree species. By 2021, diversity had a more consistently positive effect, with trees in 4- or 12-species plots supporting 23% or 50% more spiders, respectively, compared to conspecifics in monocultures. Spiders showed stronger tree species preferences in late summer, and the positive impact of plot diversity doubled. In early summer, the positive diversity effect was tied to higher canopy cover in diverse plots, leading to higher spider densities. This indirect path strengthened in late summer, with an additional direct effect of plot diversity on spiders. Prey availability was higher in diverse plots but was not tied to spider density. Overall, diverse plots supported more predators, partly by increasing available habitat. Adopting planting strategies focused on species mixtures may better maintain higher trophic levels and ecosystem functions.
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Affiliation(s)
- Elizabeth M Butz
- Department of Entomology, University of Maryland, College Park, Maryland, USA
| | - Lauren M Schmitt
- Department of Entomology, University of Maryland, College Park, Maryland, USA
| | - John D Parker
- Smithsonian Environmental Research Center, Edgewater, Maryland, USA
| | - Karin T Burghardt
- Department of Entomology, University of Maryland, College Park, Maryland, USA
- Smithsonian Environmental Research Center, Edgewater, Maryland, USA
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9
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Herzog C, Reeves JT, Ipek Y, Jilling A, Hawlena D, Wilder SM. Multi-elemental consumer-driven nutrient cycling when predators feed on different prey. Oecologia 2023; 202:729-742. [PMID: 37552361 DOI: 10.1007/s00442-023-05431-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 07/31/2023] [Indexed: 08/09/2023]
Abstract
Predators play a fundamental role in cycling nutrients through ecosystems, by altering the amount and compositions of waste products and uneaten prey parts available to decomposers. Different prey can vary in their elemental content and the deposition of elements in predator waste can vary depending on which elements are preferentially retained versus eliminated as waste products. We tested how feeding on different prey (caterpillars, cockroaches, crickets, and flies) affected the concentrations of 23 elements in excreta deposited by wolf spider across 2 seasons (spring versus fall). Spider excreta had lower concentrations of carbon and higher concentrations of many other elements (Al, B, Ba, K, Li, P, S, Si, and Sr) compared to prey remains and whole prey carcasses. In addition, elemental concentrations in unconsumed whole prey carcasses and prey remains varied between prey species, while spider excreta had the lowest variation among prey species. Finally, the concentrations of elements deposited differed between seasons, with wolf spiders excreting greater concentrations of Fe, Mg, Mn, Mo, S, and V in the fall. However, in the spring, spiders excreted higher concentrations of Al, B, Ba, Ca, Cd, Cu, K, P, Na, Si, Sr, and Zn. These results highlight that prey identity and environmental variation can determine the role that predators play in regulating the cycling of many elements. A better understanding of these convoluted nutritional interactions is critical to disentangle specific consumer-driven effects on ecosystem function.
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Affiliation(s)
- Colton Herzog
- Department of Integrative Biology, Oklahoma State University, Stillwater, USA.
| | - Jacob T Reeves
- Department of Integrative Biology, Oklahoma State University, Stillwater, USA
| | - Yetkin Ipek
- Department of Integrative Biology, Oklahoma State University, Stillwater, USA
| | - Andrea Jilling
- Department of Plant and Soil Sciences, Oklahoma State University, Stillwater, USA
| | - Dror Hawlena
- Department of Ecology, Evolution and Behavior, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Shawn M Wilder
- Department of Integrative Biology, Oklahoma State University, Stillwater, USA
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10
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McLean CA, Melville J, Schubert J, Rose R, Medina I. Assessing the impact of fire on spiders through a global comparative analysis. Proc Biol Sci 2023; 290:20230089. [PMID: 37122254 PMCID: PMC10130718 DOI: 10.1098/rspb.2023.0089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 03/20/2023] [Indexed: 05/02/2023] Open
Abstract
In many regions fire regimes are changing due to anthropogenic factors. Understanding the responses of species to fire can help to develop predictive models and inform fire management decisions. Spiders are a diverse and ubiquitous group and can offer important insights into the impacts of fire on invertebrates and whether these depend on environmental factors, phylogenetic history or functional traits. We conducted phylogenetic comparative analyses of data from studies investigating the impacts of fire on spiders. We investigated whether fire affects spider abundance or presence and whether ecologically relevant traits or site-specific factors influence species' responses to fire. Although difficult to make broad generalizations about the impacts of fire due to variation in site- and fire-specific factors, we find evidence that short fire intervals may be a threat to some spiders, and that fire affects abundance and species compositions in forests relative to other vegetation types. Orb and sheet web weavers were also more likely to be absent after fire than ambush hunters, ground hunters and other hunters suggesting functional traits may affect responses. Finally, we show that analyses of published data can be used to detect broad-scale patterns and provide an alternative to traditional meta-analytical approaches.
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Affiliation(s)
- Claire A. McLean
- Sciences Department, Museums Victoria, 11 Nicholson Street, Carlton, VIC 3053, Australia
| | - Jane Melville
- Sciences Department, Museums Victoria, 11 Nicholson Street, Carlton, VIC 3053, Australia
- School of Biological Sciences, Monash University, Clayton, VIC 3800, Australia
| | - Joseph Schubert
- Sciences Department, Museums Victoria, 11 Nicholson Street, Carlton, VIC 3053, Australia
| | - Rebecca Rose
- Sciences Department, Museums Victoria, 11 Nicholson Street, Carlton, VIC 3053, Australia
| | - Iliana Medina
- School of BioSciences, The University of Melbourne, Royal Parade, Parkville, VIC 3010, Australia
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11
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Harvey JA, Dong Y. Climate Change, Extreme Temperatures and Sex-Related Responses in Spiders. BIOLOGY 2023; 12:biology12040615. [PMID: 37106814 PMCID: PMC10136024 DOI: 10.3390/biology12040615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 04/06/2023] [Accepted: 04/14/2023] [Indexed: 04/29/2023]
Abstract
Climatic extremes, such as heat waves, are increasing in frequency, intensity and duration under anthropogenic climate change. These extreme events pose a great threat to many organisms, and especially ectotherms, which are susceptible to high temperatures. In nature, many ectotherms, such as insects, may seek cooler microclimates and 'ride out´ extreme temperatures, especially when these are transient and unpredictable. However, some ectotherms, such as web-building spiders, may be more prone to heat-related mortality than more motile organisms. Adult females in many spider families are sedentary and build webs in micro-habitats where they spend their entire lives. Under extreme heat, they may be limited in their ability to move vertically or horizontally to find cooler microhabitats. Males, on the other hand, are often nomadic, have broader spatial distributions, and thus might be better able to escape exposure to heat. However, life-history traits in spiders such as the relative body size of males and females and spatial ecology also vary across different taxonomic groups based on their phylogeny. This may make different species or families more or less susceptible to heat waves and exposure to very high temperatures. Selection to extreme temperatures may drive adaptive responses in female physiology, morphology or web site selection in species that build small or exposed webs. Male spiders may be better able to avoid heat-related stress than females by seeking refuge under objects such as bark or rocks with cooler microclimates. Here, we discuss these aspects in detail and propose research focusing on male and female spider behavior and reproduction across different taxa exposed to temperature extremes.
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Affiliation(s)
- Jeffrey A Harvey
- Department of Terrestrial Ecology, Netherlands Institute of Ecology, Droevendaalsesteeg 10, 6708 PB Wageningen, The Netherlands
- Department of Ecological Sciences, Section Animal Ecology, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands
| | - Yuting Dong
- Department of Terrestrial Ecology, Netherlands Institute of Ecology, Droevendaalsesteeg 10, 6708 PB Wageningen, The Netherlands
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12
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Chatelain M, Rüdisser J, Traugott M. Urban-driven decrease in arthropod richness and diversity associated with group-specific changes in arthropod abundance. Front Ecol Evol 2023. [DOI: 10.3389/fevo.2023.980387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023] Open
Abstract
Habitat loss and fragmentation caused by land-use changes in urbanised landscapes are main drivers of biodiversity loss and changes in species assemblages. While the effects of urbanisation on arthropods has received increasing attention in the last decade, most of the studies were taxon-specific, limited in time and/or covering only part of the habitats along the rural-urban gradient. To comprehensively assess the effects of urbanisation on arthropod communities, here, we sampled arthropods at 180 sites within an urban mosaic in the city of Innsbruck (Austria) using a systematic grid. At each site, arthropods were collected in three micro-habitats: the canopy, the bush layer and tree bark. They were identified to the family, infra-order or order level, depending on the taxonomic group. Urbanisation level was estimated by five different proxies extracted from land use/land cover data (e.g., impervious surface cover), all of them calculated in a 100, 500, and 1,000 m radius around the sampling points, and three indexes based on distance to settlements. We tested for the effects of different levels of urbanisation on (i) overall arthropod abundance, richness and diversity and (ii) community composition using redundancy analyses. In the canopy and the bush layer, arthropod richness and diversity decreased with increasing urbanisation level, suggesting that urbanisation acts as a filter on taxonomic groups. Our data on arthropod abundance further support this hypothesis and suggest that urbanisation disfavours wingless groups, particularly so on trees. Indeed, urbanisation was correlated to lower abundances of spiders and springtails, but higher abundances of aphids, barklice and flies. Arthropod community composition was better explained by a set of urbanisation proxies, especially impervious surface cover measured in a 100, 500, and 1,000 m radius. Arthropods are key elements of food webs and their availability in urban environments is expected to have bottom-up effects, thus shaping foraging behaviour, distribution, and/or success of species at higher trophic levels. Studying ecological networks in urban ecosystems is the next step that will allow to understand how urbanisation alters biodiversity.
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13
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Spider Diversity in the Fragmented Forest-Steppe Landscape of Northeastern Ukraine: Temporal Changes under the Impact of Human Activity. DIVERSITY 2023. [DOI: 10.3390/d15030351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Abstract
Semi-natural forests and dry grasslands are highly fragmented and influenced by human activity. Despite the small area, they serve as the refuge for habitat-specific species and enhance agrolandscape biodiversity. We studied spiders in Velykoburlutskyi Steppe Regional Landscape Park (northeastern Ukraine) for 10 years and found 224 species of 26 families; of these, 27 are rare and require protection. The araneofauna of small forests in gullies is poorer than that of the large oakeries and hosts fewer sylvatic species; the dry grassland fauna is rich, has typical steppe traits, and varies depending on topography and grazing history. The ungrazed gully hosted 125 spider species. The richest assemblages (97 species) were at the bottom, and they were similar to those of meadows and forest edges. The most typical steppe assemblages were formed on the ungrazed slope (77 species). The human-induced disturbance had a negative effect on spiders: we found only 63 species at the grazed bottom and 62 on the slope. After abrupt grazing cessation, four spider species appeared and occurred constantly at the bottom, while no species left this habitat. Grazing on the slopes declined gradually, and spider assemblages did not change significantly after the final cessation; moreover, they enriched on the abandoned slope (75 species). The presence of rare species and a variety of spider assemblages confirm the conservation value of the study site and the need to maintain its mosaic pattern.
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14
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Samu F, Szita É, Botos E, Simon J, Gallé-Szpisjak N, Gallé R. Agricultural spider decline: long-term trends under constant management conditions. Sci Rep 2023; 13:2305. [PMID: 36759542 PMCID: PMC9911793 DOI: 10.1038/s41598-023-29003-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 01/27/2023] [Indexed: 02/11/2023] Open
Abstract
There is widespread evidence for a worldwide trend of insect decline, but we have much fewer data about recent temporal trends in other arthropod groups, including spiders. Spiders can be hypothesised to similarly decline because of trophic dependence on insects and being equally sensitive to local and global environmental changes. Background trends in arthropod populations can be verified if we decouple large-scale environmental transitions, such as climate change, from local factors. To provide a case study on baseline spider community trends, we observed changes in the spider community of an unsprayed alfalfa field and its margin 23 years apart under largely unchanged local conditions. We aimed to determine whether there are changes in spider abundance, species richness and mean species characteristics. Spider abundance per unit effort decreased dramatically, by 45% in alfalfa and by 59% in the margin, but species richness and most characteristics remained unchanged. Community composition in both habitats shifted and became more similar by the current study period. The population decline was especially marked in certain farmland species. We propose that in the absence of local causative factors, spider abundance decline in our study indicates a reduction of spider populations at landscape and regional scales.
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Affiliation(s)
- F Samu
- Plant Protection Institute, Centre of Agricultural Research, ELKH, Herman Ottó Street 15, 1022, Budapest, Hungary
| | - É Szita
- Plant Protection Institute, Centre of Agricultural Research, ELKH, Herman Ottó Street 15, 1022, Budapest, Hungary.
| | - E Botos
- Plant Protection Institute, Centre of Agricultural Research, ELKH, Herman Ottó Street 15, 1022, Budapest, Hungary
| | - J Simon
- Plant Protection Institute, Centre of Agricultural Research, ELKH, Herman Ottó Street 15, 1022, Budapest, Hungary
| | - N Gallé-Szpisjak
- 'Lendület' Landscape and Conservation Ecology, Institute of Ecology and Botany, Centre for Ecological Research, 2163, Vácrátót, Hungary
| | - R Gallé
- 'Lendület' Landscape and Conservation Ecology, Institute of Ecology and Botany, Centre for Ecological Research, 2163, Vácrátót, Hungary.,MTA-SZTE 'Momentum' Applied Ecology Research Group, Közép Fasor 52, 6726, Szeged, Hungary
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15
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Li Y, Du YB, Chen JT, Wang MQ, Guo SK, Schuldt A, Luo A, Guo PF, Mi XC, Liu XJ, Ma KP, Bruelheide H, Chesters D, Liu X, Zhu CD. Tree dissimilarity determines multi-dimensional beta-diversity of herbivores and carnivores via bottom-up effects. J Anim Ecol 2023; 92:442-453. [PMID: 36507573 DOI: 10.1111/1365-2656.13868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 12/01/2022] [Indexed: 12/14/2022]
Abstract
Global biodiversity decline and its cascading effects through trophic interactions pose a severe threat to human society. Establishing the impacts of biodiversity decline requires a more thorough understanding of multi-trophic interactions and, more specifically, the effects that loss of diversity in primary producers has on multi-trophic community assembly. Within a synthetic conceptual framework for multi-trophic beta-diversity, we tested a series of hypotheses on neutral and niche-based bottom-up processes in assembling herbivore and carnivore communities in a subtropical forest using linear models, hieratical variance partitioning based on linear mixed-effects models (LMMs) and simulation. We found that the observed taxonomic, phylogenetic and functional beta-diversity of both herbivorous caterpillars and carnivorous spiders were significantly and positively related to tree dissimilarity. Linear models and variance partitioning for LMMs jointly suggested that as a result of bottom-up effects, producer dissimilarities were predominant in structuring consumer dissimilarity, the strength of which highly depended on the trophic dependencies on producers, the diversity facet examined, and data quality. Importantly, linear models for standardized beta-diversities against producer dissimilarities implied a transition between niche-based processes such as environmental filtering and competitive exclusion, which supports the role of bottom-up effect in determining consumer community assembly. These findings enrich our mechanistic understanding of the 'Diversity Begets Diversity' hypothesis and the complexity of higher-trophic community assembly, which is fundamental for sustainable biodiversity conservation and ecosystem management.
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Affiliation(s)
- Yi Li
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China
| | - Yuan-Bao Du
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Jing-Ting Chen
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,College of Biological Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Ming-Qiang Wang
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Shi-Kun Guo
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,College of Biological Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Andreas Schuldt
- Forest Nature Conservation, Georg-August-University Göttingen, Göttingen, Germany
| | - Arong Luo
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Peng-Fei Guo
- College of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Xiang-Cheng Mi
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China
| | - Xiao-Juan Liu
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China
| | - Ke-Ping Ma
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China.,College of Biological Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Helge Bruelheide
- Institute of Biology/Geobotany and Botanical Garden, Martin Luther University Halle-Wittenberg, Halle, Germany.,German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
| | - Douglas Chesters
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Xuan Liu
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,College of Biological Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Chao-Dong Zhu
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,College of Biological Sciences, University of Chinese Academy of Sciences, Beijing, China.,State Key Laboratory of Integrated Pest Management, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
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16
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Baza-Moreno JD, Vega-Alvarado L, Ibarra-Núñez G, Guillén-Navarro K, García-Fajardo LV, Jiménez-Jacinto V, Diego-García E. Transcriptome analysis of the spider Phonotimpus pennimani reveals novel toxin transcripts. J Venom Anim Toxins Incl Trop Dis 2023; 29:e20220031. [PMID: 36721428 PMCID: PMC9881743 DOI: 10.1590/1678-9199-jvatitd-2022-0031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 12/12/2022] [Indexed: 01/28/2023] Open
Abstract
Background Phonotimpus pennimani (Araneae, Phrurolithidae) is a small-sized (3-5 mm) spider endemic to the Tacaná volcano in Chiapas, Mexico, where it is found in soil litter of cloud forests and coffee plantations. Its venom composition has so far not been investigated, partly because it is not a species of medical significance. However, it does have an important impact on the arthropod populations of its natural habitat. Methods Specimens were collected in Southeastern Mexico (Chiapas) and identified taxonomically by morphological characteristics. A partial sequence from the mitochondrial gene coxI was amplified. Sequencing on the Illumina platform of a transcriptome library constructed from 12 adult specimens revealed 25 toxin or toxin-like genes. Transcripts were validated (RT-qPCR) by assessing the differential expression of the toxin-like PpenTox1 transcript and normalising with housekeeping genes. Results Analysis of the coxI-gene revealed a similarity to other species of the family Phrurolithidae. Transcriptome analysis also revealed similarity with venom components of species from the families Ctenidae, Lycosidae, and Sicariidae. Expression of the toxin-like PpenTox1 gene was different for each developmental stage (juvenile or adult) and also for both sexes (female or male). Additionally, a partial sequence was obtained for the toxin-like PpenTox1 from DNA. Conclusion Data from the amplification of the mitochondrial coxI gene confirmed that P. pennimani belongs to the family Phrurolithidae. New genes and transcripts coding for venom components were identified.
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Affiliation(s)
- Jonathan David Baza-Moreno
- Grupo Académico de Biotecnología Ambiental, Departamento de Ciencias
de la Sustentabilidad, El Colegio de la Frontera Sur (ECOSUR), Tapachula de Córdova
y Ordoñez, Chiapas, Mexico
| | - Leticia Vega-Alvarado
- Instituto de Ciencias Aplicadas y Tecnología, Universidad Nacional
Autónoma de México (UNAM), Ciudad de Mexico, Mexico
| | - Guillermo Ibarra-Núñez
- Grupo Académico de Ecología de Artrópodos y Manejo de Plagas,
Departamento de Agricultura, Sociedad y Ambiente, El Colegio de la Frontera Sur
(ECOSUR), Tapachula de Córdova y Ordoñez, Chiapas, Mexico
| | - Karina Guillén-Navarro
- Grupo Académico de Biotecnología Ambiental, Departamento de Ciencias
de la Sustentabilidad, El Colegio de la Frontera Sur (ECOSUR), Tapachula de Córdova
y Ordoñez, Chiapas, Mexico
| | - Luz Verónica García-Fajardo
- Grupo Académico de Biotecnología Ambiental, Departamento de Ciencias
de la Sustentabilidad, El Colegio de la Frontera Sur (ECOSUR), Tapachula de Córdova
y Ordoñez, Chiapas, Mexico
| | - Verónica Jiménez-Jacinto
- Instituto de Biotecnología, Universidad Nacional Autónoma de México
(UNAM), Cuernavaca, Morelos, Mexico
| | - Elia Diego-García
- Grupo Académico de Biotecnología Ambiental, Departamento de Ciencias
de la Sustentabilidad, El Colegio de la Frontera Sur (ECOSUR), Tapachula de Córdova
y Ordoñez, Chiapas, Mexico.,Investigadora CONACyT - ECOSUR, Consejo Nacional de Ciencia y
Técnología, Ciudad de Mexico, Mexico.,Correspondence:
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17
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Fei M, Gols R, Harvey JA. The Biology and Ecology of Parasitoid Wasps of Predatory Arthropods. ANNUAL REVIEW OF ENTOMOLOGY 2023; 68:109-128. [PMID: 36198401 DOI: 10.1146/annurev-ento-120120-111607] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Parasitoid wasps are important components of insect food chains and have played a central role in biological control programs for over a century. Although the vast majority of parasitoids exploit insect herbivores as hosts, others parasitize predatory insects and arthropods, such as ladybird beetles, hoverflies, lacewings, ground beetles, and spiders, or are hyperparasitoids. Much of the research on the biology and ecology of parasitoids of predators has focused on ladybird beetles, whose parasitoids may interfere with the control of insect pests like aphids by reducing ladybird abundance. Alternatively, parasitoids of the invasive ladybird Harmonia axyridis may reduce its harmful impact on native ladybird populations. Different life stages of predatory insects and spiders are susceptible to parasitism to different degrees. Many parasitoids of predators exhibit intricate physiological interrelationships with their hosts, adaptively manipulating host behavior, biology, and ecology in ways that increase parasitoid survival and fitness.
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Affiliation(s)
- Minghui Fei
- Department of Entomology, College of Plant Protection, Nanjing Agricultural University, Nanjing, People's Republic of China;
| | - Rieta Gols
- Laboratory of Entomology, Wageningen University, Wageningen, The Netherlands;
| | - Jeffrey A Harvey
- Department of Terrestrial Ecology, Netherlands Institute of Ecology, Wageningen, The Netherlands;
- Animal Ecology Section, Department of Ecological Sciences, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
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18
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Ellsworth E, Li Y, Chari LD, Kron A, Moyo S. Tangled in a Web: Management Type and Vegetation Shape the Occurrence of Web-Building Spiders in Protected Areas. INSECTS 2022; 13:insects13121129. [PMID: 36555039 PMCID: PMC9784479 DOI: 10.3390/insects13121129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/02/2022] [Accepted: 12/03/2022] [Indexed: 05/12/2023]
Abstract
Land management of parks and vegetation complexity can affect arthropod diversity and subsequently alter trophic interactions between predators and their prey. In this study, we examined spiders in five parks with varying management histories and intensities to determine whether certain spider species were associated with particular plants. We also determined whether web architecture influenced spider occurrence. Our results showed that humpbacked orb-weavers (Eustala anastera) were associated with an invasive plant, Chinese privet (Ligustrum sinense). This study revealed how invasive plants can potentially influence certain spider communities, as evidenced by this native spider species only occurring on invasive plants. Knowing more about spider populations-including species makeup and plants they populate-will give insights into how spider populations are dealing with various ecosystem changes. While we did not assess the effect of invasive plants on the behavior of spiders, it is possible that invasive species may not always be harmful to ecosystems; in the case of spiders, invasive plants may serve as a useful environment to live in. More studies are needed to ascertain whether invasive plants can have adverse effects on spider ecology in the long term.
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Affiliation(s)
- El Ellsworth
- Department of Biology and Program in Environmental Studies and Sciences, Rhodes College, Memphis, TN 38112, USA
| | - Yihan Li
- Department of Biology and Program in Environmental Studies and Sciences, Rhodes College, Memphis, TN 38112, USA
| | - Lenin D. Chari
- Department of Zoology and Entomology, Rhodes University, Makhanda 6140, South Africa
| | - Aidan Kron
- Department of Biology and Program in Environmental Studies and Sciences, Rhodes College, Memphis, TN 38112, USA
| | - Sydney Moyo
- Department of Biology and Program in Environmental Studies and Sciences, Rhodes College, Memphis, TN 38112, USA
- Correspondence:
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19
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Pascoe P, Houghton M, Jones HP, Weldrick C, Trebilco R, Shaw J. The effect of seabird presence and seasonality on ground-active spider communities across temperate islands. Ecol Evol 2022; 12:e9570. [PMID: 36479030 PMCID: PMC9719043 DOI: 10.1002/ece3.9570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 10/27/2022] [Accepted: 11/02/2022] [Indexed: 03/24/2024] Open
Abstract
Seabirds influence island ecosystems through nutrient additions and physical disturbance. These influences can have opposing effects on an island's invertebrate predator populations. Spiders (order: Araneae) are an important predator in many terrestrial island ecosystems, yet little is known about how seabird presence influences spider communities at the intraisland scale, or how they respond to seasonality in seabird colony attendance.We investigated the effects of seabird presence and seasonality on ground-active spider community structure (activity-density, family-level richness, age class, and sex structure) and composition at the family-level across five short-tailed shearwater breeding islands around south-eastern Tasmania, Australia. Using 75 pitfall traps (15 per island), spiders were collected inside, near, and outside seabird colonies on each island, at five different stages of the short-tailed shearwater breeding cycle over a year. Pitfall traps were deployed for a total of 2674 days, capturing 1592 spiders from 26 families with Linyphiidae and Lycosidae the most common. Spider activity-density was generally greater inside than outside seabird colonies, while family-level richness was generally higher outside seabird colonies. For these islands, seabird breeding stage did not affect activity-densities, but there were some seasonal changes in age class and sex structures with more adult males captured during winter. Our results provide some of the first insights into the spatial and temporal influences seabirds have on spider communities. We also provide some of the first records of spider family occurrences for south-eastern Tasmanian islands, which will provide an important baseline for assessing future change.
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Affiliation(s)
- Penelope Pascoe
- Institute for Marine and Antarctic StudiesUniversity of TasmaniaBattery PointTasmaniaAustralia
| | - Melissa Houghton
- Department of Natural Resources and Environment TasmaniaNew TownNew South WalesAustralia
| | - Holly P. Jones
- Biological Sciences and Institute for the Study of the Environment, Sustainability, and EnergyNorthern Illinois UniversityDeKalbIllinoisUSA
| | - Christine Weldrick
- Australian Antarctic Program PartnershipUniversity of TasmaniaHobartTasmaniaAustralia
| | | | - Justine Shaw
- School of Biology and Environmental SciencesQueensland University of TechnologyBrisbaneQueenslandAustralia
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20
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Sýkora J, Barták M, Heneberg P, Korenko S. Evolutionary aspects of the parasitoid life strategy, with a particular emphasis on fly–spider interactions. Biol J Linn Soc Lond 2022. [DOI: 10.1093/biolinnean/blac113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Parasitoids are significant ecological elements of terrestrial food webs and have evolved within seven insect orders. Interestingly, however, associations with spiders as hosts have evolved only in two insect orders, Diptera and Hymenoptera. Here, we summarize various aspects of host utilization by dipteran flies with an emphasis on associations with spiders. Our synthesis reveals that spider flies (family Acroceridae) have evolved a unique life strategy among all the parasitoid taxa associated with spiders, in which koinobiont small-headed flies utilize an indirect oviposition strategy. This indirect oviposition in spider flies is inherited from Nemestrinimorpha ancestors which appeared in the Late Triassic and is characterized by the evolution of planidial larvae. Further, we discuss the advantages and disadvantages of indirect oviposition in spider flies. On the one hand, indirect oviposition allows the fly to avoid contact/wrestling with spider hosts. On the other hand, larval survival is low because the planidium must actively seek out and infect a suitable host individually. The risk of failure to find a suitable spider host is offset by the fly’s extremely high fecundity.
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Affiliation(s)
- Jakub Sýkora
- Department of Agroecology and Crop Production, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Prague , Kamýcká 129, 165 00 Prague 6 – Suchdol , Czech Republic
| | - Miroslav Barták
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Prague , Kamýcká 129, 165 00 Prague 6 – Suchdol , Czech Republic
| | - Petr Heneberg
- Third Faculty of Medicine, Charles University in Prague , Ruská 87, 100 00, Prague 10 , Czech Republic
| | - Stanislav Korenko
- Department of Agroecology and Crop Production, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Prague , Kamýcká 129, 165 00 Prague 6 – Suchdol , Czech Republic
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21
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Abstract
Knowledge on the distribution and abundance of organisms is fundamental to understanding their roles within ecosystems and their ecological importance for other taxa. Such knowledge is currently lacking for insects, which have long been regarded as the "little things that run the world". Even for ubiquitous insects, such as ants, which are of tremendous ecological significance, there is currently neither a reliable estimate of their total number on Earth nor of their abundance in particular biomes or habitats. We compile data on ground-dwelling and arboreal ants to obtain an empirical estimate of global ant abundance. Our analysis is based on 489 studies, spanning all continents, major biomes, and habitats. We conservatively estimate total abundance of ground-dwelling ants at over 3 × 1015 and estimate the number of all ants on Earth to be almost 20 × 1015 individuals. The latter corresponds to a biomass of ∼12 megatons of dry carbon. This exceeds the combined biomass of wild birds and mammals and is equivalent to ∼20% of human biomass. Abundances of ground-dwelling ants are strongly concentrated in tropical and subtropical regions but vary substantially across habitats. The density of leaf-litter ants is highest in forests, while the numbers of actively ground-foraging ants are highest in arid regions. This study highlights the central role ants play in terrestrial ecosystems but also major ecological and geographic gaps in our current knowledge. Our results provide a crucial baseline for exploring environmental drivers of ant-abundance patterns and for tracking the responses of insects to environmental change.
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22
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McIver JD, Brandt R. Epigaeic spider response to sagebrush steppe restoration treatments. Ecosphere 2022. [DOI: 10.1002/ecs2.4078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- James D. McIver
- Eastern Oregon Agricultural Research Center Oregon State University Union Oregon USA
- Orma J. Smith Museum of Natural History College of Idaho Caldwell Idaho USA
| | - Ruth Brandt
- Eastern Oregon Agricultural Research Center Oregon State University Union Oregon USA
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23
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Worldwide Web: High Venom Potency and Ability to Optimize Venom Usage Make the Globally Invasive Noble False Widow Spider Steatoda nobilis (Thorell, 1875) (Theridiidae) Highly Competitive against Native European Spiders Sharing the Same Habitats. Toxins (Basel) 2022; 14:toxins14090587. [PMID: 36136525 PMCID: PMC9500793 DOI: 10.3390/toxins14090587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 08/23/2022] [Accepted: 08/24/2022] [Indexed: 11/29/2022] Open
Abstract
Venom compositions include complex mixtures of toxic proteins that evolved to immobilize/dissuade organisms by disrupting biological functions. Venom production is metabolically expensive, and parsimonious use is expected, as suggested by the venom optimisation hypothesis. The decision-making capacity to regulate venom usage has never been demonstrated for the globally invasive Noble false widow Steatoda nobilis (Thorell, 1875) (Theridiidae). Here, we investigated variations of venom quantities available in a wild population of S. nobilis and prey choice depending on venom availability. To partially determine their competitiveness, we compared their attack rate success, median effective dose (ED50) and lethal dose (LD50), with four sympatric synanthropic species: the lace webbed spider Amaurobius similis, the giant house spider Eratigena atrica, the missing sector orb-weaver Zygiella x-notata, and the cellar spider Pholcus phalangioides. We show that S. nobilis regulates its venom usage based on availability, and its venom is up to 230-fold (0.56 mg/kg) more potent than native spiders. The high potency of S. nobilis venom and its ability to optimize its usage make this species highly competitive against native European spiders sharing the same habitats.
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24
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Ramos D, Hartke TR, Buchori D, Dupérré N, Hidayat P, Lia M, Harms D, Scheu S, Drescher J. Rainforest conversion to rubber and oil palm reduces abundance, biomass and diversity of canopy spiders. PeerJ 2022; 10:e13898. [PMID: 35990898 PMCID: PMC9390325 DOI: 10.7717/peerj.13898] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 07/22/2022] [Indexed: 01/19/2023] Open
Abstract
Rainforest canopies, home to one of the most complex and diverse terrestrial arthropod communities, are threatened by conversion of rainforest into agricultural production systems. However, little is known about how predatory arthropod communities respond to such conversion. To address this, we compared canopy spider (Araneae) communities from lowland rainforest with those from three agricultural systems in Jambi Province, Sumatra, Indonesia, i.e., jungle rubber (rubber agroforest) and monoculture plantations of rubber and oil palm. Using canopy fogging, we collected 10,676 spider specimens belonging to 36 families and 445 morphospecies. The four most abundant families (Salticidae N = 2,043, Oonopidae N = 1,878, Theridiidae N = 1,533 and Clubionidae N = 1,188) together comprised 62.2% of total individuals, while the four most speciose families, Salticidae (S = 87), Theridiidae (S = 83), Araneidae (S = 48) and Thomisidae (S = 39), contained 57.8% of all morphospecies identified. In lowland rainforest, average abundance, biomass and species richness of canopy spiders was at least twice as high as in rubber or oil palm plantations, with jungle rubber showing similar abundances as rainforest, and intermediate biomass and richness. Community composition of spiders was similar in rainforest and jungle rubber, but differed from rubber and oil palm, which also differed from each other. Canonical Correspondence Analysis showed that canopy openness, aboveground tree biomass and tree density together explained 18.2% of the variation in spider communities at family level. On a morphospecies level, vascular plant species richness and tree density significantly affected the community composition but explained only 6.8% of the variance. While abundance, biomass and diversity of spiders declined strongly with the conversion of rainforest into monoculture plantations of rubber and oil palm, we also found that a large proportion of the rainforest spider community can thrive in extensive agroforestry systems such as jungle rubber. Despite being very different from rainforest, the canopy spider communities in rubber and oil palm plantations may still play a vital role in the biological control of canopy herbivore species, thus contributing important ecosystem services. The components of tree and palm canopy structure identified as major determinants of canopy spider communities may aid in decision-making processes toward establishing cash-crop plantation management systems which foster herbivore control by spiders.
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Affiliation(s)
- Daniel Ramos
- Department of Animal Ecology, J.-F. Blumenbach Institute for Zoology and Anthropology, University of Göttingen, Untere Karspüle, Göttingen, Germany
| | - Tamara R. Hartke
- Department of Animal Ecology, J.-F. Blumenbach Institute for Zoology and Anthropology, University of Göttingen, Untere Karspüle, Göttingen, Germany
| | - Damayanti Buchori
- Center for Transdisciplinary and Sustainability Sciences, IPB University, Bogor, West Java, Indonesia,Department of Plant Protection, Faculty of Agriculture, IPB University Bogor, Bogor, West Java, Indonesia
| | - Nadine Dupérré
- Center for Taxonomy and Morphology, Zoological Museum Hamburg, Leibnitz Institute for the Analysis of Biodiversity Change (LIB), Hamburg, Germany
| | - Purnama Hidayat
- Department of Plant Protection, Faculty of Agriculture, IPB University Bogor, Bogor, West Java, Indonesia
| | - Mayanda Lia
- Department of Plant Protection, Faculty of Agriculture, IPB University Bogor, Bogor, West Java, Indonesia
| | - Danilo Harms
- Center for Taxonomy and Morphology, Zoological Museum Hamburg, Leibnitz Institute for the Analysis of Biodiversity Change (LIB), Hamburg, Germany
| | - Stefan Scheu
- Department of Animal Ecology, J.-F. Blumenbach Institute for Zoology and Anthropology, University of Göttingen, Untere Karspüle, Göttingen, Germany,Center for Biodiversity and Sustainable Land Use, Georg-August Universität Göttingen, Göttingen, Germany
| | - Jochen Drescher
- Department of Animal Ecology, J.-F. Blumenbach Institute for Zoology and Anthropology, University of Göttingen, Untere Karspüle, Göttingen, Germany
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25
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Pashkevich MD, Spear DM, Advento AD, Caliman JP, Foster WA, Luke SH, Naim M, Ps S, Snaddon JL, Turner EC. Spiders in canopy and ground microhabitats are robust to changes in understory vegetation management practices in mature oil palm plantations (Riau, Indonesia). Basic Appl Ecol 2022. [DOI: 10.1016/j.baae.2022.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Sebata S, Haddad CR, FitzPatrick MJ, Foord SH. Weak negative responses of spider diversity to short-term ‘kraaling’. RANGELAND JOURNAL 2022. [DOI: 10.1071/rj22004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The influence of short-duration, concentrated kraaling (enclosure) has been documented for plants, wildlife, and macro-invertebrates. However, limited information is available on its impact on ground-dwelling spiders. The purpose of this study was to assess the effect of short-duration kraaling, time since cattle removal, and microhabitat variables on spider assemblages in Matabeleland North Province, Zimbabwe. We used a matched-pair and space for time design (inside vs outside previously kraaled inclusions) across 11 sites, using four cattle herds (H1, H6, H7 and HNguni). Spiders were sampled in the early and late rainy season with pitfall traps left open for 14-day sampling periods and emptied twice in each period. We captured 634 spiders, comprising 63 species in 44 genera and 18 families. The most abundant family was Lycosidae (37%; 16 spp.), followed by Gnaphosidae (15%; 10 spp.) and Salticidae (14.5%; 7 spp.). Generalised linear mixed models showed that generic richness was greater in sites with more bare ground. However, this effect was reversed in previously kraaled sites, and was particularly evident for spider abundance that responded negatively relative to unkraaled sites. Furthermore, with a U-shaped recovery, generic richness increased with time since kraaling. Model-based multivariate models showed that short-duration kraaling had a significant impact on spider assemblage structure, but this impact was relatively small compared with the effect of seasonality. Most of the species that made significant contributions to this multivariate response were less abundant in kraaled sites. Spider diversity, therefore, had a weak negative response to short-term kraaling. However, these impacts should also be assessed at broader scales, including areas where cattle go to graze during the day.
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27
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Gao Y, Wu P, Cui S, Ali A, Zheng G. Divergence in gut bacterial community between females and males in the wolf spider
Pardosa astrigera. Ecol Evol 2022; 12:e8823. [PMID: 35432934 PMCID: PMC9005928 DOI: 10.1002/ece3.8823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 03/08/2022] [Accepted: 03/28/2022] [Indexed: 11/10/2022] Open
Abstract
Sex is one of the important factors affecting gut microbiota. As key predators in agroforestry ecosystem, many spider species show dramatically different activity habits and nutritional requirements between females and males. However, how sex affects gut microbiota of spiders remains unclear. Here, we compared the composition and diversity of gut bacteria between female and male Pardosa astrigera based on bacterial 16S rRNA gene sequencing. Results showed that the richness of bacterial microbiota in female spiders was significantly lower than in male spiders (p < .05). Besides, β‐diversity showed a significant difference between female and male spiders (p = .0270). The relative abundance of Actinobacteriota and Rhodococcus (belongs to Actinobacteriota) was significantly higher in female than in male spiders (p < .05), whereas the relative abundance of Firmicutes and Acinetobacter (belongs to Proteobacteria) and Ruminococcus and Fusicatenibacter (all belong to Firmicutes) was significantly higher in male than in female spiders (p < .05). The results also showed that amino acid and lipid metabolisms were significantly higher in female than in male spiders (p < .05), whereas glycan biosynthesis and metabolism were significantly higher in male than in female spiders (p < .05). Our results imply that sexual variation is a crucial factor in shaping gut bacterial community in P. astrigera spiders, while the distinct differences of bacterial composition are mainly due to their different nutritional and energy requirements.
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Affiliation(s)
- Ying Gao
- College of Life Sciences Shenyang Normal University Shenyang China
| | - Pengfeng Wu
- College of Life Sciences Shenyang Normal University Shenyang China
| | - Shuyan Cui
- College of Life Sciences Shenyang Normal University Shenyang China
| | - Abid Ali
- College of Life Sciences Shenyang Normal University Shenyang China
- Department of Entomology University of Agriculture Faisalabad Pakistan
| | - Guo Zheng
- College of Life Sciences Shenyang Normal University Shenyang China
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28
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Potapov AM. Multifunctionality of belowground food webs: resource, size and spatial energy channels. Biol Rev Camb Philos Soc 2022; 97:1691-1711. [PMID: 35393748 DOI: 10.1111/brv.12857] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 03/25/2022] [Accepted: 03/28/2022] [Indexed: 01/17/2023]
Abstract
The belowground compartment of terrestrial ecosystems drives nutrient cycling, the decomposition and stabilisation of organic matter, and supports aboveground life. Belowground consumers create complex food webs that regulate functioning, ensure stability and support biodiversity both below and above ground. However, existing soil food-web reconstructions do not match recently accumulated empirical evidence and there is no comprehensive reproducible approach that accounts for the complex resource, size and spatial structure of food webs in soil. Here I build on generic food-web organisation principles and use multifunctional classification of soil protists, invertebrates and vertebrates, to reconstruct a 'multichannel' food web across size classes of soil-associated consumers. I infer weighted trophic interactions among trophic guilds using feeding preferences and prey protection traits (evolutionarily inherited traits), size and spatial distributions (niche overlaps), and biomass-dependent feeding. I then use food-web reconstruction, together with assimilation efficiencies, to calculate energy fluxes assuming a steady-state energetic system. Based on energy fluxes, I propose a number of indicators, related to stability, biodiversity and multiple ecosystem-level functions such as herbivory, top-down control, translocation and transformation of organic matter. I illustrate this approach with an empirical example, comparing it with traditional resource-focused soil food-web reconstruction. The multichannel reconstruction can be used to assess 'trophic multifunctionality' (analogous to ecosystem multifunctionality), i.e. simultaneous support of multiple trophic functions by the food web, and compare it across communities and ecosystems spanning beyond the soil. With further empirical validation of the proposed functional indicators, this multichannel reconstruction approach could provide an effective tool for understanding animal diversity-ecosystem functioning relationships in soil. This tool hopefully will inspire more researchers to describe soil communities and belowground-aboveground interactions comprehensively. Such studies will provide informative indicators for including consumers as active agents in biogeochemical models, not only locally but also on regional and global scales.
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Affiliation(s)
- Anton M Potapov
- Johann Friedrich Blumenbach Institute of Zoology and Anthropology, Animal Ecology, University of Göttingen, Untere Karspüle 2, 37073, Göttingen, Germany.,A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninsky Prospect 33, 119071, Moscow
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29
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Joel AC, Schmitt D, Baumgart L, Menzel F. Insect cuticular hydrocarbon composition influences their interaction with spider capture threads. J Exp Biol 2022; 225:274274. [PMID: 35129200 DOI: 10.1242/jeb.242514] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 02/02/2022] [Indexed: 11/20/2022]
Abstract
Insects represent the main prey of spiders, and spiders and insects co-diversified in evolutionary history. One of the main features characterizing spiders is their web as trap to capture prey. Phylogenetically, the cribellate thread is one of the earliest thread types that was specialized to capture prey. In contrast to capture threads, it lacks adhesive glue and consists of nanofibers, which do not only adhere to insects via van der Waals forces, but also interact with the insects' cuticular hydrocarbon (CHC) layer, thus enhancing adhesion. The CHC layer consist of multiple hydrocarbon types and is highly diverse between species. In this study, we show that CHC adhesion to cribellate capture threads is affected by CHC composition of the insect. We studied the interaction in detail for four different insect species with different CHC profiles and observed a differential migration of CHCs into the thread. The migration depends on the molecular structure of the hydrocarbon types as well as their viscosity, influenced by altering the ambient temperature during interaction. As a consequence, adhesion forces to CHC layers differ depending on their chemical composition. Our results match predictions based on biophysical properties of hydrocarbons, and show that cribellate spiders can exert selection pressure on the CHC composition of their insect prey.
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Affiliation(s)
- Anna-Christin Joel
- RWTH Aachen University, Institute of Zoology, Aachen, Germany.,Johannes Gutenberg-University, Institute of Organismic and Molecular Evolution, Mainz, Germany
| | - Dorothea Schmitt
- Johannes Gutenberg-University, Institute of Organismic and Molecular Evolution, Mainz, Germany
| | - Lucas Baumgart
- RWTH Aachen University, Institute of Zoology, Aachen, Germany
| | - Florian Menzel
- Johannes Gutenberg-University, Institute of Organismic and Molecular Evolution, Mainz, Germany
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30
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Robledo-Ospina LE, Rao D. Dangerous visions: a review of visual antipredator strategies in spiders. Evol Ecol 2022. [DOI: 10.1007/s10682-022-10156-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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31
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Suzuki Y, Mukaimine W. Prey–predator interactions and body size relationships between annual cicadas and spiders in Japan. J NAT HIST 2022. [DOI: 10.1080/00222933.2021.2019340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Yuya Suzuki
- The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima-shi, Ibaraki, Japan
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba-shi, Ibaraki, Japan
| | - Wataru Mukaimine
- Doctoral Program in Biology, University of Tsukuba, Tsukuba-shi, Ibaraki, Japan
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32
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Potapov AM, Beaulieu F, Birkhofer K, Bluhm SL, Degtyarev MI, Devetter M, Goncharov AA, Gongalsky KB, Klarner B, Korobushkin DI, Liebke DF, Maraun M, Mc Donnell RJ, Pollierer MM, Schaefer I, Shrubovych J, Semenyuk II, Sendra A, Tuma J, Tůmová M, Vassilieva AB, Chen T, Geisen S, Schmidt O, Tiunov AV, Scheu S. Feeding habits and multifunctional classification of soil‐associated consumers from protists to vertebrates. Biol Rev Camb Philos Soc 2022; 97:1057-1117. [DOI: 10.1111/brv.12832] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 12/31/2021] [Accepted: 01/05/2022] [Indexed: 12/17/2022]
Affiliation(s)
- Anton M. Potapov
- J.F. Blumenbach Institute of Zoology and Anthropology University of Göttingen Untere Karspüle 2 37073 Göttingen Germany
- A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences Leninsky Prospect 33 119071 Moscow Russia
| | - Frédéric Beaulieu
- Canadian National Collection of Insects, Arachnids and Nematodes, Agriculture and Agri‐Food Canada Ottawa ON K1A 0C6 Canada
| | - Klaus Birkhofer
- Department of Ecology Brandenburg University of Technology Karl‐Wachsmann‐Allee 6 03046 Cottbus Germany
| | - Sarah L. Bluhm
- J.F. Blumenbach Institute of Zoology and Anthropology University of Göttingen Untere Karspüle 2 37073 Göttingen Germany
| | - Maxim I. Degtyarev
- A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences Leninsky Prospect 33 119071 Moscow Russia
| | - Miloslav Devetter
- Biology Centre of the Czech Academy of Sciences, Institute of Soil Biology Na Sádkách 702/7 37005 České Budějovice Czech Republic
| | - Anton A. Goncharov
- A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences Leninsky Prospect 33 119071 Moscow Russia
| | - Konstantin B. Gongalsky
- A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences Leninsky Prospect 33 119071 Moscow Russia
| | - Bernhard Klarner
- J.F. Blumenbach Institute of Zoology and Anthropology University of Göttingen Untere Karspüle 2 37073 Göttingen Germany
| | - Daniil I. Korobushkin
- A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences Leninsky Prospect 33 119071 Moscow Russia
| | - Dana F. Liebke
- J.F. Blumenbach Institute of Zoology and Anthropology University of Göttingen Untere Karspüle 2 37073 Göttingen Germany
| | - Mark Maraun
- J.F. Blumenbach Institute of Zoology and Anthropology University of Göttingen Untere Karspüle 2 37073 Göttingen Germany
| | - Rory J. Mc Donnell
- Department of Crop and Soil Science Oregon State University Corvallis OR 97331 U.S.A
| | - Melanie M. Pollierer
- J.F. Blumenbach Institute of Zoology and Anthropology University of Göttingen Untere Karspüle 2 37073 Göttingen Germany
| | - Ina Schaefer
- J.F. Blumenbach Institute of Zoology and Anthropology University of Göttingen Untere Karspüle 2 37073 Göttingen Germany
| | - Julia Shrubovych
- Biology Centre of the Czech Academy of Sciences, Institute of Soil Biology Na Sádkách 702/7 37005 České Budějovice Czech Republic
- Institute of Systematics and Evolution of Animals PAS Slawkowska 17 Pl 31‐016 Krakow Poland
- State Museum Natural History of NAS of Ukraine Teatralna 18 79008 Lviv Ukraine
| | - Irina I. Semenyuk
- A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences Leninsky Prospect 33 119071 Moscow Russia
- Joint Russian‐Vietnamese Tropical Center №3 Street 3 Thang 2, Q10 Ho Chi Minh City Vietnam
| | - Alberto Sendra
- Colecciones Entomológicas Torres‐Sala, Servei de Patrimoni Històric, Ajuntament de València València Spain
- Departament de Didàctica de les Cièncias Experimentals i Socials, Facultat de Magisteri Universitat de València València Spain
| | - Jiri Tuma
- Biology Centre of the Czech Academy of Sciences, Institute of Soil Biology Na Sádkách 702/7 37005 České Budějovice Czech Republic
- Biology Centre CAS, Institute of Entomology Branisovska 1160/31 370 05 Ceske Budejovice Czech Republic
| | - Michala Tůmová
- Biology Centre of the Czech Academy of Sciences, Institute of Soil Biology Na Sádkách 702/7 37005 České Budějovice Czech Republic
| | - Anna B. Vassilieva
- A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences Leninsky Prospect 33 119071 Moscow Russia
| | - Ting‐Wen Chen
- Biology Centre of the Czech Academy of Sciences, Institute of Soil Biology Na Sádkách 702/7 37005 České Budějovice Czech Republic
| | - Stefan Geisen
- Department of Nematology Wageningen University & Research 6700ES Wageningen The Netherlands
| | - Olaf Schmidt
- UCD School of Agriculture and Food Science University College Dublin Belfield Dublin 4 Ireland
| | - Alexei V. Tiunov
- A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences Leninsky Prospect 33 119071 Moscow Russia
| | - Stefan Scheu
- J.F. Blumenbach Institute of Zoology and Anthropology University of Göttingen Untere Karspüle 2 37073 Göttingen Germany
- Centre of Biodiversity and Sustainable Land Use Büsgenweg 1 37077 Göttingen Germany
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Rodrigues I, Ramos V, Benhadi-Marín J, Moreno A, Fereres A, Pereira JA, Baptista P. A novel molecular diagnostic method for the gut content analysis of Philaenus DNA. Sci Rep 2022; 12:492. [PMID: 35017549 PMCID: PMC8752687 DOI: 10.1038/s41598-021-04422-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 12/16/2021] [Indexed: 11/09/2022] Open
Abstract
Philaenus spumarius is a vector of Xylella fastidiosa, one of the most dangerous plants pathogenic bacteria worldwide. There is currently no control measure against this pathogen. Thus, the development of vector control strategies, like generalist predators, such as spiders, could be essential to limit the spread of this vector-borne pathogen. In this study, a polymerase chain reaction (PCR)-based approach was developed to principally detect DNA of P. spumarius in the spider's gut. Accordingly, 20 primer pairs, targeting the mitochondrial cytochrome oxidase I (COI) and cytochrome b (cytB) genes, were tested for specificity, sensitivity, and efficiency in detecting P. spumarius DNA. Overall, two primer sets, targeting COI gene (COI_Ph71F/COI_Ph941R) and the cytB gene (cytB_Ph85F/cytB_Ph635R), showed the highest specificity and sensitivity, being able to amplify 870 pb and 550 bp fragments, respectively, with P. spumarius DNA concentrations 100-fold lower than that of the DNA of non-target species. Among these two primer sets, the cytB_Ph85F/cytB_Ph635R was able to detect P. spumarius in the spider Xysticus acerbus, reaching 50% detection success 82 h after feeding. The feasibility of this primer set to detect predation of P. spumarius by spiders was confirmed in the field, where 20% of the collected spiders presented positive amplifications.
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Affiliation(s)
- Isabel Rodrigues
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal.,Departamento de Ingeniería Agrária, Universidad de Léon, Av. Portugal, n° 41, 24071, Léon, Spain
| | - Vítor Ramos
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
| | - Jacinto Benhadi-Marín
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
| | - Aránzazu Moreno
- Instituto de Ciencias Agrarias, Consejo Superior de Investigaciones Científicas (ICA-CSIC), C/Serrano 115 dpdo, 28006, Madrid, Spain
| | - Alberto Fereres
- Instituto de Ciencias Agrarias, Consejo Superior de Investigaciones Científicas (ICA-CSIC), C/Serrano 115 dpdo, 28006, Madrid, Spain
| | - José Alberto Pereira
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
| | - Paula Baptista
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal.
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OUP accepted manuscript. Syst Biol 2022; 71:1487-1503. [DOI: 10.1093/sysbio/syac023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 02/20/2022] [Accepted: 03/11/2022] [Indexed: 11/13/2022] Open
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Gallé R, Tölgyesi C, Torma A, Bátori Z, Lörinczi G, Szilassi P, Gallé-Szpisjak N, Kaur H, Makra T, Módra G, Batáry P. Matrix quality and habitat type drive the diversity pattern of forest steppe fragments. Perspect Ecol Conserv 2021. [DOI: 10.1016/j.pecon.2021.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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36
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Hambäck P, Cirtwill A, García D, Grudzinska-Sterno M, Miñarro M, Tasin M, Yang X, Samnegård U. More intraguild prey than pest species in arachnid diets may compromise biological control in apple orchards. Basic Appl Ecol 2021. [DOI: 10.1016/j.baae.2021.09.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Yang T, Song X, Xu X, Zhou C, Shi A. A comparative analysis of spider prey spectra analyzed through the next-generation sequencing of individual and mixed DNA samples. Ecol Evol 2021; 11:15444-15454. [PMID: 34765189 PMCID: PMC8571630 DOI: 10.1002/ece3.8252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 09/30/2021] [Accepted: 10/06/2021] [Indexed: 11/09/2022] Open
Abstract
As one of the most abundant predators of insects in terrestrial ecosystems, spiders have long received much attention from agricultural scientists and ecologists. Do spiders have a certain controlling effect on the main insect pests of concern in farmland ecosystems? Answering this question requires us to fully understand the prey spectrum of spiders. Next-generation sequencing (NGS) has been successfully employed to analyze spider prey spectra. However, the high sequencing costs make it difficult to analyze the prey spectrum of various spider species with large samples in a given farmland ecosystem. We performed a comparative analysis of the prey spectra of Ovia alboannulata (Araneae, Lycosidae) using NGS with individual and mixed DNA samples to demonstrate which treatment was better for determining the spider prey spectra in the field. We collected spider individuals from tea plantations, and two treatments were then carried out: (1) The DNA was extracted from the spiders individually and then sequenced separately (DESISS) and (2) the DNA was extracted from the spiders individually and then mixed and sequenced (DESIMS). The results showed that the number of prey families obtained by the DESISS treatment was approximately twice that obtained by the DESIMS treatment. Therefore, the DESIMS treatment greatly underestimated the prey composition of the spiders, although its sequencing costs were obviously lower. However, the relative abundance of prey sequences detected in the two treatments was slightly different only at the family level. Therefore, we concluded that if our purpose were to obtain the most accurate prey spectrum of the spiders, the DESISS treatment would be the best choice. However, if our purpose were to obtain only the relative abundance of prey sequences of the spiders, the DESIMS treatment would also be an option. The present study provides an important reference for choosing applicable methods to analyze the prey spectra and food web compositions of animal in ecosystems.
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Affiliation(s)
- Tingbang Yang
- Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education)China West Normal UniversityNanchongChina
- Institute of EcologyChina West Normal UniversityNanchongChina
| | - Xuhao Song
- Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education)China West Normal UniversityNanchongChina
- Institute of EcologyChina West Normal UniversityNanchongChina
| | - Xiaoqin Xu
- Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education)China West Normal UniversityNanchongChina
- Institute of EcologyChina West Normal UniversityNanchongChina
| | - Caiquan Zhou
- Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education)China West Normal UniversityNanchongChina
- Institute of EcologyChina West Normal UniversityNanchongChina
| | - Aimin Shi
- Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education)China West Normal UniversityNanchongChina
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Xavier GM, Quero A, Moura RR, Vieira C, Meira FA, Gonzaga MO. Influence of web traits, height, and daily periods of exposition on prey captured by orb-weaver spiders. Behav Processes 2021; 193:104536. [PMID: 34728314 DOI: 10.1016/j.beproc.2021.104536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 09/23/2021] [Accepted: 10/28/2021] [Indexed: 11/16/2022]
Abstract
Orb-webs show diversity in several traits, including silk types, architecture, physical properties, locale, and period of exposition. The investigation of how they determine the identity of intercepted prey is important to functional ecology and to the evaluation of trophic niche partitioning within communities. However, the influence of several of these variables on the composition of intercepted insects remains to be determined. In this study, we evaluated the effects of web architectural traits, height, and daily periods of exposition on the interception of different insects in terms of sizes, masses, and taxa. We conducted observations of prey intercepted by the orb webs of 16 sympatric spider species and artificial webs. We found that all orb webs mainly intercepted small and light insects, sharing the most abundant insect families found in the study area. However, spiders that show nocturnal activity, more radii in their webs, large and high webs captured heavier insects. Other orb-web traits, such as the density of capture threads did not influence the kind of intercepted insects. We discuss why some variables affected prey interceptions in terms of mass. Finally, we discuss the implications of these influential variables to functional ecology, niche differentiation, and how behavioral assessments can complete this investigation in future studies.
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Affiliation(s)
- Gabriel Máximo Xavier
- Pós-graduação em Ecologia e Conservação de Recursos Naturais, Instituto de Biologia, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil.
| | - Adilson Quero
- Pós-graduação em Ecologia e Conservação de Recursos Naturais, Instituto de Biologia, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | - Rafael Rios Moura
- Pós-graduação em Ecologia e Conservação de Recursos Naturais, Instituto de Biologia, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil; Núcleo de Extensão e Pesquisa em Ecologia e Evolução (NEPEE), Departamento de Ciências Agrárias e Naturais, Universidade do Estado de Minas Gerais, Ituiutaba, MG, Brazil
| | - Camila Vieira
- Pós-graduação em Ecologia e Conservação de Recursos Naturais, Instituto de Biologia, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | - Felipe André Meira
- Pós-graduação em Ecologia e Conservação de Recursos Naturais, Instituto de Biologia, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
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Pekár S, Wolff JO, Černecká Ľ, Birkhofer K, Mammola S, Lowe EC, Fukushima CS, Herberstein ME, Kučera A, Buzatto BA, Djoudi EA, Domenech M, Enciso AV, Piñanez Espejo YMG, Febles S, García LF, Gonçalves-Souza T, Isaia M, Lafage D, Líznarová E, Macías-Hernández N, Magalhães I, Malumbres-Olarte J, Michálek O, Michalik P, Michalko R, Milano F, Munévar A, Nentwig W, Nicolosi G, Painting CJ, Pétillon J, Piano E, Privet K, Ramírez MJ, Ramos C, Řezáč M, Ridel A, Růžička V, Santos I, Sentenská L, Walker L, Wierucka K, Zurita GA, Cardoso P. The World Spider Trait database: a centralized global open repository for curated data on spider traits. Database (Oxford) 2021; 2021:baab064. [PMID: 34651181 PMCID: PMC8517500 DOI: 10.1093/database/baab064] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 08/13/2021] [Accepted: 09/23/2021] [Indexed: 11/12/2022]
Abstract
Spiders are a highly diversified group of arthropods and play an important role in terrestrial ecosystems as ubiquitous predators, which makes them a suitable group to test a variety of eco-evolutionary hypotheses. For this purpose, knowledge of a diverse range of species traits is required. Until now, data on spider traits have been scattered across thousands of publications produced for over two centuries and written in diverse languages. To facilitate access to such data, we developed an online database for archiving and accessing spider traits at a global scale. The database has been designed to accommodate a great variety of traits (e.g. ecological, behavioural and morphological) measured at individual, species or higher taxonomic levels. Records are accompanied by extensive metadata (e.g. location and method). The database is curated by an expert team, regularly updated and open to any user. A future goal of the growing database is to include all published and unpublished data on spider traits provided by experts worldwide and to facilitate broad cross-taxon assays in functional ecology and comparative biology. Database URL:https://spidertraits.sci.muni.cz/.
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Affiliation(s)
- Stano Pekár
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, Brno 611 37, Czechia
| | - Jonas O Wolff
- Zoological Institute and Museum, University of Greifswald, Loitzer Str. 26, Greifswald 17489, Germany
- Department of Biological Sciences, Macquarie University, 6 Wally’s Walk, Sydney, NSW 2109, Australia
| | - Ľudmila Černecká
- Slovak Academy of Sciences, Institute of Forest Ecology, Ľ. Štúra 2, Zvolen 960 01, Slovak Republic
| | - Klaus Birkhofer
- Department of Ecology, Brandenburg University of Technology Cottbus-Senftenberg, Konrad-Wachsmann-Allee 6, Cottbus 03046, Germany
| | - Stefano Mammola
- Laboratory for Integrative Biodiversity Research, Finnish Museum of Natural History LUOMUS, University of Helsinki, Pohjoinen Rautatiekatu 13, Helsinki 00014, Finland
- Molecular Ecology Group (MEG), Water Research Institute (IRSA), National Research Council (CNR), Corso Tonolli, 50, Pallanza 28922, Italy
| | - Elizabeth C Lowe
- Department of Biological Sciences, Macquarie University, 6 Wally’s Walk, Sydney, NSW 2109, Australia
| | - Caroline S Fukushima
- Laboratory for Integrative Biodiversity Research, Finnish Museum of Natural History LUOMUS, University of Helsinki, Pohjoinen Rautatiekatu 13, Helsinki 00014, Finland
| | - Marie E Herberstein
- Department of Biological Sciences, Macquarie University, 6 Wally’s Walk, Sydney, NSW 2109, Australia
| | - Adam Kučera
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, Brno 611 37, Czechia
| | - Bruno A Buzatto
- Department of Biological Sciences, Macquarie University, 6 Wally’s Walk, Sydney, NSW 2109, Australia
- School of Biological Sciences, University of Western Australia, 35 Stirling highway, Crawley, WA 6009, Australia
| | - El Aziz Djoudi
- Department of Ecology, Brandenburg University of Technology Cottbus-Senftenberg, Konrad-Wachsmann-Allee 6, Cottbus 03046, Germany
| | - Marc Domenech
- Department of Evolutionary Biology, Ecology and Environmental Sciences & Biodiversity Research Institute (IRBio), Universitat de Barcelona, Av. Diagonal 643, Barcelona 08028, Spain
| | | | | | - Sara Febles
- Grupo de Investigaciones Entomológicas de Tenerife (GIET), C/ San Eulogio 15, 1º, La Laguna, Canary Islands 38108, Spain
| | - Luis F García
- Centro Universitario Regional del Este, Universidad de la República, Ruta 8 Km 282, Treinta y Tres, Uruguay
| | - Thiago Gonçalves-Souza
- Department of Biology, Ecological Synthesis and Biodiversity Conservation Lab, Federal Rural University of Pernambuco, Dom Manuel de Medeiros, s/n, Dois Irmãos—CEP, Recife, PE 50710-270, Brazil
| | - Marco Isaia
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina, 13, Turin 10123, Italy
| | - Denis Lafage
- UMR CNRS 6553 ECOBIO, Université de Rennes 1, 263 Avenue du General Leclerc, Rennes 35042, France
| | - Eva Líznarová
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, Brno 611 37, Czechia
| | - Nuria Macías-Hernández
- Laboratory for Integrative Biodiversity Research, Finnish Museum of Natural History LUOMUS, University of Helsinki, Pohjoinen Rautatiekatu 13, Helsinki 00014, Finland
- Departamento de Biología Animal, Edafología y Geología, Universidad de La Laguna, La Laguna, Tenerife 38206, Spain
| | - Ivan Magalhães
- Division of Arachnology, Museo Argentino de Ciencias Naturales ‘Bernardino Rivadavia’—CONICET, Av. Ángel Gallardo 470, Buenos Aires C1405DJR, Argentina
| | - Jagoba Malumbres-Olarte
- Laboratory for Integrative Biodiversity Research, Finnish Museum of Natural History LUOMUS, University of Helsinki, Pohjoinen Rautatiekatu 13, Helsinki 00014, Finland
- CE3C—Centre for Ecology, Evolution and Environmental Changes, Azorean Biodiversity Group and Universidade dos Açores, Angra do Heroísmo, Azores, Portugal
| | - Ondřej Michálek
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, Brno 611 37, Czechia
| | - Peter Michalik
- Zoological Institute and Museum, University of Greifswald, Loitzer Str. 26, Greifswald 17489, Germany
| | - Radek Michalko
- Department of Forest Ecology, Faculty of Forestry and Wood Technology, Mendel University in Brno, Zemědělská 3, Brno 613 00, Czech Republic
| | - Filippo Milano
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina, 13, Turin 10123, Italy
| | - Ana Munévar
- Instituto de Biología Subtropical (UNAM-CONICET), Puerto Iguazú, Argentina
| | - Wolfgang Nentwig
- Institute of Ecology and Evolution, University of Bern, Baltzerstrasse 6, Bern 3012, Switzerland
| | - Giuseppe Nicolosi
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina, 13, Turin 10123, Italy
| | - Christina J Painting
- Te Aka Mātuatua School of Science, University of Waikato, Private Bag 3105, Hamilton 3240, New Zealand
| | - Julien Pétillon
- UMR CNRS 6553 ECOBIO, Université de Rennes 1, 263 Avenue du General Leclerc, Rennes 35042, France
| | - Elena Piano
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina, 13, Turin 10123, Italy
| | - Kaïna Privet
- UMR CNRS 6553 ECOBIO, Université de Rennes 1, 263 Avenue du General Leclerc, Rennes 35042, France
| | - Martín J Ramírez
- Division of Arachnology, Museo Argentino de Ciencias Naturales ‘Bernardino Rivadavia’—CONICET, Av. Ángel Gallardo 470, Buenos Aires C1405DJR, Argentina
| | - Cândida Ramos
- Laboratory for Integrative Biodiversity Research, Finnish Museum of Natural History LUOMUS, University of Helsinki, Pohjoinen Rautatiekatu 13, Helsinki 00014, Finland
| | - Milan Řezáč
- Crop Research Institute, Drnovská 507, Prague 6 CZ-16106, Czechia
| | - Aurélien Ridel
- UMR CNRS 6553 ECOBIO, Université de Rennes 1, 263 Avenue du General Leclerc, Rennes 35042, France
| | - Vlastimil Růžička
- Biology Centre, Czech Academy of Sciences, Institute of Entomology, Branišovská 31, České Budějovice 370 05, Czechia
| | - Irene Santos
- Grupo de Investigaciones Entomológicas de Tenerife (GIET), C/ San Eulogio 15, 1º, La Laguna, Canary Islands 38108, Spain
- Island Ecology and Evolution Research Group, Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), La Laguna, Tenerife, Canary Islands 38206, Spain
| | - Lenka Sentenská
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, Brno 611 37, Czechia
| | - Leilani Walker
- Natural Sciences, Auckland War Memorial Museum, Parnell, Auckland 1010, New Zealand
| | - Kaja Wierucka
- Department of Biological Sciences, Macquarie University, 6 Wally’s Walk, Sydney, NSW 2109, Australia
- Department of Anthropology, University of Zürich, Winterthurerstrasse 190, Zürich 8057, Switzerland
| | | | - Pedro Cardoso
- Laboratory for Integrative Biodiversity Research, Finnish Museum of Natural History LUOMUS, University of Helsinki, Pohjoinen Rautatiekatu 13, Helsinki 00014, Finland
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Michalko R, Birkhofer K, Pekár S. Interaction between hunting strategy, habitat type and stratum drive intraguild predation and cannibalism. OIKOS 2021. [DOI: 10.1111/oik.08355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Radek Michalko
- Dept of Forest Ecology, Faculty of Forestry and Wood Technology, Mendel Univ. in Brno Brno Czech Republic
| | - Klaus Birkhofer
- Dept of Ecology, Brandenburg Univ. of Technology Cottbus Germany
| | - Stano Pekár
- Dept of Botany and Zoology, Faculty of Sciences, Masaryk Univ. Brno Czech Republic
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Wadhwani P, Sekaran S, Strandberg E, Bürck J, Chugh A, Ulrich AS. Membrane Interactions of Latarcins: Antimicrobial Peptides from Spider Venom. Int J Mol Sci 2021; 22:ijms221810156. [PMID: 34576320 PMCID: PMC8470881 DOI: 10.3390/ijms221810156] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/14/2021] [Accepted: 09/15/2021] [Indexed: 11/26/2022] Open
Abstract
A group of seven peptides from spider venom with diverse sequences constitute the latarcin family. They have been described as membrane-active antibiotics, but their lipid interactions have not yet been addressed. Using circular dichroism and solid-state 15N-NMR, we systematically characterized and compared the conformation and helix alignment of all seven peptides in their membrane-bound state. These structural results could be correlated with activity assays (antimicrobial, hemolysis, fluorescence vesicle leakage). Functional synergy was not observed amongst any of the latarcins. In the presence of lipids, all peptides fold into amphiphilic α-helices as expected, the helices being either surface-bound or tilted in the bilayer. The most tilted peptide, Ltc2a, possesses a novel kind of amphiphilic profile with a coiled-coil-like hydrophobic strip and is the most aggressive of all. It indiscriminately permeabilizes natural membranes (antimicrobial, hemolysis) as well as artificial lipid bilayers through the segregation of anionic lipids and possibly enhanced motional averaging. Ltc1, Ltc3a, Ltc4a, and Ltc5a are efficient and selective in killing bacteria but without causing significant bilayer disturbance. They act rather slowly or may even translocate towards intracellular targets, suggesting more subtle lipid interactions. Ltc6a and Ltc7, finally, do not show much antimicrobial action but can nonetheless perturb model bilayers.
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Affiliation(s)
- Parvesh Wadhwani
- Institute of Biological Interfaces (IBG-2), Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany; (P.W.); (E.S.); (J.B.)
| | - Saiguru Sekaran
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, Hauz Khas, Delhi 110016, India; (S.S.); (A.C.)
| | - Erik Strandberg
- Institute of Biological Interfaces (IBG-2), Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany; (P.W.); (E.S.); (J.B.)
| | - Jochen Bürck
- Institute of Biological Interfaces (IBG-2), Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany; (P.W.); (E.S.); (J.B.)
| | - Archana Chugh
- Kusuma School of Biological Sciences, Indian Institute of Technology Delhi, Hauz Khas, Delhi 110016, India; (S.S.); (A.C.)
| | - Anne S. Ulrich
- Institute of Biological Interfaces (IBG-2), Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany; (P.W.); (E.S.); (J.B.)
- Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
- Correspondence:
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Narimanov N, Hatamli K, Entling MH. Prey naïveté rather than enemy release dominates the relation of an invasive spider toward a native predator. Ecol Evol 2021; 11:11200-11206. [PMID: 34429911 PMCID: PMC8366888 DOI: 10.1002/ece3.7905] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 06/16/2021] [Accepted: 06/25/2021] [Indexed: 11/11/2022] Open
Abstract
Ecosystems may suffer from the impact of invasive species. Thus, understanding the mechanisms contributing to successful invasions is fundamental for limiting the effects of invasive species. Most intuitive, the enemy release hypothesis predicts that invasive species might be more successful in the exotic range than resident sympatric species owing to the absence of coevolution with native enemies. Here, we test the enemy release hypothesis for the invasion of Europe by the North American spider Mermessus trilobatus. We compare the susceptibility of invasive Mermessus trilobatus and a native species with similar life history to a shared predator with which both species commonly co-occur in Europe. Contrary to our expectations, invasive Mermessus trilobatus were consumed three times more frequently by native predators than their native counterparts. Our study shows that invasive Mermessus trilobatus is more sensitive to a dominant native predator than local sympatric species. This suggests that the relation between the invasive spider and its native predator is dominated by prey naïveté rather than enemy release. Further studies investigating evolutionary and ecological processes behind the invasion success of Mermessus trilobatus, including testing natural parasites and rapid reproduction, are needed to explain its invasion success in Europe.
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Affiliation(s)
- Nijat Narimanov
- iES LandauInstitute for Environmental SciencesDepartment of Ecosystem AnalysisUniversity of Koblenz‐LandauLandauGermany
| | - Kamal Hatamli
- iES LandauInstitute for Environmental SciencesDepartment of Ecosystem AnalysisUniversity of Koblenz‐LandauLandauGermany
| | - Martin H. Entling
- iES LandauInstitute for Environmental SciencesDepartment of Ecosystem AnalysisUniversity of Koblenz‐LandauLandauGermany
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Nève de Mévergnies T, Chailleux A, Detrain C. The African weaver ant has no negative impact on spiders in mango orchards of Senegal. Afr J Ecol 2021. [DOI: 10.1111/aje.12910] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thibault Nève de Mévergnies
- Biopass Cirad‐ISRA‐UCAD‐IRD Dakar Senegal
- Unit of Social Ecology Université Libre de Bruxelles Brussels Belgium
| | - Anaïs Chailleux
- Biopass Cirad‐ISRA‐UCAD‐IRD Dakar Senegal
- Cirad UPR HortSys Dakar Senegal
- Cirad Univ. Montpellier Montpellier France
| | - Claire Detrain
- Unit of Social Ecology Université Libre de Bruxelles Brussels Belgium
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Bowers C, Toews MD, Schmidt JM. Winter cover crops shape early‐season predator communities and trophic interactions. Ecosphere 2021. [DOI: 10.1002/ecs2.3635] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Carson Bowers
- Department of Entomology University of Georgia Tifton Georgia 31793 USA
| | - Michael D. Toews
- Department of Entomology University of Georgia Tifton Georgia 31793 USA
| | - Jason M. Schmidt
- Department of Entomology University of Georgia Tifton Georgia 31793 USA
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Ridel A, Lafage D, Devogel P, Lacoue-Labarthe T, Pétillon J. Habitat filtering differentially modulates phylogenetic and functional diversity relationships between predatory arthropods. ROYAL SOCIETY OPEN SCIENCE 2021; 8:202093. [PMID: 34109036 PMCID: PMC8170193 DOI: 10.1098/rsos.202093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 05/07/2021] [Indexed: 06/12/2023]
Abstract
Mechanisms underlying biological diversities at different scales have received significant attention over the last decades. The hypothesis of whether local abiotic factors, driving functional and phylogenetic diversities, can differ among taxa of arthropods remains under-investigated. In this study, we compared correlations and drivers of functional diversity (FD) and phylogenetic diversity (PD) between spiders and carabids, two dominant taxa of ground-dwelling arthropods in salt marshes. Both taxa exhibited high correlation between FD and PD; the correlation was even higher in carabids, probably owing to their lower species richness. Analyses using structural equation modelling highlighted that FD and PD were positively linked to taxonomic diversity (TD) in both taxa; however, abiotic factors driving the FD and PD differed between spiders and carabids. Salinity particularly drove the TD of carabids, but not that of spiders, suggesting that spiders are phenotypically more plastic and less selected by this factor. Conversely, PD was influenced by salinity in spiders, but not in carabids. This result can be attributed to the different evolutionary history and colonization process of salt marshes between the two model taxa. Finally, our study highlights that, in taxa occupying the same niche in a constrained habitat, FD and PD can have different drivers, and thereby different filtering mechanisms.
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Affiliation(s)
- Aurélien Ridel
- UMR CNRS 6553 Ecobio, Université de Rennes, 263 Avenue du Gal Leclerc, CS 74205, 35042 Rennes cedex, France
| | - Denis Lafage
- UMR CNRS 6553 Ecobio, Université de Rennes, 263 Avenue du Gal Leclerc, CS 74205, 35042 Rennes cedex, France
| | - Pierre Devogel
- UMR CNRS 6553 Ecobio, Université de Rennes, 263 Avenue du Gal Leclerc, CS 74205, 35042 Rennes cedex, France
| | - Thomas Lacoue-Labarthe
- UMR CNRS 7266 LIENSs, Université de La Rochelle, 2 Rue Olympe de Gouges, 17000 La Rochelle, France
| | - Julien Pétillon
- UMR CNRS 6553 Ecobio, Université de Rennes, 263 Avenue du Gal Leclerc, CS 74205, 35042 Rennes cedex, France
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van Schrojenstein Lantman IM, Vesterinen EJ, Hertzog LR, Martel A, Verheyen K, Lens L, Bonte D. Body size and tree species composition determine variation in prey consumption in a forest-inhabiting generalist predator. Ecol Evol 2021; 11:8295-8309. [PMID: 34188887 PMCID: PMC8216911 DOI: 10.1002/ece3.7659] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 04/19/2021] [Accepted: 04/19/2021] [Indexed: 11/14/2022] Open
Abstract
Trophic interactions may strongly depend on body size and environmental variation, but this prediction has been seldom tested in nature. Many spiders are generalist predators that use webs to intercept flying prey. The size and mesh of orb webs increases with spider size, allowing a more efficient predation on larger prey. We studied to this extent the orb-weaving spider Araneus diadematus inhabiting forest fragments differing in edge distance, tree diversity, and tree species. These environmental variables are known to correlate with insect composition, richness, and abundance. We anticipated these forest characteristics to be a principle driver of prey consumption. We additionally hypothesized them to impact spider size at maturity and expect shifts toward larger prey size distributions in larger individuals independently from the environmental context. We quantified spider diet by means of metabarcoding of nearly 1,000 A. diadematus from a total of 53 forest plots. This approach allowed a massive screening of consumption dynamics in nature, though at the cost of identifying the exact prey identity, as well as their abundance and putative intraspecific variation. Our study confirmed A. diadematus as a generalist predator, with more than 300 prey ZOTUs detected in total. At the individual level, we found large spiders to consume fewer different species, but adding larger species to their diet. Tree species composition affected both prey species richness and size in the spider's diet, although tree diversity per se had no influence on the consumed prey. Edges had an indirect effect on the spider diet as spiders closer to the forest edge were larger and therefore consumed larger prey. We conclude that both intraspecific size variation and tree species composition shape the consumed prey of this generalist predator.
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Affiliation(s)
| | - Eero J. Vesterinen
- Spatial Foodweb Ecology GroupDepartment of Agricultural SciencesUniversity of HelsinkiHelsinkiFinland
- Department of EcologySwedish University of Agricultural SciencesUppsalaSweden
- Department of BiologyUniversity of TurkuTurkuFinland
| | - Lionel R. Hertzog
- Terrestrial Ecology UnitDepartment of BiologyGhent UniversityGentBelgium
- Thünen Institut for BiodiversityBraunschweigGermany
- Department Pathology, Bacteriology and Avian DiseasesGhent UniversityMerelbekeBelgium
| | - An Martel
- Thünen Institut for BiodiversityBraunschweigGermany
- Department Pathology, Bacteriology and Avian DiseasesGhent UniversityMerelbekeBelgium
| | - Kris Verheyen
- Forest & Nature LabDepartment of EnvironmentGhent UniversityGontrodeBelgium
| | - Luc Lens
- Terrestrial Ecology UnitDepartment of BiologyGhent UniversityGentBelgium
| | - Dries Bonte
- Terrestrial Ecology UnitDepartment of BiologyGhent UniversityGentBelgium
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47
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Michalko R, Košulič O, Martinek P, Birkhofer K. Disturbance by invasive pathogenic fungus alters arthropod predator-prey food-webs in ash plantations. J Anim Ecol 2021; 90:2213-2226. [PMID: 34013522 DOI: 10.1111/1365-2656.13537] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 05/17/2021] [Indexed: 11/29/2022]
Abstract
According to the disturbance-succession theory, natural disturbances support biodiversity and are expected to increase the complexity of food-webs in forest ecosystems by opening canopies and creating a heterogeneous environment. However, a limited number of studies have investigated the impact of disturbance by invasive pathogenic species and succession on arthropod predator-prey food-webs in forest ecosystems. Hymenoscyphus fraxineus is a pathogenic fungus of ash trees that is invasive in Europe and causes massive dieback, mainly of the common ash Fraxinus excelsior across its native range. Here we investigated how this pathogenic fungus affects food-webs of web-building spiders and their prey in understorey vegetation of ash plantations. In 23 young and middle-aged ash plantations that were distributed along a gradient of infestation by H. fraxineus (29%-86% infestation), we measured the vegetation structure (canopy openness, shrub coverage, herb/grass coverage), the trait composition of local spider communities (web type, body size), the prey availability and the prey intercepted by spider webs. We then evaluated the multivariate prey composition (prey type, body size) and network properties. Hymenoscyphus fraxineus opened the ash tree canopy, which resulted in denser shrub coverage. The dense shrub vegetation changed the composition of web types in local spider communities and increasing fungus infestation resulted in reduced mean body size of spiders. Infestation by H. fraxineus reduced the availability of predaceous Coleoptera and increased the availability of herbivorous Coleoptera as potential prey. The mean body size of captured prey and the per capita capture rates of most prey groups decreased with increasing fungus infestation. Hymenoscyphus fraxineus infestation indirectly reduced the complexity in bipartite networks and the trophic functional complementarity in local web-building spider communities. The plantation age affected the vegetation structure but did not affect the studied food-webs. Forest disturbance by the invasive pathogen affected four trophic levels (plant-herbivore-coleopteran intermediate predator-top predator web-building spiders) and, contrary to the disturbance-succession theory, disturbance by the fungus simplified the web-building spider-prey food-webs. The results support the view that H. fraxineus represents a threat to the biodiversity and ecosystem functioning in the simplified ecosystems of ash plantations.
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Affiliation(s)
- Radek Michalko
- Department of Forest Ecology, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic
| | - Ondřej Košulič
- Department of Forest Protection and Wildlife Management, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic
| | - Petr Martinek
- Department of Forest Protection and Wildlife Management, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic
| | - Klaus Birkhofer
- Department of Ecology, Brandenburg University of Technology, Cottbus, Germany
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48
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van Doan C, Pfander M, Guyer AS, Zhang X, Maurer C, Robert CA. Natural enemies of herbivores maintain their biological control potential under short-term exposure to future CO 2, temperature, and precipitation patterns. Ecol Evol 2021; 11:4182-4192. [PMID: 33976802 PMCID: PMC8093683 DOI: 10.1002/ece3.7314] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Climate change will profoundly alter the physiology and ecology of plants, insect herbivores, and their natural enemies, resulting in strong effects on multitrophic interactions. Yet, manipulative studies that investigate the direct combined impacts of changes in CO2, temperature, and precipitation on the third trophic level remain rare. Here, we assessed how exposure to elevated CO2, increased temperature, and decreased precipitation directly affect the performance and predation success of species from four major groups of herbivore natural enemies: an entomopathogenic nematode, a wolf spider, a ladybug, and a parasitoid wasp. A four-day exposure to future climatic conditions (RCP 8.5), entailing a 28% decrease in precipitation, a 3.4°C raise in temperature, and a 400 ppm increase in CO2 levels, slightly reduced the survival of entomopathogenic nematodes, but had no effect on the survival of other species. Predation success was not negatively affected in any of the tested species, but it was even increased for wolf spiders and entomopathogenic nematodes. Factorial manipulation of climate variables revealed a positive effect of reduced soil moisture on nematode infectivity, but not of increased temperature or elevated CO2. These results suggest that natural enemies of herbivores may be well adapted to short-term changes in climatic conditions. These findings provide mechanistic insights that will inform future efforts to disentangle the complex interplay of biotic and abiotic factors that drive climate-dependent changes in multitrophic interaction networks.
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Affiliation(s)
- Cong van Doan
- Institute of Plant SciencesUniversity of BernBernSwitzerland
- Oeschger Centre for Climate Change Research (OCCR)University of BernBernSwitzerland
| | - Marc Pfander
- Institute of Plant SciencesUniversity of BernBernSwitzerland
| | - Anouk S. Guyer
- Institute of Plant SciencesUniversity of BernBernSwitzerland
- Present address:
AgroscopeWädenswilSwitzerland
| | - Xi Zhang
- Institute of Plant SciencesUniversity of BernBernSwitzerland
- Present address:
Key Laboratory of Plant Stress BiologyState Key Laboratory of Cotton BiologySchool of Life SciencesHenan UniversityKaifengChina
| | - Corina Maurer
- Institute of Plant SciencesUniversity of BernBernSwitzerland
- Present address:
Agroecology and EnvironmentAgroscopeZürichSwitzerland
| | - Christelle A.M. Robert
- Institute of Plant SciencesUniversity of BernBernSwitzerland
- Oeschger Centre for Climate Change Research (OCCR)University of BernBernSwitzerland
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Li F, Lv Y, Wen Z, Bian C, Zhang X, Guo S, Shi Q, Li D. The complete mitochondrial genome of the intertidal spider (Desis jiaxiangi) provides novel insights into the adaptive evolution of the mitogenome and the evolution of spiders. BMC Ecol Evol 2021; 21:72. [PMID: 33931054 PMCID: PMC8086345 DOI: 10.1186/s12862-021-01803-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 04/22/2021] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Although almost all extant spider species live in terrestrial environments, a few species live fully submerged in freshwater or seawater. The intertidal spiders (genus Desis) built silk nests within coral crevices can survive submerged in high tides. The diving bell spider, Argyroneta aquatica, resides in a similar dynamic environment but exclusively in freshwater. Given the pivotal role played by mitochondria in supplying most energy for physiological activity via oxidative phosphorylation and the environment, herein we sequenced the complete mitogenome of Desis jiaxiangi to investigate the adaptive evolution of the aquatic spider mitogenomes and the evolution of spiders. RESULTS We assembled a complete mitogenome of the intertidal spider Desis jiaxiangi and performed comparative mitochondrial analyses of data set comprising of Desis jiaxiangi and other 45 previously published spider mitogenome sequences, including that of Argyroneta aquatica. We found a unique transposition of trnL2 and trnN genes in Desis jiaxiangi. Our robust phylogenetic topology clearly deciphered the evolutionary relationships between Desis jiaxiangi and Argyroneta aquatica as well as other spiders. We dated the divergence of Desis jiaxiangi and Argyroneta aquatica to the late Cretaceous at ~ 98 Ma. Our selection analyses detected a positive selection signal in the nd4 gene of the aquatic branch comprising both Desis jiaxiangi and Argyroneta aquatica. Surprisingly, Pirata subpiraticus, Hypochilus thorelli, and Argyroneta aquatica each had a higher Ka/Ks value in the 13 PCGs dataset among 46 taxa with complete mitogenomes, and these three species also showed positive selection signal in the nd6 gene. CONCLUSIONS Our finding of the unique transposition of trnL2 and trnN genes indicates that these genes may have experienced rearrangements in the history of intertidal spider evolution. The positive selection signals in the nd4 and nd6 genes might enable a better understanding of the spider metabolic adaptations in relation to different environments. Our construction of a novel mitogenome for the intertidal spider thus sheds light on the evolutionary history of spiders and their mitogenomes.
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Affiliation(s)
- Fan Li
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049 China
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI Academy of Marine Sciences, BGI Marine, BGI, Shenzhen, 518083 China
- Centre for Behavioural Ecology and Evolution, School of Life Sciences, Hubei University, Wuhan, 430062 Hubei China
| | - Yunyun Lv
- Key Laboratory of Sichuan Province for Fishes Conservation and Utilization in the Upper Reaches of the Yangtze River, College of Life Sciences, Neijiang Normal University, Neijiang, 641100 China
| | - Zhengyong Wen
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049 China
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI Academy of Marine Sciences, BGI Marine, BGI, Shenzhen, 518083 China
| | - Chao Bian
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049 China
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI Academy of Marine Sciences, BGI Marine, BGI, Shenzhen, 518083 China
| | - Xinhui Zhang
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI Academy of Marine Sciences, BGI Marine, BGI, Shenzhen, 518083 China
| | - Shengtao Guo
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049 China
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI Academy of Marine Sciences, BGI Marine, BGI, Shenzhen, 518083 China
| | - Qiong Shi
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049 China
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI Academy of Marine Sciences, BGI Marine, BGI, Shenzhen, 518083 China
| | - Daiqin Li
- Department of Biological Sciences, National University of Singapore, Singapore, 117543 Singapore
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50
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Stork R, Smith P, Aaen C, Cooper S. Field Observations of Body Temperature for the Wolf Spider, Rabidosa rabida (Araneae: Lycosidae), Differ From Reported Laboratory Temperature Preference Suggesting Thermoconforming Behavior. ENVIRONMENTAL ENTOMOLOGY 2021; 50:405-409. [PMID: 33439991 DOI: 10.1093/ee/nvaa170] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Indexed: 06/12/2023]
Abstract
Temperature affects all aspects of ectotherm ecology, behavior, and physiology. Descriptions of thermal ecology are important for understanding ecology in changing thermal environments. Both laboratory and field estimates are important for understanding thermal ecology. Rabidosa rabida (Walckenaer 1837) (Araneae: Lycosidae) is a large wolf spider with some natural history, including laboratory estimates of thermal preference, tolerance, and performance, reported in the scientific literature. Laboratory tests suggest the active choice of temperature environment. To test published estimates of thermal ecology from the laboratory, we took body temperature measurements of mature spiders in the field nocturnally and diurnally using a FLIR camera in July 2019. We made comparisons between sexes and activity periods using field observations. We compared these measurements with the published values for thermal preferences and thermal maximum and with mean weather station data. Observed field temperatures differed significantly from published preference, but not from mean temperature from a local weather station. This suggests that this species is thermoconforming rather than actively thermoregulating. Reported thermal preference fell between the diurnal and nocturnal mean measurements closer to the diurnal than nocturnal temperatures. These field observations show how important it is to make field observations for physiology and thermal ecology. Maximum observed diurnal temperatures closely approached the published critical thermal maximum. We observed spiders performing behaviors such as hunting and feeding in conditions well above published thermal preference and near-critical high temperature. These observations suggest that R. rabida is thermoconforming in this limited period but does not rule out that they might thermoregulate in certain situations.
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Affiliation(s)
- Ryan Stork
- Department of Biology, Harding University, Box Searcy, AR
| | - Payton Smith
- Department of Biology, Harding University, Box Searcy, AR
| | - Corbin Aaen
- Department of Biology, Harding University, Box Searcy, AR
| | - Steve Cooper
- Department of Biology, Harding University, Box Searcy, AR
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