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Brown JJ, Pascual M, Wimberly MC, Johnson LR, Murdock CC. Humidity - The overlooked variable in the thermal biology of mosquito-borne disease. Ecol Lett 2023; 26:1029-1049. [PMID: 37349261 DOI: 10.1111/ele.14228] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 04/05/2023] [Indexed: 06/24/2023]
Abstract
Vector-borne diseases cause significant financial and human loss, with billions of dollars spent on control. Arthropod vectors experience a complex suite of environmental factors that affect fitness, population growth and species interactions across multiple spatial and temporal scales. Temperature and water availability are two of the most important abiotic variables influencing their distributions and abundances. While extensive research on temperature exists, the influence of humidity on vector and pathogen parameters affecting disease dynamics are less understood. Humidity is often underemphasized, and when considered, is often treated as independent of temperature even though desiccation likely contributes to declines in trait performance at warmer temperatures. This Perspectives explores how humidity shapes the thermal performance of mosquito-borne pathogen transmission. We summarize what is known about its effects and propose a conceptual model for how temperature and humidity interact to shape the range of temperatures across which mosquitoes persist and achieve high transmission potential. We discuss how failing to account for these interactions hinders efforts to forecast transmission dynamics and respond to epidemics of mosquito-borne infections. We outline future research areas that will ground the effects of humidity on the thermal biology of pathogen transmission in a theoretical and empirical framework to improve spatial and temporal prediction of vector-borne pathogen transmission.
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Affiliation(s)
- Joel J Brown
- Department of Entomology, Cornell University, Ithaca, New York, USA
| | - Mercedes Pascual
- Department of Ecology and Evolution, University of Chicago, Chicago, Illinois, USA
| | - Michael C Wimberly
- Department of Geography and Environmental Sustainability, University of Oklahoma, Norman, Oklahoma, USA
| | - Leah R Johnson
- Department of Statistics, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
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2
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Luo Z, Mowery MA, Cheng X, Yang Q, Hu J, Andrade MCB. Realized niche shift of an invasive widow spider: drivers and impacts of human activities. Front Zool 2022; 19:25. [PMID: 36307847 PMCID: PMC9617396 DOI: 10.1186/s12983-022-00470-z] [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: 01/03/2022] [Accepted: 09/23/2022] [Indexed: 11/26/2022] Open
Abstract
Background Predicting invasiveness requires an understanding of the propensity of a given species to thrive in areas with novel ecological challenges. Evaluation of realized niche shift of an invasive species in its invasive range, detecting the main drivers of the realized niche shift, and predicting the potential distribution of the species can provide important information for the management of populations of invasive species and the conservation of biodiversity. The Australian redback spider, Latrodectus hasselti, is a widow spider that is native to Australia and established in Japan, New Zealand, and Southeast Asia. We used ecological niche models and ordinal comparisons in an integrative method to compare the realized niches of native and invasive populations of this spider species. We also assessed the impact of several climatic predictor variables and human activity on this niche shift. We hypothesized that human impact is important for successful establishment of this anthropophilic species, and that climatic predictor variables may determine suitable habitat and thus predict invasive ranges. Results Our models showed that L. hasselti distributions are positively influenced by human impact in both of the native and invasive ranges. Maximum temperature was the most important climatic variable in predictions of the distribution of native populations, while precipitation seasonality was the most important in predictions of invasive populations. The realized niche of L. hasselti in its invasive range differed from that in its native range, indicating possible realized niche shift. Conclusions We infer that a preference for human-disturbed environments may underlie invasion and establishment in this spider species, as anthropogenic habitat modifications could provide shelters from unsuitable climatic conditions and extreme climatic stresses to the spiders. Because Australia and the countries in which the species is invasive have differing climates, differences in the availability of certain climatic conditions could have played a role in the realized niche shift of L. hasselti. Supplementary Information The online version contains supplementary material available at 10.1186/s12983-022-00470-z.
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3
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Segura-Hernández L, Barrantes G, Chacón-Madrigal E, García-Rodríguez A. Species distribution models and climatic niche comparisons provide clues on the geographic origin of a spider invasion in the Americas. Biol Invasions 2022. [DOI: 10.1007/s10530-022-02904-5] [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]
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4
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Liu C, Wolter C, Courchamp F, Roura-Pascual N, Jeschke JM. Biological invasions reveal how niche change affects the transferability of species distribution models. Ecology 2022; 103:e3719. [PMID: 35388469 DOI: 10.1002/ecy.3719] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 02/03/2022] [Accepted: 02/09/2022] [Indexed: 11/06/2022]
Abstract
Species distribution models (SDMs) have been widely applied to predict geographic ranges of species across space and time under the assumption of niche conservatism (i.e., species niches change very slowly). However, an increasing number of studies have reported evidence of rapid niche changes across space and time, which has sparked a widespread debate on whether SDMs can be transferred to new areas or time periods. Understanding how niche changes affect SDM transferability is thus crucial for the future application and improvement of SDMs. Biological invasions provide an opportunity to address this question due to the geographically independent distributions and diverse patterns of niche changes between species' native and introduced ranges. Here, we synthesized findings about 217 species from 50 studies to elucidate the effects of niche change on the spatial transferability of SDMs. When niche change was considered as a categorical classification (conserved vs. shifted niches) in tests of the niche conservatism hypothesis, SDM transferability was markedly lower for species with a shifted niche in their introduced range. When niche change was measured as numerical dynamics between native and introduced niches, SDM transferability was high for species occupying similar environmental conditions in both ranges and low for species with more environmental space remaining unoccupied in the introduced range. Surprisingly, the number of presence points used for developing SDMs turned out to have an even stronger effect on transferability. Our results thus reveal detrimental effects of both niche change and lack of presence points on SDM transferability. It is necessary to consider both niche change and data quality for improving the transferability of SDMs, so that they can better support conservation management and policy decisions.
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Affiliation(s)
- Chunlong Liu
- Institute of Biology, Freie Universität Berlin, Berlin, Germany.,Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, Germany.,Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), Berlin, Germany.,Université Paris-Saclay, CNRS, AgroParisTech, Ecologie Systématique Evolution, Orsay, France
| | - Christian Wolter
- Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, Germany
| | - Franck Courchamp
- Université Paris-Saclay, CNRS, AgroParisTech, Ecologie Systématique Evolution, Orsay, France
| | - Núria Roura-Pascual
- Departament de Ciències Ambientals, Facultat de Ciències, Universitat de Girona, Girona, Catalonia, Spain
| | - Jonathan M Jeschke
- Institute of Biology, Freie Universität Berlin, Berlin, Germany.,Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, Germany.,Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), Berlin, Germany
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5
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Abstract
Deprivation of protection for aquatic hyphomycetes is disturbing because they are key players in freshwater ecosystems across the globe. To attain a more holistic conservation paradigm for biodiversity in freshwaters, it is necessary to broaden our ecological perception of microfungi, mainly in aquatic hyphomycetes. A considerable groundwork still needs to be accomplished in progressing towards conserving aquatic hyphomycetes. Overcoming the paucity of information regarding the rare and endangered species, biogeography and above all, a global biodiversity database, would be a significant contribution in the initiation of an overarching conservation strategy for aquatic hyphomycetes. Being aware that the biodiversity decline in freshwaters is alarming, here we seek to explore why biodiversity data of aquatic hyphomycetes are missing. This article closely examines the threats to the biodiversity of aquatic hyphomycetes and freshwater ecosystems. Moving forward, we advocate a structured approach to gaining a thorough understanding to embrace aquatic hyphomycetes biodiversity into the conservation strategies. Including aquatic hyphomycetes in the conservation objectives may attract more funding opportunities for global surveys to initiate a fungal inclusive conservation era. Fungal conservation ventures can profit from interdisciplinary collaborations and cutting-edge science and technology, leading to informed decision making for biodiversity assessment and management.
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6
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Cordonnier M, Kaufmann B, Simon L, Escarguel G, Mondy N. Discrimination of conspecifics from heterospecifics in a hybrid zone: Behavioral and chemical cues in ants. INSECT SCIENCE 2022; 29:276-288. [PMID: 33913250 DOI: 10.1111/1744-7917.12915] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 02/17/2021] [Accepted: 02/22/2021] [Indexed: 06/12/2023]
Abstract
Species and nestmate recognition in social insects occurs mostly through cuticular hydrocarbons acting as chemical cues. These compounds generate a colony-specific odor profile depending on genetic and environmental factors. Species and nestmate recognition results in specific behavioral responses, regulating the level of aggression toward other individuals during an interaction. Although species discrimination and recognition cues have been poorly studied in the context of interspecific hybridization, such systems offer an opportunity to further investigate the influence of heritable and environmental factors on recognition. We explored the strength of discrimination in a hybrid zone between two ant species-Tetramorium immigrans and T. caespitum-by comparing cuticular hydrocarbon profiles and measuring intra- and interspecific worker aggression in both areas of sympatry and areas of allopatry among species. Species cuticular hydrocarbon profiles were well-differentiated and interspecific aggression was high, revealing highly discriminating species recognition cues. Hybrids' cuticular hydrocarbon profiles consisted of a mixture of the parental bouquets, but also exhibited hybrid-specific patterns. Behavioral assays showed that T. immigrans is as aggressive toward hybrids as toward heterospecifics. Finally, aggression between heterospecific workers was lower when interacting individuals came from areas of sympatry among species than from areas of allopatry. Taken as a whole, these findings paint a particularly complex picture of the recognition system in T. immigrans, T. caespitum, and their hybrids, and highlight that hybrid zones afford a still underexplored opportunity for investigating recognition mechanisms and discrimination between species.
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Affiliation(s)
- Marion Cordonnier
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F-69622, Villeurbanne, France
| | - Bernard Kaufmann
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F-69622, Villeurbanne, France
| | - Laurent Simon
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F-69622, Villeurbanne, France
| | - Gilles Escarguel
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F-69622, Villeurbanne, France
| | - Nathalie Mondy
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F-69622, Villeurbanne, France
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7
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Mammola S, Pétillon J, Hacala A, Monsimet J, Marti S, Cardoso P, Lafage D. Challenges and opportunities of species distribution modelling of terrestrial arthropod predators. DIVERS DISTRIB 2021. [DOI: 10.1111/ddi.13434] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- Stefano Mammola
- Laboratory for Integrative Biodiversity Research (LIBRe) Finnish Museum of Natural History (LUOMUS) University of Helsinki Helsinki Finland
- Molecular Ecology Group (MEG), Water Research Institute (RSA) National Research Council (CNR) Verbania Pallanza Italy
| | | | - Axel Hacala
- UMR ECOBIO Université de Rennes 1 Rennes France
| | - Jérémy Monsimet
- Inland Norway University of Applied Sciences, Campus Evenstad Koppang Norway
| | | | - Pedro Cardoso
- Laboratory for Integrative Biodiversity Research (LIBRe) Finnish Museum of Natural History (LUOMUS) University of Helsinki Helsinki Finland
| | - Denis Lafage
- UMR ECOBIO Université de Rennes 1 Rennes France
- Department of Environmental and Life Sciences/Biology Karlstad University Karlstad Sweden
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8
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Flucher SM, Krapf P, Arthofer W, Suarez AV, Crozier RH, Steiner FM, Schlick-Steiner BC. Effect of social structure and introduction history on genetic diversity and differentiation. Mol Ecol 2021; 30:2511-2527. [PMID: 33811410 DOI: 10.1111/mec.15911] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 03/03/2021] [Accepted: 03/19/2021] [Indexed: 12/31/2022]
Abstract
Invasive species are a global threat to biodiversity, and understanding their history and biology is a major goal of invasion biology. Population-genetic approaches allow insights into these features, as population structure is shaped by factors such as invasion history (number, origin and age of introductions) and life-history traits (e.g., mating system, dispersal capability). We compared the relative importance of these factors by investigating two closely related ants, Tetramorium immigrans and Tetramorium tsushimae, that differ in their social structure and invasion history in North America. We used mitochondrial DNA sequences and microsatellite alleles to estimate the source and number of introduction events of the two species, and compared genetic structure among native and introduced populations. Genetic diversity of both species was strongly reduced in introduced populations, which also differed genetically from native populations. Genetic differentiation between ranges and the reduction in microsatellite diversity were more severe in the more recently introduced and supercolonial T. tsushimae. However, the loss of mitochondrial haplotype diversity was more pronounced in T. immigrans, which has single-queen colonies and was introduced earlier. Tetramorium immigrans was introduced at least twice from Western Europe to North America and once independently to South America. Its monogyny might have limited genetic diversity per introduction, but new mutations and successive introductions over a long time may have added to the gene pool in the introduced range. Polygyny in T. tsushimae probably facilitated the simultaneous introduction of several queens from a Japanese population to St. Louis, USA. In addition to identifying introduction pathways, our results reveal how social structure can influence the population-genetic consequences of founder events.
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Affiliation(s)
- Sylvia M Flucher
- Molecular Ecology Group, Department of Ecology, University of Innsbruck, Innsbruck, Austria
| | - Patrick Krapf
- Molecular Ecology Group, Department of Ecology, University of Innsbruck, Innsbruck, Austria
| | - Wolfgang Arthofer
- Molecular Ecology Group, Department of Ecology, University of Innsbruck, Innsbruck, Austria
| | - Andrew V Suarez
- Department of Evolution, Ecology and Behavior, University of Illinois at Urbana-Champaign, Urbana, IL, USA.,Department of Entomology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Ross H Crozier
- School of Marine and Tropical Biology, James Cook University, Townsville, QLD, Australia
| | - Florian M Steiner
- Molecular Ecology Group, Department of Ecology, University of Innsbruck, Innsbruck, Austria
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9
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Cicconardi F, Krapf P, D'Annessa I, Gamisch A, Wagner HC, Nguyen AD, Economo EP, Mikheyev AS, Guénard B, Grabherr R, Andesner P, Wolfgang A, Di Marino D, Steiner FM, Schlick-Steiner BC. Genomic Signature of Shifts in Selection in a Subalpine Ant and Its Physiological Adaptations. Mol Biol Evol 2021; 37:2211-2227. [PMID: 32181804 PMCID: PMC7403626 DOI: 10.1093/molbev/msaa076] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Understanding how organisms adapt to extreme environments is fundamental and can provide insightful case studies for both evolutionary biology and climate-change biology. Here, we take advantage of the vast diversity of lifestyles in ants to identify genomic signatures of adaptation to extreme habitats such as high altitude. We hypothesized two parallel patterns would occur in a genome adapting to an extreme habitat: 1) strong positive selection on genes related to adaptation and 2) a relaxation of previous purifying selection. We tested this hypothesis by sequencing the high-elevation specialist Tetramorium alpestre and four other phylogenetically related species. In support of our hypothesis, we recorded a strong shift of selective forces in T. alpestre, in particular a stronger magnitude of diversifying and relaxed selection when compared with all other ants. We further disentangled candidate molecular adaptations in both gene expression and protein-coding sequence that were identified by our genome-wide analyses. In particular, we demonstrate that T. alpestre has 1) a higher level of expression for stv and other heat-shock proteins in chill-shock tests and 2) enzymatic enhancement of Hex-T1, a rate-limiting regulatory enzyme that controls the entry of glucose into the glycolytic pathway. Together, our analyses highlight the adaptive molecular changes that support colonization of high-altitude environments.
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Affiliation(s)
| | - Patrick Krapf
- Department of Ecology, University of Innsbruck, Innsbruck, Austria
| | - Ilda D'Annessa
- Istituto di Scienze e Tecnologie Chimiche "Giulio Natta", CNR (SCITEC-CNR), Milan, Italy
| | - Alexander Gamisch
- Department of Ecology, University of Innsbruck, Innsbruck, Austria.,Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Herbert C Wagner
- Department of Ecology, University of Innsbruck, Innsbruck, Austria
| | - Andrew D Nguyen
- Department of Entomology and Nematology, University of Florida, Gainesville, FL
| | - Evan P Economo
- Biodiversity & Biocomplexity Unit, Okinawa Institute of Science & Technology, Onna, Japan
| | - Alexander S Mikheyev
- Ecology and Evolution Unit, Okinawa Institute of Science & Technology, Onna, Japan
| | - Benoit Guénard
- School of Biological Sciences, The University of Hong Kong, Hong Kong, China
| | - Reingard Grabherr
- Institute of Biotechnology, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Philipp Andesner
- Department of Ecology, University of Innsbruck, Innsbruck, Austria
| | | | - Daniele Di Marino
- Department of Life and Environmental Sciences - New York-Marche Structural Biology Center (NY-MaSBiC), Polytechnic University of Marche, Ancona, Italy
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10
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Alaniz AJ, Soares AO, Vergara PM, de Azevedo EB, Grez AA. The failed invasion of Harmonia axyridis in the Azores, Portugal: Climatic restriction or wrong population origin? INSECT SCIENCE 2021; 28:238-250. [PMID: 31989775 DOI: 10.1111/1744-7917.12756] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 12/25/2019] [Accepted: 01/16/2020] [Indexed: 06/10/2023]
Abstract
We tested two questions: (i) whether the climatic conditions of the Azorean Islands in Portugal may have restricted the invasion of Harmonia axyridis across this archipelago and (ii) determine what population of this species could have a higher probability of invading the islands. We used MaxEnt to project the climate requirements of different H. axyridis populations from three regions of the world, and the potential global niche of the species in the Azorean islands. Then we assessed the suitability of the islands for each of the three H. axyridis populations and global potential niche through histograms analysis, Principal Component Analysis (PCA) of climate variables, and a variable-by-variable assessment of the suitability response curves compared with the climatic conditions of the Azores. Climatic conditions of the Azores are less suitable for the U.S. and native Asian populations of H. axyridis, and more suitable for European populations and the global potential niche. The PCA showed that the climatic conditions of the islands differed from the climatic requirements of H. axyridis. This difference is mainly explained by precipitation of the wettest month, isothermality, and the minimum temperature of the coldest month. We concluded that the climatic conditions of the Azores could have influenced the establishment and spread of H. axyridis on these islands from Europe. Our results showed that abiotic resistance represented by the climate of the potentially colonizable zones could hinder the establishment of invasive insects, but it could vary depending of the origin of the colonizing population.
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Affiliation(s)
- Alberto J Alaniz
- Laboratorio de Ecología de Ambientes Fragmentados, Departamento de Ciencias Biológicas Animales, Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Chile
- Centro de Estudios en Ecología Espacial y Medio Ambiente, Ecogeografía, Santiago, Chile
- Departamento de Gestión Agraria, Facultad Tecnológica, Universidad de Santiago de Chile, Chile
| | - António O Soares
- Center for Ecology, Evolution and Environmental Changes and Azorean Biodiversity Group, Faculty of Sciences and Technology, University of the Azores, Ponta Delgada, Portugal
| | - Pablo M Vergara
- Departamento de Gestión Agraria, Facultad Tecnológica, Universidad de Santiago de Chile, Chile
| | - Eduardo Brito de Azevedo
- Center of Climate, Departamento de Ciências Agrárias, Meteorology and Global Change of the University of the Azores (CCMMG- CITA-A), Universidade dos Açores, Angra do Heroísmo, Portugal
| | - Audrey A Grez
- Laboratorio de Ecología de Ambientes Fragmentados, Departamento de Ciencias Biológicas Animales, Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Chile
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11
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Polidori C, Sánchez-Fernández D. Environmental niche and global potential distribution of the giant resin bee Megachile sculpturalis, a rapidly spreading invasive pollinator. Glob Ecol Conserv 2020. [DOI: 10.1016/j.gecco.2020.e01365] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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12
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Blackburn LM, Elkinton JS, Havill NP, Broadley HJ, Andersen JC, Liebhold AM. Predicting the invasion range for a highly polyphagous and widespread forest herbivore. NEOBIOTA 2020. [DOI: 10.3897/neobiota.59.53550] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Here we compare the environmental niche of a highly polyphagous forest Lepidoptera species, the winter moth (Operophtera brumata), in its native and invaded range. During the last 90 years, this European tree folivore has invaded North America in at least three regions and exhibited eruptive population behavior in both its native and invaded range. Despite its importance as both a forest and agricultural pest, neither the potential extent of this species’ invaded range nor the geographic source of invading populations from its native range are known. Here we fit a climatic niche model, based on the MaxEnt algorithm, to historical records of winter moth occurrence in its native range and compare predictions of suitable distributions to records from the invaded range. We modeled this distribution using three spatial bins to overcome sampling bias for data obtained from public databases and averaged the multi-continental suitable habitat prediction. Results indicate that this species is distributed across a wide range of climates in its native range but occupies a narrower range in its invaded habitat. Furthermore, the lack of a close fit between climatic conditions in parts of its invaded range and its known native range suggests the possibility that this species has adapted to new climatic conditions during the invasion process. These models can be used to predict suitable habitats for winter moth invasions worldwide and to gain insight into possible origins of North American populations.
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13
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Effects of urbanization–climate interactions on range expansion in the invasive European pavement ant. Basic Appl Ecol 2020. [DOI: 10.1016/j.baae.2020.02.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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14
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Sheard JK, Sanders NJ, Gundlach C, Schär S, Larsen RS. Monitoring the influx of new species through citizen science: the first introduced ant in Denmark. PeerJ 2020; 8:e8850. [PMID: 32296601 PMCID: PMC7150537 DOI: 10.7717/peerj.8850] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 03/03/2020] [Indexed: 11/20/2022] Open
Abstract
Climate change and invasive species threaten biodiversity, yet rigorous monitoring of their impact can be costly. Citizen science is increasingly used as a tool for monitoring exotic species, because citizens are geographically and temporally dispersed, whereas scientists tend to cluster in museums and at universities. Here we report on the establishment of the first exotic ant taxon (Tetramorium immigrans) in Denmark, which was discovered by children participating in The Ant Hunt. The Ant Hunt is a citizen science project for children that we ran in 2017 and 2018, with a pilot study in 2015. T. immigrans was discovered in the Botanical Garden of the Natural History Museum of Denmark in 2015 and confirmed as established in 2018. This finding extends the northern range boundary of T. immigrans by almost 460 km. Using climatic niche modelling, we compared the climatic niche of T. immigrans in Europe with that of T. caespitum based on confirmed observations from 2006 to 2019. T. immigrans and T. caespitum had a 13% niche overlap, with T. immigrans showing stronger occurrence in warmer and drier areas compared to T. caespitum. Mapping the environmental niches onto geographic space identified several, currently uninhabited, areas as climatically suitable for the establishment of T. immigrans. Tetramorium immigrans was sampled almost three times as often in areas with artificial surfaces compared to T. caespitum, suggesting that T. immigrans may not be native to all of Europe and is being accidentally introduced by humans. Overall, citizen scientists collected data on ants closer to cities and harbours than scientists did and had a stronger bias towards areas of human disturbance. This increased sampling effort in areas of likely introduction of exotic species naturally increases the likelihood of discovering species sooner, making citizen science an excellent tool for exotic species monitoring, as long as trained scientists are involved in the identification process.
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Affiliation(s)
- Julie K Sheard
- Center for Macroecology, Evolution and Climate, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Nathan J Sanders
- Environmental Program, Rubenstein School of Environment and Natural Resources, University of Vermont, Burlington, VT, USA
| | - Carsten Gundlach
- Department of Physics, Technical University of Denmark, Copenhagen, Denmark
| | | | - Rasmus Stenbak Larsen
- Section for Ecology and Evolution, Department of Biology, University of Copenhagen, Copenhagen, Denmark
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15
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Dong X, Ju T, Grenouillet G, Laffaille P, Lek S, Liu J. Spatial pattern and determinants of global invasion risk of an invasive species, sharpbelly Hemiculter leucisculus (Basilesky, 1855). THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 711:134661. [PMID: 31812402 DOI: 10.1016/j.scitotenv.2019.134661] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 09/20/2019] [Accepted: 09/24/2019] [Indexed: 06/10/2023]
Abstract
Invasive species have imposed huge negative impacts on worldwide aquatic ecosystems and are generally difficult or impossible to be eradicated once established. Consequently, it becomes particularly important to ascertain their invasion risk and its determinants since such information can help us formulate more effective preventive or management actions and direct these measures to those areas where they are truly needed so as to ease regulatory burdens. Here, we examined the global invasion risk and its determinants of sharpbelly (Hemiculter leucisculus), one freshwater fish which has a high invasive potential, by using species distribution models (SDMs) and a layer overlay method. Specifically, first an ensemble species distribution model and its basal models (developed from seven machine learning algorithms) were explored to forecast the global habitat-suitability and variables importance for this species, and then a global invasion risk map was created by combining habitat-suitability with a proxy for introduction likelihood (entailing propagule pressure and dispersal constraints) of exotic sharpbelly. The results revealed that (1) the ensemble model had the highest predictive power in forecasting sharpbelly's global habitat-suitability; (2) areas with high invasion risk by sharpbelly patchily spread over the world except Antarctica; and (3) the Human Influence Index (HII), rather than any of the bioclimatic variables, was the most important factor influencing sharpbelly' future invasion. Based on these results, the present study also attempted to propose a series of prevention and management strategies to eliminate or alleviate the adverse effects caused by this species' further expansion.
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Affiliation(s)
- Xianghong Dong
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China; University of Chinese Academy of Sciences, Beijing 100190, PR China; Laboratoire Evolution & Diversité Biologique (EDB), UMR5174, CNRS, IRD, UPS, 118 route de Narbonne, 31062 Toulouse Cedex 9, France; Ecolab, Université de Toulouse, CNRS, INPT, UPS, Toulouse 31062, France
| | - Tao Ju
- Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, PR China
| | - Gaël Grenouillet
- Laboratoire Evolution & Diversité Biologique (EDB), UMR5174, CNRS, IRD, UPS, 118 route de Narbonne, 31062 Toulouse Cedex 9, France; Institut Universitaire de France, Paris, France
| | - Pascal Laffaille
- Ecolab, Université de Toulouse, CNRS, INPT, UPS, Toulouse 31062, France
| | - Sovan Lek
- Laboratoire Evolution & Diversité Biologique (EDB), UMR5174, CNRS, IRD, UPS, 118 route de Narbonne, 31062 Toulouse Cedex 9, France
| | - Jiashou Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China.
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Shivambu TC, Shivambu N, Downs CT. Impact assessment of seven alien invasive bird species already introduced to South Africa. Biol Invasions 2020. [DOI: 10.1007/s10530-020-02221-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Zhang YM, Vitone TR, Storer CG, Payton AC, Dunn RR, Hulcr J, McDaniel SF, Lucky A. From Pavement to Population Genomics: Characterizing a Long-Established Non-native Ant in North America Through Citizen Science and ddRADseq. Front Ecol Evol 2019. [DOI: 10.3389/fevo.2019.00453] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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18
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Perez A, Diamond SE. Idiosyncrasies in cities: evaluating patterns and drivers of ant biodiversity along urbanization gradients. JOURNAL OF URBAN ECOLOGY 2019. [DOI: 10.1093/jue/juz017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Urbanization is expected to reduce biodiversity. However, an increasing number of studies report urban biodiversity comparable to that of surrounding nonurban areas, leaving open the question: what maintains biodiversity in cities? We characterized patterns of ant biodiversity across urbanization gradients of three major cities in the Midwestern United States and evaluated the support for two mechanisms underlying the maintenance of biodiversity in cities, specifically via introduced non-native species and differential phenology of communities along each urbanization gradient. We observed idiosyncrasies in ant species diversity such that each city displayed either increased, decreased or no change in biodiversity across the urbanization gradient. We found partial support (one of the three cities) for the hypothesis that non-native species can contribute positively to overall species diversity in cities, though even with introduced species removed from consideration, native ant biodiversity was maintained along the urbanization gradient. We found no support for systematic differential phenology across urbanization gradients, although species diversity did vary over time across all sites. Our results further challenge the assumption of biodiversity loss in cities, as two of our three cities exhibited maintained species diversity along the urbanization gradient. Most importantly, our study demonstrates that urban biodiversity can be maintained entirely by native communities.
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Affiliation(s)
- Abe Perez
- Department of Biology, Case Western Reserve University, 2080 Adelbert Road, Cleveland, OH, USA
| | - Sarah E Diamond
- Department of Biology, Case Western Reserve University, 2080 Adelbert Road, Cleveland, OH, USA
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Cordonnier M, Gayet T, Escarguel G, Kaufmann B. From hybridization to introgression between two closely related sympatric ant species. J ZOOL SYST EVOL RES 2019. [DOI: 10.1111/jzs.12297] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Marion Cordonnier
- UMR5023 Ecologie des Hydrosystèmes Naturels et Anthropisés, CNRS, Université Lyon 1, ENTPE Université Lyon Lyon France
| | - Thibault Gayet
- UMR 5558, Laboratoire de Biométrie et Biologie Evolutive, CNRS, Université Lyon 1 Université de Lyon Lyon France
- Unité Cervidés Sangliers Office National de la Chasse et de la Faune Sauvage Birieux France
| | - Gilles Escarguel
- UMR5023 Ecologie des Hydrosystèmes Naturels et Anthropisés, CNRS, Université Lyon 1, ENTPE Université Lyon Lyon France
| | - Bernard Kaufmann
- UMR5023 Ecologie des Hydrosystèmes Naturels et Anthropisés, CNRS, Université Lyon 1, ENTPE Université Lyon Lyon France
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21
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Global invasion in progress: modeling the past, current and potential global distribution of the common myna. Biol Invasions 2019. [DOI: 10.1007/s10530-018-1900-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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22
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Falcón W, Tremblay RL. From the cage to the wild: introductions of Psittaciformes to Puerto Rico. PeerJ 2018; 6:e5669. [PMID: 30397538 PMCID: PMC6214232 DOI: 10.7717/peerj.5669] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 08/28/2018] [Indexed: 12/04/2022] Open
Abstract
Introduced psittacine birds can become highly invasive. In this study, we assessed invasions of Psittaciformes in Puerto Rico. We reviewed the literature, public databases, citizen science records, and performed in situ population surveys across the island to determine the historical and current status and distribution of psittacine species. We used count data from Ebird to determine population trends. For species whose populations were increasing, we modelled their potential distribution using niche modeling techniques. We found 46 Psittaciformes in Puerto Rico, of which 26% are only present as pets, at least 29 species have been reported in the wild, and of those, there is evidence that at least 12 species are breeding. Our results indicate that most introduced species which have been detected as established still persist, although mostly in localized areas and small populations. Clear evidence of invasiveness was found for Brotogeris versicolurus and Myiopsitta monachus, which have greatly expanded their range in recent years. Psittacara erythrogenys and Eupsittacula canicularis also showed population increases, although to a lesser degree. The niche models predicted suitable areas for the four species, and also indicate the potential for range expansion. We discuss the factors leading to invasion success, assess the potential impacts, and we discuss possible management strategies and research prospects.
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Affiliation(s)
- Wilfredo Falcón
- Department of Biology, University of Puerto Rico at Humacao, Humacao, Puerto Rico, United States of America.,Center for Applied Tropical Ecology and Conservation, University of Puerto Rico, Río Piedras, Puerto Rico, United States of America.,Bureau of Research and Conservation of Habitats and Biodiversity, Puerto Rico Department of Natural and Environmental Resources, San Juan, Puerto Rico, United States of America
| | - Raymond L Tremblay
- Department of Biology, University of Puerto Rico at Humacao, Humacao, Puerto Rico, United States of America.,Center for Applied Tropical Ecology and Conservation, University of Puerto Rico, Río Piedras, Puerto Rico, United States of America
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Polidori C, Nucifora M, Sánchez-Fernández D. Environmental niche unfilling but limited options for range expansion by active dispersion in an alien cavity-nesting wasp. BMC Ecol 2018; 18:36. [PMID: 30236094 PMCID: PMC6148766 DOI: 10.1186/s12898-018-0193-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 09/12/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Predicting the patterns of range expansion of alien species is central to develop effective strategies for managing potential biological invasions. Here, we present a study on the potential distribution of the American cavity-nesting, Orthoptera-hunting and solitary wasp, Isodontia mexicana (Hymenoptera: Sphecidae), which was first detected as alien species in France in 1960 and now is present in many European countries. After having updated its current distribution, we estimated the environmental space (based on bioclimatic data and altitude) occupied by the species and subsequently predicted its environmental potential distribution under both present and future climatic conditions at global scale. RESULTS The wasp lives in low-altitude areas of the Northern hemisphere with moderate temperatures and precipitation. The environmental space occupied in the invaded area is practically just a subset (42%) of that occupied in the native area, showing a process of environmental niche unfilling (i.e. the species only partially fills its environmental niche in the invaded range). Besides, I. mexicana could also live in other temperate areas, mainly in the Southern hemisphere, particularly close to the coasts. However, geographic (oceans) and/or climatic (tropical areas, mountain chains) barriers would prevent the species to reach these potential areas unless through human trade activity. The species could thus only reach, by active dispersion, the remaining invadable areas of Europe. Estimations for the future (2050 and 2070) predict an expansion through active dispersion towards North in the native range and towards North and East in the invaded range, but future conditions would not break down the current climatic barriers in the Southern hemisphere. CONCLUSIONS Isodontia mexicana has not shifted its environmental niche in the invaded area. It could still occupy some new areas by active dispersion, but confined to Europe. The conspicuous niche unfilling shown by this wasp species could reflect the likely single introduction in Europe just a few decades ago. Furthermore, results stay in line with other studies that found niche unfilling rather than niche expansion in insects.
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Affiliation(s)
- Carlo Polidori
- Instituto de Ciencias Ambientales (ICAM), Universidad de Castilla-La Mancha, Avenida Carlos III, s/n, 45071 Toledo, Spain
| | - Marcella Nucifora
- Dipartimento di Scienze della Vita e dell’Ambiente, Università degli Studi di Cagliari, Via Fiorelli 1, 09126 Cagliari, Italy
| | - David Sánchez-Fernández
- Instituto de Ciencias Ambientales (ICAM), Universidad de Castilla-La Mancha, Avenida Carlos III, s/n, 45071 Toledo, Spain
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24
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Yao XX, Meng QW, Li GQ. RNA interference-mediated functional characterization of aquaporin genes in Tribolium castaneum. INSECT MOLECULAR BIOLOGY 2018; 27:234-246. [PMID: 29235691 DOI: 10.1111/imb.12367] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
An obvious challenge faced by most terrestrial insects is maintaining water homeostasis in an arid environment. Current research suggests aquaporins may be evolved to meet the challenge. However, up to now, this suggestion has not been verified in any insect that feeds upon solid food with mandibulate mouthparts. In the present paper, nine putative aquaporin genes [Tribolium castaneum big brain, T. castaneum Drosophila integral protein (TcDrip), T. castaneum Pyrocoelia rufa integral protein (TcPrip), T. castaneum aquaporin 12-like, T. castaneum entomoglyceroporin 1 (TcEglp1), TcEglp2, TcEglp3, TcEglp4 and TcEglp5] were identified in T. castaneum. The transcripts of the nine genes were easily detectable in the foregut, midgut, hindgut-Malpighian tubule complex, fat body and carcass (except gut and fat body). Amongst them TcDrip, TcPrip, TcEglp1, TcEglp3 and TcEglp5 were highly transcribed in the hindgut-Malpighian tubule complex; TcEglp4 was abundantly expressed in both the fat body and hindgut-Malpighian tubule complex. RNA interference (RNAi)-mediated knockdown of TcEglp3 caused a grey larval cuticle, in contrast to a smooth and bright cuticle in control larvae. Approximately 40% of the TcEglp3 RNAi larvae had their hindguts protruding from the anus; their fresh wet faeces were attached to the hindgut. Another 20% of these treated larvae did not defaecate normally; wet brown faeces were adhered to the anal area. As a result, the larval growth was inhibited and about 60% larval lethality occurred. Silencing of TcEglp4 or TcDrip exhibited similar but weaker defective phenotypes as those of the TcEglp3-silenced larvae. Therefore, Eglp3, Eglp4 and Drip may contribute to the conductance of water in the alimentary canal and Malpighian tubules in T. castaneum.
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Affiliation(s)
- X-X Yao
- Key Laboratory of Integrated Crop Pest Management in Eastern China (Agricultural Ministry of China), College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Q-W Meng
- Key Laboratory of Integrated Crop Pest Management in Eastern China (Agricultural Ministry of China), College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - G-Q Li
- Key Laboratory of Integrated Crop Pest Management in Eastern China (Agricultural Ministry of China), College of Plant Protection, Nanjing Agricultural University, Nanjing, China
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25
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Epps MJ, Penick CA. Facultative mushroom feeding by common woodland ants (Formicidae, Aphaenogaster spp.). FOOD WEBS 2018. [DOI: 10.1016/j.fooweb.2017.12.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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26
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Let’s eat out, there’s crayfish for dinner: American bullfrog niche shifts inside and outside native ranges and the effect of introduced crayfish. Biol Invasions 2017. [DOI: 10.1007/s10530-017-1473-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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27
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Hattab T, Garzón-López CX, Ewald M, Skowronek S, Aerts R, Horen H, Brasseur B, Gallet-Moron E, Spicher F, Decocq G, Feilhauer H, Honnay O, Kempeneers P, Schmidtlein S, Somers B, Van De Kerchove R, Rocchini D, Lenoir J. A unified framework to model the potential and realized distributions of invasive species within the invaded range. DIVERS DISTRIB 2017. [DOI: 10.1111/ddi.12566] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- Tarek Hattab
- UR “Ecologie et Dynamique des Systèmes Anthropisés” (EDYSAN, FRE 3498 CNRS-UPJV); Université de Picardie Jules Verne; Amiens France
| | - Carol X. Garzón-López
- UR “Ecologie et Dynamique des Systèmes Anthropisés” (EDYSAN, FRE 3498 CNRS-UPJV); Université de Picardie Jules Verne; Amiens France
| | - Michael Ewald
- Institute of Geography and Geoecology; Karlsruhe Institute of Technology; Karlsruhe Germany
| | - Sandra Skowronek
- Institute of Geography; FAU Erlangen-Nuremberg; Erlangen Germany
| | - Raf Aerts
- Biology Department; KU Leuven; Leuven Belgium
| | - Hélène Horen
- UR “Ecologie et Dynamique des Systèmes Anthropisés” (EDYSAN, FRE 3498 CNRS-UPJV); Université de Picardie Jules Verne; Amiens France
| | - Boris Brasseur
- UR “Ecologie et Dynamique des Systèmes Anthropisés” (EDYSAN, FRE 3498 CNRS-UPJV); Université de Picardie Jules Verne; Amiens France
| | - Emilie Gallet-Moron
- UR “Ecologie et Dynamique des Systèmes Anthropisés” (EDYSAN, FRE 3498 CNRS-UPJV); Université de Picardie Jules Verne; Amiens France
| | - Fabien Spicher
- UR “Ecologie et Dynamique des Systèmes Anthropisés” (EDYSAN, FRE 3498 CNRS-UPJV); Université de Picardie Jules Verne; Amiens France
| | - Guillaume Decocq
- UR “Ecologie et Dynamique des Systèmes Anthropisés” (EDYSAN, FRE 3498 CNRS-UPJV); Université de Picardie Jules Verne; Amiens France
| | - Hannes Feilhauer
- Institute of Geography; FAU Erlangen-Nuremberg; Erlangen Germany
| | | | | | - Sebastian Schmidtlein
- Institute of Geography and Geoecology; Karlsruhe Institute of Technology; Karlsruhe Germany
| | - Ben Somers
- Department of Earth and Environmental Sciences; KU Leuven; Leuven Belgium
| | | | - Duccio Rocchini
- Center Agriculture Food Environment; University of Trento; Michele all'Adige Italy
- Centre for Integrative Biology; University of Trento; Povo Italy
| | - Jonathan Lenoir
- UR “Ecologie et Dynamique des Systèmes Anthropisés” (EDYSAN, FRE 3498 CNRS-UPJV); Université de Picardie Jules Verne; Amiens France
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28
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Hollis KL, McNew K, Sosa T, Harrsch FA, Nowbahari E. Natural aversive learning in Tetramorium ants reveals ability to form a generalizable memory of predators' pit traps. Behav Processes 2017; 139:19-25. [PMID: 28284794 DOI: 10.1016/j.beproc.2017.03.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 03/04/2017] [Accepted: 03/06/2017] [Indexed: 10/20/2022]
Abstract
Many species of ants fall prey to pit-digging larval antlions (Myrmeleon spp.), extremely sedentary predators that wait, nearly motionless at the bottom of their pit traps, for prey to stumble inside. Previous research, both in the field and laboratory, has demonstrated a remarkable ability of these ants to rescue trapped nestmates, thus sabotaging antlions' attempts to capture them. Here we show that pavement ants, Tetramorium sp. E, an invasive species and a major threat to biodiversity, possess yet another, more effective, antipredator strategy, namely the ability to learn to avoid antlion traps following a single successful escape from a pit. More importantly, we show that this learned antipredator behavior, an example of natural aversive learning in insects, is more complicated than a single cue-to-consequence form of associative learning. That is, pavement ants were able to generalize, after one experience, from the learned characteristics of the pit and its specific location, to other pits and other contexts that differed in many features. Such generalization, often described as a lack of precise stimulus control, nonetheless would be especially adaptive in nature, enabling ants to negotiate antlions' pit fields, which contain a hundred or more pits within a few centimetres of one another. Indeed, the ability to generalize in exactly this way almost certainly is responsible for the sudden, and heretofore inexplicable, behavioural modifications of ants in response to an invasion of antlions in the vicinity of an ant colony.
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Affiliation(s)
- Karen L Hollis
- Mount Holyoke College, South Hadley, MA, United States; Université Paris 13, Sorbonne Paris Cité, Villetaneuse, France.
| | - Kelsey McNew
- Mount Holyoke College, South Hadley, MA, United States
| | - Talisa Sosa
- Mount Holyoke College, South Hadley, MA, United States
| | | | - Elise Nowbahari
- Université Paris 13, Sorbonne Paris Cité, Villetaneuse, France
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29
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I’m not like everybody else: urbanization factors shaping spatial distribution of native and invasive ants are species-specific. Urban Ecosyst 2016. [DOI: 10.1007/s11252-016-0576-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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30
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Wachter GA, Papadopoulou A, Muster C, Arthofer W, Knowles LL, Steiner FM, Schlick-Steiner BC. Glacial refugia, recolonization patterns and diversification forces in Alpine-endemicMegabunusharvestmen. Mol Ecol 2016; 25:2904-19. [DOI: 10.1111/mec.13634] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 03/06/2016] [Accepted: 03/22/2016] [Indexed: 02/06/2023]
Affiliation(s)
- Gregor A. Wachter
- Molecular Ecology Group; Institute of Ecology; University of Innsbruck; Technikerstraße 25 6020 Innsbruck Austria
| | - Anna Papadopoulou
- Department of Ecology and Evolutionary Biology; Museum of Zoology; University of Michigan; Ann Arbor MI 48109-1079 USA
- Department of Integrative Ecology; Estación Biológica de Doñana (CSIC); 41092 Seville Spain
| | - Christoph Muster
- Zoological Institute and Museum; University of Greifswald; Johann-Sebastian-Bach-Straße 11/12 17487 Greifswald Germany
| | - Wolfgang Arthofer
- Molecular Ecology Group; Institute of Ecology; University of Innsbruck; Technikerstraße 25 6020 Innsbruck Austria
| | - L. Lacey Knowles
- Department of Ecology and Evolutionary Biology; Museum of Zoology; University of Michigan; Ann Arbor MI 48109-1079 USA
| | - Florian M. Steiner
- Molecular Ecology Group; Institute of Ecology; University of Innsbruck; Technikerstraße 25 6020 Innsbruck Austria
| | - Birgit C. Schlick-Steiner
- Molecular Ecology Group; Institute of Ecology; University of Innsbruck; Technikerstraße 25 6020 Innsbruck Austria
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31
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Penick CA, Savage AM, Dunn RR. Stable isotopes reveal links between human food inputs and urban ant diets. Proc Biol Sci 2016; 282:20142608. [PMID: 25833850 DOI: 10.1098/rspb.2014.2608] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
The amount of energy consumed within an average city block is an order of magnitude higher than that consumed in any other ecosystem over a similar area. This is driven by human food inputs, but the consequence of these resources for urban animal populations is poorly understood. We investigated the role of human foods in ant diets across an urbanization gradient in Manhattan using carbon and nitrogen stable isotopes. We found that some-but not all-ant species living in Manhattan's most urbanized habitats had δ(13)C signatures associated with processed human foods. In particular, pavement ants (Tetramorium sp. E) had increased levels of δ(13)C similar to δ(13)C levels in human fast foods. The magnitude of this effect was positively correlated with urbanization. By contrast, we detected no differences in δ(15)N, suggesting Tetramorium feeds at the same trophic level despite shifting to human foods. This pattern persisted across the broader ant community; species in traffic islands used human resources more than park species. Our results demonstrate that the degree urban ants exploit human resources changes across the city and among species, and this variation could play a key role in community structure and ecosystem processes where human and animal food webs intersect.
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Affiliation(s)
- Clint A Penick
- Department of Biological Sciences and Keck Center for Behavioral Biology, North Carolina State University, Raleigh, NC 27695, USA
| | - Amy M Savage
- Department of Biological Sciences and Keck Center for Behavioral Biology, North Carolina State University, Raleigh, NC 27695, USA Biology Department, Rutgers, The State University of New Jersey, Camden, NJ 08103, USA
| | - Robert R Dunn
- Department of Biological Sciences and Keck Center for Behavioral Biology, North Carolina State University, Raleigh, NC 27695, USA
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32
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Tagwireyi P, Sullivan SMP. Riverine Landscape Patch Heterogeneity Drives Riparian Ant Assemblages in the Scioto River Basin, USA. PLoS One 2015; 10:e0124807. [PMID: 25894540 PMCID: PMC4403917 DOI: 10.1371/journal.pone.0124807] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2014] [Accepted: 03/18/2015] [Indexed: 11/18/2022] Open
Abstract
Although the principles of landscape ecology are increasingly extended to include riverine landscapes, explicit applications are few. We investigated associations between patch heterogeneity and riparian ant assemblages at 12 riverine landscapes of the Scioto River, Ohio, USA, that represent urban/developed, agricultural, and mixed (primarily forested, but also wetland, grassland/fallow, and exurban) land-use settings. Using remotely-sensed and ground-collected data, we delineated riverine landscape patch types (crop, grass/herbaceous, gravel, lawn, mudflat, open water, shrub, swamp, and woody vegetation), computed patch metrics (area, density, edge, richness, and shape), and conducted coordinated sampling of surface-active Formicidae assemblages. Ant density and species richness was lower in agricultural riverine landscapes than at mixed or developed reaches (measured using S [total number of species], but not using Menhinick’s Index [DM]), whereas ant diversity (using the Berger-Park Index [DBP]) was highest in agricultural reaches. We found no differences in ant density, richness, or diversity among internal riverine landscape patches. However, certain characteristics of patches influenced ant communities. Patch shape and density were significant predictors of richness (S: R2 = 0.72; DM: R2=0.57). Patch area, edge, and shape emerged as important predictors of DBP (R2 = 0.62) whereas patch area, edge, and density were strongly related to ant density (R2 = 0.65). Non-metric multidimensional scaling and analysis of similarities distinguished ant assemblage composition in grass and swamp patches from crop, gravel, lawn, and shrub as well as ant assemblages in woody vegetation patches from crop, lawn, and gravel (stress = 0.18, R2 = 0.64). These findings lend insight into the utility of landscape ecology to river science by providing evidence that spatial habitat patterns within riverine landscapes can influence assemblage characteristics of riparian arthropods.
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Affiliation(s)
- Paradzayi Tagwireyi
- School of Environment & Natural Resources, The Ohio State University, 2021 Coffey Rd., Columbus, OH, 43210, United States of America
- * E-mail:
| | - S. Mažeika P. Sullivan
- School of Environment & Natural Resources, The Ohio State University, 2021 Coffey Rd., Columbus, OH, 43210, United States of America
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33
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Montemayor SI, Dellapé PM, Melo MC. Predicting the potential invasion suitability of regions to cassava lacebug pests (Heteroptera: Tingidae: Vatiga spp.). BULLETIN OF ENTOMOLOGICAL RESEARCH 2015; 105:173-181. [PMID: 25523908 DOI: 10.1017/s0007485314000856] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Cassava (Manihot esculenta Crantz) is one of the most important staple crops for small farmers in the tropics, feeding about 800 million people worldwide. It is currently cultivated in South and Central America, Africa and Asia. The genus Vatiga is widespread throughout the Neotropical region. Its species are sympatric and feed exclusively on cassava. The main objectives of this paper are: (1) to assess the potential distribution of Vatiga, one of the most relevant pests of cassava; (2) to project the resulting models onto the world; (3) to recognize areas with suitable and optimal climates (and thus, high probability) for future colonization, and (4) to compare this model with the harvested area of cassava analyzing the climatic variables required by both the host and the pest species. Species distribution models were built using Maxent (v3.3.3k) with bioclimatic variables from the WorldClim database in 2.5 arc min resolution across the globe. Our model shows that Vatiga has the potential to expand its current distribution into other suitable areas, and could invade other regions where cassava is already cultivated, e.g., Central Africa and Asia. Considering the results and the high host specificity of Vatiga, its recent appearance in Réunion Island (Africa) poses a serious threat, as nearby areas are potentially suitable for invasion and could serve as dispersal routes enabling Vatiga to reach the continent. The present work may help prevention or early detection of Vatiga spp. in areas where cassava is grown.
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Affiliation(s)
- S I Montemayor
- División Entomología,Museo de La Plata,Universidad Nacional de La Plata,Paseo del Bosque s/n,B1900FWA,La Plata,Argentina
| | - P M Dellapé
- División Entomología,Museo de La Plata,Universidad Nacional de La Plata,Paseo del Bosque s/n,B1900FWA,La Plata,Argentina
| | - M C Melo
- División Entomología,Museo de La Plata,Universidad Nacional de La Plata,Paseo del Bosque s/n,B1900FWA,La Plata,Argentina
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Papeş M, Cuzin F, Gaubert P. Niche dynamics in the European ranges of two African carnivores reflect their dispersal and demographic histories. Biol J Linn Soc Lond 2015. [DOI: 10.1111/bij.12477] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Monica Papeş
- Department of Zoology; Oklahoma State University; 501 Life Sciences West Stillwater OK 74078 USA
| | | | - Philippe Gaubert
- Institut des Sciences de l'Evolution de Montpellier (ISEM) - UM2-CNRS-IRD; Université Montpellier 2; Place Eugène Bataillon - CC 64 34095 Montpellier, Cedex 05 France
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Bean WT, Stafford R, Butterfield HS, Brashares JS. A multi-scale distribution model for non-equilibrium populations suggests resource limitation in an endangered rodent. PLoS One 2014; 9:e106638. [PMID: 25237807 PMCID: PMC4169526 DOI: 10.1371/journal.pone.0106638] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Accepted: 08/08/2014] [Indexed: 11/19/2022] Open
Abstract
Species distributions are known to be limited by biotic and abiotic factors at multiple temporal and spatial scales. Species distribution models, however, frequently assume a population at equilibrium in both time and space. Studies of habitat selection have repeatedly shown the difficulty of estimating resource selection if the scale or extent of analysis is incorrect. Here, we present a multi-step approach to estimate the realized and potential distribution of the endangered giant kangaroo rat. First, we estimate the potential distribution by modeling suitability at a range-wide scale using static bioclimatic variables. We then examine annual changes in extent at a population-level. We define "available" habitat based on the total suitable potential distribution at the range-wide scale. Then, within the available habitat, model changes in population extent driven by multiple measures of resource availability. By modeling distributions for a population with robust estimates of population extent through time, and ecologically relevant predictor variables, we improved the predictive ability of SDMs, as well as revealed an unanticipated relationship between population extent and precipitation at multiple scales. At a range-wide scale, the best model indicated the giant kangaroo rat was limited to areas that received little to no precipitation in the summer months. In contrast, the best model for shorter time scales showed a positive relation with resource abundance, driven by precipitation, in the current and previous year. These results suggest that the distribution of the giant kangaroo rat was limited to the wettest parts of the drier areas within the study region. This multi-step approach reinforces the differing relationship species may have with environmental variables at different scales, provides a novel method for defining "available" habitat in habitat selection studies, and suggests a way to create distribution models at spatial and temporal scales relevant to theoretical and applied ecologists.
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Affiliation(s)
- William T. Bean
- Humboldt State University, Arcata, California, United States of America
| | - Robert Stafford
- California Department of Fish and Game, Los Osos, California, United States of America
| | | | - Justin S. Brashares
- Department of Environmental Science, Policy and Management, University of California, Berkeley, California, United States of America
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Motloung R, Robertson M, Rouget M, Wilson J. Forestry trial data can be used to evaluate climate-based species distribution models in predicting tree invasions. NEOBIOTA 2014. [DOI: 10.3897/neobiota.20.5778] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Panassiti B, Breuer M, Marquardt S, Biedermann R. Influence of environment and climate on occurrence of the cixiid planthopper Hyalesthes obsoletus, the vector of the grapevine disease 'bois noir'. BULLETIN OF ENTOMOLOGICAL RESEARCH 2013; 103:621-633. [PMID: 23628148 DOI: 10.1017/s0007485313000163] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Species distribution models (SDMs), which are well established in many fields of biological research, are still uncommon in the agricultural risk analysis of pest insects. To exemplify the use of SDMs, we investigated the influence of environmental factors on the occurrence of Hyalesthes obsoletus Signoret (Hemiptera: Cixiidae). The planthopper is the only known vector of the grapevine yellows disease 'bois noir'. The study was conducted in 145 locations in the Baden region of southwest Germany. The planthopper was surveyed on host plant patches, consisting of stinging nettle and/or bindweeds. We used a stratified modelling framework where (1) species presence-absence data were related to an extensive environmental dataset using logistic regressions; and (2) different types of average models were developed based on an information theoretic method. The results show that the incidence of H. obsoletus is associated to above- as well as below-ground environmental factors, particularly to the amount of fine soil and average annual precipitation. This result was consistent across all average models. The relative importance of other environmental variables was dependent upon the average model under consideration and thus may vary according to their intended use, either the explanation of habitat requirements or the prediction and mapping of occurrence risks. The study showed that SDMs offer a quantification of species' habitat requirements and thus, could represent a valuable tool for pest management purposes. By providing examples of current issues of grapevine pests in viticulture, we discuss the use of SDMs in agricultural risk analysis and highlight their advantages and caveats.
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Affiliation(s)
- Bernd Panassiti
- State Institute of Viticulture and Oenology, Freiburg, Germany
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Bertelsmeier C, Guénard B, Courchamp F. Climate change may boost the invasion of the Asian needle ant. PLoS One 2013; 8:e75438. [PMID: 24124489 PMCID: PMC3790791 DOI: 10.1371/journal.pone.0075438] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Accepted: 08/14/2013] [Indexed: 11/18/2022] Open
Abstract
Following its introduction from Asia to the USA, the Asian needle ant (Pachycondyla chinensis) is rapidly spreading into a wide range of habitats with great negative ecological affects. In addition, the species is a concern for human health because of its powerful, sometimes deadly, sting. Here, we assessed the potential of P. chinensis to spread further and to invade entirely new regions. We used species distribution models to assess suitable areas under current climatic conditions and in 2020, 2050 and 2080. With a consensus model, combining five different modelling techniques, three Global Circulation (climatic) Models and two CO2 emission scenarios, we generated world maps with suitable climatic conditions. Our models suggest that the species currently has a far greater potential distribution than its current exotic range, including large parts of the world landmass, including Northeast America, Southeast Asia and Southeast America. Climate change is predicted to greatly exacerbate the risk of P. chinensis invasion by increasing the suitable landmass by 64.9% worldwide, with large increases in Europe (+210.1%), Oceania (+75.1%), North America (+74.9%) and Asia (+62.7%). The results of our study suggest P. chinensis deserves increased attention, especially in the light of on-going climate change.
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Affiliation(s)
| | - Benoît Guénard
- Biodiversity and Biocomplexity Unit, Okinawa Institute of Science and Technology, Okinawa, Japan
| | - Franck Courchamp
- Ecologie, Systématique & Evolution, Univ. Paris Sud, Orsay, France
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Xu Z, Feng Z, Yang J, Zheng J, Zhang F. Nowhere to invade: Rumex crispus and Typha latifolia projected to disappear under future climate scenarios. PLoS One 2013; 8:e70728. [PMID: 23923020 PMCID: PMC3726609 DOI: 10.1371/journal.pone.0070728] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Accepted: 06/20/2013] [Indexed: 11/19/2022] Open
Abstract
Future climate change has been predicted to affect the potential distribution of plant species. However, only few studies have addressed how invasive species may respond to future climate change despite the known effects of plant species invasion on nutrient cycles, ecosystem functions, and agricultural yields. In this study, we predicted the potential distributions of two invasive species, Rumex crispus and Typha latifolia, under current and future (2050) climatic conditions. Future climate scenarios considered in our study include A1B, A2, A2A, B1, and B2A. We found that these two species will lose their habitat under the A1B, A2, A2A, and B1 scenarios. Their distributions will be maintained under future climatic conditions related to B2A scenarios, but the total area will be less than 10% of that under the current climatic condition. We also investigated variations of the most influential climatic variables that are likely to cause habitat loss of the two species. Our results demonstrate that rising mean annual temperature, variations of the coldest quarter, and precipitation of the coldest quarter are the main factors contributing to habitat loss of R. crispus. For T. latifolia, the main factors are rising mean annual temperature, variations in temperature of the coldest quarter, mean annual precipitation, and precipitation of the coldest quarter. These results demonstrate that the warmer and wetter climatic conditions of the coldest season (or month) will be mainly responsible for habitat loss of R. crispus and T. latifolia in the future. We also discuss uncertainties related to our study (and similar studies) and suggest that particular attention should be directed toward the manner in which invasive species cope with rapid climate changes because evolutionary change can be rapid for species that invade new areas.
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Affiliation(s)
- Zhonglin Xu
- College of Resource & Environmental Science, Xinjiang University, Urumqi, China.
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Puschendorf R, Hodgson L, Alford RA, Skerratt LF, VanDerWal J. Underestimated ranges and overlooked refuges from amphibian chytridiomycosis. DIVERS DISTRIB 2013. [DOI: 10.1111/ddi.12091] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Affiliation(s)
| | | | | | - Lee F. Skerratt
- School of Public Health, Tropical Medicine and Rehabilitation Sciences; James Cook University; Townsville; Qld 4811; Australia
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Lobos G, Cattan P, Estades C, Jaksic FM. Invasive African clawed frogXenopus laevisin southern South America: key factors and predictions. STUDIES ON NEOTROPICAL FAUNA AND ENVIRONMENT 2013. [DOI: 10.1080/01650521.2012.746050] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Storlie CJ, Phillips BL, VanDerWal JJ, Williams SE. Improved spatial estimates of climate predict patchier species distributions. DIVERS DISTRIB 2013. [DOI: 10.1111/ddi.12068] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- C. J. Storlie
- Centre for Tropical Biodiversity and Climate Change; School of Marine and Tropical Biology; James Cook University; Townsville; Qld; 4810; Australia
| | - B. L. Phillips
- Centre for Tropical Biodiversity and Climate Change; School of Marine and Tropical Biology; James Cook University; Townsville; Qld; 4810; Australia
| | - J. J. VanDerWal
- Centre for Tropical Biodiversity and Climate Change; School of Marine and Tropical Biology; James Cook University; Townsville; Qld; 4810; Australia
| | - S. E. Williams
- Centre for Tropical Biodiversity and Climate Change; School of Marine and Tropical Biology; James Cook University; Townsville; Qld; 4810; Australia
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Fernández M, Hamilton H, Alvarez O, Guo Q. Does adding multi-scale climatic variability improve our capacity to explain niche transferability in invasive species? Ecol Modell 2012. [DOI: 10.1016/j.ecolmodel.2012.07.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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ANGETTER LEASU, LÖTTERS STEFAN, RÖDDER DENNIS. Climate niche shift in invasive species: the case of the brown anole. Biol J Linn Soc Lond 2011. [DOI: 10.1111/j.1095-8312.2011.01780.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Januchowski-Hartley S, VanDerWal J, Sydes D. Effective control of aquatic invasive species in tropical Australia. ENVIRONMENTAL MANAGEMENT 2011; 48:568-576. [PMID: 21556935 DOI: 10.1007/s00267-011-9686-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2010] [Accepted: 04/19/2011] [Indexed: 05/30/2023]
Abstract
Often ecologists and natural resource managers can easily access data on invasive species occurrence across a region. Yet, collecting species abundance data over a large area is arguably more important for decision making, but inherently costly, so methods which can provide robust information at low-cost are particularly valuable. Studies of species distribution often use occurrence data to build models of the environmental niche. Environmental suitability derived from such models may be used to predict the potential distributions of species. The ability of such models to predict spatial patterns in abundance have recently been demonstrated. Here we tested the relationship of environmental suitability with local abundance of an aquatic invasive species, olive hymenachne (Hymenachne amplexicaulis) in the Wet Tropics of Australia. Ordinary least squares and quantile regressions revealed a positive relationship between environmental suitability and local abundance of olive hymenachne. We expand on this and use the relationship between environmental suitability and local abundance to quantify the effectiveness of management (reduction in local abundance) under four different management investments. We show that the upper limit of abundance can be used to evaluate management effectiveness based on varying investments, and that ongoing management is the most effective at reducing local abundance. We discuss implications of this in addressing important problems in invasive species management.
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Affiliation(s)
- Stephanie Januchowski-Hartley
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD, 4811, Australia.
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Chown SL, Sørensen JG, Terblanche JS. Water loss in insects: an environmental change perspective. JOURNAL OF INSECT PHYSIOLOGY 2011; 57:1070-84. [PMID: 21640726 DOI: 10.1016/j.jinsphys.2011.05.004] [Citation(s) in RCA: 192] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2011] [Revised: 05/06/2011] [Accepted: 05/06/2011] [Indexed: 05/15/2023]
Abstract
In the context of global environmental change much of the focus has been on changing temperatures. However, patterns of rainfall and water availability have also been changing and are expected to continue doing so. In consequence, understanding the responses of insects to water availability is important, especially because it has a pronounced influence on insect activity, distribution patterns, and species richness. Here we therefore provide a critical review of key questions that either are being or need to be addressed in this field. First, an overview of insect behavioural responses to changing humidity conditions and the mechanisms underlying sensing of humidity variation is provided. The primary sensors in insects belong to the temperature receptor protein superfamily of cation channels. Temperature-activated transient receptor potential ion channels, or thermoTRPs, respond to a diverse range of stimuli and may be a primary integrator of sensory information, such as environmental temperature and moisture. Next we touch briefly on the components of water loss, drawing attention to a new, universal model of the water costs of gas exchange and its implications for responses to a warming, and in places drying, world. We also provide an overview of new understanding of the role of the sub-elytral chamber for water conservation, and developments in understanding of the role of cuticular hydrocarbons in preventing water loss. Because of an increasing focus on the molecular basis of responses to dehydration stress we touch briefly on this area, drawing attention to the role of sugars, heat shock proteins, aquaporins, and LEA proteins. Next we consider phenotypic plasticity or acclimation responses in insect water balance after initial exposures to altered humidity, temperature or nutrition. Although beneficial acclimation has been demonstrated in several instances, this is not always the case. Laboratory studies show that responses to selection for enhanced ability to survive water stress do evolve and that genetic variation for traits underlying such responses does exist in many species. However, in others, especially tropical, typically narrowly distributed species, this appears not to be the case. Using the above information we then demonstrate that habitat alteration, climate change, biological invasions, pollution and overexploitation are likely to be having considerable effects on insect populations mediated through physiological responses (or the lack thereof) to water stress, and that these effects may often be non-intuitive.
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Affiliation(s)
- Steven L Chown
- Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa.
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Global invasion by Anthidium manicatum (Linnaeus) (Hymenoptera: Megachilidae): assessing potential distribution in North America and beyond. Biol Invasions 2011. [DOI: 10.1007/s10530-011-0030-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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48
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Giljohann KM, Hauser CE, Williams NSG, Moore JL. Optimizing invasive species control across space: willow invasion management in the Australian Alps. J Appl Ecol 2011. [DOI: 10.1111/j.1365-2664.2011.02016.x] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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