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de Alcantara Viana JV, Duarte RC, Lambertini C, Capoccia F, Martins ALO, Vieira C, Romero GQ. Differential Survival and Background Selection in Cryptic Trunk-Dwelling Arthropods in Fire-Prone Environments. Am Nat 2024; 204:E128-E145. [PMID: 39556874 DOI: 10.1086/732864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2024]
Abstract
AbstractFire events change background color, impairing camouflage strategies. However, selection for polymorphic populations may increase camouflage and survival by reducing predation risks. We conducted experiments addressing background selection and predation pressures on the effectiveness of arthropod camouflage against predation in burned and unburned trunks. We tested color and luminance contrasts, as well as trunk preferences, in a color polymorphic grasshopper and praying mantis species with melanic and brown morphs, and a spider species with a single dark color. To expand the scope of our study, we used two distinct visual models of avian predators: ultraviolet sensitive and violet sensitive. We also performed predation experiments using theoretical prey exhibiting black and brown color and human "predators" to understand the effectiveness of color polymorphism against different trunk conditions. Melanic morphs had lower achromatic contrast in burned backgrounds for both visual systems, suggesting that melanism promotes advantages against predation over long distances. However, only spiders actively selected the low-contrasting burned trunks, indicating habitat specialization. The predation experiments showed that black models benefited from camouflage on burned trunks. Conversely, brown models elicited more time and reduced distance in predator searching compared with the black targets on unburned trunks. We suggest that postfire effects can enhance color contrasts and increase predation over color-mismatching individuals, which translates into selection pressures for color polymorphism and matching background choices.
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2
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Roggero A, Alù D, Laini A, Rolando A, Palestrini C. Color polymorphism and mating trends in a population of the alpine leaf beetle Oreina gloriosa. PLoS One 2024; 19:e0298330. [PMID: 38530852 PMCID: PMC10965098 DOI: 10.1371/journal.pone.0298330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Accepted: 01/18/2024] [Indexed: 03/28/2024] Open
Abstract
The bright colors of Alpine leaf beetles (Coleoptera, Chrysomelidae) are thought to act as aposematic signals against predation. Within the European Alps, at least six species display a basal color of either blue or green, likely configuring a classic case of müllerian mimicry. In this context, intra-population color polymorphism is paradoxical as the existence of numerous color morphs might hamper the establishment of a search image in visual predators. Assortative mating may be one of the main factors contributing to the maintenance of polymorphic populations. Due to the marked iridescence of these leaf beetles, the perceived color may change as the viewing or illumination angle changes. The present study, conducted over three years, involved intensive sampling of a population of Oreina gloriosa from the Italian Alps and applied colorimetry and a decision tree method to identify the color morphs in an objective manner. The tertiary sex ratio of the population was biased in favor of males, suggesting that viviparous females hide to give birth. Seven color morphs were identified, and their frequencies varied significantly over the course of the study. Three different analyses of mating (JMating, QInfomating, and Montecarlo simulations) recognized a general trend for random mating which coexists with some instances of positive and negative assortative mating. This could help explain the pre-eminence of one morph (which would be favored because of positive selection due to positive assortative mating) in parallel with the persistence of six other morphs (maintained due to negative assortative mating).
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Affiliation(s)
- Angela Roggero
- Department of Life Sciences and Systems Biology, University of Turin, Torino, Italy
| | - Daniele Alù
- Department of Life Sciences and Systems Biology, University of Turin, Torino, Italy
| | - Alex Laini
- Department of Life Sciences and Systems Biology, University of Turin, Torino, Italy
| | - Antonio Rolando
- Department of Life Sciences and Systems Biology, University of Turin, Torino, Italy
| | - Claudia Palestrini
- Department of Life Sciences and Systems Biology, University of Turin, Torino, Italy
- NBFC, National Biodiversity Future Center, Palermo, Italy
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3
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Nokelainen O, Silvasti SA, Strauss SY, Wahlberg N, Mappes J. Predator selection on phenotypic variability of cryptic and aposematic moths. Nat Commun 2024; 15:1678. [PMID: 38395999 PMCID: PMC10891176 DOI: 10.1038/s41467-024-45329-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 01/17/2024] [Indexed: 02/25/2024] Open
Abstract
Natural selection generally favours phenotypic variability in camouflaged organisms, whereas aposematic organisms are expected to evolve a more uniform warning coloration. However, no comprehensive analysis of the phenotypic consequences of predator selection in aposematic and cryptic species exists. Using state-of-the-art image analysis, we examine 2800 wing images of 82 moth species accessed via three online museum databases. We test whether anti-predator strategy (i.e., camouflage or aposematism) explains intraspecific variation in wing colour and pattern across northern hemisphere moths. In addition, we test two mutually non-exclusive, ecological hypotheses to explain variation in colour pattern: diel-activity or dietary-niche. In this work, taking into account phylogenetic relationships, moth phenotypic variability is best explained by anti-predator strategy with camouflaged moths being more variable in wing patterning than aposematic species.
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Affiliation(s)
- Ossi Nokelainen
- Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Viikki Biocenter 3, P.O. Box 65, 40014, Helsinki, Finland.
- Department of Biological and Environmental Science, University of Jyväskylä, P.O. Box 35, FI-40014, Jyväskylä, Finland.
- Open Science Centre, University of Jyväskylä, P.O. Box 35, FI-40014, Jyväskylä, Finland.
| | - Sanni A Silvasti
- Department of Biological and Environmental Science, University of Jyväskylä, P.O. Box 35, FI-40014, Jyväskylä, Finland
- School of Natural Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Sharon Y Strauss
- Department of Evolution and Ecology, University of California at Davis, 2320 Storer Hall, One Shields Avenue, Davis, CA, 95616, USA
- Wissenschaftskolleg zu Berlin, Wallotstrasse 19, Berlin, 14193, Germany
| | - Niklas Wahlberg
- Department of Biology, Lund University, Sölvegatan 37, SE-223 62, Lund, Sweden
| | - Johanna Mappes
- Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Viikki Biocenter 3, P.O. Box 65, 40014, Helsinki, Finland.
- Wissenschaftskolleg zu Berlin, Wallotstrasse 19, Berlin, 14193, Germany.
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4
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de Alcantara Viana JV, Campos Duarte R, Vieira C, Augusto Poleto Antiqueira P, Bach A, de Mello G, Silva L, Rabelo Oliveira Leal C, Quevedo Romero G. Crypsis by background matching and disruptive coloration as drivers of substrate occupation in sympatric Amazonian bark praying mantises. Sci Rep 2023; 13:19985. [PMID: 37968331 PMCID: PMC10652001 DOI: 10.1038/s41598-023-46204-x] [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: 08/02/2023] [Accepted: 10/29/2023] [Indexed: 11/17/2023] Open
Abstract
Background matching and disruptive coloration are common camouflage strategies in nature, but few studies have accurately measured their protective value in living organisms. Amazon's Bark praying mantises exhibit colour patterns matching whitish and greenish-brown tree trunks. We tested the functional significance of background matching and disruptive coloration of different praying mantis morphospecies (white, grey and green) detected by DNA barcoding. Through image analysis, avian visual models and field experiments using humans as potential predators, we explored whether the background occupation of mantises provides camouflage against predation. Data were obtained for individuals against their occupied tree trunks (whitish or greenish-brown) and microhabitats (lichen or bryophyte patches), compared to non-occupied trunks. White and grey mantises showed lower colour contrasts against occupied trunks at the scale of tree trunk, with no differences in luminance contrasts. Conversely, green mantises showed lower colour and luminance contrasts against microhabitats and also exhibited high edge disruption against greenish-brown trunks. The camouflage of white and green mantis models against colour-matching trunks increased search time and reduced encounter distance of human predators. We highlight the importance of camouflage strategies at different spatial scales to enhance individual survival against predators. Specifically, we present a stunning study system to investigate the relationship of phylogenetically related species that use camouflage in sympatry.
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Affiliation(s)
- João Vitor de Alcantara Viana
- Programa de Pós-Graduação em Ecologia, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil.
- Laboratório de Interações Multitróficas e Biodiversidade, Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), CP 6109, Campinas, São Paulo, CEP 13083-970, Brazil.
| | - Rafael Campos Duarte
- Universidade Federal Do ABC, São Bernardo Do Campo, São Paulo, CEP 09606-045, Brazil
- Centre for Ecology and Conservation, College of Life and Environmental Sciences, University of Exeter, Penryn Campus, Penryn, TR10 9FE, UK
| | - Camila Vieira
- Departamento de Ciências Básicas, Universidade de São Paulo (USP), Campus de Pirassununga, Pirassununga, São Paulo, CEP 13635-900, Brazil
| | - Pablo Augusto Poleto Antiqueira
- Laboratório de Interações Multitróficas e Biodiversidade, Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), CP 6109, Campinas, São Paulo, CEP 13083-970, Brazil
| | - Andressa Bach
- Programa de Pós-Graduação Em Ecologia E Conservação da Biodiversidade, Instituto de Biociências, Universidade Federal de Mato Grosso, Avenida Fernando Corrêa da Costa, N° 2367, Boa Esperança, Cuiabá, 78060900, Brazil
| | - Gabriel de Mello
- Programa de Pós-Graduação Em Ecologia E Conservação da Biodiversidade, Instituto de Biociências, Universidade Federal de Mato Grosso, Avenida Fernando Corrêa da Costa, N° 2367, Boa Esperança, Cuiabá, 78060900, Brazil
| | - Lorhaine Silva
- Programa de Pós-Graduação Em Ecologia E Conservação da Biodiversidade, Instituto de Biociências, Universidade Federal de Mato Grosso, Avenida Fernando Corrêa da Costa, N° 2367, Boa Esperança, Cuiabá, 78060900, Brazil
| | - Camila Rabelo Oliveira Leal
- Laboratório de Interações Multitróficas e Biodiversidade, Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), CP 6109, Campinas, São Paulo, CEP 13083-970, Brazil
| | - Gustavo Quevedo Romero
- Laboratório de Interações Multitróficas e Biodiversidade, Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), CP 6109, Campinas, São Paulo, CEP 13083-970, Brazil
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5
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Franzén M, Forsman A, Karimi B. Anthropogenic Influence on Moth Populations: A Comparative Study in Southern Sweden. INSECTS 2023; 14:702. [PMID: 37623412 PMCID: PMC10455763 DOI: 10.3390/insects14080702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/08/2023] [Accepted: 08/10/2023] [Indexed: 08/26/2023]
Abstract
As moths are vital components of ecosystems and serve as important bioindicators, understanding the dynamics of their communities and the factors influencing these dynamics, such as anthropogenic impacts, is crucial to understand the ecological processes. Our study focuses on two provinces in southern Sweden, Västergötland and Småland, where we used province records from 1974 to 2019 in combination with light traps (in 2020) to record the presence and abundance of moth species, subsequently assessing species traits to determine potential associations with their presence in anthropogenically modified landscapes. This study design provides a unique opportunity to assess temporal changes in moth communities and their responses to shifts in environmental conditions, including anthropogenic impacts. Across the Västergötland and Småland provinces in Sweden, we recorded 776 moth taxa belonging to fourteen different taxonomic families of mainly Macroheterocera. We captured 44% and 28% of the total moth species known from these provinces in our traps in Borås (Västergötland) and Kalmar (Småland), respectively. In 2020, the species richness and abundance were higher in Borås than in Kalmar, while the Shannon and Simpson diversity indices revealed a higher species diversity in Kalmar. Between 1974 and 2019, the colonisation rates of the provinces increased faster in Småland. Ninety-three species were found to have colonised these provinces since 1974, showing that species richness increased over the study period. We reveal significant associations between the probability of a species being present in the traps and distinct traits compared to a provincial species pool. Traits over-represented in the traps included species with a high variation in colour patterns, generalist habitat preferences, extended flight periods, lower host plant specificity, and overwintering primarily as eggs. Our findings underscore the ongoing ecological filtering that favours certain species-specific traits. This study sheds light on the roles of climate change and anthropogenic impacts in shaping moth biodiversity, offers key insights into the ecological processes involved, and can guide future conservation efforts.
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Affiliation(s)
- Markus Franzén
- Department of Biology and Environmental Science, Linnaeus University, 391 82 Kalmar, Sweden; (A.F.); (B.K.)
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Connors MG, Yeeles P, Lach L, Rentz DCF. Revision of the genus Calofulcinia Giglio-Tos (Mantodea: Nanomantidae: Fulciniinae) in Australia. Zootaxa 2023; 5296:333-361. [PMID: 37518440 DOI: 10.11646/zootaxa.5296.3.2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Indexed: 08/01/2023]
Abstract
The genus Calofulcinia comprises several species of small, cryptic mantis, three of which have been described from Australia. The genus is infrequently recorded and is thus very poorly known, and even basic questions of species delimitation and distribution have remained virtually unknown since the descriptions of these taxa. We here redescribe and figure the three known Australian species of Calofulcinia in full and provide a detailed key to Australian species. We record significant range extensions for all three species, and provide the first detailed behavioural and ecological records for the genus. In addition, we group the Australian species into a Robust Group (C. paraoxypila) and a Gracile Group (C. australis and C. oxynota), we detail the occurrence of colour polymorphism within the genus, and finally we discuss the apparent microhabitat specificity of Calofulcinia spp. (mosses and lichens) and their preference for cool, moist environments with reference to our changing climate.
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Affiliation(s)
- Matthew G Connors
- College of Science and Engineering; James Cook University; PO Box 6811; Cairns; QLD; 4870; Australia.
| | - Peter Yeeles
- College of Science and Engineering; James Cook University; PO Box 6811; Cairns; QLD; 4870; Australia.
| | - Lori Lach
- College of Science and Engineering; James Cook University; PO Box 6811; Cairns; QLD; 4870; Australia.
| | - David C F Rentz
- Adjunct Professor; College of Science and Engineering; James Cook University; PO Box 6811; Cairns; QLD; 4870; Australia.
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7
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Lo YC, Blamires SJ, Liao CP, Tso IM. Nocturnal and diurnal predator and prey interactions with crab spider color polymorphs. Behav Ecol Sociobiol 2023. [DOI: 10.1007/s00265-023-03291-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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8
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Mather J. The Case for Octopus Consciousness: Temporality. NEUROSCI 2022; 3:245-261. [PMID: 39483366 PMCID: PMC11523685 DOI: 10.3390/neurosci3020018] [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: 03/09/2022] [Accepted: 04/26/2022] [Indexed: 11/03/2024] Open
Abstract
Temporality is one of the criteria that Birch has advanced for areas of cognitive ability that may underlie animal sentience. An ability to integrate and use information across time must be more than simply learning pieces of information and retrieving them. This paper looks at such wider use of information by octopuses across time. It evaluates accumulation of information about one's place in space, as used across immediate egocentric localization by cuttlefish and medium distance navigation in octopuses. Information about useful items in the environment can be incorporated for future use by octopuses, including for shelter in antipredator situations. Finding prey is not random but can be predicted by environmental cues, especially by cuttlefish about future contingencies. Finally, the paper examines unlimited associative learning and constraints on learning, and the ability of cephalopods to explore and seek out information, even by play, for future use.
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Affiliation(s)
- Jennifer Mather
- Department of Psychology, University of Lethbridge, Lethbridge, AB T1K 3M4, Canada;
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9
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McMahon O, Smyth T, Davies TW. Broad spectrum artificial light at night increases the conspicuousness of camouflaged prey. J Appl Ecol 2022. [DOI: 10.1111/1365-2664.14146] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Oak McMahon
- School of Biological and Marine Sciences University of Plymouth Plymouth UK
| | - Tim Smyth
- Plymouth Marine Laboratory Plymouth UK
| | - Thomas W. Davies
- School of Biological and Marine Sciences University of Plymouth Plymouth UK
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10
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Fark SN, Gerber S, Alonzo SH, Kindsvater HK, Meier JI, Seehausen O. Multispecies colour polymorphisms associated with contrasting microhabitats in two Mediterranean wrasse radiations. J Evol Biol 2022; 35:633-647. [PMID: 35304789 PMCID: PMC9311657 DOI: 10.1111/jeb.13999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 02/14/2022] [Accepted: 02/20/2022] [Indexed: 12/01/2022]
Abstract
Intraspecific colour polymorphisms (CPs) present unique opportunities to study fundamental evolutionary questions, such as the link between ecology and phenotype, mechanisms maintaining genetic diversity and their putative role in speciation. Wrasses are highly diverse in ecology and morphology and harbour a variety of colour‐polymorphic species. In the Mediterranean Sea, wrasses of the tribe Labrini evolved two species radiations each harbouring several species with a brown and a green morph. The colour morphs occur in complete sympatry in mosaic habitats with rocky outcrops and Neptune grass patches. Morph‐specific differences had not been characterized yet and the evolutionary forces maintaining them remained unknown. With genome‐wide data for almost all Labrini species, we show that species with CPs are distributed across the phylogeny, but show evidence of hybridization. This suggests that the colour morphs are either ancient and have been lost repeatedly, that they have evolved repeatedly or have been shared via hybridization. Focusing on two polymorphic species, we find that each colour morph is more common in the microhabitat providing the best colour match and that the morphs exhibit additional behavioural and morphological differences further improving crypsis in their respective microhabitats. We find little evidence for genetic differentiation between the morphs in either species. Therefore, we propose that these colour morphs represent a multi‐niche polymorphism as an adaptation to the highly heterogeneous habitat. Our study highlights how colour polymorphism (CP) can be advantageous in mosaic habitats and that Mediterranean wrasses are an ideal system to study trans‐species polymorphisms, i.e. polymorphisms maintained across several species, in adaptive radiations.
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Affiliation(s)
- Sarya N Fark
- Institute of Ecology and Evolution, University of Bern, Bern, Switzerland
| | - Steve Gerber
- Institute of Ecology and Evolution, University of Bern, Bern, Switzerland
| | - Suzanne H Alonzo
- Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, California, USA
| | - Holly K Kindsvater
- Department of Fish and Wildlife Conservation, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
| | - Joana I Meier
- Institute of Ecology and Evolution, University of Bern, Bern, Switzerland.,Department of Zoology, University of Cambridge, Cambridge, UK.,Center of Ecology, Evolution & Biogeochemistry, Swiss Institute for Environmental Sciences and Technology (EAWAG), Kastanienbaum, Switzerland
| | - Ole Seehausen
- Institute of Ecology and Evolution, University of Bern, Bern, Switzerland.,Center of Ecology, Evolution & Biogeochemistry, Swiss Institute for Environmental Sciences and Technology (EAWAG), Kastanienbaum, Switzerland
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11
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Morph Composition Matters in the Gouldian Finch (Chloebia gouldiae): Involvement of Red-Headed Birds Increases Vigilance. BIRDS 2021. [DOI: 10.3390/birds2040030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Animals invest in costly vigilance to detect threats. Joining groups reduces these costs, which can be further reduced in mixed-species assemblages. In colour-polymorphic species, morphs often experience different predation pressure and vary in a variety of traits. However, little is known about differences in vigilance or how group composition affects vigilance. The aim was to investigate whether higher conspicuousness increased vigilance and whether vigilance was reduced in mixed-morph groups like in mixed-species assemblages. I tested vigilance in the colour-polymorphic Gouldian Finch (Chloebia gouldiae). Same sex pairs of different age and of either pure (red-red or black-black) or mixed head colour were exposed to three contexts (familiar, changed and novel environment) and head movements were recorded. All birds reduced the frequency of head movements with increasing novelty, indicating different vigilance strategies (switching from a searching to a tracking strategy) depending on the situation. While vigilance did not differ between morphs, morph composition mattered. Black-headed pairs made fewer head movements than mixed-head colour pairs. Results indicated that conspicuousness did not affect vigilance, possibly due to existing adaptations to reduce predation risk. However, whenever red-headed birds were involved, vigilance increased either because of higher group conspicuousness or prevalence of aggression.
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12
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Barnett JB, Michalis C, Scott-Samuel NE, Cuthill IC. Colour pattern variation forms local background matching camouflage in a leaf-mimicking toad. J Evol Biol 2021; 34:1531-1540. [PMID: 34465010 DOI: 10.1111/jeb.13923] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 08/17/2021] [Accepted: 08/26/2021] [Indexed: 12/26/2022]
Abstract
Optimal camouflage can, in principle, be relatively easily achieved in simple, homogeneous, environments where backgrounds always have the same colour, brightness and patterning. Natural environments are, however, rarely homogenous, and species often find themselves viewed against varied backgrounds where the task of concealment is more challenging. One result of variable backgrounds is the evolution of intraspecific phenotypic variation which may either be generalized, with multiple similarly cryptic patterns, or specialized, with each discrete colour form maximizing concealment against a single component of the background. We investigated the role of phenotypic variation in a highly variable population of the Neotropical toad Rhinella margaritifera using visual modelling and a computer-based detection task. We found that phenotypic variation was not divided into discrete colour morphs, and all toads were well camouflaged against the forest floor. However, although the whole population may appear to consist of random samples from the background, the toads were a particularly close match to the leaf litter, suggesting that they masquerade as dead leaves, which are themselves variable. Furthermore, rather than each colour form being equally effective against a single background, each toad was specialized towards its own particular local surroundings, as suggested by a specialist strategy. Taken together, these data highlight the importance of background matching to a nominally masquerading species, as well as how habitat heterogeneity at multiple spatial scales may affect the evolution of camouflage and phenotypic variation.
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Affiliation(s)
- James B Barnett
- School of Biological Sciences, University of Bristol, Bristol, UK.,Redpath Museum, McGill University, Montreal, QC, Canada.,Department of Psychology, Neuroscience, & Behaviour, McMaster University, Hamilton, ON, Canada
| | | | | | - Innes C Cuthill
- School of Biological Sciences, University of Bristol, Bristol, UK
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13
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Abad-Franch F, Monteiro FA, Pavan MG, Patterson JS, Bargues MD, Zuriaga MÁ, Aguilar M, Beard CB, Mas-Coma S, Miles MA. Under pressure: phenotypic divergence and convergence associated with microhabitat adaptations in Triatominae. Parasit Vectors 2021; 14:195. [PMID: 33832518 PMCID: PMC8034103 DOI: 10.1186/s13071-021-04647-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Accepted: 02/16/2021] [Indexed: 12/20/2022] Open
Abstract
Background Triatomine bugs, the vectors of Chagas disease, associate with vertebrate hosts in highly diverse ecotopes. It has been proposed that occupation of new microhabitats may trigger selection for distinct phenotypic variants in these blood-sucking bugs. Although understanding phenotypic variation is key to the study of adaptive evolution and central to phenotype-based taxonomy, the drivers of phenotypic change and diversity in triatomines remain poorly understood. Methods/results We combined a detailed phenotypic appraisal (including morphology and morphometrics) with mitochondrial cytb and nuclear ITS2 DNA sequence analyses to study Rhodnius ecuadoriensis populations from across the species’ range. We found three major, naked-eye phenotypic variants. Southern-Andean bugs primarily from vertebrate-nest microhabitats (Ecuador/Peru) are typical, light-colored, small bugs with short heads/wings. Northern-Andean bugs from wet-forest palms (Ecuador) are dark, large bugs with long heads/wings. Finally, northern-lowland bugs primarily from dry-forest palms (Ecuador) are light-colored and medium-sized. Wing and (size-free) head shapes are similar across Ecuadorian populations, regardless of habitat or phenotype, but distinct in Peruvian bugs. Bayesian phylogenetic and multispecies-coalescent DNA sequence analyses strongly suggest that Ecuadorian and Peruvian populations are two independently evolving lineages, with little within-lineage phylogeographic structuring or differentiation. Conclusions We report sharp naked-eye phenotypic divergence of genetically similar Ecuadorian R. ecuadoriensis (nest-dwelling southern-Andean vs palm-dwelling northern bugs; and palm-dwelling Andean vs lowland), and sharp naked-eye phenotypic similarity of typical, yet genetically distinct, southern-Andean bugs primarily from vertebrate-nest (but not palm) microhabitats. This remarkable phenotypic diversity within a single nominal species likely stems from microhabitat adaptations possibly involving predator-driven selection (yielding substrate-matching camouflage coloration) and a shift from palm-crown to vertebrate-nest microhabitats (yielding smaller bodies and shorter and stouter heads). These findings shed new light on the origins of phenotypic diversity in triatomines, warn against excess reliance on phenotype-based triatomine-bug taxonomy, and confirm the Triatominae as an informative model system for the study of phenotypic change under ecological pressure. ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13071-021-04647-z.
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Affiliation(s)
- Fernando Abad-Franch
- Núcleo de Medicina Tropical, Faculdade de Medicina, Universidade de Brasília, Brasília, Brazil. .,Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, UK.
| | - Fernando A Monteiro
- Laboratório de Epidemiologia e Sistemática Molecular, Instituto Oswaldo Cruz-Fiocruz, Rio de Janeiro, Brazil. .,Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, USA.
| | - Márcio G Pavan
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz-Fiocruz, Rio de Janeiro, Brazil
| | - James S Patterson
- Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, UK
| | - M Dolores Bargues
- Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Valencia, Spain
| | - M Ángeles Zuriaga
- Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Valencia, Spain
| | - Marcelo Aguilar
- Facultad de Ciencias Médicas, Universidad Central del Ecuador, Quito, Ecuador.,Instituto Juan César García, Quito, Ecuador
| | - Charles B Beard
- Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, USA
| | - Santiago Mas-Coma
- Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Valencia, Spain
| | - Michael A Miles
- Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, UK
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14
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Medina I, Kilner RM, Langmore NE. From micro- to macroevolution: brood parasitism as a driver of phenotypic diversity in birds. Curr Zool 2020; 66:515-526. [PMID: 33293930 PMCID: PMC7705515 DOI: 10.1093/cz/zoaa033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 06/17/2020] [Indexed: 11/14/2022] Open
Abstract
A fundamental question in biology is how diversity evolves and why some clades are more diverse than others. Phenotypic diversity has often been shown to result from morphological adaptation to different habitats. The role of behavioral interactions as a driver of broadscale phenotypic diversity has received comparatively less attention. Behavioral interactions, however, are a key agent of natural selection. Antagonistic behavioral interactions with predators or with parasites can have significant fitness consequences, and hence act as strong evolutionary forces on the phenotype of species, ultimately generating diversity between species of both victims and exploiters. Avian obligate brood parasites lay their eggs in the nests of other species, their hosts, and this behavioral interaction between hosts and parasites is often considered one of the best examples of coevolution in the natural world. In this review, we use the coevolution between brood parasites and their hosts to illustrate the potential of behavioral interactions to drive evolution of phenotypic diversity at different taxonomic scales. We provide a bridge between behavioral ecology and macroevolution by describing how this interaction has increased avian phenotypic diversity not only in the brood parasitic clades but also in their hosts.
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Affiliation(s)
- Iliana Medina
- School of BioSciences, University of Melbourne, Victoria, 3010, Australia
| | - Rebecca M Kilner
- Department of Zoology, University of Cambridge, Cambridge, CB2 3EJ, UK
| | - Naomi E Langmore
- Division of Ecology and Evolution, Australian National University, Canberra, ACT 2600, Australia
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15
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Angelier F. Pigeons in the sun: Thermal constraints of eumelanic plumage in the rock pigeon (Columba livia). J Therm Biol 2020; 90:102601. [PMID: 32479396 DOI: 10.1016/j.jtherbio.2020.102601] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 02/27/2020] [Accepted: 04/13/2020] [Indexed: 12/28/2022]
Abstract
In wild vertebrates, several species exhibit eumelanic color polymorphism with the coexistence of dark and light morphs. The maintenance of such polymorphism suggests the existence of a selective balance between the morphs and a large body of literature has reported the costs and benefits of darker plumage coloration in birds. Among them, it has been suggested that melanin and dark plumage could entail high energetic costs especially under hot and sunny climates. However, to my knowledge, the thermal constraints of sun exposure have rarely been studied in polymorphic species. Here, we tested the impact of eumelanic plumage coloration on plumage and body temperatures, and evaporative cooling behavior in the polymorphic rock pigeon (Columbia livia). We experimentally exposed light and dark pigeons to direct sun radiation for 1 h while a few birds were maintained in the shade as controls. We found that sun exposure was associated with increased plumage temperature, and this effect was greater for darker pigeons. In addition, we found that sun exposure was also associated with higher cloacal temperature but for dark pigeons only. Finally, light and dark pigeons were more likely to show cooling evaporative behavior when exposed to sun and as their cloacal temperature increases. Altogether, these results suggest that darker pigeons may have a lower ability to cope with heat and solar radiations and that dark plumage can be associated with thermal costs in this polymorphic species.
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Affiliation(s)
- Frédéric Angelier
- Centre d'Etudes Biologiques de Chizé, CNRS, La Rochelle Université, UMR, 7372, Villiers en Bois, France.
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16
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Talas L, Fennell JG, Kjernsmo K, Cuthill IC, Scott‐Samuel NE, Baddeley RJ. CamoGAN: Evolving optimum camouflage with Generative Adversarial Networks. Methods Ecol Evol 2019. [DOI: 10.1111/2041-210x.13334] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Laszlo Talas
- School of Psychological Science University of Bristol Bristol UK
| | - John G. Fennell
- School of Psychological Science University of Bristol Bristol UK
| | - Karin Kjernsmo
- School of Biological Sciences University of Bristol Bristol UK
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17
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Ge Y, Zhang L, Qin Z, Wang Y, Liu P, Tan S, Fu Z, Smith OM, Shi W. Different predation capacities and mechanisms of Harmonia axyridis (Coleoptera: Coccinellidae) on two morphotypes of pear psylla Cacopsylla chinensis (Hemiptera: Psyllidae). PLoS One 2019; 14:e0215834. [PMID: 31013311 PMCID: PMC6478344 DOI: 10.1371/journal.pone.0215834] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 04/09/2019] [Indexed: 02/05/2023] Open
Abstract
Pear psylla, Cacopsylla chinensis (Yang & Li) are present as two seasonal morphotypes in pear orchards where they, suck phloem sap, defoliate pear trees, and cause fruit russet. Despite the importance of natural enemies in psyllid control, the interactions between predators and the two seasonal morphotypes of psyllids remain poorly documented. Here we determined the predation efficiencies of the Asian lady beetle, Harmonia axyridis (Pallas) on the two psyllid morphotypes. Predation of H. axyridis on both morphotypes conformed to a Type II functional response: the proportion of consumed psyllids decreased with increasing prey densities. Predation efficiency of H. axyridis against the winterforms increased with temperature when measured from 8 to 25°C. Predation rate on the summerforms was significantly higher than that of the winterforms. This was linked to smaller body size, higher soluble protein level, thinner cuticle, and lower chitin content of summerform psyllids compared to winterform psyllids. Predation capacities of H. axyridis on both morphotypes indicated its potential as a biocontrol agent in psyllids management. Predation efficiency was higher on summerforms, likely due to the difference in body size, exoskeleton fragility, and nutritional value between the two morphotypes. Due to the Type II functional response of H. axyridis to both morphotypes of pear psylla, application of H. axyridis in pear orchards under suitable temperatures could be taken into consideration for suppression of C. chinensis, although further experiments conducted in field conditions are needed to validate our findings.
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Affiliation(s)
- Yang Ge
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, China
- Department of Entomology, Washington State University, Pullman, Washington, United States of America
| | - Liu Zhang
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, China
| | - Zifang Qin
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, China
| | - Yang Wang
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, China
| | - Pingping Liu
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, China
| | - Shuqian Tan
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, China
| | - Zhen Fu
- Department of Entomology, Washington State University, Pullman, Washington, United States of America
| | - Olivia M. Smith
- Department of Entomology, Washington State University, Pullman, Washington, United States of America
| | - Wangpeng Shi
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, China
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18
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Takahashi Y, Tanaka R, Yamamoto D, Noriyuki S, Kawata M. Balanced genetic diversity improves population fitness. Proc Biol Sci 2019; 285:rspb.2017.2045. [PMID: 29343595 DOI: 10.1098/rspb.2017.2045] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 12/18/2017] [Indexed: 11/12/2022] Open
Abstract
Although genetic diversity within a population is suggested to improve population-level fitness and productivity, the existence of these effects is controversial because empirical evidence for an ecological effect of genetic diversity and the underlying mechanisms is scarce and incomplete. Here, we show that the natural single-gene behavioural polymorphism (Rover and sitter) in Drosophila melanogaster has a positive effect on population fitness. Our simple numerical model predicted that the fitness of a polymorphic population would be higher than that expected with two monomorphic populations, but only under balancing selection. Moreover, this positive diversity effect of genetic polymorphism was attributable to a complementarity effect, rather than to a selection effect. Our empirical tests using the behavioural polymorphism in D. melanogaster clearly supported the model predictions. These results provide direct evidence for an ecological effect of genetic diversity on population fitness and its condition dependence.
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Affiliation(s)
- Yuma Takahashi
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Miyagi, Japan .,Graduate School of Life Sciences, Tohoku University, Miyagi, Japan
| | - Ryoya Tanaka
- Graduate School of Life Sciences, Tohoku University, Miyagi, Japan
| | - Daisuke Yamamoto
- Graduate School of Life Sciences, Tohoku University, Miyagi, Japan
| | - Suzuki Noriyuki
- Department of Environmental Science, Policy, and Management, University of California Berkeley, Berkeley, CA, USA.,Center for Geo-Environmental Science, Rissho University, Saitama, Japan
| | - Masakado Kawata
- Graduate School of Life Sciences, Tohoku University, Miyagi, Japan
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19
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Franzén M, Forsman A, Betzholtz P. Variable color patterns influence continental range size and species–area relationships on islands. Ecosphere 2019. [DOI: 10.1002/ecs2.2577] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- Markus Franzén
- Department of Biology and Environmental Science Center for Ecology and Evolution in Microbial Model Systems EEMiS Linnaeus University SE‐391 82 Kalmar Sweden
| | - Anders Forsman
- Department of Biology and Environmental Science Center for Ecology and Evolution in Microbial Model Systems EEMiS Linnaeus University SE‐391 82 Kalmar Sweden
| | - Per‐Eric Betzholtz
- Department of Biology and Environmental Science Linnaeus University SE‐391 82 Kalmar Sweden
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20
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Yıldırım Y, Tinnert J, Forsman A. Contrasting patterns of neutral and functional genetic diversity in stable and disturbed environments. Ecol Evol 2018; 8:12073-12089. [PMID: 30598801 PMCID: PMC6303714 DOI: 10.1002/ece3.4667] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 10/01/2018] [Accepted: 10/05/2018] [Indexed: 01/05/2023] Open
Abstract
Genetic structure among and diversity within natural populations is influenced by a combination of ecological and evolutionary processes. These processes can differently influence neutral and functional genetic diversity and also vary according to environmental settings. To investigate the roles of interacting processes as drivers of population-level genetic diversity in the wild, we compared neutral and functional structure and diversity between 20 Tetrix undulata pygmy grasshopper populations in disturbed and stable habitats. Genetic differentiation was evident among the different populations, but there was no genetic separation between stable and disturbed environments. The incidence of long-winged phenotypes was higher in disturbed habitats, indicating that these populations were recently established by flight-capable colonizers. Color morph diversity and dispersion of outlier genetic diversity, estimated using AFLP markers, were higher in disturbed than in stable environments, likely reflecting that color polymorphism and variation in other functionally important traits increase establishment success. Neutral genetic diversity estimated using AFLP markers was lower in disturbed habitats, indicating stronger eroding effects on neutral diversity of genetic drift associated with founding events in disturbed compared to stable habitats. Functional diversity and neutral diversity were negatively correlated across populations, highlighting the utility of outlier loci in genetics studies and reinforcing that estimates of genetic diversity based on neutral markers do not infer evolutionary potential and the ability of populations and species to cope with environmental change.
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Affiliation(s)
- Yeşerin Yıldırım
- Ecology and Evolution in Microbial Model SystemsEEMISDepartment of Biology and Environmental ScienceLinnaeus UniversityKalmarSweden
| | - Jon Tinnert
- Ecology and Evolution in Microbial Model SystemsEEMISDepartment of Biology and Environmental ScienceLinnaeus UniversityKalmarSweden
| | - Anders Forsman
- Ecology and Evolution in Microbial Model SystemsEEMISDepartment of Biology and Environmental ScienceLinnaeus UniversityKalmarSweden
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21
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Forsman A. On the role of sex differences for evolution in heterogeneous and changing fitness landscapes: insights from pygmy grasshoppers. Philos Trans R Soc Lond B Biol Sci 2018; 373:20170429. [PMID: 30150227 PMCID: PMC6125723 DOI: 10.1098/rstb.2017.0429] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/25/2018] [Indexed: 12/16/2022] Open
Abstract
Much research has been devoted to study evolution of local adaptations by natural selection, and to explore the roles of neutral processes and developmental plasticity for patterns of diversity among individuals, populations and species. Some aspects, such as evolution of adaptive variation in phenotypic traits in stable environments, and the role of plasticity in predictable changing environments, are well understood. Other aspects, such as the role of sex differences for evolution in spatially heterogeneous and temporally changing environments and dynamic fitness landscapes, remain elusive. An increased understanding of evolution requires that sex differences in development, physiology, morphology, life-history and behaviours are more broadly considered. Studies of selection should take into consideration that the relationships linking phenotypes to fitness may vary not only according to environmental conditions but also differ between males and females. Such opposing selection, sex-by-environment interaction effects of selection and sex-specific developmental plasticity can have consequences for population differentiation, local adaptations and for the dynamics of polymorphisms. Integrating sex differences in analytical frameworks and population comparisons can therefore illuminate neglected evolutionary drivers and reconcile unexpected patterns. Here, I illustrate these issues using empirical examples from over 20 years of research on colour polymorphic Tetrix subulata and Tetrix undulata pygmy grasshoppers, and summarize findings from observational field studies, manipulation experiments, common garden breeding experiments and population genetics studies.This article is part of the theme issue 'Linking local adaptation with the evolution of sex differences'.
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Affiliation(s)
- Anders Forsman
- Ecology and Evolution in Microbial Model Systems, EEMiS, Department of Biology and Environmental Science, Linnaeus University, 391 82 Kalmar, Sweden
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22
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Troscianko J, Skelhorn J, Stevens M. Camouflage strategies interfere differently with observer search images. Proc Biol Sci 2018; 285:20181386. [PMID: 30185636 PMCID: PMC6158535 DOI: 10.1098/rspb.2018.1386] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 08/13/2018] [Indexed: 11/24/2022] Open
Abstract
Numerous animals rely on camouflage for defence. Substantial past work has identified the presence of multiple strategies for concealment, and tested the mechanisms underpinning how they work. These include background matching, D-RUP coloration to destroy target edges, and distractive markings that may divert attention from key target features. Despite considerable progress, work has focused on how camouflage types prevent initial detection by naive observers. However, predators will often encounter multiple targets over time, providing the opportunity to learn or focus attention through search images. At present, we know almost nothing about how camouflage types facilitate or hinder predator performance over repeated encounters. Here, we use experiments with human subjects searching for targets on touch screens with different camouflage strategies, and control the experience that subjects have with target types. We show that different camouflage strategies affect how subjects improve in detecting targets with repeated encounters, and how performance in detection of one camouflage type depends on experience of other strategies. In particular, disruptive coloration is effective at preventing improvements in camouflage breaking during search image formation, and experience with one camouflage type (distraction) can decrease the ability of subjects to switch to and from search images for new camouflage types (disruption). Our study is, to our knowledge, the first to show how the success of camouflage strategies depends on how they prevent initial and successive detection, and on predator experience of other strategies. This has implications for the evolution of prey phenotypes, how we assess the efficacy of defences, and predator-prey dynamics.
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Affiliation(s)
- Jolyon Troscianko
- Centre for Ecology and Conservation, College of Life and Environmental Sciences, University of Exeter, Penryn Campus, Penryn, Cornwall TR10 9FE, UK
| | - John Skelhorn
- Centre for Behaviour and Evolution, Institute of Neuroscience, Newcastle University, Henry Wellcome Building, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - Martin Stevens
- Centre for Ecology and Conservation, College of Life and Environmental Sciences, University of Exeter, Penryn Campus, Penryn, Cornwall TR10 9FE, UK
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23
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Size variability effects on visual detection are influenced by colour pattern and perceived size. Anim Behav 2018. [DOI: 10.1016/j.anbehav.2018.07.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Phenotype-dependent mate choice and the influence of mixed-morph lineage on the reproductive success of a polymorphic and aposematic moth. Evol Ecol 2018. [DOI: 10.1007/s10682-018-9944-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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25
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Angelier F, Parenteau C, Trouvé C, Angelier N. The behavioural and physiological stress responses are linked to plumage coloration in the rock pigeon (Columbia livia). Physiol Behav 2018; 184:261-267. [DOI: 10.1016/j.physbeh.2017.12.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 11/24/2017] [Accepted: 12/08/2017] [Indexed: 01/15/2023]
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26
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Variation in defensive chemistry within a polyphagous Baikal population of Chrysomela lapponica (Coleoptera: Chrysomelidae): potential benefits in a multi-enemy world. POPUL ECOL 2017. [DOI: 10.1007/s10144-017-0601-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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27
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Franks DW, Oxford GS. The co-evolution of anti-predator polymorphisms in sympatric populations. Biol J Linn Soc Lond 2017. [DOI: 10.1093/biolinnean/blx111] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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28
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Gutiérrez-Valencia J, Gutiérrez Y, G. Dias L. Species delimitation in the crypsis-defended and polymorphic stick insects of the genusLibethra(Phasmatodea, Diapheromeridae). ZOOL SCR 2017. [DOI: 10.1111/zsc.12242] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Juanita Gutiérrez-Valencia
- Erasmus Mundus Master Programme in Evolutionary Biology (MEME); University of Groningen; 9747 AG Groningen the Netherlands
| | - Yeisson Gutiérrez
- Institute of Landscape Ecology; Universtiy of Münster; 48149 Münster Germany
| | - Lucimar G. Dias
- Faculty of Exact and Natural Sciences; Bionat Research Group; University of Caldas; Street 65, No. 26-10 A.A. 275 Manizales Colombia
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29
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Forsman A, Betzholtz PE, Franzén M. Faster poleward range shifts in moths with more variable colour patterns. Sci Rep 2016; 6:36265. [PMID: 27808116 PMCID: PMC5093557 DOI: 10.1038/srep36265] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 10/11/2016] [Indexed: 02/06/2023] Open
Abstract
Range shifts have been documented in many organisms, and climate change has been implicated as a contributing driver of latitudinal and altitudinal range modifications. However, little is known about what species trait(s) allow for faster environmental tracking and improved capacity for distribution expansions. We used data for 416 species of moths, and show that range limits in Sweden have shifted to the north by on average 52.4 km per decade between 1973 and 2014. When also including non-expanding species, average expansion rate was 23.2 km per decade. The rate of boundary shifts increased with increasing levels of inter-individual variation in colour patterns and decreased with increasing latitude. The association with colour patterns indicate that variation in this functionally important trait enables species to cope with novel and changing conditions. Northern range limits also increased with average abundance and decreased with increasing year-to-year abundance fluctuations, implicating production of dispersers as a driver of range dynamics. Studies of terrestrial animals show that rates of poleward shifts differ between taxonomic groups, increase over time, and depend on study duration and latitude. Knowledge of how distribution shifts change with time, location, and species characteristics may improve projections of responses to climate change and aid the protection of biodiversity.
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Affiliation(s)
- Anders Forsman
- Center for Ecology and Evolution in Microbial Model Systems, EEMiS, Department of Biology and Environmental Science, Linnaeus University, SE-391 82 Kalmar, Sweden
| | - Per-Eric Betzholtz
- Department of Biology and Environmental Science, Linnaeus University, SE-391 82 Kalmar, Sweden
| | - Markus Franzén
- Department of Community Ecology, UFZ, Helmholtz Centre for Environmental Research, Halle, Germany
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30
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Busso JP, Davis Rabosky AR. Disruptive selection on male reproductive polymorphism in a jumping spider, Maevia inclemens. Anim Behav 2016. [DOI: 10.1016/j.anbehav.2016.07.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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31
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Betzholtz PE, Franzén M, Forsman A. Colour pattern variation can inform about extinction risk in moths. Anim Conserv 2016. [DOI: 10.1111/acv.12287] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- P.-E. Betzholtz
- Faculty of Health and Life Sciences; Department of Biology and Environmental Science; Linnaeus University; Kalmar Sweden
| | - M. Franzén
- Department of Community Ecology; UFZ; Helmholtz Centre for Environmental Research; Halle Germany
| | - A. Forsman
- Center for Ecology and Evolution in Microbial Model Systems; EEMiS; Department of Biology and Environmental Science; Linnaeus University; Kalmar Sweden
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32
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Forsman A. Is colour polymorphism advantageous to populations and species? Mol Ecol 2016; 25:2693-8. [DOI: 10.1111/mec.13629] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 10/01/2015] [Accepted: 10/22/2015] [Indexed: 12/19/2022]
Affiliation(s)
- Anders Forsman
- Department of Biology and Environmental Science; Ecology and Evolution in Microbial Model Systems, EEMIS; Linnaeus University; SE-391 82 Kalmar Sweden
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