Molecular population divergence and sexual selection on morphology in the banded demoiselle (Calopteryx splendens)

Svensson, Erik I.; Kristoffersen, Lina; Oskarsson, K.; Bensch, Staffan

doi:10.1038/sj.hdy.6800519

Cited by 85 publications

(172 citation statements)

References 73 publications

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“…Finally, gene flow estimates of C. splendens populations in southern Sweden are pronounced, suggesting that populations are highly interconnected , which may contribute to the low differentiation in ecology. Consistent with high gene flow are the low to moderate F ST values of this species (Svensson et al 2004: F ST = 0.05; Chaput-Bardy et al…”

Section: Evidence For Adaptive Ecological Niche Diversificationmentioning

confidence: 61%

Non-adaptive radiation in damselflies

Wellenreuther¹

2016

2016 International Congress of Entomology

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Adaptive radiations have long served as living libraries to study the build-up of species richness; however, they do not provide good models for radiations that exhibit negligible adaptive disparity. Here, we review work on damselflies to argue that nonadaptive mechanisms were predominant in the radiation of this group and have driven species divergence through sexual selection arising from male-female mating interactions. Three damselfly genera (Calopteryx, Enallagma and Ischnura) are highlighted and the extent of (i) adaptive ecological divergence in niche use and (ii) nonadaptive differentiation in characters associated with reproduction (e.g. sexual morphology and behaviours) was evaluated. We demonstrate that species diversification in the genus Calopteryx is caused by nonadaptive divergence in coloration and behaviour affecting premating isolation, and structural differentiation in reproductive morphology affecting postmating isolation. Similarly, the vast majority of diversification events in the sister genera Enallagma and Ischnura are entirely driven by differentiation in genital structures used in species recognition. The finding that closely related species can show negligible ecological differences yet are completely reproductively isolated suggests that the evolution of reproductive isolation can be uncoupled from niche-based divergent natural selection, challenging traditional niche models of species coexistence.

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Section: Evidence For Adaptive Ecological Niche Diversificationmentioning

confidence: 61%

Non-adaptive radiation in damselflies

Wellenreuther¹

2016

2016 International Congress of Entomology

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“…Possibly, both sexes are coevolving at the level of genital form and function and this coevolution takes place within each population. If this is true, this means that post-copulatory sexual selection is promoting species divergence (for a similar rationale but for wing pigmentation see Svensson et al 2004). The evidence is still scarce but some experiments in C. h. asturica have provided support to this.…”

Section: Copulatory Processesmentioning

confidence: 99%

Evolution and ecology of Calopterygidae (Zygoptera: Odonata): status of knowledge and research perspectives

Córdoba-Aguilar¹,

Cordero‐Rivera²

2005

Neotrop. Entomol.

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Evolução e Ecologia de Calopterygidae (Zygoptera: Odonata): Conhecimento Atual e Perspectivas de Pesquisa RESUMO -Neste artigo revisamos estudos sobre evolução e ecologia da família Calopterygidae. Os adultos são reconhecidos pelas asas pigmentadas e comportamento territorial. Três gêneros têm sido bem estudados: Hetaerina, Calopteryx e Mnais. As larvas desenvolvem-se em ambientes aquáticos e a seleção opera principalmente nesse período, resultando em indivíduos de grande massa muscular. Os adultos levam alguns dias para se tornarem sexualmente maduros e durante esse período alimentam-se extensivamente acumulando as reservas de gordura que consumirão para voar e produzir ovos. Entretanto, gregarinas parasitas podem consumir essas reservas. Os machos utilizam duas estratégias de acasalamento que podem ser determinadas geneticamente (Mnais) ou ambientalmente (Calopteryx e Hetaerina): territorialidade e não-territorialidade. No gênero Mnais as estratégias comportamentais parecem ser balanceadas de acordo com sua adaptabilidade ao longo do tempo. Os machos deCalopteryx, Mnais e Phaon realizam corte pré-cópula, comportamento ausente em Hetaerina. A pigmentação das asas dos machos parece sinalizar às fêmeas, durante a corte, algum nível de resistência imunológica a parasitas. Durante a cópula os machos retiram o esperma armazenado em cópulas anteriores pelas fêmeas. Há grande variação na habilidade e nos tipos de mecanismos para a retirada do esperma, assim como na morfologia genital de ambos sexos. Tal variação pode resultar de co-evolução entre os sexos direcionada a controlar o esperma armazenado. Após a cópula os machos defendem as fêmeas evitando que elas copulem com outros machos. Nessa revisão sugerimos aspectos a serem estudados nessa família. PALAVRAS-CHAVE: Reserva de gordura, pigmentação alar, capacidade imune, coevolução de genitália ABSTRACT -We review the studies of evolution and ecology in the Calopterygidae. Adults are easily distinguished for their pigmented wings and territorial behaviour. Three genera have been well studied: Hetaerina, Calopteryx and Mnais. Larvae develop in riverine aquatic environments. Selection operates at this stage to produce large muscle mass for adults. The adult spends some days until sexually ready. During this time, it feeds extensively to produce muscle fat for egg production and fl ight. However, gregarine parasites may ingest the fat reserves. Males may use two mating tactics or strategies that may be genetically (Mnais) or environmentally (Calopteryx andHetaerina) determined: territoriality and nonterritoriality. In Mnais, these strategies appear balanced in fi tness terms. Males of Calopteryx, Mnais and Phaon show a precopulatory courtship that is not the case for Hetaerina. Male wing pigmentation seems to signal how good the male is to deal immunologically with parasites to females during the male courtship. During copulation, males displace the sperm the female has stored in the storage organs from previous matings. There is an enormous variation in male sperm disp...

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“…Arlequin does not GENETIC STRUCTURE OF SOUTHERN FLOUNDER account for dominant marker systems, so the calculated fixation indices for AFLP data are based on peak phenotype (presence/absence) frequencies rather than allele frequencies. Despite this, Arlequin is often used for analysis of AFLPs (Svensson et al 2004;Bensch and A kesson 2005;Timmermans et al 2005;Parchman et al 2006;Toews and Irwin 2008); the degree of differentiation and their significance values are meaningful, but direct comparisons with F ST values from co-dominant data sets should be avoided.…”

Section: Methodsmentioning

confidence: 99%

Population Genetic Structure of Southern Flounder Inferred from Multilocus DNA Profiles

2015

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Determination of stock structure is an important component of fisheries management; incorporation of molecular genetic data is an effective method for assessing differentiation among putative populations. We examined genetic variation in Southern Flounder Paralichthys lethostigma within and between the U.S. South Atlantic and Gulf of Mexico basins to improve our understanding of the scale of population structure in this wide‐ranging species. Analysis of amplified fragment length polymorphism (AFLP) fingerprints and analysis of mitochondrial DNA (mtDNA) control region sequences found clear divergence between ocean basins. Based on mtDNA sequences, no genetic differentiation was detected within the U.S. South Atlantic at spatial scales that were broad (among states: North Carolina, South Carolina, Georgia, and Florida) or fine (among estuarine regions within North Carolina). Increased genetic resolution was observed with AFLP fingerprint data, and we found significant subdivision between nearly all Southern Flounder geographic populations, suggesting the presence of finer‐scale genetic population structure within the U.S. South Atlantic. However, AFLP genetic cluster analysis also revealed evidence for a high degree of mixing within the Atlantic basin; patterns of variation, which included genetic similarity between South Carolina and Gulf of Mexico samples, were not aligned closely with geography. We examined the partitioning of genetic variation among groups by using analyses of molecular variance and found no evidence that North Carolina Southern Flounder, which are managed on the state level as a unit stock, are differentiated from the remainder of U.S. South Atlantic Southern Flounder. Our findings indicate only weak structure and the potential for basinwide mixing among Atlantic Southern Flounder, suggesting that cooperation among U.S. South Atlantic states will be essential for the effective assessment of stock dynamics and future management plans.

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Molecular population divergence and sexual selection on morphology in the banded demoiselle (Calopteryx splendens)

Cited by 85 publications

References 73 publications

Non-adaptive radiation in damselflies

Non-adaptive radiation in damselflies

Evolution and ecology of Calopterygidae (Zygoptera: Odonata): status of knowledge and research perspectives

Population Genetic Structure of Southern Flounder Inferred from Multilocus DNA Profiles

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