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Parallel morphological evolution and habitat-dependent sexual dimorphism in cave- vs. surface populations of the Asellus aquaticus (Crustacea: Isopoda: Asellidae) species complex [Elektronski vir]Balázs, Gergely ...Studying parallel evolution (repeated, independent evolution of similar phenotypes in similar environments) is a powerful tool to understand environment-dependent se%lective forces. Surface-dwelling ... species that repeatedly and independently colonized caves provide unique models for such studies. The primarily surface-dwelling Asellus aquaticus species complex is a good candidate to carry out such research, because it colonized several caves in Europe. By comparing 17 functional morphological traits between six cave and nine surface populations of the A. aquaticus species complex, we investigated population divergence in morphology and sexual dimorphism. We found habitat-dependent population divergence in 10 out of 17 traits, likely reflect%ing habitat-driven changes in selection acting on sensory systems, feeding, grooming, and antipredator mechanisms. Sexual dimorphism was present in 15 traits, explained by sexual selection acting on male traits important in male%male agonistic behavior or mate guarding and fecundity selection acting on female traits affecting offspring number and nursing. In eight traits, the degree of sexual dimorphism was habitat de%pendent. We conclude that cave-related morphological changes are highly trait- and function-specific and that the strength of sexual/fecundity selection strongly dif%fers between cave and surface habitats. The considerable population variation within habitat type warrants further studies to reveal cave-specific adaptations besides the parallel patterns.Source: Ecology and evolution [Elektronski vir]. - ISSN 2045-7758 (Vol. 11, iss. 21, 2021, str. 15389-15403)Type of material - e-article ; adult, seriousPublish date - 2021Language - englishCOBISS.SI-ID - 85534211
Author
Balázs, Gergely |
Bíró, Anna |
Fišer, Žiga, biolog |
Fišer, Cene |
Herczeg, Gábor
Topics
postranice |
trofični nivoji |
sobivanje |
evolucija |
kolonizacija |
adaptacija
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Balázs, Gergely | ![]() |
Bíró, Anna | ![]() |
Fišer, Žiga, biolog | 35368 |
Fišer, Cene | 18913 |
Herczeg, Gábor | ![]() |
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