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Sex-dependent increase of movement activity in the freshwater isopod Asellus aquaticus following adaptation to a predator-free cave habitat
Populations experiencing negligible predation pressure are expected to evolve higher behavioral activity. However, when sexes have different expected benefits from high activity, the adaptive shift is expected to be sex-specific. Here, we compared movement activity of one cave (lack of predation) an...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10443615/ https://www.ncbi.nlm.nih.gov/pubmed/37614916 http://dx.doi.org/10.1093/cz/zoac063 |
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author | Berisha, Hajriz Horváth, Gergely Fišer, Žiga Balázs, Gergely Fišer, Cene Herczeg, Gábor |
author_facet | Berisha, Hajriz Horváth, Gergely Fišer, Žiga Balázs, Gergely Fišer, Cene Herczeg, Gábor |
author_sort | Berisha, Hajriz |
collection | PubMed |
description | Populations experiencing negligible predation pressure are expected to evolve higher behavioral activity. However, when sexes have different expected benefits from high activity, the adaptive shift is expected to be sex-specific. Here, we compared movement activity of one cave (lack of predation) and three adjacent surface (high and diverse predation) populations of Asellus aquaticus, a freshwater isopod known for its independent colonization of several caves across Europe. We predicted 1) higher activity in cave than in surface populations, with 2) the difference being more pronounced in males as they are known for active mate searching behavior, while females are not. Activity was assessed both in the presence and absence of light. Our results supported both predictions: movement activity was higher in the cave than in the surface populations, particularly in males. Relaxed predation pressure in the cave-adapted population is most likely the main selective factor behind increased behavioral activity, but we also showed that the extent of increase is sex-specific. |
format | Online Article Text |
id | pubmed-10443615 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-104436152023-08-23 Sex-dependent increase of movement activity in the freshwater isopod Asellus aquaticus following adaptation to a predator-free cave habitat Berisha, Hajriz Horváth, Gergely Fišer, Žiga Balázs, Gergely Fišer, Cene Herczeg, Gábor Curr Zool Original Articles Populations experiencing negligible predation pressure are expected to evolve higher behavioral activity. However, when sexes have different expected benefits from high activity, the adaptive shift is expected to be sex-specific. Here, we compared movement activity of one cave (lack of predation) and three adjacent surface (high and diverse predation) populations of Asellus aquaticus, a freshwater isopod known for its independent colonization of several caves across Europe. We predicted 1) higher activity in cave than in surface populations, with 2) the difference being more pronounced in males as they are known for active mate searching behavior, while females are not. Activity was assessed both in the presence and absence of light. Our results supported both predictions: movement activity was higher in the cave than in the surface populations, particularly in males. Relaxed predation pressure in the cave-adapted population is most likely the main selective factor behind increased behavioral activity, but we also showed that the extent of increase is sex-specific. Oxford University Press 2022-08-09 /pmc/articles/PMC10443615/ /pubmed/37614916 http://dx.doi.org/10.1093/cz/zoac063 Text en © The Author(s) 2022. Published by Oxford University Press on behalf of Editorial Office, Current Zoology. https://creativecommons.org/licenses/by-nc/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial License (https://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com |
spellingShingle | Original Articles Berisha, Hajriz Horváth, Gergely Fišer, Žiga Balázs, Gergely Fišer, Cene Herczeg, Gábor Sex-dependent increase of movement activity in the freshwater isopod Asellus aquaticus following adaptation to a predator-free cave habitat |
title | Sex-dependent increase of movement activity in the freshwater isopod Asellus aquaticus following adaptation to a predator-free cave habitat |
title_full | Sex-dependent increase of movement activity in the freshwater isopod Asellus aquaticus following adaptation to a predator-free cave habitat |
title_fullStr | Sex-dependent increase of movement activity in the freshwater isopod Asellus aquaticus following adaptation to a predator-free cave habitat |
title_full_unstemmed | Sex-dependent increase of movement activity in the freshwater isopod Asellus aquaticus following adaptation to a predator-free cave habitat |
title_short | Sex-dependent increase of movement activity in the freshwater isopod Asellus aquaticus following adaptation to a predator-free cave habitat |
title_sort | sex-dependent increase of movement activity in the freshwater isopod asellus aquaticus following adaptation to a predator-free cave habitat |
topic | Original Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10443615/ https://www.ncbi.nlm.nih.gov/pubmed/37614916 http://dx.doi.org/10.1093/cz/zoac063 |
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