Počet záznamů: 1
Avian predation mediates size-specific survival in a Neotropical annual fish: a field experiment
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SYSNO ASEP 0489136 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Avian predation mediates size-specific survival in a Neotropical annual fish: a field experiment Tvůrce(i) Reichard, Martin (UBO-W) RID, ORCID, SAI, SAI
Lanés, L. E. K. (BR)
Polačik, Matej (UBO-W) RID, SAI, ORCID
Blažek, Radim (UBO-W) RID, ORCID, SAI
Vrtílek, Milan (UBO-W) RID, ORCID, SAI
Godoy, R. S. (BR)
Maltchik, L. (BR)Celkový počet autorů 7 Zdroj.dok. Biological Journal of the Linnean Society. - : Oxford University Press - ISSN 0024-4066
Roč. 124, č. 1 (2018), s. 56-66Poč.str. 12 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova density-dependent growth ; evo-demo ; fish-eating birds ; killifish ; life history evolution ; mortality Vědní obor RIV EG - Zoologie Obor OECD Biology (theoretical, mathematical, thermal, cryobiology, biological rhythm), Evolutionary biology CEP GBP505/12/G112 GA ČR - Grantová agentura ČR Institucionální podpora UBO-W - RVO:68081766 UT WOS 000434109900007 DOI 10.1093/biolinnean/bly022 Anotace Predation and population density have fundamental size- and sex-specific effects on individual survival and demographic parameters. Given the overlap and interactions between different age cohorts in natural populations, separating the factors related to differential survival and growth based on longitudinal field-collected data is problematic. Using a Neotropical annual fish (Austrolebias minuano) with a single age cohort per generation, we used replicated field enclosures to experimentally test the roles of avian predation and fish population density on survival and growth over adult lifespan. We found that mortality risk was higher in larger males and smaller females when predation was experimentally excluded. Exposure to avian predation eliminated this sex-specific effect of body size on survival. No overall sex difference in survival was found in the experiment, despite a female-biased sex ratio in natural populations. Individually based growth rates were highest in enclosures at low population density with no predation risk. Overall, we demonstrate that annual fish suffer high sex-dependent size-specific mortality that is more strongly related to predation than to density-dependent processes. This has important implications for our understanding of the evolution of senescence and other life history traits in annual fishes. Pracoviště Ústav biologie obratlovců Kontakt Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524 Rok sběru 2019
Počet záznamů: 1