Počet záznamů: 1
Variation in apical hook length reflects the intensity of sperm competition in murine rodents
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SYSNO ASEP 0394025 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Variation in apical hook length reflects the intensity of sperm competition in murine rodents Tvůrce(i) Šandera, M. (CZ)
Albrecht, Tomáš (UBO-W) RID, SAI, ORCID
Stopka, P. (CZ)Celkový počet autorů 3 Zdroj.dok. PLoS ONE. - : Public Library of Science - ISSN 1932-6203
Roč. 8, č. 7 (2013), e68427Poč.str. 5 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova postcopulatory sexual selection ; field mice Apodemus ; female promiscuity ; acrosome reaction ; Passerine birds ; Muroid rodents ; genus Apodemus ; cytochrome-b ; testes size ; house mice Vědní obor RIV EG - Zoologie Institucionální podpora UBO-W - RVO:68081766 UT WOS 000321733000004 EID SCOPUS 84879753962 DOI 10.1371/journal.pone.0068427 Anotace Background: Post-copulatory sexual selection has been shown to shape morphology of male gametes. Both directional and stabilizing selection on sperm phenotype have been documented in vertebrates in response to sexual promiscuity. Methodology: Here we investigated the degree of variance in apical hook length and tail length in six taxa of murine rodents. Conclusions: Tail sperm length and apical hook length were positively associated with relative testis mass, our proxy for levels of sperm competition, thus indicating directional post-copulatory selection on sperm phenotypes. Moreover, our study shows that increased levels of sperm competition lead to the reduction of variance in the hook length, indicating stabilizing selection. Hence, the higher risk of sperm competition affects increasing hook length together with decreasing variance in the hook length. Species-specific post-copulatory sexual selection likely optimizes sperm morphology. Pracoviště Ústav biologie obratlovců Kontakt Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524 Rok sběru 2014
Počet záznamů: 1