Sperm size evolution in African greenbuls (Passeriformes: Pycnonotidae)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F16%3A00447549" target="_blank" >RIV/68081766:_____/16:00447549 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/16:10325398

Result on the web

<a href="http://dx.doi.org/10.1111/bij.12663" target="_blank" >http://dx.doi.org/10.1111/bij.12663</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/bij.12663" target="_blank" >10.1111/bij.12663</a>

Result language

angličtina

Original language name

Sperm size evolution in African greenbuls (Passeriformes: Pycnonotidae)

Original language description

Sperm morphology is highly diversified across the animal kingdom and recent comparative evidence from passerine birds suggests that postcopulatory sexual selection is a significant driver of sperm evolution. In the present study, we describe sperm size variation among 20 species of African greenbuls and one bulbul (Passeriformes: Pycnonotidae) and analyze the evolutionary differentiation of sperm size within a phylogenetic framework. We found significant interspecific variation in sperm size; with some genera exhibiting relatively long sperm (e.g. Eurillas) and others exhibiting short sperm head lengths (e.g. Phyllastrephus). However, our results suggest that contemporary levels of sperm competition are unlikely to explain sperm diversification within this clade: the coefficients of inter-male variation (CVbm) in sperm length were generally high, suggesting relatively low and homogeneous rates of extra-pair paternity. Finally, in a comparison of six evolutionary or tree transformation models, we found support for both the Kappa (evolutionary change primarily at nodes) and Lambda (lineage-specific evolutionary rates along branches) models in the evolutionary trajectories of sperm size among species. We therefore conclude that African greenbuls have more variable rates of sperm size evolution than expected from a neutral model of genetic drift. Understanding the evolutionary dynamics of sperm diversification remains a future challenge.

Czech name

—

Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EG - Zoology

OECD FORD branch

—

Project

<a href="/en/project/GB14-36098G" target="_blank" >GB14-36098G: Center for tropical biology</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Biological Journal of the Linnean Society

ISSN

0024-4066

e-ISSN

—

Volume of the periodical

117

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

337-349

UT code for WoS article

000370158900013

EID of the result in the Scopus database

2-s2.0-84954362673