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Sperm morphology in two house mouse subspecies: Do wild-derived strains and wild mice tell the same story?

SYSNO ASEP	0441851
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Sperm morphology in two house mouse subspecies: Do wild-derived strains and wild mice tell the same story?
Author(s)	Albrechtová, Jana (UBO-W)_SAI Albrecht, Tomáš (UBO-W)_{RID, SAI, ORCID} Ďureje, Ľudovít (UBO-W)_{RID, SAI, SAI} Pallazola, V. A. (US) Piálek, Jaroslav (UBO-W)_{RID, ORCID, SAI}
Number of authors	5
Source Title	PLoS ONE. - : Public Library of Science - ISSN 1932-6203 Roč. 9, č. 12 (2014), e115669
Number of pages	15 s.
Language	eng - English
Country	US - United States
Keywords	Mus musculus musculus ; hybrid zone ; multiple paternity ; Passerine birds ; Swimming velocity ; Central Europe ; Competition ; Speciation ; Common ; Size
Subject RIV	EG - Zoology
R&D Projects	GA206/08/0640 GA ČR - Czech Science Foundation (CSF)
Institutional support	UBO-W - RVO:68081766
UT WOS	000347239900068
EID SCOPUS	84919934318
DOI	10.1371/journal.pone.0115669
Annotation	Being subject to intense post-copulatory selection, sperm size is a principal determining component of male fitness. Although previous studies have presented comparative sperm size data at higher taxonomic levels, information on the evolution of sperm size within species is generally lacking. Here, we studied two house mouse subspecies, Mus musculus musculus and Mus musculus domesticus, which undergo incipient speciation. We measured four sperm dimensions from cauda epididymis smears of 28 wild-caught mice of both subspecies. As inbred mouse strains are frequently used as proxies for exploring evolutionary processes, we further studied four wild-derived inbred strains from each subspecies. The subspecies differed significantly in terms of sperm head length and midpiece length, and these differences were consistent for wild mice and wild-derived strains pooled over genomes. When the inbred strains were analyzed individually, however, their strain-specific values were in some cases significantly shifted from subspecies-specific values derived from wild mice. We conclude that: (1) the size of sperm components differ in the two house mouse subspecies studied, and that (2) wild-derived strains reflect this natural polymorphism, serving as a potential tool to identify the genetic variation driving these evolutionary processes. Nevertheless, we suggest that more strains should be used in future experiments to account for natural variation and to avoid confounding results due to reduced variability and/or founder effect in the individual strains.
Workplace	Institute of Vertebrate Biology
Contact	Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524
Year of Publishing	2015

Number of the records: 1