Genital morphology linked to social status in the bank vole (Myodes glareolus)

Lemaitre J-F, Ramm SA, Jennings N, Stockley P (2012)
Behavioral Ecology and Sociobiology 66(1): 97-105.

Zeitschriftenaufsatz | Veröffentlicht| Englisch
 
Download
Es wurde kein Volltext hochgeladen. Nur Publikationsnachweis!
Autor/in
Lemaitre, Jean-Francois; Ramm, Steven A.UniBi ; Jennings, Nicola; Stockley, Paula
Abstract / Bemerkung
Since genital morphology can influence the outcome of post-copulatory sexual selection, differences in the genitalia of dominant and subordinate males could be a factor contributing to the fertilisation advantage of dominant males under sperm competition. Here we investigate for the first time if penile morphology differs according to male social status in a promiscuous mammal, the bank vole (Myodes glareolus). In this species, dominant males typically achieve higher reproductive success than subordinates in post-copulatory sexual selection, and male genital morphology is complex, including both a baculum (os penis) and penile spines. Our results show that despite no difference in body size associated with male social status, baculum width is significantly larger in dominant male bank voles than in subordinates. We also found evidence of positive allometry and a relatively high coefficient of phenotypic variation in the baculum width of male bank voles, consistent with an influence of sexual selection. By contrast, baculum length and three measures of penile spinosity did not differ according to male social status or show evidence of positive allometry. We conclude that dominant male bank voles may benefit from an enlarged baculum under sperm competition and/or cryptic female choice and that differences in penile morphology according to male social status might be important but as yet largely unexplored source of variation in male reproductive success.
Stichworte
Social; Sexual selection; Penile spines; Genitalia; Allometry; Baculum; dominance; Sperm competition
Erscheinungsjahr
2012
Zeitschriftentitel
Behavioral Ecology and Sociobiology
Band
66
Ausgabe
1
Seite(n)
97-105
ISSN
0340-5443
eISSN
1432-0762
Page URI
https://pub.uni-bielefeld.de/record/2491843

Zitieren

Lemaitre J-F, Ramm SA, Jennings N, Stockley P. Genital morphology linked to social status in the bank vole (Myodes glareolus). Behavioral Ecology and Sociobiology. 2012;66(1):97-105.
Lemaitre, J. - F., Ramm, S. A., Jennings, N., & Stockley, P. (2012). Genital morphology linked to social status in the bank vole (Myodes glareolus). Behavioral Ecology and Sociobiology, 66(1), 97-105. doi:10.1007/s00265-011-1257-4
Lemaitre, J. - F., Ramm, S. A., Jennings, N., and Stockley, P. (2012). Genital morphology linked to social status in the bank vole (Myodes glareolus). Behavioral Ecology and Sociobiology 66, 97-105.
Lemaitre, J.-F., et al., 2012. Genital morphology linked to social status in the bank vole (Myodes glareolus). Behavioral Ecology and Sociobiology, 66(1), p 97-105.
J.-F. Lemaitre, et al., “Genital morphology linked to social status in the bank vole (Myodes glareolus)”, Behavioral Ecology and Sociobiology, vol. 66, 2012, pp. 97-105.
Lemaitre, J.-F., Ramm, S.A., Jennings, N., Stockley, P.: Genital morphology linked to social status in the bank vole (Myodes glareolus). Behavioral Ecology and Sociobiology. 66, 97-105 (2012).
Lemaitre, Jean-Francois, Ramm, Steven A., Jennings, Nicola, and Stockley, Paula. “Genital morphology linked to social status in the bank vole (Myodes glareolus)”. Behavioral Ecology and Sociobiology 66.1 (2012): 97-105.