NDLI: Copulatory behaviour of the bank voleMyodes glareolus: matings with one and two males do not make a difference

Content Provider	Springer Nature Link
Author	Borkowska, Anetta
Copyright Year	2010
Abstract	In promiscuous species in which females mate with more than one male during oestrus, males may increase their sperm expenditure or change their copulatory behaviour in response to the risk of sperm competition. I used an experimental approach to investigate the pattern of copulatory behaviour of the bank voleMyodes glareolus Schreber, 1780 depending on whether the female mated with one or two males. The work showed that the copulatory period of the bank vole lasted about 80 minutes and consisted of 4–5 ejaculatory series, with multiple intromissions preceding ejaculation. There were no significant changes in number of intromissions across the first four ejaculatory series, but I did find a relationship between number of intromissions and first ejaculation latency; also, ejaculation latencies grew shorter as the ejaculatory series proceeded. Litter size did not differ significantly between females that mated with one male and those mating with two, nor did the reproductive success of males that mated with the same female. Mating with an oestrus female appears to be advantageous for bank vole males even if they mate as the second one, and the risk of sperm competition did not trigger changes in male copulatory behaviour. The similar durations of the copulatory period and patterns of change of ejaculation latencies during copulations with one and two males point to the role of the female in temporal copulatory behaviour of the bank vole.
Starting Page	343
Ending Page	349
Page Count	7
File Format	PDF
ISSN	00017051
Journal	Acta Theriologica
Volume Number	55
Issue Number	4
e-ISSN	21903743
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-01-01
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	copulatory behaviour bank vole multiple mating allozymes Zoology Animal Physiology Behavioural Sciences Animal Ecology Evolutionary Biology Animal Anatomy Morphology Histology
Content Type	Text
Resource Type	Article
Subject	Animal Science and Zoology Ecology, Evolution, Behavior and Systematics

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