Scallop size does not predict amount or rate of induced sperm release

Styan, Craig and Butler, Alan J. 2003, Scallop size does not predict amount or rate of induced sperm release, Marine and freshwater behaviour and physiology, vol. 36, no. 2, pp. 59-65, doi: 10.1080/1023624031000092322.

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Title Scallop size does not predict amount or rate of induced sperm release
Author(s) Styan, Craig
Butler, Alan J.
Journal name Marine and freshwater behaviour and physiology
Volume number 36
Issue number 2
Start page 59
End page 65
Publisher Taylor & Francis
Place of publication Amsterdam
Publication date 2003-06
ISSN 1023-6244
Keyword(s) fertilization
sperm spawning
Summary Within populations of broadcast spawning marine invertebrates such as scallops, larger animals typically have larger gonads. Presumably, this means those larger males have more sperm to release than small males. However, there has never been a direct test of whether larger males actually release more sperm, at a higher rate, during spawning. To address this, we compared the allometry of induced sperm release with that of reproductive investment (gonad weight) in ripe males of 2 species of scallops, Chlamys bifrons and Chlamys asperrima. We did not find that larger scallops released more sperm or released it faster than small scallops, and were able to reject the hypothesis that instantaneous sperm release was related to body size in the same way as gonad weight. Consequently, we speculate that if larger broadcast spawning males do release more sperm, they may do so by spawning on more occasions within a reproductive season.
Notes Online Publication Date: 01 June 2003
Language eng
DOI 10.1080/1023624031000092322
Field of Research 060803 Animal Developmental and Reproductive Biology
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2003, Taylor & Francis
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