Male reproductive competition in spawning aggregations of cod (Gadus morhua, L.)

Molecular Ecology
D BekkevoldV Loeschcke

Abstract

Reproductive competition may lead to a large skew in reproductive success among individuals. Very few studies have analysed the paternity contribution of individual males in spawning aggregations of fish species with huge census population sizes. We quantified the variance in male reproductive success in spawning aggregations of cod under experimental conditions over an entire spawning season. Male reproductive success was estimated by microsatellite-based parentage analysis of offspring produced in six separate groups of spawning cod. In total, 1340 offspring and 102 spawnings distributed across a spawning season were analysed. Our results show that multiple males contributed sperm to most spawnings but that paternity frequencies were highly skewed among males, with larger males on average siring higher proportions of offspring. It was further indicated that male reproductive success was dependent on the magnitude of the size difference between a female and a male. We discuss our results in relation to the cod mating system. Finally, we suggest that the highly skewed distribution of paternity success observed in cod may be a factor contributing to the low effective population size/census population size ratios observed in many...Continue Reading

References

Mar 10, 1993·JAMA : the Journal of the American Medical Association·L Crawley
Jun 20, 1998·Molecular Ecology·T C MarshallJ M Pemberton
Mar 27, 2001·Evolution; International Journal of Organic Evolution·G H PogsonR G Boutilier
May 26, 2001·Proceedings. Biological Sciences·P FuM R Gross
Jun 9, 2001·The Journal of Heredity·J A DeWoody, J C Avise
Sep 21, 2001·Nature·E E NielsenP Grønkjaer
May 1, 1997·The American Naturalist·P StockleyA P Møller
Jun 1, 1998·Trends in Ecology & Evolution·M Taborsky
Oct 1, 1993·Evolution; International Journal of Organic Evolution·Leonard Nunney
Jan 1, 1989·Evolution; International Journal of Organic Evolution·William R Rice
Dec 1, 1995·Evolution; International Journal of Organic Evolution·Michel Raymond, François Rousset
Oct 1, 1997·Evolution; International Journal of Organic Evolution·Stephen R PalumbiNicholas Tachino

❮ Previous
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Citations

Dec 26, 2009·Fish Physiology and Biochemistry·Luis E C ConceiçãoJorge Dias
Sep 17, 2004·Nature·David R VieitesAxel Meyer
Oct 17, 2003·Proceedings. Biological Sciences·William F HutchinsonGary R Carvalho
Oct 23, 2002·Evolution; International Journal of Organic Evolution·Sylvain CharlatHervé Merçot
Jan 27, 2005·Journal of Evolutionary Biology·G RudolfsenE Søreng
Dec 14, 2012·PloS One·Timothy B GrabowskiGuđrún Marteinsdóttir
May 16, 2009·General and Comparative Endocrinology·Geir Lasse TarangerTom Hansen
Sep 13, 2005·Evolution; International Journal of Organic Evolution·Philip Hedrick
Jul 27, 2007·Molecular Ecology·Sheri L Johnson, Philip O Yund
Nov 14, 2002·Annual Review of Genetics·John C AviseJ Andrew DeWoody
Jul 13, 2016·General and Comparative Endocrinology·Mohammad Abdul Momin SiddiqueIan Anthony Ernest Butts
Nov 10, 2009·Advances in Marine Biology·Nova MieszkowskaDavid W Sims
Oct 8, 2016·Journal of Fish Biology·R S Waples
Mar 3, 2004·Journal of Morphology·Thomas E HallIan A Johnston
Jan 12, 2019·Molecular Ecology·Julia M I BarthSissel Jentoft
Oct 13, 2006·Genome Génome / Conseil National De Recherches Canada·Z Y ZhuG H Yue
Nov 18, 2017·The Journal of Experimental Biology·Ragnhild ValenJon Vidar Helvik
Dec 5, 2019·The Journal of the Acoustical Society of America·Anthony D Hawkins, Marta Picciulin
Feb 19, 2019·Transactions of the American Fisheries Society·Megan J OsborneThomas F Turner

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