Effects of resource distribution on sexual selection and the cost of reproduction in sandgobies

The American Naturalist
K Lindström

Abstract

I describe the results of an experimental manipulation of resource availability (nest substrate) and distribution (nest size), leading to effects on the opportunity for sexual selection and the survival of male sandgobies Pomatoschistus minutus competing for these resources. This study represents one of few such experimental manipulations. It shows a clear-cut effect of male-male competition on the survival of males, and it shows temporal variation in the opportunity for sexual selection, suggesting that short-term assessment of sexual selection could be misleading. Males breeding under male-male competition for nest sites lived on average 18 d less than males in the high-nest-availability treatment. This considerable cost of reproduction probably stems from increased stress levels as a result of higher levels of aggression. The opportunity for sexual selection was high throughout the 2-mo experiment in the low-nest-availability treatment, while in the high nest availability, it changed in a complex manner over the season. In the latter case, sexual selection was initially low but increased during midseason to values nearly as high as in the nest-site-limited environment and then decreased again toward the end of the season. Pr...Continue Reading

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Citations

Dec 4, 2003·Journal of Theoretical Biology·Hiroshi Hakoyama, Yoh Iwasa
Jan 9, 2003·Mutation Research·Claus O Wilke, Christoph Adami
Jun 4, 2004·Nature·Elisabet ForsgrenJens Bjelvenmark
Jan 9, 2009·Proceedings. Biological Sciences·Sébastien DescampsJean-Michel Gaillard
Aug 21, 2012·PloS One·P Andreas SvenssonBob B M Wong
May 24, 2012·The American Naturalist·Lise Cats MyhreTrond Amundsen
Apr 5, 2011·The American Naturalist·Laura K WeirJeffrey A Hutchings
Jun 16, 2010·Ecology Letters·Hope KlugHanna Kokko
Nov 8, 2018·Current Zoology·Trond Amundsen, UNKNOWN Handling editor: Ingo Schlupp
Nov 8, 2018·Current Zoology·Katja Heubel, UNKNOWN Handling editor: Ingo Schlupp
Aug 21, 2013·The Journal of Experimental Biology·M Clara P AmorimPaulo J Fonseca

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