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Reproductive compensation in broad-nosed pipefish females
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Animal Ecology.
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2010 (English)In: Proceedings of the Royal Society of London. Biological Sciences, ISSN 0962-8452, E-ISSN 1471-2954, Vol. 277, no 1687, 1581-1587 p.Article in journal (Refereed) Published
Abstract [en]

The differential allocation hypothesis assumes that animals should weigh costs and benefits of investing into reproduction with a current mate against the expected quality of future mates, and predicts that they should invest more into reproduction when pairing with a high-quality mate. In the broad-nosed pipefish (Syngnathus typhle), males care for the embryos in a brood pouch and females compete for access to male mating partners. Both sexes prefer mating with large partners. In the present study, we show that the same female provides both large and small mating partners with eggs of similar size, weight and lipid content when mated to two males in succession. Importantly, however, eggs provided to small males (less preferred) had higher egg protein content (11% more) than those provided to large males (preferred). Thus, contrary to the differential allocation hypothesis, eggs did not contain more resources when females mated with a larger male. Instead, the pattern observed in our results is consistent with a compensatory reproductive strategy.

Place, publisher, year, edition, pages
2010. Vol. 277, no 1687, 1581-1587 p.
Keyword [en]
Syngnathidae, sex-role reversal, paternal care, female choice, maternal effects, reproductive compensation
National Category
Biological Sciences
URN: urn:nbn:se:uu:diva-137004DOI: 10.1098/rspb.2009.2290ISI: 000276528500016OAI: oai:DiVA.org:uu-137004DiVA: diva2:377780
Available from: 2010-12-14 Created: 2010-12-14 Last updated: 2014-11-14Bibliographically approved

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Ahnesjö, Ingrid
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Animal Ecology
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