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Condition and reproductive investment in the western mosquitofish (Gambusia affinis) : little evidence for condition-dependent sex-biased investment

Senior, Alistair M.; Lim, Jiahui N.; Adolfsson, Sofia LU ; Lamatsch, Dunja K. and Nakagawa, Shinichi (2016) In Biological Journal of the Linnean Society 119(2). p.430-435
Abstract

In sexually reproducing species, resources may theoretically be distributed with bias to the production of male or female offspring in response to the condition of the mother, commonly recognized as sex allocation. Using a recently characterized sex-specific molecular marker, we tested for maternal sex allocation (i.e. maternal primary sex ratio bias and sex-specific offspring investment) in captive laboratory-bred western mosquitofish (Gambusia affinis) at early stages of offspring development. We found no statistical evidence to support sex allocation in G. affinis, based on maternal condition. In addition, we found little evidence for correlations between maternal condition and investment in the condition (mass) of individual... (More)

In sexually reproducing species, resources may theoretically be distributed with bias to the production of male or female offspring in response to the condition of the mother, commonly recognized as sex allocation. Using a recently characterized sex-specific molecular marker, we tested for maternal sex allocation (i.e. maternal primary sex ratio bias and sex-specific offspring investment) in captive laboratory-bred western mosquitofish (Gambusia affinis) at early stages of offspring development. We found no statistical evidence to support sex allocation in G. affinis, based on maternal condition. In addition, we found little evidence for correlations between maternal condition and investment in the condition (mass) of individual offspring (of one sex or the other), although we did find that larger mothers tended to have higher fecundity.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
fecundity, life-history trade-off, maternal condition, maternal investment, offspring size, Poeciliid, reproductive correlations, sex allocation, sex ratio, Trivers–Willard
in
Biological Journal of the Linnean Society
volume
119
issue
2
pages
6 pages
publisher
Linnean Society of London
external identifiers
  • scopus:84988622188
  • wos:000386919000014
ISSN
0024-4066
DOI
10.1111/bij.12813
language
English
LU publication?
yes
id
a2d34dc8-6052-4468-93d4-1a818b054843
date added to LUP
2016-10-26 07:25:24
date last changed
2017-04-28 13:20:53
@article{a2d34dc8-6052-4468-93d4-1a818b054843,
  abstract     = {<p>In sexually reproducing species, resources may theoretically be distributed with bias to the production of male or female offspring in response to the condition of the mother, commonly recognized as sex allocation. Using a recently characterized sex-specific molecular marker, we tested for maternal sex allocation (i.e. maternal primary sex ratio bias and sex-specific offspring investment) in captive laboratory-bred western mosquitofish (Gambusia affinis) at early stages of offspring development. We found no statistical evidence to support sex allocation in G. affinis, based on maternal condition. In addition, we found little evidence for correlations between maternal condition and investment in the condition (mass) of individual offspring (of one sex or the other), although we did find that larger mothers tended to have higher fecundity.</p>},
  author       = {Senior, Alistair M. and Lim, Jiahui N. and Adolfsson, Sofia and Lamatsch, Dunja K. and Nakagawa, Shinichi},
  issn         = {0024-4066},
  keyword      = {fecundity,life-history trade-off,maternal condition,maternal investment,offspring size,Poeciliid,reproductive correlations,sex allocation,sex ratio,Trivers–Willard},
  language     = {eng},
  month        = {10},
  number       = {2},
  pages        = {430--435},
  publisher    = {Linnean Society of London},
  series       = {Biological Journal of the Linnean Society},
  title        = {Condition and reproductive investment in the western mosquitofish (Gambusia affinis) : little evidence for condition-dependent sex-biased investment},
  url          = {http://dx.doi.org/10.1111/bij.12813},
  volume       = {119},
  year         = {2016},
}