Unusual allometry for sexual size dimorphism in a cichlid where males are extremely larger than females
@article{Ota2010UnusualAF, title={Unusual allometry for sexual size dimorphism in a cichlid where males are extremely larger than females}, author={Kazutaka Ota and Masanori Kohda and Tetsu Sato}, journal={Journal of Biosciences}, year={2010}, volume={35}, pages={257-265} }
When males are the larger sex, a positive allometric relationship between male and female sizes is often found across populations of a single species (i.e. Rensch’s rule). This pattern is typically explained by a sexual selection pressure on males. Here, we report that the allometric relationship was negative across populations of a shell-brooding cichlid fish Lamprologus callipterus, although males are extremely larger than females. Male L. callipterus collect and defend empty snail shells in…
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References
SHOWING 1-10 OF 56 REFERENCES
SEXUAL SELECTION AND THE EVOLUTION OF ALLOMETRY FOR SEXUAL SIZE DIMORPHISM IN THE WATER STRIDER
- Biology, Environmental Science
- 1994
These results provide the first quantitative evidence that allometry for SSD may evolve in response to sexual selection favoring large males, even in taxa in which females are the larger sex.
The influence of sexual selection and ecological constraints on an extreme sexual size dimorphism in a cichlid
- Environmental Science, BiologyAnimal Behaviour
- 2005
Sexual Selection and the Evolution of Allometry for Sexual Size Dimorphism in the Water Strider, Aquarius remigis
- Biology, Environmental ScienceThe American Naturalist
- 1994
The results provide the first quantitative evidence that allometry for SSD may evolve in response to sexual selection favoring large males, even in taxa in which females are the larger sex.
Allometry for Sexual Size Dimorphism: Pattern and Process in the Coevolution of Body Size in Males and Females
- Biology, Environmental Science
- 1997
Sexual size dimorphism (SSD) is common in both plants and animals, and current evidence suggests that it reflects the adaptation of males and females to their different reproductive roles. When…
Sexual selection explains sex-specific growth plasticity and positive allometry for sexual size dimorphism in a reef fish
- BiologyProceedings of the Royal Society B: Biological Sciences
- 2009
It is shown that in the sex-changing fish Parapercis cylindrica, larger males have larger harems with larger females, and that SSD increases with harem size, suggesting that sexual selection for male body size is the ultimate cause of sexual size allometry.
An optimality approach to male and female body sizes in an extremely size-dimorphic cichlid fish
- Environmental Science, Biology
- 2006
Intersexual selection can explain male body size, but fecundity selection alone cannot explain female size, and the breeding substrate strongly constrains female size.
POPULATION VARIATION IN SEXUAL SELECTION AND ITS EFFECT ON SIZE ALLOMETRY IN TWO DUNG FLY SPECIES WITH CONTRASTING SEXUAL SIZE DIMORPHISM
- Biology, Environmental ScienceEvolution; international journal of organic evolution
- 2002
Variation in the intensity of sexual and fecundity selection, male and female body size, and thus SSD among 31 and 27 populations of the two dung fly species, Scathophaga stercoraria and Sepsis cynipsea, across Switzerland is document.
Allometry for Sexual Size Dimorphism: Testing Two Hypotheses for Rensch’s Rule in the Water Strider Aquarius remigis
- BiologyThe American Naturalist
- 2005
The results support a novel interpretation of the differential‐plasticity hypothesis: that the traits most closely associated with reproductive fitness are “adaptively canalized” among populations of the water strider Aquarius remigis.
Giant males or dwarf females : what determines the extreme sexual size dimorphism in Lamprologus callipterus?
- Biology, Environmental Science
- 2000
It seems unlikely that L. callipterus descended from small shell-brooding cichlids which used shells for shelter, but more likely that the ancestors were of large or intermediate size, and that female size is constrained by the sizes of snail shells, which appear to be optimal breeding substrata.
Sexual selection explains Rensch's rule of size dimorphism in shorebirds.
- BiologyProceedings of the National Academy of Sciences of the United States of America
- 2004
Sexual size dimorphism shows a remarkably widespread relationship to body size in the animal kingdom: within lineages, it decreases with size when females are the larger sex, but it increases with…