Intraspecific Sexual Size and Shape Dimorphism in an Australian Freshwater Fish Differs with Respect to a Biogeographic Barrier and Latitude

  title={Intraspecific Sexual Size and Shape Dimorphism in an Australian Freshwater Fish Differs with Respect to a Biogeographic Barrier and Latitude},
  author={Clint D. Kelly and Kaila E. Folinsbee and Dean C. Adams and Michael D. Jennions},
  journal={Evolutionary Biology},
Geographically structured variation in morphology is a common phenomenon in animals with environmental factors covarying with both latitude and biogeographic barriers having profound impacts on body size and shape. The Pacific blue-eye (Pseudomugil signifer) is a freshwater fish that lives along Australia’s east coast and occurs on either side of a terrestrial barrier, the Burdekin Gap. By quantifying the size and shape of males and females from 10 populations we found that Pacific blue-eyes… 
Latitudinal Influence on the Sexual Dimorphism of the Marine Fish Bathygobius soporator (Gobiidae: Teleostei)
A complex and particularized scenario of biotic and abiotic interactions acting on local populations of B. soporator in extensive coastal areas of the Western Atlantic is suggested, with profound implications for species evolution.
Reciprocal sexual size dimorphism and Rensch’s rule in Toad-headed lizards (Phrynocephalus vlangalii)
The findings suggest that the underlying evolutionary forces cannot promote the direction of SSD consistent with Rensch’s rule in both male-biased and female-biased SSD across populations within a species.
Pattern of sexual size dimorphism supports the inverse of Rensch’s rule in two frog species
The results suggest that females living in adverse climates in high altitudes cannot adjust their body size as plastically as males.
Latitudinal variation and coevolutionary diversification of sexually dimorphic traits in the false blister beetle Oedemera sexualis
Hind leg sizes and shapes, as measured by principal component analysis of these four hind leg dimensions in each sex, covaried significantly between sexes, suggesting coevolutionary diversification in sexual traits.
Interannual variability of body size and beak morphology of the squid Ommastrephes bartramii in the North Pacific Ocean in the context of climate change
The shapes of upper and lower beaks showed significant differences between small-scale climatic patterns in which El Nino or La Nina event occurred, displaying different growth patterns.
Evaluation of stock variation and sexual dimorphism of beak shape of neon flying squid, Ommastrephes bartramii, based on geometric morphometrics
Geometric morphometrics of upper and lower beak’s shape are used to analyze the variation between sexes and stocks in Ommastrephes bartramii of the northwestern Pacific Ocean, and Squid stocks could be effectively identified based on the results of a principal component analysis of beak shape, but sexes could not be identified with this technique.
Weapon allometry varies with latitude in the New Zealand giraffe weevil
To the authors' knowledge, this is the first study to document a latitudinal cline in weapon allometry for the New Zealand giraffe weevil and is therefore a novel contribution to the collective work on Bergmann's rule and secondary sexual trait variation.
Andrew meets Rensch: sexual size dimorphism and the inverse of Rensch’s rule in Andrew’s toad (Bufo andrewsi)
It is suggested that the strong fecundity selection favouring large females drives the evolution of female-biased SSD in B. andrewsi, providing an explanation for the inverse of Rensch’s rule.
Examining Head-shape Differences and Ecology in Morphologically Similar Salamanders at Their Zone of Contact
It is found that P. ventralis and P. websteri differed in head shape, in general, and that head shape differed among populations within species, and the importance of including population variation in the context of character displacement and competition is reiterated.


Variation in body size and sexual dimorphism across geographical and environmental space in the frogs Limnodynastes tasmaniensis and L. peronii
Geographical variations in sexual selection via male-male physical competition and climate-related resources are suggested as potential explanations for SSD variation in L. peronii.
The patterns of body shape dimorphism in 15 species of Greater Antillean Anolis lizards are investigated and it is concluded that adaptive patterns differ for the sexes and that interspecific ecological variation is related more strongly to shape than to size for each sex.
Life–history variation and allometry for sexual size dimorphism in Pacific salmon and trout
  • K. Young
  • Environmental Science
    Proceedings of the Royal Society B: Biological Sciences
  • 2005
Body length and life–history data from 628 populations of seven species of anadromous Pacific salmon and trout are used to show that in this genus life-history variation appears to regulate patterns of allometry both within and between species.
Allometry for Sexual Size Dimorphism: Pattern and Process in the Coevolution of Body Size in Males and Females
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
Plasticity in sexual size dimorphism and Rensch's rule in Mediterranean blennies (Blenniidae)
This study compares SSD among closely related populations of three species of Mediterranean blennies (Blenniidae) and demonstrates the fine scale on which evolutionary processes re- sponsible for Rensch's rule may be operating.
Sexual Selection and the Evolution of Allometry for Sexual Size Dimorphism in the Water Strider, Aquarius remigis
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.
Sexual dimorphism and adaptive radiation in Anolis lizards
It is shown that sexual differences contribute substantially to the ecomorphological diversity produced by the adaptive radiations of West Indian Anolis lizards: within anole species, males and females occupy mostly non-overlapping parts of morphological space; the overall extent of sexual variation is large relative to interspecific variation; and the degree of variation depends on ecological type.
Sexual selection explains Rensch's rule of size dimorphism in shorebirds.
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
Sexual size dimorphism within species increases with body size in insects
Sexual differences in size were shown to increase with increasing body size in species with female-biased SSD, underlines the need to consider intraspecific variation in SSD in comparative studies and suggests that environmental conditions may strongly affect the degree, though not the direction of SSD within species.
This work uses published studies of sex-specific latitudinal body size clines in vertebrates and invertebrates to investigate patterns equivalent to Rensch's rule among populations within species and to evaluate their possible relation to Bergmann's rule.