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Sexual size dimorphism and ecomorphology of the Berthold’s bush anole (Polychrus gutturosus) in Costa Rica: Preliminary data
(2019)
Sexual size dimorphism (SSD) is the result of sexual or natural selection operating differently on the body
sizes of females and males. Males of most lizard species are larger than females, suggesting intrasexual selection
on ...
Contrasting patterns of sexual size dimorphism in the grasshoppers Dichroplus vittatus and D. pratensis (Acrididae, Melanoplinae)
(Orthopterists' Society, 2008-12)
Sexual size dimorphism (SSD) can be the result of sexual selection (SS) or natural selection (NS). Due to male-male competition for access to females, SS could favor an increase in male body size. On the other hand, larger ...
Size-Dependent Selective Mechanisms on Males and Females and the Evolution of Sexual Size Dimorphism in Frogs
(Univ Chicago Press, 2014-12-01)
Sexual size dimorphism (SSD) varies in animals from male biased to female biased. The evolution of SSD is potentially influenced by a number of factors, such as territoriality, fecundity, and temporal breeding patterns ...
Territoriality and male-biased sexual size dimorphism in Argia reclusa (Odonata: Zygoptera)
(SPRINGER HEIDELBERGHEIDELBERG, 2012)
In Odonata, many species present sexual size dimorphism (SSD), which can be associated with male territoriality in Zygoptera. We hypothesized that in the territorial damselfly Argia reclusa, male-male competition can favor ...
Allometry for Sexual Size Dimorphism in Stoneflies Defies the Rensch's Rule
(Entomological Soc Brasil, 2014-04-01)
The Rensch's rule predicts that male-biased sexual size dimorphism (SSD) increases with body size, while female-biased SSD (FBSSD) decreases. In insects, many groups follow this rule, but the evidence suggests that it is ...
Egg-laying site, fecundity and degree of sexual size dimorphism in frogs
(Oxford Univ Press, 2020-11-01)
Female fecundity is an important selective force leading to female-biased sexual size dimorphism (SSD) in frogs. Because anurans exhibit diverse reproductive modes, we investigated whether variation in SSD and fecundity ...
Rensch's rule is not verifiedin melanopline grasshoppers (Acrididae)
(Insect Biodiversity Research Group, 2013-12)
Sexual size dimorphism (SSD) is almost universal in animals. Rensch?s rule proposes that SSD increases with increasing average body size in taxa where males are larger than females (male- biased SSD; MBSSD) and decreases ...
Macroevolution of sexual size dimorphism and reproduction-related phenotypic traits in lizards of the Chaco Domain
(BioMed Central, 2018-12-07)
Comparing sexual size dimorphism (SSD) in the light of the phylogenetic hypothesis may help to understand the phenotypic evolution associated with sexual selection (size of whole body and of reproduction-related body parts). ...
Male-male competition and repeated evolution of terrestrial breeding in Atlantic Coastal Forest frogs*
(2020-02-01)
Terrestrial breeding is a derived condition in frogs, with multiple transitions from an aquatic ancestor. Shifts in reproductive mode often involve changes in habitat use, and these are typically associated with diversification ...
Sexual size dimorphism and testis size allometry in tuco-tucos (Rodentia: Ctenomyidae)
(Walter de Gruyter & Co, 2013-02)
We studied sexual size dimorphism (SSD) and testes size allometry in 97 natural populations, including 39 nominal species and 19 unnamed or undescribed forms, of tuco-tucos ( Ctenomys ) from Argentina, Bolivia, Chile, ...