Results 21 to 30 of about 29,197 (258)

SEXUAL SIZE DIMORPHISM OF THE MUSK DUCK

open access: yesThe Wilson Bulletin, 2000
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
McCracken, K., Paton, D., Afton, A.
openaire   +3 more sources

Sexual size and shape dimorphism in Salamandra salamandra (Amphibia, Caudata, Salamandridae) from the central Balkans [PDF]

open access: yesArchives of Biological Sciences, 2013
Sexual size dimorphism is one of the key evolutionary features that has been studied in many organisms. On the other hand, sexual shape dimorphism has not been examined as well despite being as important as size dimorphism.
Labus N.   +2 more
doaj   +1 more source

Sexual dimorphism in the South American water snake Helicops polylepis (Serpentes: Dipsadidae)

open access: yesPhyllomedusa: Journal of Herpetology, 2021
Sexual selection, fecundity selection and ecological divergence have been the main explanations proposed for the origin and maintenance of sexual dimorphism.
Isla Carol Marialva Camargo   +5 more
doaj  

Subtle sexual plumage color dimorphism and size dimorphism in a South American colonial breeder, the Monk Parakeet (Myiopsitta monachus)

open access: yesAvian Research, 2020
Background Parrots (Psittacidae Family) are one of the most colorful groups of birds in the world, their colors produced both structurally and via unusual pigments (psittacofulvins). Most species are considered to be monogamous, and many have been viewed
Macarena Morales   +3 more
doaj   +1 more source

Can foraging ecology drive the evolution of body size in a diving endotherm? [PDF]

open access: yesPLoS ONE, 2013
Within a single animal species, different morphs can allow for differential exploitation of foraging niches between populations, while sexual size dimorphism can provide each sex with access to different resources.
Timothée R Cook   +4 more
doaj   +1 more source

Filling the gaps in ecology of tropical tiger beetles (Coleoptera: Cicindelidae): first quantitative data of sexual dimorphism in semi-arboreal Therates from the Philippine biodiversity hotspot [PDF]

open access: yesPeerJ
Background Sexual dimorphism, driven by sexual selection, leads to varied morphological distinctions in male and female insects, providing insights into selection pressures across species. However, research on the morphometric variability within specific
Dale Ann Acal   +2 more
doaj   +2 more sources

Sexual size dimorphism and sexual selection in artiodactyls [PDF]

open access: yesBehavioral Ecology, 2020
AbstractSexual size dimorphism is biased toward males in most mammalian species. The most common explanation is precopulatory intramale sexual selection. Large males win fights and mate more frequently. In artiodactyls, previous tests of this hypothesis consisted of interspecific correlations of sexual dimorphism with group size as a surrogate for the ...
openaire   +2 more sources

Shared allometric trajectories but contrasting sexual size dimorphism in Osmoderma barnabita and Rosalia alpina from the Eastern Carpathians, Romania [PDF]

open access: yesBulletin of Insectology
Sexual size dimorphism and morphometric variation provide valuable insights into population ecology, habitat quality, and evolutionary processes in insects.
Marian D. Mirea   +4 more
doaj   +3 more sources

Geometric morphometrics reveals sex-differential shape allometry in a spider [PDF]

open access: yesPeerJ, 2017
Common scientific wisdom assumes that spider sexual dimorphism (SD) mostly results from sexual selection operating on males. However, testing predictions from this hypothesis, particularly male size hyperallometry, has been restricted by methodological ...
Carmen Fernández-Montraveta   +1 more
doaj   +2 more sources

The dilemma of choosing a reference character for measuring sexual size dimorphism, sexual body component dimorphism, and character scaling: cryptic dimorphism and allometry in the scorpion Hadrurus arizonensis. [PDF]

open access: yesPLoS ONE, 2015
Sexual differences in morphology, ranging from subtle to extravagant, occur commonly in many animal species. These differences can encompass overall body size (sexual size dimorphism, SSD) or the size and/or shape of specific body parts (sexual body ...
Gerad A Fox   +2 more
doaj   +1 more source

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