Results 21 to 30 of about 125,407 (302)

SEXUAL SIZE DIMORPHISM IN STONE MARTEN (MARTES FOINA, ERXL. 1777) FROM SARNENA SREDNA GORA MTS (BULGARIA) [PDF]

open access: yesTrakia Journal of Sciences, 2019
Sexual dimorphism in body size measurements of 65 stone martens was investigated in winter periods (10.12.- 01.03) 2013 to 2017. There was found sexual dimorphism in body size of Stone Marten from Central Bulgaria: males were larger than females.
S. Peeva
doaj   +1 more source

Sexual Dimorphism in Homo erectus Inferred from 1.5 Ma Footprints Near Ileret, Kenya [PDF]

open access: yes, 2019
Sexual dimorphism can be one of the most important indicators of social behavior in fossil species, but the effects of time averaging, geographic variation, and differential preservation can complicate attempts to determine this measure from preserved ...
Hatala, Kevin G.   +2 more
core   +2 more sources

MORPHOLOGY, REPRODUCTION, SEASONAL ACTIVITY AND HABITAT USE OF A NORTHERN POPULATION OF THE SMOOTH GREENSNAKE (OPHEODRYS VERNALIS) [PDF]

open access: yes, 2020
The Smooth Greensnake (Opheodrys vernalis) is a small, slender, oviparous, colubrid snake that is widely distributed in North America. Nonetheless, there have been few studies on this species, and little is known about Canadian populations. The objective
Cairns, Nicholas A.   +1 more
core   +2 more sources

Understanding the evolution of ecological sex differences: Integrating character displacement and the Darwin‐Bateman paradigm

open access: yesEvolution Letters, 2019
Sex differences in selection arise for at least two possible reasons: (1) differences originating from anisogamy—the Darwin‐Bateman paradigm—and (2) competition‐driven ecological character displacement (ECD), agnostic of anisogamy.
Stephen P. De Lisle
doaj   +1 more source

Dimorphism in quaternary scelidotheriinae (mammalia, xenarthra, phyllophaga) [PDF]

open access: yes, 2015
The contributions concerning possible cases of sexual dimorphisms in fossil and living sloths are scarce. Until now, studies in fossil ground sloth sexual dimorphism have been limited to the subfamilies Megatheriinae (Eremotherium) and Mylodontinae ...
Miño Boilini, Ángel Ramón   +1 more
core   +1 more source

Sexual Dimorphism

open access: yesAnnual Review of Anthropology, 1985
doi:10.1146/annurev.an.14.100185.002241 ; Annual Review of Anthropology http://arjournals.annualreviews.org/loi ...
Frayer, David W., Wolpoff, Milford H.
openaire   +3 more sources

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

Sex-biased parental care and sexual size dimorphism in a provisioning arthropod [PDF]

open access: yes, 2015
The diverse selection pressures driving the evolution of sexual size dimorphism (SSD) have long been debated. While the balance between fecundity selection and sexual selection has received much attention, explanations based on sex-specific ecology have ...
A Herrel   +87 more
core   +1 more source

Genetic Constraints and the Evolution of Display Trait Sexual Dimorphism by Natural and Sexual Selection. [PDF]

open access: yes, 2008
The evolution of sexual dimorphism involves an interaction between sex-specific selection and a breakdown of genetic constraints that arise because the two sexes share a genome.
Blows, M. W.   +2 more
core   +1 more source

Symmetry is related to sexual dimorphism in faces: data across culture and species. [PDF]

open access: yesPLoS ONE, 2008
Many animals both display and assess multiple signals. Two prominently studied traits are symmetry and sexual dimorphism, which, for many animals, are proposed cues to heritable fitness benefits. These traits are associated with other potential benefits,
Anthony C Little   +7 more
doaj   +1 more source

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