Results 11 to 20 of about 125,407 (302)

Intra- and Interspecific Variation in Sexual Dimorphism Patterns of Mud Crab Genus Scylla Along the Equatorial Region

open access: yesFrontiers in Marine Science, 2021
Sexual dimorphism is generally obvious in brachyurans, and sexual dimorphism between species is of a higher degree to allow separation of trophic niches compared to the lower intraspecific variations between sexes.
Khor Waiho   +12 more
doaj   +1 more source

Feeding ecology and sexual dimorphism in a speciose flower beetle clade (Hopliini: Scarabaeidae) [PDF]

open access: yesPeerJ, 2018
The relationship between feeding ecology and sexual dimorphism is examined in a speciose South African monkey beetle clade. We test whether feeding and mating at a fixed site (embedding guild) is associated with greater levels of sexual dimorphism and ...
Jonathan F. Colville   +2 more
doaj   +2 more sources

Host sexual dimorphism and parasite adaptation [PDF]

open access: yes, 2012
In species with separate sexes, parasite prevalence and disease expression is often different between males and females. This effect has mainly been attributed to sex differences in host traits, such as immune response.
Duneau, D., Ebert, Dieter
core   +2 more sources

Sexual Dimorphism of Size Ontogeny and Life History

open access: yesFrontiers in Pediatrics, 2020
Background: Ecological and physiological factors and social and economic constraints affect sex-specific body size. Here, we used the male/female (M/F) height ratio as an indicator of the combined effect of genetic and sex characteristics.
Alina German   +2 more
doaj   +1 more source

Sex-linked inheritance, genetic correlations and sexual dimorphism in three melanin-based colour traits in the barn owl. [PDF]

open access: yes, 2015
Theory states that genes on the sex chromosomes have stronger effects on sexual dimorphism than genes on the autosomes. Although empirical data are not necessarily consistent with this theory, this situation may prevail because the relative role of sex ...
Jensen, H., Roulin, A.
core   +1 more source

Two new genera of Laophontidae (Copepoda: Harpacticoida) without sexual dimorphism in the endopods of the swimming legs [PDF]

open access: yes, 2006
Two new monospecific genera of the harpacticoid family Laophontidae T. Scott, 1905 are described here. Apistophonte wasiniensis gen. et sp. n. was found along the Kenyan coast and Propephonte duangitensis gen. et sp. n.
De Troch, Marleen   +3 more
core   +2 more sources

Ownership-dependent mating tactics of minor males of the beetle Librodor japonicus (Nitidulidae) with intra-sexual dimorphism of mandibles [PDF]

open access: yes, 2007
Intra-sexual dimorphism is found in the weapons of many male beetles. Different behavioral tactics to access females between major and minor males, which adopt fighting and alternative tactics, respectively, are thought to maintain the male dimorphism ...
AP Bridge   +33 more
core   +1 more source

Wing sexual dimorphism of pathogen-vector culicids

open access: yesParasites & Vectors, 2015
Background Sexual dimorphism in animals has been studied from different perspectives for decades. In 1874 Darwin hypothesized that it was related to sexual selection, and even after nearly 140 years, when additional empirical data has become available ...
Flávia Virginio   +2 more
doaj   +1 more source

Facial Anthropometric Norms among Kosovo - Albanian Adults

open access: yesActa Stomatologica Croatica, 2017
The development of an anthropometric craniofacial database is a necessary multidisciplinary proposal. Aim: The aim of this study was to establish facial anthropometric norms and to investigate into sexual dimorphism in facial variables among Kosovo ...
Gloria Staka   +2 more
doaj   +1 more source

Measuring the Inter and Intraspecific Sexual Shape Dimorphism and Body Shape Variation in Generalist Ground Beetles in Russia

open access: yesInsects, 2020
Ground beetles in multiple species vary greatly in the expression of the shape on sexual traits, resulting in a sexual shape dimorphism as a consequence of sexual selection differences.
Hugo A. Benítez   +5 more
doaj   +1 more source

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