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Sexual Systems
Most shrimp species have separate sexes. However, approximately 90 caridean species show some form of protandric hermaphroditism. In protandry,...
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Skull Ontogeny and Sexual Dimorphism
The skull ontogeny and sexual dimorphism of the plains vizcacha, Lagostomus maximus, is here described from quantitative approaches. The quantitative...
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Automated content analysis as a tool to compare content in sexual selection research with examples of sexual selection in evolutionary biology textbooks: implications for teaching the nature of science
BackgroundWe used college-level evolution textbooks to examine the presentation of sexual selection research—a field with ongoing debates related to...
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Sex determining systems of Drosophila control somatic sexual differentiation by cytoplasmic determinants and inductive signals: an insight from pattern development of aberrant sexual genotypes
In Drosophila melanogaster , sexual adaptation shapes the chromosomal level genome organization, by which an embryo with the X:A ratio 0.5 develop...
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Sexual Size Dimorphism in Buthus tunetanus (Scorpiones: Buthidae) from Tunisia
AbstractScorpions are known to exhibit sexual size dimorphism, but data is still lacking from a large number of species throughout the world. Such...
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Sexual dimorphism of the human fetal pelvis exists at the onset of primary ossification
Human adolescent and adult skeletons exhibit sexual dimorphism in the pelvis. However, the degree of sexual dimorphism of the human pelvis during...
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Two sex pheromone receptors for sexual communication in the American cockroach
Volatile sex pheromones are vital for sexual communication between males and females. Females of the American cockroach, Periplaneta americana ,...
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Variation of sexual dimorphism and asymmetry in disease expression of inflammatory arthritis among laboratory mouse models with different genomic backgrounds
Sex difference has shown in the arthritis diseases in human population and animal models. We investigate how the sex and symmetry vary among mouse...
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Influence of sexual dimorphism and dichromatism on reproductive success in a rare native cactus
Identifying plant sexual dimorphic traits is critical in advancing our knowledge on plant–pollinator interactions. For example, dimorphism in floral...
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Sexual dimorphisms in body proportions of Masai giraffes and the evolution of the giraffe’s neck
Giraffes exhibit a large sexual dimorphism in body size. Whether sexual dimorphisms also exist in body proportions of the axial and appendicular...
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Sexual dimorphism in chronic respiratory diseases
Sex differences in susceptibility, severity, and progression are prevalent for various diseases in multiple organ systems. This phenomenon is...
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The sexual identity of neighboring plants influences root-associated bacteria under drought
Background and aimsMale Populus cathayana individuals alleviate the stress-induced damage on females when both sexes of plant individuals grow...
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The evolution of body coloration in dung beetles: diel activity and sexual dimorphism
Animal colouration may evolve due to its effects on predator avoidance, reproduction and thermoregulation, and is likely influenced by the organism’s...
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Defensive tolerance to parasitism is correlated with sexual selection in swallows
Parasite-mediated sexual selection has been the topic of extensive research and enthusiastic debate for more than three decades. Here, we suggest...
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Sexual Behaviors of Odontocetes in Managed Care
A number of odontocete species have been cared for by humans for multiple decades, including but not limited to pilot whales, killer whales,...
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Sexual selection leads to positive allometry but not sexual dimorphism in the expression of horn shape in the blue wildebeest, Connochaetes taurinus
Sexual selection is thought to be an important driver of adaptation, speciation and extinction. Empirically testing these predictions across...
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Exploring ethylene-related genes in Cannabis sativa: implications for sexual plasticity
Key messagePresented here are model Yang cycle, ethylene biosynthesis and signaling pathways in Cannabis sativa . C. sativa floral transcriptomes...
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Covariation between protandry and sexual size dimorphism is age specific in songbirds
In many migratory songbirds, males arrive earlier at stopover sites and at the breeding grounds (‘protandry’) and older birds precede younger ones,...
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Evolution of sexual size dimorphism and sexual segregation in artiodactyls: the chicken or the egg?
In mammals, the dominant theory postulates a causal link between three sexual characters: first, sexual selection promoted the evolution of polygyny;...
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Transcriptome analysis of sexual dimorphism in dorsal down coloration in goslings
BackgroundIn day-old Hungarian white goose goslings, there is a noticeable difference in dorsal down coloration between males and females, with...
