Results 31 to 40 of about 124,493 (301)

Morphological variation of the newly confirmed population of the javelin sand boa, Eryx jaculus (Linnaeus, 1758) (Serpentes, erycidae) in Sicily, Italy [PDF]

open access: yes, 2019
The presence of the Javelin sand boa in Sicily has recently been confirmed. Here the morphological characters and sexual dimorphism of the Sicilian population of Eryx jaculus are presented.
Barra S. A.   +5 more
core   +1 more source

Sexual dimorphism in autoimmunity [PDF]

open access: yesJournal of Clinical Investigation, 2015
Autoimmune diseases occur when the immune system attacks and destroys the organs and tissues of its own host. Autoimmunity is the third most common type of disease in the United States. Because there is no cure for autoimmunity, it is extremely important to study the mechanisms that trigger these diseases.
Kira, Rubtsova   +2 more
openaire   +2 more sources

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  

Sexual Dimorphism in the Chinese Endemic Species Hynobius maoershanensis (Urodela: Hynobiidae)

open access: yesAnimals, 2022
Sexual dimorphism is common in most vertebrate species and has diverse manifestations. The study of sexual dimorphism has critical significance for evolutionary biological and ecological adaptation.
Huiqun Chen   +5 more
doaj   +1 more source

Predictable Patterns Of Disruptive Selection In Stickleback In Postglacial Lakes [PDF]

open access: yes, 2008
Disruptive selection is often assumed to be relatively rare, because it is dynamically unstable and hence should be transient. However, frequency-dependent interactions such as intraspecific competition may stabilize fitness minima and make disruptive ...
Bolnick, Daniel I., Lau, On Lee
core   +1 more source

Stat5b Regulates Sexually Dimorphic Gene Expression in Zebrafish Liver

open access: yesFrontiers in Physiology, 2018
Sexual size dimorphism is an interesting phenomenon occurred in many fish species. Wildtype zebrafish exhibits a significant sexual dimorphism in body size at the adult stage.
Peipei Huang   +5 more
doaj   +1 more source

Sexual dimorphism in chronic respiratory diseases

open access: yesCell & Bioscience, 2023
Sex differences in susceptibility, severity, and progression are prevalent for various diseases in multiple organ systems. This phenomenon is particularly apparent in respiratory diseases. Asthma demonstrates an age-dependent pattern of sexual dimorphism.
Karosham Diren Reddy   +1 more
doaj   +1 more source

Sexually size dimorphic brains and song complexity in passerine birds [PDF]

open access: yes, 2004
Neural correlates of bird song involve the volume of particular song nuclei in the brain that govern song development, production, and perception. Intra- and interspecific variation in the volume of these song nuclei are associated with overall brain ...
Eens, Marcel   +3 more
core   +2 more sources

Sex on the Beach: Sexual Size Dimorphism Among Aquatic Bugs (Nepomorpha) Inhabiting Different Habitats

open access: yesEcology and Evolution
Aquatic bugs (Nepomorpha) are a species‐rich taxon of insects inhabiting all types of freshwaters, often at high densities, and some are among the dominant predators in aquatic food webs.
Gábor Bakonyi, Anikó Seres
doaj   +1 more source

A Testis‐Specific Aralkylamine N‐Acetyltransferase Regulates Dimorphic Sperm Function and Male Fertility in Moths

open access: yesAdvanced Science, EarlyView.
We identify a Lepidoptera‐conserved testis‐specific arylalkylamine N‐acetyltransferase (LTNAT) that governs male moth fertility via a novel mechanism. LTNAT loss disrupts eupyrene sperm mitochondrial derivatives and impairs apyrene sperm motility, offering a safe molecular target for innovative pesticides and genetic pest control.
Hao Sun   +5 more
wiley   +1 more source

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