Results 51 to 60 of about 65,108 (304)

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

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

Acute caffeine treatment protects the developing retina from ischemia‐induced cell death

open access: yesFEBS Open Bio, EarlyView.
Caffeine reduces cell death in the developing retina under ischemia (OGD). This effect does not involve BDNF upregulation or antioxidant pathways (NRF2/VEGF). Neuroprotection occurs mainly through adenosine A2A receptor antagonism, decreasing glutamate release and excitotoxicity, highlighting caffeine's potential as an acute neuroprotective agent in ...
Amanda Alves Nascimento   +6 more
wiley   +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 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

A simple procedure for investigating differences in sexual dimorphism between populations [PDF]

open access: yes, 1997
This is the author's PDF version of an book chapter published in Computing and statistics in osteoarchaeology ©1997. The paper was originally delivered at the second meeting of the Osteoarchaeological Research Group at the Institute of Archaeology ...
Lewis, Stephen J.
core  

Variation in sexual dimorphism and assortative mating do not predict genetic divergence in the sexually dimorphic Goodeid fish Girardinichthys multiradiatus

open access: yes, 2012
Sexual dimorphism is often used as a proxy for the intensity of sexual selection in comparative studies of sexual selection and diversification. The Mexican Goodeinae are a group of livebearing freshwater fishes with large variation between species in ...
Smith, G.   +4 more
core   +1 more source

Paternal Circadian Disruption Impairs Offspring Cognition via Sperm microRNAs

open access: yesAdvanced Science, EarlyView.
Paternal circadian disruption remodels the sperm small RNA payload, elevating miR‐92a‐3p/miR‐25‐3p levels and perturbing early embryonic gene regulatory programs. Microinjection experiments and single‐embryo transcriptomics reveal sex‐specific developmental vulnerabilities, ultimately impairing offspring hippocampal synaptic plasticity and cognition ...
Kexin Zou   +22 more
wiley   +1 more source

Sexual Dimorphism in Fin Size and Shape in North American Killifish

open access: yesEcology and Evolution
Sexual dimorphism is intriguing because it suggests that males and females differ in phenotypic optima for traits and that sex‐specific trait values can evolve despite a shared genome.
Elijah J. Davis   +3 more
doaj   +1 more source

Sexual dimorphism and ancestral variation in the pectoral and pelvic girdles of modern humans

open access: yesHomo, 2023
Discussions of the evolution of sexual dimorphism in torso shape and the pectoral region assume that this dimorphism exists independently of body size.
Daphne R. Hudson, John H. Langdon
doaj   +1 more source

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