Results 51 to 60 of about 29,197 (258)

Sexual size dimorphism in Myotis nigricans (Schinz, 1821) (Chiroptera: Vespertilionidae) from south Brazil

Brazilian Journal of Biology
Among Vespertilionidae species, sexual size dimorphism is very well documented, in which females are larger than males. The differences are mainly in body weight, skull measurements and forearm length.
R. Bornholdt, LR. Oliveira, ME. Fabián
doaj   +1 more source

Extreme sexual brain size dimorphism in sticklebacks: a consequence of the cognitive challenges of sex and parenting?

PLoS ONE, 2012
Selection pressures that act differently on males and females produce numerous differences between the sexes in morphology and behaviour. However, apart from the controversial report that males have slightly heavier brains than females in humans ...
Alexander Kotrschal, Katja Räsänen, Bjarni K Kristjánsson, Mike Senn, Niclas Kolm   +4 more
doaj   +1 more source

A Gut‐Brain Axis Underlying Succinate‐Associated Compulsive‐Like Behavior

Advanced Science, EarlyView.
Gut‐derived succinate is associated with an excitatory‐inhibitory imbalance in dmPFC glutamatergic neurons, involving microglial SUCNR1 activation and vagal afferent signaling via upregulated gut 5‐HT4 receptors along the DVC‐CeA‐dmPFC circuit, changes that are linked to excessive compulsive‐like behavior.
Yi Li, Ying‐Dan Zhang, Wei Wang, Xin‐Yi Wu, Di Li, Xin Gong, Fei Tian, Meng‐Yu Dai, Jian Gao, Zi‐Feng Zheng, Zi‐Yang Bi, Dong‐Dong Shi, Zhen Wang   +12 more
wiley   +1 more source

Sexual dimorphism of head, teeth, flipper and body size in northern elephant seals (Mirounga angustirostris) throughout ontogeny [PDF]

Royal Society Open Science
Sexual dimorphism, the difference in appearance between males and females of the same species, can shape physiology, behaviour and fitness. Yet, few species have age- and sex-specific data to characterize its development.
Madeleine R. Stewart, Stephanie K. Adamczak, Salma T. Abdel-Raheem, Daniel P. Costa, Roxanne S. Beltran   +4 more
doaj   +1 more source

Ontogenetic Development of Sexual Dimorphism in Body Mass of Wild Black-and-White Snub-Nosed Monkey (Rhinopithecus bieti)

Animals, 2023
Sexual dimorphism exists widely in animals, manifesting in different forms, such as body size, color, shape, unique characteristics, behavior, and sound. Of these, body mass dimorphism is the most obvious.
Yan-Peng Li, Zhi-Pang Huang, Yin Yang, Xiao-Bin He, Ru-Liang Pan, Xin-Ming He, Gui-Wei Yang, Hua Wu, Liang-Wei Cui, Wen Xiao   +9 more
doaj   +1 more source

A Hepatocyte‐to‐Stellate Cell Axis Couples Alternate‐Day Fasting to Liver Fibrosis Resolution via ATG7 S‐Nitrosylation

Advanced Science, EarlyView.
Alternate‐day fasting suppresses mitochondrial complex II assembly via SDHAF4 to upregulate hepatocyte eNOS. The resulting nitric oxide S‐nitrosylates ATG7 at C184 in hepatic stellate cells, restraining autophagic flux and preventing their profibrotic activation.
Xueqiang Wang, Mengqi Zeng, Cunxiao Sun, Yuhan Gou, Zhaode Feng, Weiqiang Lv, Chaoying Yan, Hansen Wu, Pengfei Zhang, Jie Xu, Ke Cao, Hao Li, Mingge Ding, Zhongbo Liu, Xing Zhang, Jiankang Liu, Xuan Zou, Zhihui Feng   +17 more
wiley   +1 more source

SCTR–Expressing Astrocyte–Serotonergic Neuron Signaling Drives Sexual Dimorphism in Depression Through KAT7/H4ac–Foxc2 Epigenetic Axis in an AMPK‐Dependent Manner

Advanced Science, EarlyView.
Astrocytic SCTR modulates depressive‐related phenotypes via AMPKα1, whereas lowered Mt1 blunts Megalin‐dependent AMPKα2 signaling in serotonergic neurons. Diminished AMPKα2 hinders KAT7 nuclear translocation, curtails KAT7 occupancy and H4K8ac at the Foxc2 promoter, and represses Foxc2 transcription, revealing cell‐type‐specific AMPK‐linked epigenetic ...
Fantao Meng, Jing Liu, Juanjuan Dai, Min Wu, Wentao Wang, Mengdi Zhang, Shujun Jiang, Yifan Cao, Lihong Xu, Lin Du, Dan Wang, Di Zhao, Gaofeng Qin, Dong Wang, Wei Li, Chen Li   +15 more
wiley   +1 more source

Sex-related head size and shape dimorphism in Mapaná snakes (Bothrops asper) kept in captivity

Revista Colombiana de Ciencias Pecuarias, 2013
Background: sexual size dimorphism in snakes is generally well documented, however, sexual shape dimorphism has been poorly studied. As snakes are considered gape-limited predators, identifying patterns of sexual size and head shape dimorphism can help ...
Ana M Henao-Duque, Claudia P Ceballos
doaj  

Sexual size dimorphism of group-living Mongolian gerbils Meriones unguicutalus (Muridae: Gerbillinae)

The European Zoological Journal, 2017
Polygynous mammals often have male-biased sexual size dimorphism due to male–male competition for mates. However, fecundity selection may enlarge female body size.
G. Wang
doaj   +1 more source

It's not all about size: sexual size dimorphism and caudal autotomy of Campbell's Alligator Lizard, Abronia campbelli Brodie & Savage, 1993 [PDF]

Herpetozoa
Sexual dimorphism and caudal autotomy are poorly documented in the lizard genus Abronia. We analyzed sexual size dimorphism and caudal autotomy in 54 adult Campbell’s Alligator Lizards (Abronia campbelli) from Jalapa, Guatemala.
Mónica Torres-Almazán, Klaus Thomas Schrei Godoy, Brad A. Lock, Armando H. Escobedo-Galván, José F. González-Maya   +4 more
doaj   +3 more sources