Results 21 to 30 of about 244,987 (304)

Multi-omics analysis reveals changes in tryptophan and cholesterol metabolism before and after sexual maturation in captive macaques

BMC Genomics, 2023
Rhesus macaques (Macaca mulatta, RMs) are widely used in sexual maturation studies due to their high genetic and physiological similarity to humans.
Xu Liu, Xuyuan Liu, Xinqi Wang, Ke Shang, Jiawei Li, Yue Lan, Jiao Wang, Jing Li, Bisong Yue, Miao He, Zhenxin Fan   +10 more
doaj   +1 more source

Blood lead levels and timing of male sexual maturity: A longitudinal study of Russian boys

Environment International, 2019
Background: Higher blood lead levels (BLLs) have been linked to neurologic deficits and impaired growth, but few studies have evaluated their association with timing of sexual maturity or pubertal progression in boys. Methods: In a longitudinal cohort of
Paige L. Williams, Andrea Bellavia, Susan A. Korrick, Jane S. Burns, Mary M. Lee, Oleg Sergeyev, Russ Hauser   +6 more
doaj   +1 more source

Reproductive biology and size at onset of sexual maturity of the spiny lobster Panulirus homarus homarus (Linnaeus, 1758) in Khadiyapatnam, southwest coast of India [PDF]

, 2017
The size at first sexual maturity is described for females of the Scalloped spiny lobster Panulirus homarus homarus (Palinuridae) sampled from landings at Khadiyapatnam in Kanyakumari district of Tamilnadu, on the southwest coast of India, based on ...
Radhakrishnan, E V, Thankarajan, R
core   +1 more source

Playing safe: Assessing the risk of sexual abuse to elite child athletes [PDF]

, 1997
Young athletes frequently suffer from being seen as athletes first and children second. This has consequences for their legal, civil and human rights as children (Kelly et al., 1995) and for the way in which sport organisations choose to intervene on ...
Armstrong, N., Brackenridge, C.H., Brackenridge, C.H., Canadian Athletes Association, Celia Brackenridge, Crouch, M., Donnelly, P., Donnelly, P., Dyer, K.F., Finkelhor, D., Gonsiorek, J.C., Kelly, L., Kirby, S., Lee, M., Lindsey, E., Marshall, W.L., Messner, M., National Coaching Foundation, Roberts, G., Sandra Kirby, Sharman, I.M., Wells, C.L., Whetsell-Mitchell, J., Whilmore, J.H.   +23 more
core   +1 more source

Reproductive System Structure, Development and Function in Cephalopods with a New General Scale for Maturity Stages [PDF]

, 1992
The main types of reproductive system structure, development and functions in cephalopods are described from personal observations and use of the literature. There is one type in males and three in females which are order specific.
Arkhipkin, A. I.
core   +1 more source

Development of sexual organs and fecundity in Octopus vulgaris Cuvier, 1797 from the Sardinian waters (Mediterranean Sea) [PDF]

, 2013
In this paper we report information about the sexual maturity process of 245 Octopus vulgaris specimens (75 females and 170 males) from the Mediterranean Sea. For both sexes, six stages of sexual maturity (immature, developing, maturing, mature, spawning,
Cau A, Cau Al, Cuccu D, Follesa M C, Mereu M, Porcu C   +5 more
core   +3 more sources

Heterochrony of puberty in the European badger (Meles meles) can be explained by growth rate and group-size: Evidence for two endocrinological phenotypes.

PLoS ONE, 2019
Puberty is a key stage in mammalian ontogeny, involving endocrinological, physiological and behavioural changes, moderated by intrinsic and extrinsic factors. Thus, not all individuals within one population achieve sexual maturity simultaneously.
Nadine Adrianna Sugianto, Chris Newman, David Whyte Macdonald, Christina Dagmar Buesching   +3 more
doaj   +1 more source

Identification of the TSSK4 Alternative Spliceosomes and Analysis of the Function of the TSSK4 Protein in Yak (Bos grunniens)

Animals, 2022
In mammals, the testis-specific serine/threonine kinase (TSSK) is essential for spermatogenesis and male fertility. TSSK4 belongs to the family of the testis-specific serine/threonine-protein kinase (TSSK), with a crucial role in spermatogenesis.
Xingdong Wang, Jie Pei, Lin Xiong, Shaoke Guo, Mengli Cao, Yandong Kang, Pengjia Bao, Xiaoyun Wu, Min Chu, Chunnian Liang, Ping Yan, Xian Guo   +11 more
doaj   +1 more source

Changes in gut microbiota composition with age and correlations with gut inflammation in rats

PLoS ONE, 2022
Increasing evidences indicate that gut microbiota composition is associated with multiple inflammatory diseases. However, little is known about how gut microbiota changes with age and correlations with gut inflammation at sexual maturity stage of healthy
Chen Meng, Siyuan Feng, Zikai Hao, Chen Dong, Hong Liu   +4 more
doaj   +2 more sources

Differential Sexual Maturity Among Breeding Adults of Black Sea Turtle (Chelonia mydas agassizii) from Michoacan, Mexico

Diversity
This work assessed the sexual maturity of breeding females and males of black sea turtles (Chelonia mydas agassizii) from the population in Michoacan, Mexico.
Carlos Delgado-Trejo, Miguel Ángel Reyes-López, David Guillermo Pérez-Ishiwara, Omar Domínguez-Domínguez, Andrea Tapia-García, Fátima Yedith Camacho-Sánchez, Cutzi Bedolla-Ochoa   +6 more
doaj   +1 more source