Results 31 to 40 of about 50,849 (296)
Size at sexual maturity in female Euphylax robustus (Brachyura: Portunidae) collected in coastal waters off Ecuador [PDF]
NaupliusSize at sexual morphometric and physiological maturity was estimated in females of the swimming crab, Euphylax robustus. The individuals were caught as bycatch in an artisanal trawl fishery targeting Titi shrimp (Protrachypene precipua) in coastal waters
Johan Cedeño, René Zambrano
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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 +10 more
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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 +6 more
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Maturity of a giant: age and size reaction norm for sexual maturity for Atlantic leatherback turtles
, 2021 Leatherback marine turtles are the largest extant turtles with some individuals measuring up to 2 m in carapace length. In addition, this species remains in oceanic habitat during much its life, making it difficult to investigate its ontogeny from ...
Chevallier, Damien +11 more
core +1 more source
PLoS ONE, 2011 This paper shows new evidence of a steady long-term decline in age of male sexual maturity since at least the mid-eighteenth century. A method for measuring the timing of male maturity is developed based on the age at which male young adult mortality ...
Joshua R Goldstein
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Review of Sexual Maturity in the Minipig [PDF]
Toxicologic Pathology, 2016 It is important to know whether the animals used in toxicology studies are sexually mature. As minipigs are being used increasingly in toxicity studies, we reviewed published data on the age of sexual maturity in the minipig. Maturity in females was assessed on the basis either of normal cycles of progesterone secretion or of the histological presence ...
Paul C, Howroyd +2 more
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Sexual maturation and the adrenal glands [PDF]
Reproduction, 1978 It is a definite possibility that organs which are primarily elements of functional systems other than the reproductive system are involved in sexual maturation. The adrenal glands are attractive candidates for such a role in sexual maturation: they are capable of producing androgens, oestrogens and progesterone, not only in the adult, but also in the ...
H M, Meijs-Roelofs, J, Moll
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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 +3 more
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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 +11 more
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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 +4 more
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