Results 11 to 20 of about 39,411 (255)

Reproductive Biology, Sperm storage, and Sexual Maturity of Thamnodynastes strigatus (Serpentes: Dipsadidae) [PDF]

open access: yesAnais da Academia Brasileira de Ciências, 2022
Life history strategies determine and influence many aspects of species fitness. In this study, we describe the reproductive biology - reproductive cycle, sperm storage, and sexual maturity - of Thamnodynastes strigatus in South Brazil.
LUIZA LOEBENS   +3 more
doaj   +1 more source

Hubungan Kecemasan Sosial dan Kematangan Emosi dengan Kematangan Seksual Remaja SMP di Kabupaten Bantul Yogyakarta

open access: yesPsikopedagogia: Jurnal Bimbingan dan Konseling, 2012
This research aims to find out some factors related to the sexual maturity, such as the social anxiety and emotional maturity on the adolescents of the SMP in Kabupaten Bantul, Yogyakarta.
Endang Sri Lestari
doaj   +1 more source

Moderators of the effect of high-intensity and moderate-intensity games in school children on cardiorespiratory fitness and body composition

open access: yesMotricidade, 2020
This study examined the moderators of sex, maturity sexual stage, and age in the intervention of high intensity and moderate-intensity exercises on changes in cardiorespiratory fitness (CRF) and body composition. Forty-eight children (aged 9,48±0.5 years)
Tomas Rodolfo Reyes Amigo   +1 more
doaj   +1 more source

Sexual Maturation, Attitudes towards Sexual Maturity, and Body Esteem in Elementary-School Children [PDF]

open access: yesKorean Journal of Women Health Nursing, 2018
PURPOSE: The purpose of this study is to evaluate sexual maturation, attitudes toward sexual maturity, and body esteem in the sexual development of Korean elementary-school boys and girls.
Sunah Park   +5 more
doaj   +1 more source

Size at sexual maturity in female Euphylax robustus (Brachyura: Portunidae) collected in coastal waters off Ecuador [PDF]

open access: yesNauplius
Size 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
doaj   +1 more source

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

open access: yesBMC 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
doaj   +1 more source

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

open access: yesEnvironment 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
doaj   +1 more source

Review of Sexual Maturity in the Minipig [PDF]

open access: yesToxicologic 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
openaire   +2 more sources

Sexual maturation and the adrenal glands [PDF]

open access: yesReproduction, 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
openaire   +2 more sources

A secular trend toward earlier male sexual maturity: evidence from shifting ages of male young adult mortality.

open access: yesPLoS 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
doaj   +1 more source

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