Testicular growth and comb and wattles development in three Italian chicken genotypes reared under free range conditions [PDF]
, 2015 Male chickens belonging to three Italian purebreds \u2013 Ermellinata di Rovigo (ER), Robusta lionata (RL) and Robusta maculata (RM) \u2013 were studied. All the birds were reared under the same rearing conditions (from May until autumn).
DE FASSI NEGRELLI RIZZI, Chiara +1 more
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Association of Sexual Maturation and Parent-Child Communication on Maturity Fears in Elementary School Girls [PDF]
Child Health Nursing Research, 2016 Purpose: The purpose of this study was to investigate factors that influence maturity fears in elementary school girls. Methods: The participants were 118 3rd and 4th grade students from 3 elementary schools in 3 cities in Korea.
Hun Ha Cho, So-Hyun Moon
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Summer Diapause of the Clover Leaf Weevil, \u3ci\u3eHypera Punctata,\u3c/i\u3e and Lesser Clover Leaf Weevil, \u3ci\u3eHypera Nigrirostris,\u3c/i\u3e in Wisconsin [PDF]
, 2017 Low respiration rates, immobility, lack of feeding, and undeveloped reproductive systems confirmed a summer diapause in the overwintered and current-year adults of the clover leaf weevil, Hypera punctata, and lesser clover leaf weevil, Hypera ...
Apple, James W, Latsinger, James A
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Enhanced at puberty 1 (EAP1) is a new transcriptional regulator of the female neuroendocrine reproductive axis [PDF]
, 2007 The initiation of mammalian puberty and the maintenance of female reproductive cycles are events controlled by hypothalamic neurons that secrete the decapeptide gonadotropin-releasing hormone (GnRH).
Sabine Heger +56 more
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Anxious to see you: Neuroendocrine mechanisms of social vigilance and anxiety during adolescence. [PDF]
, 2020 Social vigilance is a behavioral strategy commonly used in adverse or changing social environments. In animals, a combination of avoidance and vigilance allows an individual to evade potentially dangerous confrontations while monitoring the social ...
Cassano G. B. +6 more
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Cadernos de Saúde Pública, 2010 Este estudo objetivou estimar a prevalência de excesso de peso e obesidade abdominal em escolares segundo antropometria e maturação sexual. Foi um estudo transversal, incluindo 1.405 escolares de 10-14 anos, de ambos os sexos, residentes no Recife ...
Isabel Carolina da Silva Pinto +3 more
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A benign juvenile environment reduces the strength of antagonistic pleiotropy and genetic variation in the rate of senescence [PDF]
, 2015 The environment can play an important role in the evolution of senescence because the optimal allocation between somatic maintenance and reproduction depends on external factors influencing life expectancy.
Gonzalez G. +3 more
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STUDY THE EFFECT OF AGE AND SEX ON SOMEHAEMATOLOGICAL PARAMETERS IN GOLDEN LOCAL QUAIL [PDF]
Basrah Journal of Veterinary Research, 2013 Effect of age and sex were measured during and before sexual maturation of golden local quail males and females. Maels erythrocytes count showed higher value compared with that of adult females .
Muhammad H.K
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Sexual maturation in Turkish boys
Annals of Human Biology, 1975 Ages of onset and attainment of various stages of secondary sexual characters were assessed from cross-sectional data on 1530 city schoolboys in Istanbul, Turkey. The subjects were grouped into four socio-economic classes. Ages of onset of pubic hair (11.80 years), axillary hair (13.15 years), facial hair (14.45 years) and laryngeal development (13.37 ...
O, Neyzi +4 more
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Baltic Journal of Sport and Health Sciences, 2018 Research background and hypothesis. Although trends of decline in physical activity during adolescence are determined by most authors, the association of biological maturation with physical activity has not been commonly studied. It is thought that the
Kristina Visagurskienė +4 more
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