Results: 68

Seminal parameters and sexual behavior on farm rabbits provided with a diet supplemented with canola oil at the start of puberty

Int. j. morphol; 36 (1), 2018
SUMMARY: In order to evaluate the effect on sexual behavior and spermatic parameters of white New Zealand rabbits, at the onset of puberty, they were fed a standard diet supplemented with canola oil (obesogenic). Two groups were formed; one of which received daily 180 g of a standard commercial diet supp...

Manejo médico de personas transgénero en la niñez y la adolescencia

Resumen Las personas transgénero o con inconformidad de género (IG) se identifican a sí mismas con un género distinto al que les correspondería por su sexo al nacimiento. La demanda de servicios de salud de familias con niños, niñas o adolescentes transgénero va en aumento. La prevalencia de IG e...

Fenótipos corporais na adolescência e a maturação sexual

Nosso objetivo é descrever fenótipos corporais estimados por técnica multivariada para avaliação do estado nutricional na adolescência, durante o processo de maturação sexual. A amostra foi composta por 833 adolescentes escolares de 10 a 15 anos selecionados por amostragem complexa em Piracicaba,...

Growth and reproduction in captivity unveils remarkable life-history plasticity in the smallnose fanskate, Sympterygia bonapartii (Chondrichthyes: Rajiformes)

Neotrop. ichthyol; 16 (4), 2018
We analyzed growth and reproduction of captive-born smallnose fanskates Sympterygia bonapartii. Egg cases were obtained from oviposition of two females caught in the wild and held at Temaikèn Aquarium. Following hatching, growth was analyzed in 13 females and 21 males until sexual maturity. Pattern of o...

Reproducción de los róbalos Centropomus undecimalis y C. Ensiferus (Perciformes: Centropomidae) en una laguna costera tropical

Rev. biol. trop; 65 (1), 2017
ResumenLos róbalos (C. undecimalis y C. ensiferus) son recursos pesqueros de importancia en toda su área de distribución. En Venezuela son capturados por pesquerías artesanales a lo largo de toda la costa, sin embargo, los estudios sobre su biología que permitan orientar regulaciones de su pesca son...

Parámetros biológicos básicos para la conservación de Pseudocurimata lineopunctata (Characiformes, Curimatidae) en el Río Anchicayá, Valle del Cauca, Colombia

Rev. biol. trop; 65 (1), 2017
ResumenPseudocurimata lineopunctata representa un importante aporte nutricional para las comunidades locales en Colombia y Ecuador. A pesar que su captura anual es baja (590 kg/año), no hay restricciones sobre el tamaño mínimo, y esta especie está catalogada como vulnerable en riesgo de extinción mo...

Reproductive cycle of the endemic and threatened fish Puntius shalynius (Cypriniformes: Cyprinidae) in Meghalaya, India

Rev. biol. trop; 65 (1), 2017
Abstract:Puntius shalynius is a highly endemic freshwater minor carp that is economically important and is threatened because of its ornamental value. The present investigation evaluated this barb gonadal maturation, based on morphology and spawning of this species in the Umiam river, Meghalaya, India. T...

Reproductive biology of Sodhiana iranica (Brachyura: Gecarcinucidae) from Southern Iran

Rev. biol. trop; 65 (1), 2017
Abstract:Freshwater crab, Sodhiana iranica, is an endemic gecarcinucid crab that has been recently reported from Southern Iran. This research examined some reproductive aspects of S. iranica from Eelood freshwater spring, Southern Iran. Crabs were haphazardly sampled from April 2012 to April 2013, on a b...

Permanent germinal epithelium and reproductive cycle of Atractosteus tropicus (Lepisosteiformes: Lepisosteidae) males, Tabasco, Mexico

Rev. biol. trop; 64 (4), 2016
Abstract:The tropical gar A. tropicus plays an important ecological role as it regulates other fish stocks in different water bodies in Southeastern México. Nevertheless, wild populations are declining, and one conservation alternative is the aquaculture production and basic knowledge of reproductive bi...

Association between cardiorespiratory fitness and body fat in girls

Rev. paul. pediatr; 34 (4), 2016
Abstract Objective: To estimate the prevalence of low cardiorespiratory fitness and its association with excess body fat, considering the sexual maturation and economic level in female adolescents. Methods: Cross-sectional, epidemiological study of 1223 adolescents (10-17 years) from the public school ...