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Stereological analyses of the annual variation of captive bullfrogadult testes (Lithobates catesbeianus, Shaw 1802)
Gomes, Marcos de Lucca Moreira; Matta, Sérgio Luis Pinto da; Ribeiro-Filho, Oswaldo Pinto; Monteiro, Juliana Castro.
Afiliación
  • Gomes, Marcos de Lucca Moreira; Federal University of Espírito Santo. Department of Health Sciences. São Mateus. BR
  • Matta, Sérgio Luis Pinto da; Federal University of Viçosa. Department of General Biology. Viçosa. BR
  • Ribeiro-Filho, Oswaldo Pinto; Federal University of Viçosa. Department of Animal Biology. Viçosa. BR
  • Monteiro, Juliana Castro; Federal University of Espírito Santo. Department of Agronomical and Biological Sciences. São Mateus. BR
Braz. j. morphol. sci ; 29(3): 182-186, jul.-sept. 2012. tab, graf
Article en En | LILACS | ID: lil-665197
Biblioteca responsable: BR734.1
ABSTRACT
The occurrence of seasonality in bullfrog (Lithobates catesbeianus) spermatogenesis was analyzed by quantifying germ cell populations throughout the year, which were divided into bimesters, from November 2001 to October 2002. Body weight, liver weight, fat body weight and gonadal weight were taken and bimonthly grouped. Using these data, the gonadosomatic, hepatosomatic, and liposomatic indexes were calculated. All animals were kept in the same cement cages in a frog farm, and sampled every month. The cages were underthe influence of climate variables changes, such as photoperiod, temperature, rainfall and relative humidity.Body weight was higher during Spring and Summer, and a significant reduction has occurred between Julyand August. The highest gonadosomatic index values were registered from May to October, coinciding withthe period of gonadal preparation for reproduction. Also, the reproduction of bullfrog is directly related toenvironmental factors, mainly due to Summer and Winter humidity variations.
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Texto completo: 1 Colección: 01-internacional Base de datos: LILACS Asunto principal: Rana catesbeiana / Conducta Sexual Animal Límite: Animals Idioma: En Revista: Braz. j. morphol. sci Asunto de la revista: ANATOMIA Año: 2012 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Brasil
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: LILACS Asunto principal: Rana catesbeiana / Conducta Sexual Animal Límite: Animals Idioma: En Revista: Braz. j. morphol. sci Asunto de la revista: ANATOMIA Año: 2012 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Brasil