Results: 12

Histology and structure of the testicles in three species of Atelopus frogs (Anura: Bufonidae) endemic to the Sierra Nevada de Santa Marta, Colombia

Rev. biol. trop; 69 (3), 2021
Abstract Introduction: Testicular histology constitutes one of the least explored aspects in frogs of the genus Atelopus. This taxonomic group shows an alarming population decline; therefore, its reproductive biology is one of the greatest topics of interest for its conservation. Objective: To describe t...

Parásitos nematodos de la rana de piscina (Pelophylax lessonae) en la cuenca del Río Volga

Rev. MVZ Córdoba; 24 (3), 2019
RESUMEN Objetivo. Presentar una revisión moderna de la fauna de nematodos de la rana esculenta Pelophylax lessonae (Camerano, 1882) de las poblaciones de la cuenca del Río Volga. Materiales y métodos. Este trabajo consolida los datos de diferentes trabajos helmintológicos de los últimos 80 años, ...

Liver histopathological changes in breeding bullfrogs

Acta sci., Biol. sci; 35 (4), 2013
In order to complement the histopathological study of juveniles and tadpoles of the bullfrog, Lithobathes catesbeianus, fed commercial diet used by frog farms in Rio de Janeiro, containing 40% crude protein, we performed necropsy and histopathology of the liver to establish a relationship between the qua...

Evaluation of the semen characteristics after induced spermiation in the bullfrog Lithobates catesbeianus

Acta sci., Biol. sci; 35 (3), 2013
Evaluation of semen characteristics after hormonal induction of the bullfrog could provide valuable information on the gametes of this species, which may be useful for projects related to artificial fertilization, animal improvement, and cryopreservation. Bullfrog males were induced to spermiate with bus...

Buserelin acetate-induced spermiation in Leptodactylus ocellatus and evaluation of semen characteristics

Acta sci., Biol. sci; 35 (1), 2013
By understanding the hormonal action behind the induction of spermiation in Leptodactylus ocellatus can help in the collection of semen for artificial insemination and cryopreservation. The experiments were conducted at the Experimental Frog Farm of the Federal University of Viçosa. Seven L. ocellatus m...

Phenotypic and molecular variation in the green and black poison-dart frog Dendrobates auratus (Anura: Dendrobatidae) from Costa Rica

Rev. biol. trop; 57 (supl.1), 2009
The green and black poison-dart frog Dendrobates auratus exhibits high intraspecific variation in hue color and pattern throughout its range, making it a very popular species in the pet trade. We analyzed the correspondence between color variation and molecular variation of D. auratus from Costa Rica usi...

Caracterizaçäo microbiológica e clínica de surtos de ®red leg» em Minas Gerais e avaliaçäo do efeito bactericida in vitro do VANTOCIL IB para Aeromonas hydrophila
Microbiological and clinical characterization of ®red leg» outbreaks in Minas Gerais, Brazil, and evaluation of in vitro bacterial effects of VANTOCIL IB for Aeromonas hydrophila

Ciênc. rural; 30 (4), 2000
Com o objetivo da caracterizaçäo da ocorrência de ®red leg» em Minas Gerais, avaliaram-se räs jovens e adultas que apresentavam úlceras nas patas e dedos, derrame hemorrágico na pele da regiäo ventral, incoordenaçäo motora, altas taxas de mortalidade em adultos e abscessos hepáticos à necrop...