Results 21 to 30 of about 869 (167)

Topografia e irrigação do oviduto da rã-touro Lithobates catesbeianus (Shaw, 1802)

Biotemas, 2013
A rã-touro (Lithobates catesbeianus) é uma espécie nativa da América do Norte. Ela pode atingir aproximadamente 20 cm de comprimento e um peso corpóreo de 500 g.
Marcela Cristina Lisboa, Caio Henrique de Oliveira Carniatto, Rosângela Felipe Rodrigues, Alan Peres Ferraz de Melo   +3 more
doaj   +1 more source

Duration of spermatogenesis in the bullfrog (Lithobates catesbeianus)

Theriogenology, 2009
The bullfrog (Lithobates catesbeianus) has substantial economic importance and has also been used as an experimental model for biological studies in the fields of pharmacology, medicine, and reproductive biology, especially studies addressing gametogenesis.
Segatelli, T. M., Batlouni, S.R., Franca, L. R.   +2 more
openaire   +3 more sources

Multihost saprobes are facultative pathogens of bullfrog Lithobates catesbeianus eggs [PDF]

Diseases of Aquatic Organisms, 2012
Pathogens that infect more than one host species create complex linkages in ecological communities. We tested whether saprobes that grow on multiple host species in aquatic systems can be facultative pathogens of amphibian eggs. We isolated oomycetes from dead arthropods, vertebrates, plant leaves, and frog eggs that coexisted in a small pond. Analysis
Gregory R, Ruthig, Katie N, Provost-Javier   +1 more
openaire   +2 more sources

A new record for American Bullfrog (Lithobates catesbeianus) in San Juan, Argentina

Revista Mexicana de Biodiversidad, 2011
We report a new record of Lithobates catesbeianus (American bullfrog) from Argentina. L. catesbeianus was first introduced to San Juan Province 11 years ago in Calingasta Department, where the habitat is pre-cordilleran.
Eduardo Sanabria, Yanina Ripoll, Marcelo Jordan, Lorena Quiroga, Mariano Ariza, María Guillemain, Mauricio Pérez, Héctor Chávez   +7 more
doaj   +1 more source

Immune and hormonal modulation in the postprandial period of bullfrogs (Lithobates catesbeianus)

Journal of Experimental Biology, 2021
ABSTRACT Mammals show immune up-regulation and increased plasma and local (gastrointestinal tract) concentrations of some immunoregulatory hormones, such as corticosterone and melatonin, after feeding. However, little is known about the endocrine and immune modulation in the postprandial period of ectothermic animals.
Aymam C. de Figueiredo, Stefanny C. M. Titon, João C. Cyrino, Letícia A. K. Nogueira, Fernando R. Gomes   +4 more
openaire   +2 more sources

Leaf Litter Leachate Limits Fungal Pathogen Growth but Not Amphibian Infection. [PDF]

Ecol Evol
Terrestrial leaf litter can have direct effects on aquatic organisms. We found that leaf litter leachates can have direct negative effects on a fungal amphibian pathogen (Batrachochytrium dendrobatidis), but these effects did not translate to large changes in infection.
Martin EL, Adarve-Rengifo I, Siddons SR, Blackwood PE, Hua J, Searle CL.   +5 more
europepmc   +2 more sources

Non-linear growth models for bullfrog tadpoles Modelos de crescimento não-lineares para girinos de rã-touro

Ciência e Agrotecnologia, 2012
Describing animal growth rate using non-linear models allows a detailed evaluation of growth behavior. Four non-linear models were used to fit weight gain and total length data of bullfrog (Lithobates catesbeianus) tadpoles, as follows: Gompertz, Y = A ...
Cleber Fernando Menegasso Mansano, Marta Verardino De Stéfani, Marcelo Maia Pereira, Beatrice Ingrid Macente   +3 more
doaj   +1 more source

Potential effects of climate change on the distribution of invasive bullfrogs Lithobates catesbeianus in China

Acta Herpetologica, 2020
Climate plays important roles in determining the geographical distribution of species, including the invasion area of alien species. Little is known, however, about the influence of climate change on the distribution area of invasive amphibian species in
Li Qing Peng, Min Tang, Jia Hong Liao, Hai Fen Qing, Zhen Kun Zhao, David A. Pike, Wei Chen   +6 more
doaj   +1 more source

Lithobates catesbeianus

, 2015
Published as part of Diesmos, Arvin C., Watters, Jessa L., Huron, Nicholas A., Davis, Drew R., Alcala, Angel C., Crombie, Ronald I., Afuang, Leticia E., Gee-Das, Genevieve, Sison, Rogelio V., Sanguila, Marites B., Penrod, Michelle L., Labonte, Marie J., Davey, Conner S., Leone, E. Austin, Diesmos, Mae L., Sy, Emerson Y., Welton, Luke J., Brown, Rafe M.
Diesmos, Arvin C., Watters, Jessa L., Huron, Nicholas A., Davis, Drew R., Alcala, Angel C., Crombie, Ronald I., Afuang, Leticia E., Gee-Das, Genevieve, Sison, Rogelio V., Sanguila, Marites B., Penrod, Michelle L., Labonte, Marie J., Davey, Conner S., Leone, E. Austin, Diesmos, Mae L., Sy, Emerson Y., Welton, Luke J., Brown, Rafe M., Siler, Cameron D.   +18 more
openaire   +1 more source

Morphological characterization of the gonads of bullfrog tadpoles (Lithobates catesbeianus) [PDF]

Journal of Morphological Sciences, 2015
Abstract Introduction: This work describes various aspects of early gonadal development of female and male in pre-metamorphic tadpoles (Lithobates catesbeianus) at Gosner stage 25. Materials and Methods: Ovaries and testicles were prepared for routine light microscopy for morphological study and for acridine orange technique fluroescent ...
Rizzi, G. M., Silva-Zacarin, E. C.M., Oliveira, C. R., Costa, M. J., Salla, R. F., Abdalla, F. C.   +5 more
openaire   +2 more sources