Results 21 to 30 of about 3,717 (132)

Non-O1/O139 Vibrio cholerae causes severe intestinal disease in bullfrogs (Rana catesbeiana)

open access: yesAnimal Diseases, 2023
Bullfrogs (Rana catesbeiana) are amphibians with high economic value, but in recent years, bullfrog farming has encountered serious threats of bacterial diseases, and the “bullfrog economy” is facing a continuous decline.
Wenyu Liao   +9 more
doaj   +1 more source

Measuring stabilized heart rates in the prairie lizard, a small vertebrate ectotherm

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract The ability to accurately measure heart rates is vital for studying the ecological and evolutionary pressures on animals because cardiovascular regulation is associated with key physiological responses to environmental change. Heart rates, especially in ectotherms, are influenced by multiple factors over both the short and long term, including
Owen Conroy   +4 more
wiley   +1 more source

Estudio molecular e histopatológico de la infección por Citrobacter freundii y Edwardsiella tarda en reproductoras de rana toro (Rana catesbeiana)

open access: yesRevista Científica
Las enfermedades bacterianas son responsables de grandes pérdidas económicas en la acuicultura en todo el mundo, y las ranas son susceptibles a las bacterias Gram negativas causantes de la septicemia.
María Soledad Morales–Covarrubias   +6 more
doaj   +1 more source

Positive effects of nonnative invasive Phragmites australis on larval bullfrogs. [PDF]

open access: yesPLoS ONE, 2012
BACKGROUND: Nonnative Phragmites australis (common reed) is one of the most intensively researched and managed invasive plant species in the United States, yet as with many invasive species, our ability to predict, control or understand the consequences ...
Mary Alta Rogalski, David Kiernan Skelly
doaj   +1 more source

Antipredatory Strategies of Anurans: An Updated Conceptual Review

open access: yesEthology, Volume 132, Issue 9, Page 662-708, September 2026.
To unravel the evolutionary dynamics of predator–prey interactions, we propose an updated, three‐tiered classification of anuran antipredatory strategies. By mapping non‐behavioral, individual, and group defenses across five functional phases, this integrative framework introduces the concept of synergetic coupling.
Ubiratã Ferreira Souza   +3 more
wiley   +1 more source

Atividade da amilase em rã-touro durante a fase pós-metamórfica Amylase activy in the bulfrog during the post-metamorphic phase

open access: yesPesquisa Agropecuária Brasileira, 2005
O objetivo deste trabalho foi avaliar a atividade da amilase no quimo da rã-touro, Rana catesbeiana Shaw 1802 (3,6 a 200 g). Oitenta e sete animais foram distribuídos em baias-testes com temperatura e fotoperíodo controlados.
Luís Gustavo Tavares Braga   +3 more
doaj   +1 more source

Introduced bullfrog facilitates pathogen invasion in the western United States.

open access: yesPLoS ONE, 2018
Batrachochytrium dendrobatidis (Bd), a causal agent of the amphibian fungal skin disease chytridiomycosis, has been implicated in the decline and extinction of over 200 species worldwide since the 1970s.
Tiffany A Yap   +3 more
doaj   +1 more source

Avaliação de métodos de coleta de fezes para determinação da digestibilidade protéica em rã-touro (Rana catesbeiana) [PDF]

open access: yesCiência Rural, 2006
O presente trabalho teve como objetivo avaliar diferentes metodologias de coleta de fezes para determinação da digestibilidade protéica de alimentos para a rã-touro (Rana catesbeiana). As metodologias estudadas foram o método de coleta total das fezes; o
José Luiz Pedreira Mouriño   +1 more
doaj   +1 more source

Generation Length: Often Ignored and Sometimes Misunderstood

open access: yesEvolutionary Applications, Volume 19, Issue 7, July 2026.
ABSTRACT Traditional mathematical models of population genetics have generally assumed discrete generations, but most species have overlapping generations. It is necessary to estimate generation length with overlapping generations for purposes of comparison with discrete‐generation models.
Fred W. Allendorf, Nils Ryman
wiley   +1 more source

La introducción y el cultivo de la rana toro (Rana catesbeiana). ¿Un atentado a la biodiversidad de México?

open access: yesCiencia Ergo Sum, 2001
Se analiza el efecto que la introducción y el cultivo de la rana toro (Rana catesbeiana) ha tenido en el ecosistema y la biodiversidad en México. Se recomienda el cultivo de especies nativas para sustituir a la rana toro.
Gustavo Casas Andreu   +2 more
doaj  

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