Results 31 to 40 of about 99,660 (206)

Rações comerciais e o rendimento de carcaça e subprodutos de rã-touro Commercial food and the carcass yield and by-products of bullfrog

Ciência Rural, 2005
Objetivou-se avaliar o efeito do sexo e do uso de quatro rações comerciais extrusadas (R1, R2, R3 e R4) e uma ração peletizada (R5) sobre o rendimento de carcaça e aproveitamento de subprodutos da ranicultura, após 56 dias de experimentação.
Alex Poeta Casali, Onofre Maurício de Moura, Samuel Lopes Lima   +2 more
doaj   +1 more source

Integrated species distribution modeling to assess species status and current and future threats for an imperiled amphibian

Conservation Science and Practice, EarlyView.
To understand the range‐wide drivers of Arizona Toad distribution and anticipate future changes, we combined 13 datasets covering distinct portions of the range in an integrated species distribution model. We estimate that the current occupied range is 1/4–1/3 of previously defined range boundaries and that increasingly dry conditions will lead to ...
C. Lane Scher, Brian J. Tornabene, David F. Bradford, J. Tomasz Giermakowski, Caren S. Goldberg, Evan H. Campbell Grant, David A. W. Miller, Riley O. Mummah, Erin Muths, Mason J. Ryan, Brent H. Sigafus, Kenzi M. Stemp, Brian K. Sullivan, Kevin K. Wheeler, Blake R. Hossack   +14 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)

Revista 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, Blanca Alicia Ramírez–Azpilcueta, María del Carmen Bolán–Mejía, Julissa Enciso–Ibarra, Frida Stephania Silva–Alonso, Bruno Gómez–Gil, Noemí García–Aguilar   +6 more
doaj   +1 more source

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

Animal 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, Dongdong Wei, Mingzhu Liu, Ke Ke, Deqiang Shi, Bingzheng Li, Shuaishuai Huang, Jianbo Jiang, Qing Yu, Pengfei Li   +9 more
doaj   +1 more source

Spillover dynamics and asynchronous temporal fluctuations in host density and competence drive fungal parasite persistence in multi‐host, seasonal communities

Journal of Animal Ecology, Volume 95, Issue 10, Page 2104-2118, October 2026.
In this study, the authors develop a new model to show that species contributions to parasite persistence can have strong, asynchronous temporal variability, often limiting the effectiveness of targeted seasonal parasite control. The model is broadly applicable for partitioning who, when, and what drive parasite persistence in multi‐host seasonal ...
Sarah A. R. Schrock, Joseph A. DeMarchi, Billy J. Gardner, Matthew J. Gray, Michel E. B. Ohmer, Mark Q. Wilber   +5 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

Pesquisa 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, Maria Goreti de Almeida Oliveira, William Cardoso Lima, Ricardo Frederico Euclydes   +3 more
doaj   +1 more source

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

Methods in Ecology and Evolution, Volume 17, Issue 9, Page 2594-2602, September 2026.
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, Brandon Wolfsohn, Garret Peterson, Tiffany Hegdahl, Travis R. Robbins   +4 more
wiley   +1 more source

Large Bullfrog, femur of Rana catesbeiana

, 2023
SLIDE LABEL INFO: |Pre printed label: Lab. Creighton Med. Col.|Hand 1: Femur of a Large frog. Rana Catesbiana 1. C.M.C||FROM INDEX CARD:|Collection: CMC|Spec #: N/A|Species: Rana catesbeiana|Common Name: large bullfrog|Element: femur|Side: R|Notes: N/
Foote, James S., M.D.
core  

Antipredatory Strategies of Anurans: An Updated Conceptual Review

Ethology, 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, Lucas Rosado Mendonça, Carlos Jared, L. Felipe Toledo   +3 more
wiley   +1 more source

Introduced bullfrog facilitates pathogen invasion in the western United States.

PLoS 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, Michelle S Koo, Richard F Ambrose, Vance T Vredenburg   +3 more
doaj   +1 more source