Results 31 to 40 of about 128,532 (217)

Crescimento heterogêneo de girinos de rã-touro alimentados com diferentes rações Heterogeneous growth of bullfrog tadpoles fed with different diets

Pesquisa Agropecuária Brasileira, 2005
Este trabalho teve por objetivo avaliar o efeito de três rações experimentais com diferentes níveis protéicos (33,6%, 26,6% e 22,5%), comparadas a uma ração comercial (46,5%), no desempenho e crescimento heterogêneo de girinos de rã-touro (Rana ...
José Milton Barbosa, Adriana Maria Silveira, Catarina Abdalla Gomide   +2 more
doaj   +1 more source

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

PLoS 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

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

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

Ferritin Iron Mineralisation: Route of Fe3+ Transfer From the Ferroxidase Centre to the Inner Cavity of Human H‐Chain Ferritin

Angewandte Chemie International Edition, EarlyView.
Proposed mechanism for Fe3+ transport from the FoC (sites 1 and 2) of human H‐chain ferritin following oxidation of the di‐Fe2+ form. Glu61, aided by the flexibility of its sidechain, plays a key role in coordinating Fe3+ at three sites (3, 4 and 5) that mark out the transit route.
Zinnia Bugg, Justin M. Bradley, Andrew M. Hemmings, Nick E. Le Brun   +3 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

Competent Non‐Native Alternative Host Reduces Infection Success in a Generalist Parasite

Ecology and Evolution, Volume 16, Issue 6, June 2026.
In this study, we experimentally assessed how the addition of a non‐native alternative host affects the infection success of the larval generalist trematode, Diplostomum pseudospathaceum, in fish intermediate hosts. Our results demonstrate that the presence of alternative hosts, especially the non‐native ones, can reduce parasite transmission through ...
Markéta Ondračková, Lukáš Vetešník, Veronika Bartáková, Michal Janáč   +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

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

Environmental DNA Reveals Major Shifts in Fish and Amphibian Diversity and Distribution in Alpine Lentic Ecosystems of Southwest China, Supporting Improved Conservation and Management

Diversity and Distributions, Volume 32, Issue 6, June 2026.
ABSTRACT Aim Alpine lentic ecosystems are naturally fish‐poor or fish‐free, yet they have received numerous non‐native fish introductions globally. Studies have demonstrated that alien fish have negative impacts on aquatic organisms, particularly amphibians, which are highly susceptible to habitat alterations.
Yuanfei Wang, Haoqi Yu, Sining Huang, Liuyang He, Xiuqin Lin, Yiheng Lin, Jianping Jiang, Jianghong Ran, Tian Zhao, Feng Xie   +9 more
wiley   +1 more source

Prevalence and Mechanisms of Sustained Force Production in the Musculature of the Southern Alligator Lizard (Elgaria multicarinata)

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, Volume 345, Issue 3, Page 272-281, April 2026.
ABSTRACT The southern alligator lizard (Elgaria multicarinata) exhibits prolonged mate‐holding behavior. This behavior maybe be underpinned by a phenomenon known as sustained force, observed in the jaw muscles of this species, in which the muscle fails to relax between subsequent contractions.
Allyn Nguyen, Kyle Leong, Jessica Phan, Natalie Holt   +3 more
wiley   +1 more source