Results 41 to 50 of about 10,355 (218)

Validation of aerial photogrammetry methods to measure body size, condition and mass in small cetaceans

The Journal of Physiology, EarlyView.
Abstract figure legend Unoccupied aerial vehicle (UAV)‐based photogrammetry provides measurements equivalent to traditional hand measurements in bottlenose dolphins. Mass estimates derived from UAV measurements closely match the true body mass of live individuals.
Riccardo Cicciarella, Erik P. Willems, Benjamin Markham, Manuela R. Bizzozzero, Wayne Phillips, Simon J. Allen, Michael Krützen, Fredrik Christiansen   +7 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

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

Long‐term impacts of the invasive frog Polypedates megacephalus on Taiwan's native frogs: A 16‐year community science study

Conservation Science and Practice, Volume 8, Issue 2, February 2026.
Using 16 years of community science data from Taiwan, this study found that habitat specialists and species overlapping ecologically with the invasive frog Polypedates megacephalus declined more than generalists. While declines were higher at sites with P.
Yung‐Chih Lai, Cheng‐En Li, Wei‐Chun Cheng, Yi‐Ju Yang   +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

Snake (Colubridae: Thamnophis) Predatory Responses to Chemical Cues from Native and Introduced Prey Species [PDF]

, 2004
Several aquatic vertebrates have been introduced into freshwater systems in California over the past 100 years. Some populations of the two-striped garter snake (Thamnophis hammondii) have lived in sympatry with these species since their introduction ...
Ervin, Edward L., Fish, Jennifer M., Fisher, Robert N., Imbert, Hélène, Mullin, Stephen J.   +4 more
core   +2 more sources

Parallel Morphological and Functional Development in the Xenopus Retinotectal System

Developmental Neurobiology, Volume 86, Issue 1, January 2026.
ABSTRACT The retinotectal projection in Xenopus laevis is topographically organized. During the early development of the Xenopus visual system, the optic tectum increases considerably in volume, and retinotectal axons and dendrites undergo extensive activity‐dependent remodeling.
Vanessa J. Li, David Foubert, Anne Schohl, Edward S. Ruthazer   +3 more
wiley   +1 more source

Flexibility within the middle ears of vertebrates [PDF]

, 2012
Introduction and aims: Tympanic middle ears have evolved multiple times independently among vertebrates, and share common features. We review flexibility within tympanic middle ears and consider its physiological and clinical implications.
Baird, Bell, Burda, Dahmann, Feenstra, Fleischer, Goode, Goode, Ingelstedt, Jørgensen, Kirikae, Kobrak, Larsen, Lenhardt, M J Mason, M R B Farr, Manley, Marquet, Mason, Mason, Mason, Mason, Mills, Narins, Nishihara, Pau, Rosowski, Schuknecht, Segall, Smith, Tideholm, Werner, Wever, Wever, Wever, Yamada, Özcan   +36 more
core   +1 more source

Monitoring the Prevalence and Distribution of Chytrid Fungus (Batrachochytrium dendrobatidis) in the Kihansi Spray Toad (Nectophrynoides asperginis) Population in the Kihansi Gorge Spray Wetlands, Tanzania

Ecology and Evolution, Volume 16, Issue 1, January 2026.
How to manage the continued impact of Chytrid fungus on Kihansi Spray Toad population in the wild. ABSTRACT Chytridiomycosis, caused by the fungus Batrachochytrium dendrobatidis (Bd), is fatal to some amphibian species, whereas others can carry the pathogen without developing disease.
Devolent T. Mtui, Leonard J. Haule, Joseph O. Ogutu, Asa Preston, Josephine Braun, William D. Newmark, Edward M. Kohi, Juma Kimera, Mikidadi Mtalika, Hussein Adam, Samueli Mtoka, Felix Shayo, Julius D. Keyyu, Mariam R. Makange, Jean N. Hakizimana, Gerald Misinzo, Eblate E. Mjingo   +16 more
wiley   +1 more source

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

Ciência 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, Marta Verardino De Stéfani   +1 more
doaj   +1 more source