Results 41 to 50 of about 3,694 (192)

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

Rheotactic Responses in <i>Bufo bufo</i> Tadpoles-Insights Into Adaptation to Lotic Environment. [PDF]

Ecol Evol
Current flow is an important stimulus to which tadpoles may react differently. We assessed behaviour and orientation of common toad tadpoles in their natural habitat, in relation to water current. Tadpoles exhibited random orientation in still water and orientation against current in flowing water, suggesting adaptive behaviour to changing habitat ...
Török-Oance M, Török-Oance R.
europepmc   +2 more sources

Stress and chytridiomycosis: Exogenous exposure to corticosterone does not alter amphibian susceptibility to a fungal pathogen [PDF]

, 2014
Recent emergence and spread of the amphibian fungal pathogen, Batrachochytrium dendrobatidis (Bd) has been attributed to a number of factors, including environmental stressors that increase host susceptibility to Bd.
Anderson, Belden, Belden, Belden, Belden, Berger, Blaustein, Boyle, Carey, Chambers, Chambers, Cohn, Crawley, Crespi, Cyr, Cyr, Daszak, Daszak, Daszak, Davis, Denver, Dhabhar, Dunlap, Dunn, French, Gabor, Garcia, Gervasi, Glennemeier, Glennemeier, Glennemeier, Gosner, Haislip, Harris, Harvell, Hayes, Hayes, Hayes, Helsel, Helsel, Hopkins, Janin, Jones, Kiank, Kloas, Kostelanetz, Lam, Longcore, Marantelli, Martin, Martin, Moore, Norris, Patz, Peterson, Peterson, R Development Core Team, Ramsey, Raouf, Reeve, Ribas, Rollins-Smith, Rollins-Smith, Romero, Romero, Romero, Rosenblum, Searle, Searle, Searle, Semlitsch, Stice, Tilbrook, Venesky, Venesky, Warne, Werner, Woodhams   +77 more
core   +1 more source

Invasive North American bullfrogs transmit lethal fungus Batrachochytrium dendrobatidis infections to native amphibian host species [PDF]

, 2016
Invasive species can be a threat to native species in several ways, including transmitting lethal infections caused by the parasites they carry. However, invasive species may also be plagued by novel and lethal infections they acquire when invading ...
Dejean, T, Garner, TWJ, Gaudin, NCG, Miaud, C, Millery, A, Savard, K, Valentini, A   +6 more
core   +1 more source

Physiological response of American bullfrog tadpoles to stressor conditions of capture and hypoxia Resposta fisiológica de girinos de rã-touro americana submetidos aos mecanismos estressores de captura e hipóxia.

Pesquisa Veterinária Brasileira, 2010
The American bullfrog (Rana catesbeiana), recently named Lithobates catesbeianus is currently farmed for commercial purposes throughout various regions of Brazil.
Guilherme C Rocha, Cláudia M Ferreira, Patrícia C Teixeira, Danielle C Dias, Fernanda M França, Antonio M Antonucci, Adriana S Marcantonio, Marcelo Lauretto   +7 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

Gene expression differs in susceptible and resistant amphibians exposed to Batrachochytrium dendrobatidis. [PDF]

, 2018
Chytridiomycosis, the disease caused by the fungal pathogen Batrachochytrium dendrobatidis (Bd), has devastated global amphibian biodiversity. Nevertheless, some hosts avoid disease after Bd exposure even as others experience near-complete extirpation ...
Eskew, Evan A, Foley, Janet E, Keel, Kevin, LaDouceur, Elise EB, Miller, Michael R, Shock, Barbara C, Todd, Brian D   +6 more
core   +2 more sources

Herpetofauna Richness, Diversity, and Occurrence at the Northern Ecotone of Longleaf Pine. [PDF]

Ecol Evol
The longleaf pine ecosystem is recognized for its value in providing habitat to a variety of specialist and endemic species, especially herpetofauna; however, at the northernmost ecotone of longleaf pine (in southeastern Virginia) little is known about the denizen reptiles and amphibians.
Jones J, Bryant D, Yando E.
europepmc   +2 more sources

Primeiro estudo parasitológico em rã com garras Africano (Xenopus laevis, Anfibia) no Chile [PDF]

, 2017
Introduced species can arrive into new territories with parasites; however, these species are expected to face lower parasite richness than in their original regions. Both introduced hosts and parasites can affect native fauna.
Castillo, Cristóbal, Gonzalez, Cynthya Elizabeth, González Acuña, Daniel, Landaeta-Aqueveque, Carlos, Lobos, Gabriel, Moreno, Lucila   +5 more
core   +1 more source

Control of lung ventilation following overwintering conditions in bullfrogs,Lithobates catesbeianus [PDF]

Journal of Experimental Biology, 2016
Ranid frogs in northern latitudes survive winter at cold temperatures in aquatic habitats often completely covered by ice. Cold-submerged frogs survive aerobically for several months relying exclusively on cutaneous gas exchange while maintaining temperature-specific acid-base balance.
Joseph M. Santin, Lynn K. Hartzler
openaire   +2 more sources