Results 31 to 40 of about 1,614 (200)

Introduced bullfrogs are associated with increased Batrachochytrium dendrobatidis prevalence and reduced occurrence of Korean treefrogs. [PDF]

PLoS ONE, 2017
Bullfrogs, Lithobates catesbeianus, have been described as major vectors of the amphibian chytrid fungus, Batrachochytrium dendrobatidis (Bd). Bd is widespread throughout the range of amphibians yet varies considerably within and among populations in ...
Amaël Borzée, Tiffany A Kosch, Miyeon Kim, Yikweon Jang   +3 more
doaj   +1 more source

iTRAQ-based comparative proteomic analysis of the Lithobates catesbeianus bullfrog spleen following challenge with Citrobacter freundii

Aquaculture Reports, 2022
As a common aquaculture pathogen, Citrobacter freundii has resulted in inconceivable economic losses in aquaculture. In this study, we investigated the spleen immune response of Lithobates catesbeianus to C. freundii infection at the protein level.
Peikui Yang, Yuzhong Zheng, Jude Juventus Aweya, Xianghui Zou, Min Lin, Yaqun Liu, Zhenxia Zhang, Yanjie Sun, Hongjie Wang   +8 more
doaj   +1 more source

Investigating differences across host species and scales to explain the distribution of the amphibian pathogen Batrachochytrium dendrobatidis. [PDF]

PLoS ONE, 2014
Many pathogens infect more than one host species, and clarifying how these different hosts contribute to pathogen dynamics can facilitate the management of pathogens and can lend insight into the functioning of pathogens in ecosystems.
Anna C Peterson, Valerie J McKenzie
doaj   +1 more source

Diet of Bullfrog Tadpoles Lithobates catesbeianus, Shaw 1802, an Invasive Species from Monte Desert

, 2022
The competitive effects among tadpoles make the bullfrog a possible agent of native amphibian population declines at its introduction sites. Our aim was to analyze the dietary composition of an invasive population of Lithobates catesbeianus tadpoles and ...
Olivencia, Natalia, Ray, Andrea Maribel, Aragón Traverso, Juan, Wetten, Paula, Sanabria, Eduardo Alfredo, Quiroga, Lorena Beatriz, Rodriguez Marun, Cesar Yamil, Piñeiro Gomez, Mauricio Daniel   +7 more
core   +1 more source

Duration of spermatogenesis in the bullfrog (Lithobates catesbeianus)

Theriogenology, 2009
The bullfrog (Lithobates catesbeianus) has substantial economic importance and has also been used as an experimental model for biological studies in the fields of pharmacology, medicine, and reproductive biology, especially studies addressing gametogenesis.
Segatelli, T. M., Batlouni, S.R., Franca, L. R.   +2 more
openaire   +3 more sources

Multihost saprobes are facultative pathogens of bullfrog Lithobates catesbeianus eggs [PDF]

Diseases of Aquatic Organisms, 2012
Pathogens that infect more than one host species create complex linkages in ecological communities. We tested whether saprobes that grow on multiple host species in aquatic systems can be facultative pathogens of amphibian eggs. We isolated oomycetes from dead arthropods, vertebrates, plant leaves, and frog eggs that coexisted in a small pond. Analysis
Gregory R, Ruthig, Katie N, Provost-Javier   +1 more
openaire   +2 more sources

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

Morphological characterization of the gonads of bullfrog tadpoles (Lithobates catesbeianus) [PDF]

Journal of Morphological Sciences, 2015
Abstract Introduction: This work describes various aspects of early gonadal development of female and male in pre-metamorphic tadpoles (Lithobates catesbeianus) at Gosner stage 25. Materials and Methods: Ovaries and testicles were prepared for routine light microscopy for morphological study and for acridine orange technique fluroescent ...
Rizzi, G. M., Silva-Zacarin, E. C.M., Oliveira, C. R., Costa, M. J., Salla, R. F., Abdalla, F. C.   +5 more
openaire   +2 more sources

Immune and hormonal modulation in the postprandial period of bullfrogs (Lithobates catesbeianus)

Journal of Experimental Biology, 2021
ABSTRACT Mammals show immune up-regulation and increased plasma and local (gastrointestinal tract) concentrations of some immunoregulatory hormones, such as corticosterone and melatonin, after feeding. However, little is known about the endocrine and immune modulation in the postprandial period of ectothermic animals.
Aymam C. de Figueiredo, Stefanny C. M. Titon, João C. Cyrino, Letícia A. K. Nogueira, Fernando R. Gomes   +4 more
openaire   +2 more sources

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