Results 1 to 10 of about 10,686 (156)

Long-term Xenopus laevis tadpole -heart-organ-culture: Physiological changes in cholinergic and adrenergic sensitivities of tadpole heart with thyroxine-treatment

open access: yesCurrent Research in Physiology, 2023
The present study clarified changes in physiological sensitivities of cultured Nieuwkoop and Faber stage 57 Xenopus laevis tadpole-organ-heart exposed to thyroxine (T4) using acetylcholine (ACh), norepinephrine (NE) and atropine.
Seigo Sanoh, Akihiko Kashiwagi
exaly   +3 more sources

Tadpoles and gauge symmetries

open access: yesJournal of High Energy Physics, 2023
The tadpole conjecture proposes that complex structure moduli stabilisation by fluxes that have low tadpole charge can be realised only at special points in moduli space, leading generically to (large) gauge symmetries.
Andreas P. Braun   +4 more
doaj   +4 more sources

Isolation, Identification, and Drug Susceptibility Testing of the Pathogen Causing Perforation Disease in Giant Spiny Frog Tadpoles (Quasipaa spinosa) [PDF]

open access: yesMicroorganisms
A pathogenic bacterium strain, LBK2, was isolated from giant spiny frog (Quasipaa spinosa) tadpoles infected with perforation disease in this study. Pathogenic strain LBK2, a Gram-negative bacterium with a certain degree of infectivity, was demonstrated ...
Qinglian Wu   +7 more
doaj   +2 more sources

The tadpole problem [PDF]

open access: yesJournal of High Energy Physics, 2021
Abstract We examine the mechanism of moduli stabilization by fluxes in the limit of a large number of moduli. We conjecture that one cannot stabilize all complex-structure moduli in F-theory at a generic point in moduli space (away from singularities) by fluxes that satisfy the bound imposed by the tadpole cancellation condition ...
Bena, Iosif   +3 more
openaire   +4 more sources

Terrestrial reproduction and parental care drive rapid evolution in the trade-off between offspring size and number across amphibians.

open access: yesPLoS Biology, 2022
The trade-off between offspring size and number is central to life history strategies. Both the evolutionary gain of parental care or more favorable habitats for offspring development are predicted to result in fewer, larger offspring.
Andrew I Furness   +2 more
doaj   +3 more sources

Polyculture of bullfrog tadpoles and Nile tilapia fry

open access: yesAnais da Academia Brasileira de Ciências, 2021
Two experiments were carried out to test better stocking proportion according to animal size for tilapia (Oreochromis niloticus) and tadpole (Lithobates catesbeianus).
CRISTIANE SARTURI   +7 more
doaj   +1 more source

Is hypoxia a stressor to American bullfrog tadpoles? [PDF]

open access: yesPesquisa Veterinária Brasileira, 2014
The aim of this study was to evaluate alterations to the physiological profile of cortisol in pro-metamorphose phase tadpoles of Lithobates catesbeianus exposed to hypoxia stressor in a capture experiment and in a crowding experiment.
Patricia C. Teixeira   +5 more
doaj   +4 more sources

Tadpole pupil [PDF]

open access: yesNeurology, 2013
Editors' Note: Dr. Egan inquires about the possibility of Tournay phenomenon in Kawasaki and Mayer's "Tadpole pupil." Dr. Charles, in reference to "Disease-modifying drugs for multiple sclerosis in pregnancy: A systematic review," suggests that it might be appropriate to continue glatiramer acetate in women trying to conceive given the lack of evidence
Robert A, Egan, Aki, Kawasaki
openaire   +5 more sources

Evaluation of the Effect of Ecological Factors on Cannibalism in Pelophylax bedriagae (Pallas, 1771) (Amphibia: Anura) [PDF]

open access: yesIranian Journal of Animal Biosystematics, 2023
Marsh frog, Pelophylax bedriagae tadpoles habituate in temporary wetlands where intraspecific aggression has been observed. In this study, we examined the independent and interactive effects of predator cues, water level and density on head width size ...
Fatemeh Amjadian   +2 more
doaj   +1 more source

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