Results 1 to 10 of about 48,346 (206)

Larval Adaptation to Salinity Shock in Cane Toads (Rhinella marina) From Coastal French Guiana [PDF]

open access: yesEcology and Evolution
Many habitats not only differ in mean conditions but also in the degree to which these conditions fluctuate through time. Therefore, local adaptation to both mean abiotic conditions and habitat variability can enhance organismal viability.
Simon Ducatez   +2 more
doaj   +2 more sources

Bioaccumulation, Ecotoxicity, and Microbial Responses in Hoplobatrachus rugulosus Tadpoles Following Co-Exposure to Imidacloprid and Microplastics [PDF]

open access: yesAnimals
Agricultural organic pollutants have been identified as a key factor contributing to amphibian population decline, particularly during early developmental stages when tadpoles are frequently exposed to neonicotinoids (NEOs) and microplastics (MPs).
Xinyu Hu   +8 more
doaj   +2 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

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

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

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.
Hideki Hanada   +4 more
doaj   +1 more source

The Complex Bridge between Aquatic and Terrestrial Life: Skin Changes during Development of Amphibians

open access: yesJournal of Developmental Biology, 2023
Amphibian skin is a particularly complex organ that is primarily responsible for respiration, osmoregulation, thermoregulation, defense, water absorption, and communication.
Esra Akat Çömden   +2 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

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   +1 more source

Tadpole versus anomaly cancellation in D=4,6 compact IIB orientifolds [PDF]

open access: yes, 1999
It is often stated in the literature concerning D=4,6 compact Type IIB orientifolds that tadpole cancellation conditions i) uniquely fix the gauge group (up to Wilson lines and/or moving of branes) and ii) are equivalent to gauge anomaly cancellation. We
Aldazabal, G.   +3 more
core   +2 more sources

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