Results 21 to 30 of about 42,376 (222)

Effects of light and group size on the activity of wood frog tadpoles (Rana sylvatica) and their response to a shadow stimulus

Acta Herpetologica, 2009
Tadpoles are known to behaviorally respond to cues from aquatic predators. However, there are several additional factors that might affect tadpole behavior.
Katherine V. McClure, Jordan W. Mora, Geoffrey R. Smith   +2 more
doaj   +1 more source

Radiative Symmetry Breaking on D-branes at Non-supersymmetric Singularities [PDF]

, 2006
The possibility of radiative gauge symmetry breaking on D3-branes at non-supersymmetric orbifold singularities is examined. As an example, a simple model of D3-branes at non-supersymmetric C^3/Z_6 singularity with some D7-branes for the cancellations of ...
Adams, Aldazabal, Angelantonj, Angelantonj, Antoniadis, Antoniadis, Antoniadis, Antoniadis, Antoniadis, Antoniadis, Blumenhagen, Das, Dudas, Fischler, Fischler, Font, Green, Kokorelis, Noriaki Kitazawa, Sagnotti, Sagnotti   +20 more
core   +2 more sources

Anuran tadpoles inhabiting a fluoride-rich stream: diets and morphological indicators

Heliyon, 2019
We in situ assessed the influence of natural fluoride concentrations in lotic freshwater ecosystems on diet and morphology of Boana cordobae tadpoles. Two streams were sampled in Argentina: Los Vallecitos stream (LF-LV) and Los Cerros Negros stream (HF ...
Favio E. Pollo, Luciana Cibils-Martina, Manuel A. Otero, Mariana Baraquet, Pablo R. Grenat, Nancy E. Salas, Adolfo L. Martino   +6 more
doaj   +1 more source

A class of non-supersymmetric orientifolds [PDF]

, 2006
We study type IIB orientifolds on T^{2d}/Z_N with supersymmetry broken by the compactification. We determine tadpole cancellation conditions including anti-branes and considering different actions for the parity Omega.
A. Font, A. Sagnotti, A.M. Uranga, Anamaría Font, C. Angelantonj, G. Aldazabal, G. Aldazabal, G. Aldazabal, J. Polchinski, J.F.G. Cascales, J.H. Schwarz, José Antonio López, L.F. Alday, P. Anastasopoulos, R. Rabadán   +14 more
core   +2 more sources

New insights in gill/buccal rhythm spiking activity and CO2 sensitivity in pre- and post-metamorphic tadpoles (Pelophylax ridibundus)

, 2013
Central CO2chemosensitivity is crucial for all air-breathing vertebrates and raises the question of itsrole in ventilatory rhythmogenesis. In this study, neurograms of ventilatory motor outputs recorded infacial nerve of premetamorphic and ...
Fiamma, Marie-Noëlle, Horcholle-Bossavit, Ginette, Quenet, Brigitte, Rivals, Isabelle, Similowski, Thomas, Straus, Christian   +5 more
core   +3 more sources

Bilateral tadpole pupils [PDF]

Neurology, 2016
A 19-year-old man with congenital erythropoietic protoporphyria and without family history or prior migraine attacks had recurrent seizures, which were controlled on propofol. Eye examination performed while awake revealed nonreacting bilateral tadpole pupils (TPs) (figure), without other neurologic deficits.
Rajan, Vijayaraghavan, Cyriac Abby, Philips, Shakti Prasad, Choudhury   +2 more
openaire   +2 more sources

Effects of mosquitofish (Gambusia affinis) cues on wood frog (Lithobates sylvaticus) tadpole activity

Acta Herpetologica, 2011
We examined the changes in activity of wood frog (Lithobates sylvaticus) tadpoles exposed to combinations of visual, chemical, and mechanical cues of the invasive mosquitofish (Gambusia affinis).
Katherine F. Buttermore, Paige N. Litkenhaus, Danielle C. Torpey, Geoffrey R. Smith, Jessica E. Rettig   +4 more
doaj   +1 more source

Strigea robusta causes polydactyly and severe forms of Rostand’s anomaly P in water frogs

Parasites & Vectors, 2020
Background Cases of polydactyly in natural populations of amphibians have attracted great interest from biologists. At the end of the 1940s, the French biologist Jean Rostand discovered a polymorphic syndrome in some water frog (Anura: Pelophylax ...
Anton O. Svinin, Ivan V. Bashinskiy, Spartak N. Litvinchuk, Oleg A. Ermakov, Alexander Yu. Ivanov, Leonid A. Neymark, Aleksander A. Vedernikov, Vitalij V. Osipov, Galina P. Drobot, Alain Dubois   +9 more
doaj   +1 more source

Survey of mercury in boreal chorus frog (Pseudacris maculata) and wood frog (Rana sylvatica) tadpoles from wetland ponds in the Prairie Pothole Region of Canada

FACETS, 2017
Tadpoles are important prey items for many aquatic organisms and often represent the largest vertebrate biomass in many fishless wetland ecosystems. Neurotoxic mercury (Hg) can, at elevated levels, decrease growth, lower survival, and cause developmental
Stacy A. Boczulak, Mark C. Vanderwel, Britt D. Hall   +2 more
doaj   +1 more source

Adaptive significance of the transparent body in the tadpoles of ornamented pygmy frog, Microhyla ornata (Anura, Amphibia)

Acta Herpetologica, 2020
In Southern India, during the Southwest monsoon phase, the newly formed ephemeral water bodies harbour several species of tadpoles as well as some of their predators. Tadpoles of Microhyla ornata dwell in surface or column zones of water.
Santosh M. Mogali, Bhagyashri A. Shanbhag, Srinivas K. Saidapur   +2 more
doaj   +1 more source