Results 41 to 50 of about 9,060 (167)

Habitat size changes morphological traits of Physalaemus albonotatus tadpoles

Tropical Zoology, 2019
Desiccation exposes tadpoles to a decrease in habitat size due to a reduction in water depth and surface area. We tested the effect of surface area and water depth on growth and development of tadpoles of Physalaemus albonotatus and whether habitat size
Valeria Isabel Gómez, Arturo Ignacio Kehr   +1 more
doaj  

Adaptive plasticity in anuran metamorphosis: response of tadpoles of Polypedates maculatus (Anura: Rhacophoridae) to pond drying

Phyllomedusa: Journal of Herpetology, 2023
The influence of desiccation on metamorphic traits (larval duration and size at emergence) was studied in Polypedates maculatus under laboratory conditions.
Santosh M. Mogali, Bhagyashri A. Shanbhag, Srinivas K. Saidapur   +2 more
doaj  

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

Beyond mammals: the evolution of chewing and other forms of oropharyngeal food processing in vertebrates

Biological Reviews, EarlyView.
ABSTRACT Oropharyngeal food processing exhibits a remarkable diversity among vertebrates, reflecting the evolution of specialised ‘processing centres’ associated with the mandibular, hyoid, and branchial arches. Although studies have detailed various food‐processing strategies and mechanisms across vertebrates, a coherent and comprehensive terminology ...
Daniel Schwarz, Maja Mielke, Stephan Handschuh, Anthony Herrel, Patrick Lemell, Léa Da Cunha, Nicolai Konow   +6 more
wiley   +1 more source

Whole tissue imaging of cellular boundaries at sub‐micron resolutions for deep learning cell segmentation: Applications in the analysis of epithelial bending of ectoderm

Developmental Dynamics, EarlyView.
Abstract Background To understand cellular morphology, biologists have relied on traditional optical microscopy of tissues combined with tissue clearing protocols to image structures deep within tissues. Unfortunately, these protocols often struggle to retain cell boundary markers, especially at high enough resolutions necessary for precise cell ...
Sam C. P. Norris, Jimmy K. Hu, Neil H. Shubin   +2 more
wiley   +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

Development of a Zebrafish Embryo‐Based Test System for Thyroid Hormone System Disruption: 3Rs in Ecotoxicological Research

Environmental Toxicology and Chemistry, EarlyView.
Abstract There is increasing concern regarding pollutants disrupting the vertebrate thyroid hormone (TH) system, which is crucial for development. Thus, identification of TH system–disrupting chemicals (THSDCs) is an important requirement in the Organisation for Economic Co‐operation and Development (OECD) testing framework.
Lisa Gölz, Melanie Blanc‐Legendre, Maximilian Rinderknecht, Laura Behnstedt, Sara Coordes, Luisa Reger, Sacha Sire, Xavier Cousin, Thomas Braunbeck, Lisa Baumann   +9 more
wiley   +1 more source

Cases of albinism and leucism in amphibians in Italy: new reports

Natural History Sciences, 2017
Findings of abnormally pigmented amphibian individuals provide interesting insights on intraspecific phenotypic variability as well as on variation among populations inhabiting different habitats.
Enrico Lunghi, Alessandro Monti, Arturo Binda, Ionne Piazzi, Maurizio Salvadori, Roberto Cogoni, Luigi Andrea Riefolo, Carlo Biancardi, Sergio Mezzadri, Domenico Avitabile, Gentile Francesco Ficetola, Manuela Mulargia, Salvatore Manca, Pauline Blaimont, Anna Rita Di Cerbo, Raoul Manenti   +15 more
doaj   +1 more source

Notable Impact of Paleotectonic Stress on Gold Mineralisation in the West Qinling Orogen

Geological Journal, EarlyView.
By applying fuzzy clustering and multiple inverse methods, we systematically processed the data of vein and fault slip in this ore deposit to reveal the transition of orogenic geological environment and paleotectonic stress field. Our research results show two different stress states: the northwest–southeast extensional stress field and the northeast ...
Hongyan Wang, Aibing Chen, Jian Yang, Yuan Zhang   +3 more
wiley   +1 more source

The Individual and Combined Effects of Warming and Atrazine on Lithobates pipiens Phenotypes: Implications for Frog Declines

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.
ABSTRACT Amphibians are the most threatened vertebrate class globally. Climate change, agrochemicals, and/or pathogens and parasites are implicated in contributing to amphibian declines, either singly or in combination. We investigated individual and combined effects of elevated temperatures and atrazine (2.0 μg/L) on Lithobates [formerly Rana] pipiens
Melody J. Gavel, Mark R. Forbes, Derek D. N. Smith, Julia Darabaner, Yol Monica Reyes, Zintis Stasko, David J. Carpenter, Stacey A. Robinson   +7 more
wiley   +1 more source