Results 51 to 60 of about 19,963 (235)

Higher Energy Demands and Lower Body Condition in a Hot Spring: Comparing Relict Leopard Frogs at Two Thermally Contrasting Sites

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.
ABSTRACT Following range‐wide decline, all remnant populations of the relict leopard frog (Rana onca) in the eastern Mojave Desert of the southwestern USA occupied geothermally influenced hot springs. In recent years, however, several large populations have been established at cold‐water sites.
Robert P. Pelletier, Michael D. Treat, Frank van Breukelen, Jef R. Jaeger   +3 more
wiley   +1 more source

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 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

Ranavirus risk depends on host community characteristics more than the presence of Batrachochytrium dendrobatidis

Oikos, EarlyView.
Novel parasite introductions are threatening wildlife communities globally. The degree of threat depends on the ecological context, namely host community characteristics and the presence of other parasites. How these two factors interact to shape the outcomes of parasite introductions is not known. We experimentally investigated how infection following
David R. Daversa, Andy Fenton, Lola M. Brookes, Gonçalo M. Rosa, Chris Sergeant, Trenton W. J. Garner   +5 more
wiley   +1 more source

Histopathological Evaluation of the Exposure by Cyanobacteria Cultive Containing [d-Leu1]Microcystin-LR on Lithobates catesbeianus Tadpoles

Toxins, 2018
This study evaluated the effects of [d-Leu1]Microcystin-LR variant by the exposure of Lithobates catesbeianus tadpole to unialgal culture Microcystis aeruginosa NPLJ-4 strain.
Osmindo Rodrigues Pires Júnior, Natiela Beatriz de Oliveira, Renan J. Bosque, Maria Fernanda Nice Ferreira, Veronica Morais Aurélio da Silva, Ana Carolina Martins Magalhães, Carlos José Correia de Santana, Mariana de Souza Castro   +7 more
doaj   +1 more source

The 5T Paradox of Triclosan: From Toiletries to Toxic Trash, a Growing Threat to Humanity

Environmental Toxicology, EarlyView.
ABSTRACT Triclosan (TCS) persists as a contaminant of concern in the Anthropocene, despite regulatory actions. Environmental dissemination continues through wastewater effluents, biosolid application, and improper disposal practices. This narrative review synthesizes current evidence regarding triclosan's environmental fate, transformation pathways ...
Temitope Aribigbola, Mauro Ricardo Souza da Luz, Sunday Amos Onikanni, Marjorie Dardis Murucci, Oluwatosin Stella Olayinka, Rodrigo Soares Fortunato, Rômulo Sperduto Dezonne, Omolola Esther Amos, Sara Gemini Piperni, Denise Pires de Carvalho, Leandro Miranda‐Alves   +10 more
wiley   +1 more source

Exposure to Structurally Related Organophosphate Esters Elicits Distinct Metabolomic Perturbations in Daphnia magna

Environmental Toxicology, EarlyView.
ABSTRACT Organophosphate esters (OPEs) are found ubiquitously in the environment and exposure to these chemicals has induced behavioral, developmental, and morphological impairments in several model organisms. Yet there is still a lack of understanding of how sub‐lethal exposure disrupts organism function at the molecular‐level, especially for Daphnia ...
Salwa Hajir, Sanam Yousifie, Karl J. Jobst, André J. Simpson, Myrna J. Simpson   +4 more
wiley   +1 more source

Population Responses of Wood Frog (Rana Sylvatica) Tadpoles to Overwintered Bullfrog (Rana Catesbeiana) Tadpoles [PDF]

, 2007
A fundamental goal in ecology is to understand how environmental variation influences the distribution of individuals within a population. In this study, we used laboratory experiments to examine the population responses of sympatric Wood Frog (Rana ...
Walston, Leroy J., Mullin, Stephen J.
core   +1 more source

Effects of Density and Food Availability on the Growth of Captive‐Reared Eastern Hellbenders

Zoo Biology, EarlyView.
Our experiments demonstrate that food is the major factor limiting captive‐reared Hellbender growth and that increasing rearing density to the tested levels does not negatively impact growth. Implementing these changes may result in larger, more robust Hellbenders and increase the success of reintroduction programs.
Shelby M. Royal, Summer S. Brown, Nicholas G. Burgmeier, Rod N. Williams, Jason T. Hoverman   +4 more
wiley   +1 more source

Effects of Pharmaceutical Compounds in Tadpoles

Over the past decades, the alarming rates of amphibian population decline have attracted attention to these organisms from ecotoxicological perspectives, especially using tadpoles as models.
dos Reis Martinez, Claudia Bueno, Aguiar, Aline [UNESP]   +1 more
core   +1 more source