Results 11 to 20 of about 416 (142)

Comparative analysis of amphibian genomes: An emerging resource for basic and applied research. [PDF]

Mol Ecol Resour
Abstract Amphibians are the most threatened group of vertebrates and are in dire need of conservation intervention to ensure their continued survival. They exhibit unique features including a high diversity of reproductive strategies, permeable and specialized skin capable of producing toxins and antimicrobial compounds, multiple genetic mechanisms of ...
Kosch TA, Crawford AJ, Crawford AJ, Lockridge Mueller R, Wollenberg Valero KC, Power ML, Rodríguez A, O'Connell LA, Young ND, Skerratt LF.   +9 more
europepmc   +2 more sources

Suction Feeding in Dendropsophus cerradensis Tadpoles: New Behavioral Observations and Morphological Traits in a Member of the D. microcephalus Group (Anura, Hylidae). [PDF]

J Morphol
The tadpole of Dendropsophus cerradensis exhibits an oral tube completely covered by external folds. The feeding behavior is characterized by an oral tube that protrudes exclusively during predation. This macrophagy feeding is associated with a buccopharyngeal cavity reduced in features, robust mandibular and hyoid musculature, as well as a modified ...
Marcondes BC, Dias PHDS, Araújo RB, de Lima GCF, Cuervo-Santos C, Oswald CB, Magalhães RF, Taboga SR, Pezzuti TL.   +8 more
europepmc   +2 more sources

Comparative Integumentary Morphology in Four Species of Pipa (Anura: Pipidae) from Colombia

Papéis Avulsos de Zoologia, 2022
As most neotropical pipids, the four species of Pipa present in Colombia are poorly understood despite their particular biology. The tegument of these New-World pipids presents particular structures which variations have been hardly analyzed.
Sebastian Enrique Perez-Rojas, Adriana Jerez   +1 more
doaj   +1 more source

Overland movement in African clawed frogs (Xenopus laevis): a systematic review [PDF]

PeerJ, 2016
African clawed frogs (Xenopus laevis) are often referred to as ‘purely aquatic’ but there are many publications which suggest extensive overland movements.
John Measey
doaj   +2 more sources

Histological and Gene Expression Analyses of the Arm and Finger Macroglands of Two Hyloxalus Frogs (Dendrobatidae). [PDF]

Mol Ecol
ABSTRACT Chemical communication during courtship is well documented in salamanders and newts, but its role in frogs is less understood. In some Neotropical poison frogs, males exhibit specialised mucous glands (SMGs) in the hand integument that express high levels of sodefrin precursor‐like factors (SPFs), an amphibian pheromone. Some species also show
Abondano Almeida D, Anganoy-Criollo M, Grant T, Klimovych S, Schulte LM.   +4 more
europepmc   +2 more sources

The Medullary Audio-Vocal Network in the Toad Bombina orientalis. [PDF]

J Comp Neurol
Hypothetical network of audio‐vocal integration of motor neurons (twin circles) and interneurons (circles) in the medulla oblongata of the toad. ABSTRACT Anurans are an established paradigm to study vocal mechanisms in vertebrates. Regarding the motor patterns, airborne vocalization of most evolutionarily old anurans (Archaeobatrachia) resembles ...
Huggenberger S, Walkowiak W.
europepmc   +2 more sources

Competition and feeding ecology in two sympatric Xenopus species (Anura: Pipidae) [PDF]

PeerJ, 2017
The widespread African clawed frog (Xenopus laevis) occurs in sympatry with the IUCN Endangered Cape platanna (Xenopus gilli) throughout its entire range in the south-western Cape, South Africa.
Solveig Vogt, F. André de Villiers, Flora Ihlow, Dennis Rödder, John Measey   +4 more
doaj   +2 more sources

Amphibia, Anura, Pipidae, Pipa pipa: distribution extension, new state record and geographic distribution map [PDF]

Check List, 2009
None
Wilian Vaz-Silva, Tiago Andrade
doaj   +3 more sources

Patterns of species richness and turnover in endemic amphibians of the Guineo‐Congolian rain forest

Diversity and Distributions, Volume 29, Issue 8, Page 1035-1051, August 2023., 2023
Abstract Aim The African Guineo‐Congolian (GC) region is a global biodiversity hotspot with high species endemism, bioclimatic heterogeneity, complex landscape features, and multiple biogeographic barriers. Bioclimatic and geographic variables influence global patterns of species richness and endemism, but their relative importance varies across taxa ...
Lotanna M. Nneji, Josué A. R. Azevedo, Oyetola O. Oyebanji, Liang Ma, Paul R. Elsen, Segun O. Oladipo, Gabriel Salako, Robert Puschendorf, Robert M. Pringle   +8 more
wiley   +1 more source

Antimicrobial, cytotoxic, and insulin‐releasing activities of the amphibian host‐defense peptide ocellatin‐3N and its L‐lysine‐substituted analogs

Journal of Peptide Science, Volume 29, Issue 4, April 2023., 2023
Substitution of Asp4 by L‐Lys ([A4K]) in the frog skin peptide ocellatin‐3N led to a 4–16‐fold increase in antimicrobial activity against both Gram‐positive and Gram‐negative bacteria and a 2.5–4‐fold increase in cytotoxic potency against human tumor‐derived cells.
J. Michael Conlon, Lauren Hunter, Samir Attoub, Bruno Casciaro, Milena Mechkarska, Yasser H. A. Abdel‐Wahab   +5 more
wiley   +1 more source