Results 31 to 40 of about 652 (146)

Antimicrobial peptides in frog poisons constitute a molecular toxin delivery system against predators [PDF]

open access: yes, 2017
Animals using toxic peptides and proteins for predation or defense typically depend on specialized morphological structures, like fangs, spines, or a stinger, for effective intoxication.
Ballet, Steven   +12 more
core   +1 more source

Species composition, habitat use and breeding seasons of anurans of the restinga forest of the Estação Ecológica Juréia-Itatins, Southeastern Brazil [PDF]

open access: yes, 2009
Apresentamos aqui dados sobre a composição de espécies, o uso de hábitat e as estações reprodutivas dos anuros da floresta de restinga da Estação Ecológica Juréia-Itatins, sudeste do Brasil.
BERTOLUCI, Jaime   +2 more
core   +1 more source

Developmental changes and novelties in ceratophryid frogs [PDF]

open access: yes, 2016
The Neotropical frog genera Ceratophrys, Chacophrys and Lepidobatrachus form the monophyletic family Ceratophryidae. Although in- and out-group relationships are not fully resolved, the monophyly of the three genera is well supported by both ...
Chuliver Pereyra, Mariana   +5 more
core   +3 more sources

Intercalary Elements, Treefrogs, and the Early Differentiation of a Complex System in the Neobatrachia

open access: yesThe Anatomical Record, 2007
AbstractIntercalary elements are additional skeletal structures of digits of many anuran amphibians. Twelve terminal clades in the neobatrachian lineage of frogs have intercalary elements revealing it is a homoplastic character with five to seven gains and two to four losses along a consensus phylogeny of the Neobatrachia.
Manzano, Adriana Silvina   +2 more
openaire   +3 more sources

Ecomorphology of the pectoral girdle in anurans (Amphibia, Anura): Shape diversity and biomechanical considerations

open access: yesEcology and Evolution, Volume 10, Issue 20, Page 11467-11487, October 2020., 2020
The relationships between locomotor behavior, shape, and function of the anuran pectoral girdle were investigated. Adaptation to burrowing behavior was observed and could be explained by biomechanical requirements. Other locomotor groups showed minor or no shape differences; large shape diversity within those groups indicated many‐to‐one mapping of ...
Karolin Engelkes   +5 more
wiley   +1 more source

Three New Ranidae Mitogenomes and the Evolution of Mitochondrial Gene Rearrangements among Ranidae Species [PDF]

open access: yes, 2018
Various types of gene rearrangements have been discovered in the mitogenoes of the frog family Ranidae. In this study, we determined the complete mitogenome sequence of three Rana frogs.
Biao LI   +5 more
core   +1 more source

A REVISION OF ODONTOPHRYNUS BARRIOI (ANURA: NEOBATRACHIA): MORPHOLOGY, OSTEOLOGY, VOCALIZATIONS, AND GEOGRAPHIC DISTRIBUTION

open access: yesSouth American Journal of Herpetology, 2007
The present paper provides diagnostic characters from external morphology and osteology that reinforce the specific recognition of the frog Odontophrynus barrioi, describes its advertisement and encounter calls, and extends its distribution range. Odontophrynus barrioi is distinguished from all other species of the genus principally by the large size ...
Rosset, Sergio Daniel   +3 more
openaire   +2 more sources

Complete mitochondrial genome sequence of the high-altitude Brazilian tree frog Bokermannohyla alvarengai (Anura, Hylidae)

open access: yesMitochondrial DNA. Part B. Resources, 2017
The first complete mitochondrial genome (mtDNA) for the genus Bokermannohyla (Hylidae) is presented. The mtDNA contains 17,325 bp and is similar in size, gene content, and gene location to other hylid mitochondrial genomes described, with 2 rRNA, 22 tRNA,
Nathália Gonçalves da Silva Lima   +5 more
doaj   +1 more source

Exceptional Enlargement of the Mitochondrial Genome Results from Distinct Causes in Different Rain Frogs (Anura: Brevicipitidae: Breviceps)

open access: yesInternational Journal of Genomics, Volume 2020, Issue 1, 2020., 2020
The mitochondrial (mt) genome of the bushveld rain frog (Breviceps adspersus, Brevicipitidae, Afrobatrachia) is the largest (28.8 kbp) among the vertebrates investigated to date. The major cause of genome size enlargement in this species is the duplication of multiple genomic regions.
Keitaro Hemmi   +7 more
wiley   +1 more source

Independent Evolution of Suction Feeding in Neobatrachia: Feeding Mechanisms in Two Species of Telmatobius (Anura:Telmatobiidae) [PDF]

open access: yesThe Anatomical Record, 2015
ABSTRACTThe most common feeding mechanism among aquatic vertebrates as fishes, turtles, and salamanders is inertial suction. However, among the more than 6,400 species of anurans, suction feeding occurs only in pipids. Pipidae is a small basal lineage relative to Neobatrachia, an enormous clade that contains about 96% of extant anurans.
openaire   +3 more sources

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