Results 121 to 130 of about 67,769 (323)

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

open access: yesMolecular Ecology, Volume 34, Issue 22, November 2025.
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
Diana Abondano Almeida   +4 more
wiley   +1 more source

Un nuevo Eleutherodactylus (Anura, Leptodactylidae) de la Cordillera de Mérida, Andes de Venezuela

open access: yesGraellsia, 2004
Se describe una nueva rana del género Eleutherodactylus de la Cordillera de Mérida, Andes de Venezuela. La especie se distingue del resto de congéneres por su tamaño moderado, primer dedo de la mano igual o más corto que el segundo, palmeadura pedal ...
C. L. Barrio-Amorós, A. Chacón-Ortiz
doaj   +1 more source

Sobreposição de nicho e partilha de recursos entre cinco espécies simpátricas de bufonídeos (Anura, Bufonidae) do nordeste da Argentina [PDF]

open access: yes, 2009
The niche overlap and resource partitioning were analyzed for five sympatric bufonids from Northeastern Argentina: Rhinella schneideri, R. bergi, R. fernandezae, R. granulosa, and Melanophryniscus cupreuscapularis.
Duré Pitteri, Marta Inés   +2 more
core   +2 more sources

Meiotic behavior of two polyploid species of genus Pleurodema (Anura: Leiuperidae) from central Argentina [PDF]

open access: yes, 2014
Polyploidy is an important evolutionary force but rare in vertebrates. However, in anurans, the genus Pleurodema has polyploid species, two of them tetraploid and one octoploid.
Grenat, Pablo Raúl   +4 more
core   +2 more sources

Environmental, land cover and land use constraints on the distributional patterns of anurans: Leptodacylus species (Anura, Leptodactylidae) from Dry Chaco

open access: yesPeerJ, 2016
Subtropical dry forests are among the most vulnerable biomes to land transformation at a global scale. Among them, the Dry Chaco suffers an accelerated change due to agriculture expansion and intensification.
R. G. Medina, M. L. Ponssa, E. Aráoz
semanticscholar   +1 more source

Stomach contents from invasive American bullfrogs Rana catesbeiana (= Lithobates catesbeianus) on southern Vancouver Island, British Columbia, Canada [PDF]

open access: yes, 2013
Invasive alien American bullfrog populations are commonly identified as a pernicious influence on the survival of native species due to their adaptability, proliferation and consequent ecological impacts through competition and predation. However, it has
Jancowski, Kevin, Orchard, Stan A.
core   +2 more sources

Komposisi Jenis Katak (Anura) di Taman Nasional Gunung Palung, Kalimantan Barat

open access: yesJurnal Protobiont, 2018
The population of frogs in Gunung Palung National Park is indicating a decline due to habitat degradation and hunting. The aim of this research is to determine the species of Anura at five habitat with using Complete Species Inventories (CSI) method ...
Margie Surahman Junardi Tri Rima Setyawati
semanticscholar   +1 more source

Long term in vitro expansion of epithelial stem cells enabled by pharmacological inhibition of PAK1-ROCK-Myosin II and TGF-β signaling [PDF]

open access: yes, 2018
Summary: Despite substantial self-renewal capability in vivo, epithelial stem and progenitor cells located in various tissues expand for a few passages in vitro in feeder-free condition before they succumb to growth arrest.
Challberg, Sharon S   +7 more
core   +2 more sources

Eleutherodactylus augusti [PDF]

open access: yes, 1967
Number of Pages: 4Integrative BiologyGeological ...
Zweifel, Richard G.
core   +1 more source

Comparative cytogenetics on eight Malagasy Mantellinae (Anura, Mantellidae) and a synthesis of the karyological data on the subfamily [PDF]

open access: gold, 2022
Marcello Mezzasalma   +4 more
openalex   +1 more source

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