Results 11 to 20 of about 281 (133)
Revista Biodiversidad Neotropical, 2011 Life-tables are important tools for population knowledge and conservation. This study analyzes life- tables for two isolated populations of Dendrobates auratus from Costa Rica. A direct visual survey with direct capture was completed at La Suerte Biological Station in a secondary Humid Tropical Forest on the Caribbean coast and Playa Hermosa ...
José F. González-Maya +4 more
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Revista Ecuatoriana de Medicina y Ciencias Biológicas, 2017 Se analizaron y compararon las características de la neurulación, morfología interna de los embriones desde la néurula hasta la eclosión del renacuajo y el modo de miogénesis de dos especies de ranas de la familia Dendrobatidae (Hyloxalus vertebralis y Dendrobates auratus) con otras especies de la misma familia y Xenopus laevis.
Francisca Hervas Sotomayor +1 more
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Sexual selection and intra-femalecompetition in the green poison-dart frog, Dendrobates auratus [PDF]
Animal Behaviour, 1989 Observations on the mating and parental behaviour of the green poison-dart frog were used to test two hypotheses for the function of female-female competition in this species. The hypothesis that females compete to monopolize as many mates as possible was not supported because: (1) male territoriality was associated with competition for females; (2 ...
Summers, Kyle
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Pool choice in a vertical landscape: Tadpole-rearing site flexibility in phytotelm-breeding frogs. [PDF]
Ecol Evol, 2021 Certain Neotropical frogs use plant‐based pools of water as nurseries for their young. This study covers the biological and chemical factors influencing pool choice across the vertical gradient in three different species. Abstract Many species of Neotropical frogs have evolved to deposit their tadpoles in small water bodies inside plant structures ...
Fouilloux CA +7 more
europepmc +2 more sources
Analysis of morphological attributes as a driver of trade in poison dart frogs. [PDF]
Conserv BiolAbstract The unsustainable use of wildlife is a threat to biodiversity on a global scale, and the insatiable demand is driven by the attributes of the species, their parts, and derivatives. However, not all species are equally valued; certain attributes command a higher price. One example is the exotic pet trade in amphibians and reptiles.
Jaichand P, Roberts DL, Fraser IM.
europepmc +2 more sources
Patterns of infection, origins, and transmission of ranaviruses among the ectothermic vertebrates of Asia. [PDF]
Ecol Evol, 2021 Ranaviral infections are becoming frequent, severe, and widespread, causing mortality in native biodiversity and cultured species in Asia. Ranaviruses have a broad host range and are transmitted through live animal trade. Ranaviral disease is predominantly a summer disease, which may spread unhindered with global warming. The controlling of the disease
Herath J, Ellepola G, Meegaskumbura M.
europepmc +2 more sources
Centros: Revista Científica UniversitariaEl presente estudio determinó la asociación entre la densidad poblacional de Dendrobates auratus con los factores ambientales y de estructura en cinco transectos en un ecosistema de bosque tropical fragmentado en Bocas del Toro. Para ello se realizaron 25 muestreos entre los meses de marzo a julio de 2023.
Gómez , Irving N.
core +5 more sources
Structure and evolution of the sexually dimorphic integumentary swelling on the hands of dendrobatid poison frogs and their relatives (Amphibia: Anura: Dendrobatoidea). [PDF]
J Anat, 2022 The hands of adult males of many dendrobatid poison frogs and their relatives possess one or two of four types of specialized mucous glands that presumably secrete pheromones delivered to females during cephalic amplexus. The discovery of these glands adds a new dimension to studies of poison frog reproductive biology, which have investigated acoustic,
Cavalcanti IRS +3 more
europepmc +2 more sources
Discriminação de relativos em girinos canibais de Dendrobates auratus (Anura, Dendrobatidae) [PDF]
Phyllomedusa: Journal of Herpetology, 2009 Cannibalizing a related individual can reduce the inclusive fitness of the cannibal. Hence, mechanisms that allow a tadpole to recognize and modify its behavior toward kin may reduce the inclusive fitness costs of cannibalism.
Heather M. Gray +2 more
openaire +3 more sources
Expression patterns of melanin-related genes are linked to crypsis and conspicuousness in a pumpkin toadlet. [PDF]
Mol EcolAbstract Colour signals play pivotal roles in different communication systems, and the evolution of these characters has been associated with behavioural ecology, integumentary production processes and perceptual mechanisms of the species involved. Here, we present the first insight into the molecular and histological basis of skin colour polymorphism ...
Monteiro JPC +7 more
europepmc +2 more sources