Results 11 to 20 of about 80 (65)
Ultrastructural changes in the follicular epithelium ofCeratophrys cranwelliprevitellogenic oocytes
Zygote, 2007 SummaryIn this work we carried out ultrastructural, autoradiographic and biochemical analyses of the follicular epithelium duringC. cranwelliprevitellogenesis. This study revealed that the follicular epithelium in early previtellogenesis is constituted of a single layer of squamous homogeneous cells.
Villecco, E.I. +2 more
openaire +3 more sources
Zygote, 2002 In this work we carried out an ultrastructural analysis of the cell interface between oocyte and follicle cells during the oogenesis of the amphibian Ceratophrys cranwelli, which revealed a complex cell-cell interaction. In the early previtellogenic follicles, the plasma membrane of the follicle cells lies in close contact with the plasma membrane of ...
Villecco, Evelina I. +3 more
openaire +3 more sources
Canadian Journal of Zoology, 2001 Las larvas carnívoras de Ceratophrys cranwelli presentan un tubo digestivo más corto que la mayoría de las larvas de anuros, tiene 6 veces la longitud del cuerpo del renacuajo y se caracteriza también por tener un estómago larval. El presente trabajo tiene como objetivo el determinar el grado de transformaciones en la cavidad bucofaríngea y tubo ...
C.M. Schalk, L.A. Fitzgerald
openaire +2 more sources
Morphology and feeding in tadpoles of Ceratophrys cranwelli (Anura: Leptodactylidae)
Acta Zoologica, 2005 AbstractThis paper provides data on the skeleton, musculature, buccal apparatus, buccopharyngeal cavity and diet of Ceratophrys cranwelli tadpoles, and attempts to contribute to the knowledge of relations between morphology and ecology in anuran larvae.
openaire +2 more sources
Acta Zoologica, Volume 106, Issue 4, Page 485-492, October 2025.ABSTRACT Parreira. I.P. 2025. Age structure and size variation in three closely related species of casque‐headed frogs of the genus Trachycephalus (Hylidae: Lophyohylini)—Acta zoologica (Estocolmo). This study provides insights into longevity, sexual maturity and growth curves in closely related casque‐headed treefrogs distributed across distinct ...
Isabella Parreira +4 more
wiley +1 more source
Motivations behind wild animal consumption in social media in Mexico: A case study
People and Nature, Volume 6, Issue 2, Page 676-686, April 2024.Abstract Wildlife trade is a worldwide threat to biodiversity. It is a complex problem, and to deal with it, one must analyse its constituting factors, some of which are specific to certain geographic areas. Although Mexican laws have prohibited selling wild products, Mexico is still both a source and consumer of exotic wildlife; however, there is ...
Marielise Gutiérrez‐Ibarra +4 more
wiley +1 more source
Austral Ecology, Volume 49, Issue 1, January 2024.We performed a systematic review on the available literature on in situ studies of neotropical tadpole diets focusing on diet composition and its sources of variation. Such studies approached in just a few instances the effects of seasonality, developmental stage and food selectivity on diet composition, but the available data indicate none of these ...
Iara Matias Gonçalves +4 more
wiley +1 more source
Austral Ecology, Volume 49, Issue 1, January 2024.Resumo Os girinos são componentes importantes de muitas teias alimentares aquáticas, pois influenciam as populações em outros níveis tróficos e, consequentemente, a transferência de energia entre os ecossistemas aquáticos e terrestres. O que os girinos consomem é um fator chave para suas funções ecológicas. As assembleias de anuros neotropicais incluem
Iara Matias Gonçalves +4 more
wiley +1 more source
Underwater sound emission as part of an antipredator mechanism in
Acta Zoologica, 2013 AbstractWe report the emission of underwater sounds in the tadpoles of a second member of the family Ceratophryidae, Ceratophrys cranwelli. These tadpoles produce a short metallic‐like sound, which consists of short trains of pulses at Gosner stages 25, 28, and 37.
Salgado Costa, Carolina +5 more
openaire +2 more sources
[Bioacoustic of the advertisement call of Ceratophrys cranwelli (Anura: Ceratophryidae)].
Revista de biologia tropical, 2013 The advertisement call plays an important role in the life history of anuran amphibians, mainly during the breeding season. Call features represent an important character to discriminate species, and sound emissions are very effective to assure or reinforce genetic incompatibility, especially in the case of sibling species.
Julián Alonso, Valetti +2 more
openaire +1 more source