Results 31 to 40 of about 1,110 (197)
Sawfishes and Other Elasmobranch Assemblages from the Mio-Pliocene of the South Caribbean (Urumaco Sequence, Northwestern Venezuela). [PDF]
PLoS ONE, 2015 The Urumaco stratigraphic sequence, western Venezuela, preserves a variety of paleoenvironments that include terrestrial, riverine, lacustrine and marine facies.
Jorge D Carrillo-Briceño +4 more
doaj +1 more source
Neotropical Ichthyology, 2021 The feeding habits of Urotrygon microphthalmum, a Critically Endangered (CR) species, were investigated through stomach contents analysis from specimens caught on bottom double rigged otter trawls in Pernambuco state, Brazil, between March of 2010 and ...
Jones Santander-Neto +3 more
doaj +1 more source
Acta Scientiarum: Biological Sciences, 2008 Potamotrygonidae constitui o único grupo recente de Chondrichthyes cujo habitat está restrito, exclusivamente, a águas continentais. Na planície de inundação do Alto rio Paraná, espécies desta família estabeleceram-se após o fechamento das comportas da ...
Antonio Guilherme Cândido da Silva +1 more
doaj +1 more source
Biota Colombiana, 2016 Entre febrero y diciembre de 2011 se estudió la comunidad de peces de la ciénaga de Paredes, a través de cuatro muestreos, en periodos climáticamente contrastantes y tres ambientes: estación 1, correspondiente a la boca de entrada del caño Peruétano (BCP)
Beatriz H. Mojica-Figueroa +1 more
doaj +3 more sources
Revista Brasileira de Parasitologia Veterinária, 2018 The helminthological examination of nine individuals of Aetobatus cf. narinari (spotted eagle ray; raya pinta; arraia pintada) revealed the presence of an undescribed species of cestode of the genus Acanthobothrium. The stingrays were collected from four
Erick Rodríguez-Ibarra +3 more
doaj +1 more source
Sexual Size Dimorphism in Rays and Skates (Elasmobranchii: Batoidea). [PDF]
Ecol EvolInterspecific trends in sexual size dimorphism are superficially similar in batoids to sharks, but are underlain by different modes of evolution. Selection for substantial SSD in batoids seems to be weaker than in sharks. This may be due to differences in the strength of fecundity selection.
Gayford JH +4 more
europepmc +2 more sources
Secondary predation constrains DNA-based diet reconstruction in two threatened shark species
Scientific Reports, 2021 Increasing fishing effort, including bycatch and discard practices, are impacting marine biodiversity, particularly among slow-to-reproduce taxa such as elasmobranchs, and specifically sharks. While some fisheries involving sharks are sustainably managed,
Mark de Bruyn +3 more
doaj +1 more source
Simplification of the enameloid microstructure of large stingrays (Chondrichthyes: Myliobatiformes): a functional approach [PDF]
Zoological Journal of the Linnean Society, 2013 Enault, Sebastien, Cappetta, Henri, Adnet, Sylvain (2013): Simplification of the enameloid microstructure of large stingrays (Chondrichthyes: Myliobatiformes): a functional approach. Zoological Journal of the Linnean Society 169 (1): 144-155, DOI: 10.1111/zoj.12059, URL: http://dx.doi.org/10.1111/zoj ...
Sebastien Enault +2 more
openaire +4 more sources
Zoological Letters, 2019 Background End-Cretaceous niche-filling by benthic Mesozoic survivors resulted in a prominent increase of durophagous fish families, resulting in the appearance of the earliest representatives of several extant fish lineages, including the pelagic ...
Giuseppe Marramà +3 more
doaj +1 more source