Feeding habits and trophic level of Himantura gerrardi (Elasmobranchii; Dasyatidae) in northern Oman Sea: effects of sex and size class [PDF]
, 2018 The feeding habits and trophic level of Himantura gerrardi were studied according to sex and size classes of 80 individuals obtained using bottom trawl between May and December 2014 from the Oman Sea.
Fatemi, S.M.R. +3 more
core
A Comprehensive Evaluation of Taxonomic Classifiers in Marine Vertebrate eDNA Studies
Molecular Ecology Resources, Volume 25, Issue 7, October 2025.ABSTRACT Environmental DNA (eDNA) metabarcoding is a widely used tool for surveying marine vertebrate biodiversity. To this end, many computational tools have been released and a plethora of bioinformatic approaches are used for eDNA‐based community composition analysis.
Philipp E. Bayer +13 more
wiley +1 more source
No evidence for population-level benefits of polyandry in sharks and rays.
PLoS ONEMating system variation refers to the spectrum between genetic monogamy and polyandry, and has important consequences for sexual conflict, sexual selection and individual fitness in animals.
Joel H Gayford +1 more
doaj +1 more source
Shark teeth from Pirabas Formation (Lower Miocene), northeastern Amazonia, Brazil [PDF]
Boletim do Museu Paraense Emílio Goeldi. Ciências Naturais, 2009 The shark fauna (Chondrichthyes: Elasmobranchii) of Pirabas Formation is one of the most representative and diversified of the Neogene of South America.
Sue Anne Regina Ferreira Costa +3 more
doaj
Características histológicas del útero de Sympterygia acuta (Garman, 1877) y Sympterygia bonapartii (Müller & Henle, 1841) (Chondrichthyes; Rajidae) [PDF]
, 2013 Los condrictios constituyen un clado sumamente conservado y vulnerable a la explotación, que ha cobrado una importancia creciente en los últimos años. Sin embargo, existe poca información sobre los aspectos morfológicos relacionados con la reproducción ...
Díaz Andrade, María Constanza +2 more
core +1 more source
Clave taxonómica del Superorden Squalomorphi de Chile (Pisces: Elasmobranchii) [PDF]
Revista de biología marina y oceanografía, 2010 espanolSe presenta una clave taxonomica para reconocer las especies chilenas de los tiburones del Superorden Squalomorphi, agrupadas en 16 familias: Hexanchidae, Chlamydoselachidae, Rhincodontidae, Pseudocarchariidae, Lamnidae, Cetorhinidae, Alopiidae, Scyliorhinidae, Triakidae, Carcharhinidae, Sphyrnidae, Dalatiidae, Centrophoridae, Squalidae ...
Sáez, Sylvia +2 more
openaire +2 more sources
Ecology and Evolution, Volume 15, Issue 9, September 2025.We find support for a benthic origin of sharks, with four discrete transitions towards pelagic‐type morphology occurring during the Jurassic and Cretaceous. Increased habitat availability driven by biotic and abiotic environmental change may have driven shifts towards pelagic‐type morphology. These results may help explain discordance between molecular
Joel H. Gayford +5 more
wiley +1 more source
PLoS ONESubclass Elasmobranchii belongs to an old evolutionary class of Chondrichthyes that diverged 450 mya, presenting a wide diversity of reproductive strategies while preserving the ancient mode of internal fertilization.
Sergii Boryshpolets +6 more
doaj +1 more source
A new species of Abdounia (Elasmobranchii, Carcharhinidae) from the base of the Boom Clay Formation (Oligocene) in northwest Belgium [PDF]
, 2007 On the basis of isolated teeth, collected from the base of the Boom Clay Formation (Rupelian, Oligocene) at the SVK clay pit (Sint-Niklaas, NW Belgium), a new species of requiem shark, Abdounia belselensis sp. nov., is described.
Mollen, F.H.
core
Growth and reproduction in captivity unveils remarkable life-history plasticity in the smallnose fanskate, Sympterygia bonapartii (Chondrichthyes: Rajiformes) [PDF]
, 2018 Analizamos el crecimiento y la reproducción de ejemplares de raya marmorada, Sympterygia bonapartii nacidas en cautiverio. Se obtuvieron ovicápsulas a partir de la oviposición de dos hembras capturadas en la naturaleza y mantenidas en el Acuario Temaikèn.
Abraham, Carolina +4 more
core +3 more sources