Results 61 to 70 of about 2,992 (213)

The current status of the Adriatic sea fish biodiversity

open access: yesFrontiers in Marine Science, 2015
The marine biodiversity of the Mediterranean Sea is nowadays facing substantial structural changes in flora and fauna. Such changes were observed in the Adriatic Sea as well.
Jakov Dulčić, Lovrenc Lipej
doaj   +1 more source

Subtropical marine reserve as key habitats for the critically endangered sand tiger shark (Carcharias taurus) in the Southwestern Atlantic

open access: yesJournal of Fish Biology, Volume 109, Issue 2, Page 1290-1296, August 2026.
Abstract This study documents the occurrence, seasonal patterns and reproductive activity of the sand tiger shark (Carcharias taurus) within a no‐take marine protected area in southeastern Brazil, using Baited Remote Underwater Video (BRUV) and diving records.
Ana Clara S. Athayde   +8 more
wiley   +1 more source

Les microhabitats d’Eudactylina similis T.scott, 1902 copépode parasite de Raja asterias Delaroche, 1809 (Elasmobranchii, Rajidae) des côtes algéroise

open access: yes, 2022
 Les microhabitats d’Eudactylina similis T.scott, 1902 copépode parasite de Raja asterias Delaroche, 1809 (Elasmobranchii, Rajidae) des côtes algéroise 
Imane DEROUICHE (12996114)   +1 more
core   +1 more source

Citizen Science for Sharks and Rays: Evaluating iNaturalist Records to Document Elasmobranch Diversity and Occurrence in the Mediterranean Sea

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 7, July 2026.
ABSTRACT Elasmobranchs in the Mediterranean Sea face intense human‐induced pressures, with nearly half of their populations at risk of extinction. Overexploitation, limited data availability, lack of international cooperation and uneven public awareness hinder effective management.
Tina Corradi   +3 more
wiley   +1 more source

Fossil freshwater fishes from the Pliocene of northern Colombia and the palaeogeography of northern South America

open access: yesPapers in Palaeontology, Volume 12, Issue 4, July/August 2026.
Abstract Freshwater fishes from the northwestern Colombian Andes are reported from the Pliocene Sincelejo and Ware formations. A total of 10 taxa have been identified, involving two orders, five families and nine genera. Characters from dental morphology, fin spines and cranial bones are provided as taxonomic tools for the study of fossil fishes.
Gustavo A. Ballen   +6 more
wiley   +1 more source

Inventarisasi Jenis Ikan Subkelas Elasmobranchii di Teluk Nuri Kecamatan Pulau Maya Kabupaten Kayong Utara [PDF]

open access: yes, 2017
Laju kepunahan Elasmobranchii semakin meningkat disebabkan aktivitas manusia dan tingginya permintaan pasar terhadap daging pari dan sirip hiu. Tujuan penelitian ini untuk mengetahui jenis – jenis Elasmobranchii yang terdapat di Teluk Nuri Kayong Utara ...
Riza Linda, Alexander Subrata, Diah Wulandari R.,
core   +1 more source

A new euselachian shark from the early Permian of the Middle Urals, Russia [PDF]

open access: yesActa Palaeontologica Polonica, 2017
The isolated teeth of a new euselachian shark Artiodus prominens Ivanov and Duffin gen. et sp. nov. have been found in the Artinskian Stage (Early Permian) of Krasnoufimskie Klyuchiki quarry (Sverdlovsk Region, Middle Urals, Russia).
Alexander O. Ivanov   +2 more
doaj   +1 more source

Myocardial trabeculation in embryos of Scyliorhinus canicula (Elasmobranchii, Chondrichthyans)

open access: yesThe FASEB Journal, 2018
Currently, three types of ventricular myoarchitecture are recognized in vertebrates, namely compact, spongy (trabeculated) and mixed myocardium. Mixed myocardium, which has been recently proposed as the primitive condition in gnathostomes, is composed of two myocardial layers: an inner trabeculated and an outer compact one.
López-Unzu, Miguel A.   +4 more
openaire   +2 more sources

Metacercarias del tipo Paramonilicaecum (Digenea: Didymozoidae), parásitos accidentales de elasmobranquios (Elasmobranchii) del golfo de México e identificación de metacercarias (Didymozoidae) de la Colección Nacional de Helmintos

open access: yesRevista Mexicana de Biodiversidad, 2011
Como parte de un estudio sobre los helmintos parásitos de rayas (Elasmobranchii), se colectaron 12 ejemplares en 3 localidades del estado de Veracruz, México: Laguna de Tamiahua, Laguna de Tampamachoco y un arrecife de la costa del golfo de México.
Erick Rodríguez-Ibarra   +2 more
doaj   +1 more source

Phylogeny of the Electric Rays of the Family Narcinidae (Gill, 1862): Systematic Review and Evidence of the Dispersal Routes to America

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 6, June 2026.
ABSTRACT The family Narcinidae has a cosmopolitan distribution; however, its systematic composition and phylogenetic position within Torpediniformes remain poorly understood. This study evaluates the evolutionary and biogeographic history of the family Narcinidae and investigates its distribution patterns using molecular systematics.
Luis Fernando da Silva Rodrigues‐Filho   +7 more
wiley   +1 more source

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