Results 61 to 70 of about 2,992 (213)
The current status of the Adriatic sea fish biodiversity
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
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
Imane DEROUICHE (12996114) +1 more
core +1 more source
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
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]
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]
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)
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
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
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

