Results 51 to 60 of about 14,592 (213)

Microplastic Impacts on Seafood: A Global Synthesis of Experimental Findings

Fish and Fisheries, EarlyView.
ABSTRACT Plastic pollution is a growing global concern, with plastic and microplastic particles now widespread in aquatic environments. Microplastics are frequently ingested by marine organisms, including commercially important seafood species. Ingestion can lead to a range of biological effects, influenced by the size, type and quantity of plastic, as
Nina Wootton, Patrick Reis‐Santos, Rhiannon A. Van Eck, Isaac Duke, Bronwyn M. Gillanders   +4 more
wiley   +1 more source

Pigmentation disorders in three specimens of spiny dogfish, Squalus acanthias Linnaeus, 1758, from the Gulf of Venice, northern Adriatic Sea

Journal of Fish Biology, EarlyView.
Abstract This study reports three cases of pigmentation disorders in Squalus acanthias from the Gulf of Venice. Two specimens exhibited spotless phenotypes, whereas one exhibited hypermelanism. Morphological assessments were conducted for two individuals, alongside genetic analysis of mitochondrial genes to determine phylogeographic relationships. Both
Jacopo Bernardi, Licia Finotto, Giusy Catalano, Valentina Crobe, Alessia Cariani, Alice Ferrari   +5 more
wiley   +1 more source

Internal organs and body tissues of free-swimming whale sharks (Rhincodon typus) imaged using underwater ultrasound

Frontiers in Marine Science
Ultrasound imaging can be used as an effective tool to measure the reproductive status and condition of sharks. This usually requires restraint of the subject, which is not feasible in the wild when the target species is of conservation concern and very ...
M. G. Meekan, F. Thompson, K. Brooks, R. Matsumoto, K. Murakumo, E. Lester, A. Dove, B. Hopper   +7 more
doaj   +1 more source

Holocephali de la Formación Irati (Cuenca del Paraná), Brasil: Origen, Consideraciones Paleogeográficas y Paleoambientales

Estudios Geologicos, 2023
La Formación Irati (Pérmico, Cisuraliano) tiene varios tipos de vertebrados acuáticos, incluyendo especies de Chondrichthyes. Se reconocen dos miembros de Irati, Assistência (superior) y Taquaral (inferior).
Artur Chahud
doaj   +1 more source

Mineralization of the Callorhinchus Vertebral Column (Holocephali; Chondrichthyes) [PDF]

Frontiers in Genetics, 2020
Members of the Chondrichthyes (Elasmobranchii and Holocephali) are distinguished by their largely cartilaginous endoskeletons, which comprise an uncalcified core overlain by a mineralized layer; in the Elasmobranchii (sharks, skates, rays) most of this mineralization takes the form of calcified polygonal tiles known as tesserae. In
Pears, Jacob B., Johanson, Z., Trinajstic, Kate, Dean, M.N., Boisvert, Catherine   +4 more
openaire   +5 more sources

Unravelling the skin of the nurse shark: A morphological description of the placoid scales of Ginglymostoma cirratum

Journal of Fish Biology, EarlyView.
Abstract Ginglymostoma cirratum, commonly known as the nurse shark, is a nocturnally active benthic shark, often found in western and eastern Atlantic waters. Although this shark has been well explored in many biological aspects, few studies have thoroughly examined the morphology of its dermal denticles (or placoid scales).
Danilo P. Lima, Aline. N. Poscai, Laura F. Mianutti, Nathalie. M. R. de Abreu, Jade Medeiros, Marcus V. G. Araújo, Frederico. B. de Sousa, João Paulo C. B. da Silva   +7 more
wiley   +1 more source

Selachian faunas from the earliest Cretaceous Purbeck Group of Dorset, southern England. [PDF]

, 2002
Abundant selachian remains have been recovered from a number of horizons through the Purbeck Group at Durlston Bay, Lulworth Cove and Stair Hole in southern England.
Rees, J., Underwood, Charlie J.
core  

Resegmentation is an ancestral feature of the gnathostome vertebral skeleton [PDF]

, 2020
© The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Criswell, K. E., & Gillis, J. A.
Criswell, Katharine E., Gillis, J. Andrew   +1 more
core   +1 more source

Occurrence of multiple congenital anomalies in Potamotrygon amandae (Elasmobranchii, Potamotrygoninae) embryos, including the first report of bicephaly

Journal of Fish Biology, EarlyView.
Abstract Reports of teratogenic embryos in elasmobranchs have been documented in multiple species, with proposed aetiologies including environmental disturbances, genetic mutations, predation, exposure to endocrine‐disrupting compounds and maternal stress.
Douglas de Castro Ribeiro, Raquel Lopes Queiroz, Cristiéle da Silva Ribeiro   +2 more
wiley   +1 more source

Mesobathic chondrichthyes of the Juan Fernández seamounts: are they different from those of the central Chilean continental slope?

Revista de Biología Tropical, 2008
We compared the geographic distribution of groups of chondrychthid fishes of two physically proximal, although geographically different, regions that include the Juan Fernández seamounts and the central Chilean continental slope, both sampled at ...
Isabel Andrade, Germán Pequeño
doaj   +2 more sources