Results 31 to 40 of about 591 (136)
Enzymatic Degumming of Ray Liver Oil Using Phospholipase A1: Efficiency, Yield and Effect on Physicochemical Parameters [PDF]
, 2017 Crude oils have components such as metals, pigments, phospholipids and waxes, which alter its physicochemical and organoleptic characteristics. These components are commonly removed during the refining process by physicochemical methods. In
Lamas, Daniela Lorena +1 more
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Using trophic modeling: evaluating fisheries discard effect on the Río de la Plata estuary and coastal shelf [PDF]
, 2022 While fishing discards and bycatch are worrisome for fisheries management, research has been mainly focused on commercial or threatened species, while the ecosystem effects were largely neglected.
Damiano, Gustavo, Lercari Bernier, Diego
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Brazilian Journal of Oceanography, 2007 A total number of 4824 Mustelus schmitti was sampled. Females ranged from 25 to 93 cm in spring and from 28 to 90 cm in summer. Males ranged from 34 to 82 and from 28 to 77 cm, respectively.
María Cristina Oddone +3 more
doaj +1 more source
Journal of Parasitology, 2002 Three species of Calliobothrium inhabit the spiral intestine of Mustelus schmitti in Argentina and Uruguay. Calliobothrium verticillatum australis is redescribed and its taxonomic status modified to species as C. australis. Calliobothrium barbarae n. sp. can be distinguished from all other species of Calliobothrium, which are small bodied, nonlaciniate,
Verónica A, Ivanov, Daniel R, Brooks
openaire +3 more sources
Foliculogénesis Ovárica en la Raya Marmorada, Sympterygia bonapartii (Müller & Henle, 1841) (Chondrichthyes, Rajidae) [PDF]
, 2011 Los Condrictios se han convertido en un recurso económico importante en las últimas décadas, siendo Argentina uno de los países que más explota tiburones y rayas, incluso a niveles que exceden los límites de varias especies.
Díaz Andrade, María Constanza +3 more
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Reproductive biology of the eyespot skate atlantoraja cyclophora (Elasmobranchii: Arhynchobatidae) an endemic species of the southwestern atlantic ocean (34ºs - 42ºS) [PDF]
, 2018 Atlantoraja cyclophora is an endemic skate to the continental shelf of the Southwestern Atlantic Ocean (22ºS-47ºS) and a bycatch species in commercial bottom trawl fisheries. The morphometric relationships, the size at maturity and the reproductive cycle
Colonello, Jorge Horacio +3 more
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Revisión de la biología reproductiva de los tiburones del género : Mustelus [PDF]
, 2021 Los tiburones son un grupo de animales importantes en los ecosistemas marinos, los cuales actúan como reguladores y como bioindicadores, por lo que se encargan de mantener el ecosistema en equilibrio y su ausencia traería consigo consecuencias graves ...
Ramos Córdoba, Luis Fernando
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Trophic ecology of Mustelus schmitti (Springer, 1939) in a nursery area of northern Patagonia
Journal of Sea Research, 2011 Abstract Mustelus schmitti is an endangered endemic shark of the southwest Atlantic, and an important economical resource in Argentina, Brazil and Uruguay. The objective of this study was to describe the trophic ecology of M. schmitti in Anegada Bay, its feeding strategy and diet composition, along with the possible dietary shifts, due to season, sex,
Molina, Juan Manuel +1 more
openaire +2 more sources
Journal of Fish Biology, EarlyView.Abstract In the context of current global change, variations in water temperature are one of the environmental conditions with serious consequences for marine life, including reproductive processes. In the small spotted catshark Scyliorhinus canicula, spermatogenesis occurs in spermatocysts composed of synchronously developing germ cells associated ...
Fabian Jeanne +4 more
wiley +1 more source
The Overlooked Threat of Global Warming on Elasmobranch Fertility
Fish and Fisheries, Volume 27, Issue 1, Page 41-55, January 2026.ABSTRACT Climate change is increasingly recognised as a critical threat to global biodiversity, yet its impacts on reproductive processes remain poorly understood in many marine taxa. Elasmobranchs (sharks, skates and rays) represent a particularly vulnerable group due to their peculiar life histories, low fecundity, and diverse reproductive modes.
Noémie Coulon +3 more
wiley +1 more source