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Mostrando ítems 11-20 de 197
Abundance, size and population structure of whitetip reef sharks, Triaenodon obesus (Carcharhiniformes: Carcharhinidae), in Bahia Chatham, Parque Nacional Isla del Coco, Costa Rica.
(Universidad Nacional, Costa Rica, 2012)
Approximately 12 species of shark inhabit at Coco Island National Park (PNIC); some are migratory, such as the hammerhead shark (Sphyrna lewini) and whale shark (Rincodon typus), and others are resident, like the whitetip ...
Variación espacial y temporal de la composición por tallas y sexos del gatuso Mustelus schmitti Springer, 1939 capturado por la pesca de arrastre en la costa oceánica uruguaya durante 2004
(Universidad de Valparaíso. Facultad de Ciencias del Mar, 2008)
A record of the Porbeagle, Lamna nasus, in coastal waters of Buenos Aires (Argentina) confirmed by DNA barcoding
(De Gruyter, 2015-11)
A record of a juvenile Porbeagle, Lamna nasus, in the coastal waters of Argentina is confirmed by DNA barcoding, since the specimen lacked some external diagnostic features. We discuss the occurrence of this species in the ...
First report of synophthalmia and leucism in a bull shark (Carcharhinus leucas) embryo from the southeastern Gulf of Mexico
(Pontificia Universidad Católica de Valparaíso, 2022)
First report of predation by a small shark on the invasive rapa whelk Rapana venosa (Valenciennes, 1846) in Argentinean waters
(Regional Euro-Asian Biological Invasions Centre, 2016-06)
The rapa whelk Rapana venosa (Valenciennes, 1846) has few predators in areas outside of its native range. Here we report the first incidence of predation by a small shark Mustelus schmitti Springer, 1939 on the rapa whelk ...
Diversity and genetic population structure of the Brazilian sharpnose shark Rhizoprionodon lalandii
(2013-03-07)
Similar to many small, range-restricted elasmobranchs, the Brazilian sharpnose shark (Rhizoprionodon lalandii) is listed as 'data deficient' by the International Union for the Conservation of Nature (IUCN). Data on stock ...
Diversity and genetic population structure of the Brazilian sharpnose shark Rhizoprionodon lalandii
(2013-03-07)
Similar to many small, range-restricted elasmobranchs, the Brazilian sharpnose shark (Rhizoprionodon lalandii) is listed as 'data deficient' by the International Union for the Conservation of Nature (IUCN). Data on stock ...
Seasonal occurrences of Manta birostris (Chondrichthyes: Mobulidae) in southeastern Brazil
(Springer TokyoTokyoJapão, 2009)
Coastal sharks and rays in a marine protected area in southern Brazil
(2021-01-01)
In southern Brazil, we investigated shark and ray capture records in an integral protection marine protection area (MPA) that allows fishing in that area. We found 10 shark and nine ray species, of which 88.5% and 66.2%, ...
A new map of the tiger shark (Galeocerdo cuvier) genetic population structure in the western Atlantic Ocean: Hypothesis of an equatorial convergence centre
(2019-05-01)
The tiger shark (Galeocerdo cuvier) is a common widespread coastal–pelagic shark species whose population genetic structure has only recently been the object of genetic studies. In this study, the tiger's shark mitochondrial ...