Deep-Water Sharks, Rays, and Chimaeras of Brazil

Rincon, Getulio; Mazzoleni, Rodrigo C.; OnoderaPalmeira, Ana Rita; Lessa, Rosângela

doi:10.5772/intechopen.69471

Cited by 14 publications

(24 citation statements)

References 40 publications

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“…These fisheries have operated across the entire known geographical and bathymetrical range of Hydrolagus matallansi (e.g. Perez et al., 2013), where the species was caught in fisheries and by‐catch monitoring programmes (Rincon et al., 2017). Fishing activities mostly ceased in 2006 but may return at any point in the future due to the dynamic nature of Brazilian fisheries (Alvarez Perez et al., 2009).…”

Section: Resultsmentioning

confidence: 99%

Ghosts of the deep – Biodiversity, fisheries, and extinction risk of ghost sharks

et al. 2020

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Ghost sharks (subclass Holocephali) remain a largely data‐poor group of cartilaginous fishes. The general paucity of attention may partially be related to identification and unresolved taxonomic issues, occurrence in the deep oceans, and their low value and interest in fisheries (which some notable exceptions). Here, we synthesize and assess the extinction risk of all known extant ghost sharks (52 species) by applying the IUCN Red List of Threatened Species Categories and Criteria. Ghost sharks have a low proportion of threatened (8%) and Near Threatened (8%) species, with most species (69%) assessed as Least Concern. The group still exhibits some data deficiency (15%), and biological information is lacking for most species. Endemism is high, with 37% of species known from only one location or one country. Species richness was highest in the Northeast Atlantic, off the northwest coast of Africa (Morocco to Mauritania), the East China Sea, New Zealand and off the northwest coast of South America (Ecuador and Peru). Ghost sharks are predominately taken as by‐catch, but some targeted fishing and/or retention for the liver oil trade occurs. Species‐specific reporting, monitoring and management are required to assess population trends, and further investigation is needed on trade and use, particularly for higher risk species including the sicklefin chimaeras (genus Neoharriotta) and the American Elephantfish (Callorhynchus callorhynchus, Callorhinidae).

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Section: Resultsmentioning

confidence: 99%

Ghosts of the deep – Biodiversity, fisheries, and extinction risk of ghost sharks

et al. 2020

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“…More recently, Rincon et al . () reviewed the elasmobranch by‐catch from deep‐water fisheries in Brazil based on past experimental surveys and catches from chartered fishing vessels. Although these authors provided an extensive compilation of deep‐water elasmobranchs caught by bottom longline and gillnets, otter trawls and pot traps, information regarding C. coelolepis was limited only to its occurrence in otter trawls, with no further information regarding depth, area or frequency.…”

Section: Discussionmentioning

confidence: 99%

“…Scale bar in (a) 10 cm, scale bar in (b) 5 cm. The photographs were taken and kindly provided by Sandra J. Raredon, Smithsonian Institution More recently,Rincon et al (2017) reviewed the elasmobranch bycatch from deep-water fisheries in Brazil based on past experimental surveys and catches from chartered fishing vessels. Although these authors provided an extensive compilation of deep-water elasmo-…”

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confidence: 99%

New records and range extension of the Portuguese dogfish Centroscymnus coelolepis in the south‐western Atlantic Ocean, with comments on its morphology

Mas¹,

Forselledo²,

Domingo³

et al. 2020

Journal of Fish Biology

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The Portuguese dogfish Centroscymnus coelolepis is a wide‐ranging deep‐water shark and a common by‐catch component of the catches of several mid‐ to deep‐water fisheries. In the present study, two new records from the south‐western Atlantic Ocean are reported based on specimens caught by bottom‐longline fishing vessels operating in the Argentinean–Uruguayan Common Fishing Zone. Species identification based on morphology and detailed morphometrics, as well as molecular data are presented for one of the specimens. The distribution of the species over the south‐western Atlantic is discussed on the basis of the available bibliography and a thorough revision of museum collections. The records presented here expand the species' previously acknowledged distribution southwards, from around 21° S to at least 38° S, suggesting it occurs continuously along the shelf break of eastern South America. However, given the limited access to specimens of deep‐water sharks in the region, the abundance and real extent of C. coelolepis distribution in the south‐western Atlantic as well as its interaction with deep‐water fisheries remain to be fully assessed.

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“…unnamed species of Scyliorhinus is believed to occur on the continental slopes off southern Brazil (Rincón-Filho et al 2017).…”

Section: Notes On Geographic Distributionmentioning

confidence: 99%

New distributional and morphological data of two species of catsharks, genus Scyliorhinus Blainville, 1816 (Carcharhiniformes, Scyliorhinidae), from the western South Atlantic

Lopes¹,

Fischer²,

Mazzoleni³

2020

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This study provides new distributional and morphological information for two recently described species of catsharks (Carcharhiniformes, Scyliorhinidae) from Brazil. Scyliorhinus cabofriensis Soares, Gomes & Carvalho, 2016, originally described from off Cabo Frio, state of Rio de Janeiro (536 m depth) is recorded in deeper waters (647 m) off northern Rio de Janeiro, and Scyliorhinus ugoi Soares, Gadig & Gomes, 2015, previously known from the Caribbean Sea to Rio de Janeiro (depth unknown), is reported off the state of Santa Catarina, southern Brazil, at 825 m. Morphometric data are provided for all the specimens examined.

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Deep-Water Sharks, Rays, and Chimaeras of Brazil

Cited by 14 publications

References 40 publications

Ghosts of the deep – Biodiversity, fisheries, and extinction risk of ghost sharks

Ghosts of the deep – Biodiversity, fisheries, and extinction risk of ghost sharks

New records and range extension of the Portuguese dogfish Centroscymnus coelolepis in the south‐western Atlantic Ocean, with comments on its morphology

New distributional and morphological data of two species of catsharks, genus Scyliorhinus Blainville, 1816 (Carcharhiniformes, Scyliorhinidae), from the western South Atlantic

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