Results 1 to 10 of about 629 (159)

Review of three southwestern Indian Ocean species of Rhinobatos (Rhinopristiformes: Rhinobatidae) [PDF]

open access: yesEndangered Species Research
The shark-like rays (Rhinopristiformes) are among the most threatened species of cartilaginous fishes. The guitarfishes (Rhinobatidae) are one of 5 families in the order, with 62% of species assessed as Vulnerable or higher by the International Union for
Seret Bernard, David A Ebert
exaly   +6 more sources

Diet of the chola guitarfish, Rhinobatos percellens (Rhinobatidae), in the Paranaguá Estuarine complex [PDF]

open access: yesAnais Da Academia Brasileira De Ciencias, 2015
The chola guitarfish, Rhinobatos percellens, is one of the most-captured batoids on the Brazilian coast, and an important predator of benthic community. Stomachs from R. percellens were sampled in the Paranaguá estuarine complex (March/2006 to March/2007
Hugo Bornatowski, Elton Oliveira
exaly   +6 more sources

Feeding of guitarfish Rhinobatos percellens (Walbaum, 1972) (Elasmobranchii, Rhinobatidae), the target of artisanal fishery in Southern Brazil [PDF]

open access: yesBrazilian Journal of Oceanography, 2010
Rhinobatos percellens is one of three species of Rhinobatidae found on Brazilian shores and is one of the most abundant species on the shallow continental shelf of Paraná and Santa Catarina States.
Hugo Bornatowski
exaly   +4 more sources

Neonchocotyle violantei n. sp. (Monogenea, Hexabothriidae) from Pseudobatos lentiginosus (Rhinopristiformes, Rhinobatidae) of Yucatán, Gulf of Mexico

open access: yesBrazilian Journal of Veterinary Parasitology, 2018
Neonchocotyle violantei n. sp. (Monogenea: Hexabothriidae) infects the gill of the Atlantic guitarfish, Pseudobatos lentiginosus (Rhinopristiformes, Rhinobatidae) from littoral waters of Celestún, Yucatán, Mexico.
Griselda Pulido-Flores, Scott Monks
exaly   +4 more sources

Age and growth of Zapteryx brevirostris (Elasmobranchii: Rhinobatidae) in southern Brazil [PDF]

open access: yesNeotropical Ichthyology, 2018
Age and growth studies are fundamental to successful fisheries management. Zapteryx brevirostris (Müller & Henle, 1841) is distributed off the Brazilian continental shelf and this species is assessed as “Vulnerable” in the Red List of the International ...
Luis Fernando Favaro, Rui Coelho
exaly   +6 more sources

Population productivity of shovelnose rays: Inferring the potential for recovery. [PDF]

open access: yesPLoS ONE, 2019
There is recent evidence of widespread declines of shovelnose ray populations (Order Rhinopristiformes) in heavily fished regions. These declines, which are likely driven by high demand for their fins in Asian markets, raises concern about their risk of ...
Brooke M D'Alberto   +3 more
doaj   +2 more sources

Genetic diversity in two threatened species of guitarfish (Elasmobranchii: Rhinobatidae) from the Brazilian and Argentinian coasts: an alert for conservation

open access: yesNeotropical Ichthyology, 2021
The guitarfishes Pseudobatos horkelii and Pseudobatos percellens meet the criteria for threatened status as Critically Endangered (CR) and Endangered (EN), respectively. Both species occur in the Southern Atlantic Ocean.
Giovana Silva Ribeiro   +2 more
exaly   +3 more sources

First record of a single-clasper specimen of Pseudobatos percellens (Elasmobranchii: Rhinopristiformes: Rhinobatidae) from the Caribbean Sea, Venezuela [PDF]

open access: yesActa Ichthyologica Et Piscatoria, 2018
Documented cases of abnormalities in elasmobranchs worldwide are more often reported for sharks than their close relatives, the skates and rays. This report confirms the occurrence of a chola guitarfish, Pseudobatos percellens (Walbaum, 1792), caught off
Ehemann Nicolas Roberto
exaly   +4 more sources

Teratogenic processes in an embryo without gills and low yolk absorption of Zapteryx brevirostris (Elasmobranchii: Rhinobatidae)

open access: yesBrazilian Journal of Oceanography, 2015
This is the first report of morphological anomaly in embryos of Zapteryx brevirostris (Lesser guitarfish), a very common species in Brazil. The gills were absent, and the pectoral fins were not fully formed nor were they completely fused to the head ...
Luis Fernando Favaro
exaly   +3 more sources

Revision of the fossil batomorphs from the Cretaceous of Lebanon, and their impact on our understanding of the early step of the evolution of the clade [PDF]

open access: yesResearch & Knowledge, 2017
Lebanon is endowed with its outstanding preservation lagerstätten of fossil fish from the Upper Cretaceous. The batomorphs are represented by 16 species of Rajiformes belonging to 9 genera and 4 families however, their phylogeny remains poorly understood.
Georges Kachacha   +3 more
doaj   +1 more source

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