Results 11 to 20 of about 384 (156)

The Impact of Food Enrichment on the Behavior of Cownose Ray (Rhinoptera bonasus) Kept under Human Care [PDF]

open access: yesJournal of Zoological and Botanical Gardens
The cownose ray (Rhinoptera bonasus) faces vulnerability primarily due to unregulated fishing, resource overexploitation, and habitat degradation.
Isabella Brosens Barros   +6 more
doaj   +3 more sources

Una especie nueva de Euzetia (Monogenea: Monocotylidae) de las branquias de Rhinoptera bonasus (Rhinopteridae) de Ciudad del Carmen, Campeche, México [PDF]

open access: yesRevista Mexicana de Biodiversidad, 2008
SE DESCRIBE EUZETIA LAMOTHEI N. SP. (MONOGENEA: EUZETIINAE), PARÁSITO DE LA BRANQUIAS DE LA MANTARRAYA RHINOPTERA BONASUS, RECOLECTADA EN CIUDAD DEL CARMEN, CAMPECHE, MÉXICO.
SCOTT MONKS, GRISELDA PULIDO FLORES
doaj   +3 more sources

Distribution extension of Glyphobothrium zwerneri Williams & Campbell, 1977 (Tetraphyllidea: Serendipeidae) from the cownose ray Rhinoptera bonasus (Mitchill, 1815) (Myliobatiformes: Myliobatidae) from Campeche, México [PDF]

open access: yesCheck List, 2014
The collection of four specimens of Glyphobothrium zwerneri extends the geographic distribution of the species from the original locality (Chesapeake Bay, Virginia, U.S.A.) to at least Ciudad del Carmen, Campeche, México, at the southern limit of the ...
Griselda Pulido-Flores, Scott Monks
doaj   +5 more sources

Aspectos da reprodução e primeiro registro de distocia em raia-ticonha (Rhinoptera bonasus) [PDF]

open access: yesBoletim do Instituto de Pesca, 2016
O registro de processos reprodutivos de elasmobrí­¢nquios são raros e pouco documentados em aquários destinados í­Â  visitação pública. O presente trabalho registra o primeiro caso de distocia em raia-ticonha (Rhinoptera bonasus), (Mitchill, 1815).
Daniela Gurgel CAVALCANTE   +4 more
doaj   +3 more sources

EVIDENCE OF DYSTOCIA IN A FREE-RANGING COWNOSE RAY Rhinoptera bonasus (ELASMOBRANCHII, RHINOPTERIDAE) [PDF]

open access: yesBoletim do Laboratório de Hidrobiologia, 2020
Capture and handling can have sublethal consequences on elasmobranchs, even when individuals are quickly released to comply with legislation or fishermen's ethics on voluntary conservation. Dystocia is characterized by the physical inability to deliver the neonate, even when it is ready for birth.
Renata Daldin Leite   +3 more
openaire   +3 more sources

Genetic variability and population structure of two sympatric cownose rays Rhinoptera (Myliobatiformes, Rhinopteridae) in the Western Atlantic Ocean [PDF]

open access: yesPeerJ
Cownose rays Rhinoptera bonasus and R. brasiliensis, are species distributed along the coastal waters from eastern United States, Gulf of Mexico to Brazil.
Paola Palacios Barreto   +5 more
doaj   +4 more sources

Protein and cholesterol electrophoresis of plasma samples from captive cownose ray ( Rhinoptera bonasus ) [PDF]

open access: yesJournal of Veterinary Diagnostic Investigation, 2015
Our study was undertaken to assess the application of semiautomated methods available at the reference laboratory level for the evaluation of plasma protein and cholesterol via electrophoresis in samples from cownose rays ( Rhinoptera bonasus). Three groups of animals were assessed: clinically normal, clinically abnormal, and parasitized with leeches ...
Carolyn, Cray   +6 more
openaire   +4 more sources

Occurrence of Rhinoptericola megacantha (CESTODA, TRYPANORHYNCHA) in new host and new location [PDF]

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2015
Relata-se a ocorrência de Rhinoptericola megacantha (Cestoda, Trypanorhyncha) parasitando duas raias da espécie Rhinoptera brasiliensis, de um total de sete espécimes analisados.
S.R. Napoleão   +3 more
doaj   +3 more sources

Cownose Ray (Rhinoptera bonasus) Predation Relative to Bivalve Ontogeny [PDF]

open access: yesJournal of Shellfish Research, 2011
ABSTRACT The purpose of this study was to determine the ability of the cownose ray, Rhinoptera bonasus (Mitchill, 1815), to manipulate oysters and clams, to test for relative prey preference, and to investigate whether susceptibility to cownose ray predation changes with bivalve ontogeny.
Robert A. Fisher   +2 more
openaire   +3 more sources

Length–weight relationships of eleven demersal ray and shark species (Elasmobranchii) from the southern Gulf of Mexico [PDF]

open access: yesActa Ichthyologica et Piscatoria
The length–weight relationships (LWR) of eleven demersal elasmobranch species captured in the southern Gulf of Mexico were estimated and assessed to provide previously absent somatometric conversion factors.
Heber Zea-de la Cruz   +4 more
doaj   +7 more sources

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