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Occurrence of Metacaligus rufus (Wilson, 1908) (Copepoda, Caligidae) parasitizing the cownose ray Rhinoptera bonasus (Mitchill, 1815) (Elasmobranchii, Myliobatidae) in Brazil

Ducatti, R; Takatsuka, V; G. Azevedo, V; G. Sanches, E; Paschoal, F; L. Luque, J.
Braz. J. Biol.; 78(3): 597-599, 2018. ilus
Artigo em Inglês | VETINDEX-Express | ID: vti-18081


The family Caligidae are predominantly external parasites of fishes, inhabiting the outer surface, the mouth, the gills and opercular cavity of their hosts (Boxshall and Halsey, 2004). This family comprises one of the most speciose group within the Copepoda, currently encompassing 31 genera, including Metacaligus (Thomsen, 1949) which consistis of five nominal species (Walter and Boxshall, 2008). Members of Metacaligus have been associated with actinopterygian fishes or obtained from plankton, particularly from American and Asian waters (Ho and Bashirullah, 1977; Suárez-Morales et al., 2012). In the seaboard of Brazil, two species have been hitherto recorded, i.e., Metacaligus rufus (Wilson, 1908) from the gills of Merluccius sp., Oligoplites palometa (Cuvier, 1832), O. saliens (Bloch, 1793), Scomberomorus sp., Selene vomer (Linnaeus, 1758), Trichiurus lepturus (Linnaeus, 1758) and Umbrina sp.; and M. trichiuri (Krøyer, 1863) from the gills of T. lepturus (Luque and Tavares, 2007; Luque et al., 2013). The Cownose ray Rhinoptera bonasus (Mitchill, 1815) (Myliobatidae) is an oceanic species found occasionally in sandy bottoms near the coast, feeding a variety number of bivalve mollusks and other benthic prey (Figueiredo, 1977; Froese and Pauly, 2016). This species is widely distributed in the Atlantic Ocean, found in the Western Atlantic: northern Florida (USA), throughout the Gulf of Mexico to south Brazil; and in the Eastern Atlantic: Mauritania, Senegal and Guinea (Froese and Pauly, 2016). Among the species of genus Rhinoptera, The International Union for Conservation of Nature (IUCN) listed this species as Near Threatened (NT) in relation to the state of conservation (Froese and Pauly, 2016; International Union for Conservation of Nature and Natural Resources, 2016).(AU)
Biblioteca responsável: BR68.1
Localização: BR68.1