Abstract
ABSTRACT The occurrence of hyperostotic bones is common in marine fish, especially in the Carangidae family, despite few records of this condition in fishes from Brazilian waters. The present study describes the occurrence of hyperostosis in Atlantic moonfish (Selene setapinnis) in, Rio de Janeiro State, Brazil. Radiographs of the fish specimens were taken and all of them presented hyperostosis in at least three different regions: cleithrum, pterygiophores and pleural ribs. The observed pattern is different from previously described for other species of the same genus. It is the first record for the species and a valuable contribution to the study of bone diseases in fishes from the Brazilian coast.
Highlights
The increase of periosteal osteogenesis that modifies normal bone morphology is defined as hyperostosis (Meunier et al, 2010)
Lima et al (2002) reported the high incidence of hyperostosis in individuals of cutlass fish Trichiurus lepturus (Linnaeus, 1758) as osteoma, a usual type of tumor described in fishes
The present study reports the occurrence of hyperostosis in specimens of Selene setapinnis (Mitchill, 1815)
Summary
The increase of periosteal osteogenesis that modifies normal bone morphology is defined as hyperostosis (Meunier et al, 2010) This condition causes bone thickening and swollen shape (Olsen, 1971; Desse et al, 1981; Meunier and Desse, 1986; Gauldie and Czochanska, 1990; Smith-Vaniz et al, 1995). Several families of marine teleost fishes are often described with the condition, the etiology and implications remain unclear Different hypothesis about this disorder have been proposed. Even though a clear taxonomic pattern does not seem to exist, some studies demonstrate a high prevalence of hyperostosis in individuals from the Carangidae family (Smith-Vaniz et al, 1995; Béarez, 1997; Chanet, 2018), a family with several species of commercial importance in the southeast-south of the Brazilian coast (Report..., 2018). This is the first case reported for hyperostosis in this species and one of the few cases reported in Brazilian waters
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