Larvae of Anisakidae Skrjabin & Karokhin, 1945 (Nematoda, Ascaridoidea) in Lophius gastrophysus Miranda-Ribeiro, 1915 (Actinopterygii, Lophiidae) from the coastal zone of the state of Rio de Janeiro, Brazil.

EnglishThe morphological and quantitative data of the larvae of Anisakidae that parasitize Lophius gastrophysus Miranda-Ribeiro, 1915 were recorded from a marine fish of commercial importance, on the coast of the Rio de Janeiro state. Thirty six specimens of L. gastrophysus were necropsied. The fishes were obtained in Cabo Frio, north coast of the state of Rio de Janeiro (23o S and 42o W) and the municipality of Rio de Janeiro, from the coast of Rio de Janeiro state (21-23° S and 41-45° W). We found five species of anisakid larvae: Anisakis type I, Terranova sp., Contracaecum sp., Hysterothylacium sp. and Raphidascaris sp. The larvae of Anisakis type I were found with prevalence (P) of 22.2% and mean abundace (MA) of 0.53 larvae per host necropsied. The third stage larvae of Terranova sp. were collected with a P=8.3% and MA=0.08. Contracaecum sp. was observed at P=8.3% and MA=0.08. Hysterothylacium sp. was observed at P=25% and MA=0.47. The larvae of Raphidascaris sp. were recorded with P=11.1% and MA=0.42. The present study is the first record of Anisakis type I, Terranova sp. and Contracaeum sp. parasitizing L. gastrophysus of the coast of the Rio de Janeiro state. portuguesO objetivo do presente trabalho e registrar e fornecer dados morfologicos e quantitativos de larvas de Anisakidae que parasitam Lophius gastrophysus Miranda-Ribeiro, 1915, uma especie de peixe marinho de importância comercial, no litoral do estado do Rio de Janeiro. Foram necropsiados 36 especimes de L. gastrophysus. Os peixes foram obtidos em entrepostos de pescados localizados no municipio de Cabo Frio, litoral norte do estado do Rio de Janeiro (23o S e 42o W) e no municipio do Rio de Janeiro, oriundos da costa maritima do estado do Rio de Janeiro, (21-23o S e 41-45o W). Foram encontradas cinco especies de larvas de nematoides Anisakidae: Anisakis Tipo I, Terranova sp., Contracaecum sp., Hysterothylacium sp. e Raphidascaris sp. As larvas de Anisakis Tipo I foram encontradas com prevalencia (P) de 22,2% e abundância media (AM) de 0,53 larvas por hospedeiro necropsiado. As larvas de terceiro estagio de Terranova sp. foram coletadas com P=8,3% e com AM=0,08. Contracaecum sp. foram observadas com P=8,3% e AM=0,08. Foi encontrado o tipo larval Hysterothylacium sp. com P=25% e AM=0,47. As larvas de Raphidascaris sp. foram registradas com P=11,1% e AM=0,42. O presente estudo e o primeiro registro da ocorrencia de Anisakis tipo I, Terranova sp. e Contracaeum sp. parasitando L. gastrophysusdo litoral do estado do Rio de Janeiro.