Nematode larvae infecting Priacanthus arenatus Cuvier, 1829 (Pisces: Teleostei) in Brazil

Abstract

From July to December, 2013, thirty Priacanthus arenatus specimens commercialized in the cities of Niterói and Rio de Janeiro, State of Rio de Janeiro, were acquired. The fish were necropsied and filleted to investigate the presence of nematode larvae. Twenty fish (66.7%) out of the total were parasitized by nematode larvae. A total of 2024 larvae were collected; among them, 30 third-instar larvae of Anisakis sp. showed prevalence (P) = 20%, mean abundance (MA) = 1, and the mean intensity (MI) = 5, and infection sites (IS) = caecum, stomach, liver, and mesentery; and 1,994 third-instar larvae (1,757 encysted and 237 free) of Hysterothylacium deardorffoverstreetorum with P = 66.7%, MA = 66.5, and MI = 99.7, and IS = spleen, caecum, stomach, liver, mesentery, and abdominal muscle. This is the first study to report H. deardorffoverstreetorum and Anisakis sp. larvae parasitizing P. arenatus.

Larvas de nematoides e cestoides de importí­¢ncia higiênico-sanitária em Lopholatilus villarii (Actinopterygii) no Estado do Rio de Janeiro, Brasil

“…The majority of H. deardorffoverstreetorum were collected from the interior of small granulomas, as was also observed by FELIZARDO et al (2009) andKURAIEM et al (2016).…”

“…The specimens of H. deardorffoverstreetorum (L 3 ) found in L. villarii exhibited similar morphological and morphometric features to the specimens from P. isosceles, P. patagonicus, X. rasile, C. guatucupa, Chaetodipterus faber (Broussonet, 1782), Trachinotus carolinus (Linnaeus, 1766), and Priacanthus arenatus Cuvier, 1829, all hosts collected from the state of Rio de Janeiro FONTENELLE et al 2013;RIBEIRO et al 2014;KURAIEM et al 2016;FONSECA et al 2016).…”

“…Its indices were slightly lower than those for Anisakis type I from L. gastrophysus (SAAD et al, 2012); Anisakis sp. from P. arenatus (KURAIEM et al, 2016); A. typica from Trichuris lepturus (Linnaeus, 1758) (BORGES et al, 2012) and X. rasile (FONSECA et al, 2016).…”

“…Additionally, the range of infection was more than one and half to four times higher than those of Hysterothylacium sp. from Trachinotus carolinus (Linnaeus, 1766) and Chaetodipterus faber (Broussonet, 1782) (RIBEIRO et al, 2014) and T. lepturus (BORGES et al, 2012); and as high as those H. deardorffovestreetorum from P. isosceles (FELIZARDO et al, 2009), C. guatucupa (FONTENELLE et al, 2013, P. arenatus (KURAIEM et al, 2016), P. patagonicus and X. rasile (FONSECA et al, 2016).…”

“…The nematodes of the families Anisakidae and Raphidascarididae have been reported parasitizing several Brazilian marine fish in studies on classical and molecular taxonomy, ecology and hygiene and health, since the larvae migrate after the death of the hosts (FELIZARDO et al, 2009;DIAS et al, 2010DIAS et al, ,2011KNOFF et al, ,2013FONTENELLE et al, 2013FONTENELLE et al, ,2015RIBEIRO et al, 2014;PANTOJA et al, 2015;KURAIEM et al, 2016;FONSECA et al, 2016). Human infections with these nematodes have been reported in Europe (Netherlands, Spain, France, Italy, Belgium, Denmark, England and Germany), in the Americas (United States of America, Chile, Peru and Brazil), in Korea and, especially, in Japan, where more than 2,000 cases occur annually (ADAMS et al, 1997;AUDICANA et al, 2002;ACHA and SZYFRES, 2003;CHAI et al, 2005;CRUZ et al, 2010;D'AMICO et al, 2014).…”