title: Histopathologic aspects in Plagioscion squamosissimus (HECKEL, 1940) induced by Neoechinorhynchus veropesoi, metacestodes and anisakidae juveniles.
abstract: Plagioscion squamosissimus (Heckel 1840), a fish endemic to the Amazon Basin and commonly known as the "silver croaker", plays an important role in the ecology and economy of Pará State, Brazil. Knowledge of host-parasite relationships is important to understanding the role of parasites in the control of natural host populations. This work describes histopathological aspects caused by several common intestinal parasites found during a helminthological survey of fish in northern Brazil. We observed a high prevalence of helminth infection, especially by J3 nematode juveniles of the family Anisakidae and metacestodes of the family Protocephalidae (both with 100% prevalence). An external capsule surrounded each juvenile with numerous juveniles inside sac-like structures formed of connective tissue. Inflammation was observed to be caused by infection of metacestodes, reaching the intestinal muscularis mucosa. Neoechinorhynchus veropesoi (38% prevalence) was found in the small intestine of P. squamosissimus, invading the mucosa, submucosa, and internal muscularis of the intestine causing intense inflammation. Histopathology of host-parasite relationships in fish has been rare, and the pathology of parasites in P. squamosissimus is described herein.
authors: CAPES Foundation, Ministry of Education of Brazil, Brasília, DF, Brazil.
authors: Francisco Tiago de Vasconcelos
authors: FT
authors: Melo
authors: Laboratório de Histologia e Embriologia Animal, Instituto de Saúde e Produção Animal, Universidade Federal Rural da Amazônia ? UFRA, Montese, Belém, PA, Brasil.
authors: Rogério Antonio Ribeiro
authors: RA
authors: Rodrigues
authors: Laboratório de Biologia Celular e Helmintologia ?Profa. Dra. Reinalda Marisa Lanfredi?, Instituto de Ciências Biológicas, Universidade Federal do Pará ? UFPA, Belém, PA, Brasil.
authors: Elane Guerreiro
authors: EG
authors: Giese
authors: The Harold W. Manter Laboratory of Parasitology, W-529 Nebraska Hall, University of Nebraska State Museum and School of Biological Sciences University of Nebraska - Lincoln, Lincoln, Nebraska, USA.
authors: Scott Lyell
authors: SL
authors: Gardner
authors: Laboratório de Biologia Celular e Helmintologia ?Profa. Dra. Reinalda Marisa Lanfredi?, Instituto de Ciências Biológicas, Universidade Federal do Pará ? UFPA, Belém, PA, Brasil.
authors: Jeannie Nascimento dos
authors: JN
authors: Santos
mesh_terms: D000049:Acanthocephala / Q000502:physiology*; D000818:Animals; D001199:Ascaridoidea / Q000502:physiology*; D001938:Brazil; D006790:Host-Parasite Interactions; D007422:Intestines / Q000473:pathology; D010473:Perciformes / Q000469:parasitology*