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- Title
Distribution of the acanthocephalan <italic>Neoechinorhynchus buttnerae</italic> and semiquantitative analysis of histopathological damage in the intestine of tambaqui (<italic>Colossoma macropomum</italic>).
- Authors
Aguiar, Lídia Silva; de Oliveira, Maria Inês Braga; de Matos, Lorena Vieira; Gomes, Ana Lúcia Silva; da Silva, Grazyelle Sebrenski; da Costa, Jesaías Ismael
- Abstract
In this paper, we have described for the first time a semiquantitative method to evaluate histopathological damage, taking the degree of <italic>Neoechinorhynchus buttnerae</italic> attachment to the intestinal wall of the tambaqui (<italic>Colossoma macropomum</italic>), an important species in Brazilian aquaculture, into account. Twelve specimens of tambaqui were collected from a fish farm. Their bowels were removed and divided into seven morphologically distinct portions according to density and distribution of the parasite studies. Fragments from each fraction were histologically processed and analyzed. There was a clear preference on the part of <italic>N. buttnerae</italic> for the intermediate regions of the intestinal tube, where the highest densities were recorded. The intensity of damage to the host, estimated by calculating the Histopathological Alteration Index (HAI), showed severe and irreversible changes only where the parasite had its proboscis penetrated into the intestine wall.
- Subjects
TAMBAQUI; PREDATORS of fishes; FISH parasite control; AQUACULTURE; HELMINTHS; BIOSECURITY
- Publication
Parasitology Research, 2018, Vol 117, Issue 6, p1689
- ISSN
0932-0113
- Publication type
Article
- DOI
10.1007/s00436-018-5840-8