Morphological and histochemical changes associated with massive infection by Neoechinorhynchus buttnerae (Acanthocephala: Neoechinorhynchidae) in the farmed freshwater fish Colossoma macropomum Cuvier, 1818 from the Amazon State, Brazil

The study describes the morphological changes associated with parasitism by the intestinal acanthocephalan Neoechinorhynchus buttnerae in tambaqui juveniles Colossoma macropomum farmed in an excavated nursery, in Manaus (Amazon) in September 2013. After fish biometrics, analysis of macroscopic chang...

Full description

Saved in:

Bibliographic Details
Published in:	Parasitology research (1987) Vol. 116; no. 3; pp. 1029 - 1037
Main Authors:	de Matos, Lorena V., de Oliveira, Maria Inês B., Gomes, Ana Lúcia S., da Silva, Grazyelle S.
Format:	Journal Article
Language:	English
Published:	Berlin/Heidelberg Springer Berlin Heidelberg 01-03-2017 Springer Springer Nature B.V
Subjects:	Abrasion Acanthocephala - anatomy & histology Acanthocephala - genetics Acanthocephala - growth & development Acanthocephala - isolation & purification Analysis Animals Aquaculture Biomedical and Life Sciences Biomedicine Biometrics Biometry Blood vessels Brazil Characiformes - parasitology Color Compression Edema Fish Fish (Food product) Fish Diseases - parasitology Fish Diseases - pathology Fresh Water - parasitology Goblet cells Health aspects Helminthiasis, Animal - parasitology Helminthiasis, Animal - pathology Hypertrophy Immunology Intestinal Diseases, Parasitic - pathology Intestinal Mucosa - parasitology Intestinal Mucosa - pathology Intestine Intestines - parasitology Medical Microbiology Metaplasia Microbiology Morphology Mucosa Nodules Original Paper Parasites Parasitism pH effects Proboscis White blood cells Brazil Intestine Morphological changes Histopathology Colossoma macropomum Neoechinorhynchus buttnerae
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	The study describes the morphological changes associated with parasitism by the intestinal acanthocephalan Neoechinorhynchus buttnerae in tambaqui juveniles Colossoma macropomum farmed in an excavated nursery, in Manaus (Amazon) in September 2013. After fish biometrics, analysis of macroscopic changes in morphology and counting of parasites, bowel fragments were fixed and submitted to histological and histochemical processing. All fish analyzed had acanthocephalans in the intestine; intestinal loops were milky white in color, with the presence of nodules with heavy parasitism. The changes in tissues that form the intestine varied according to the arrangement of the parasites: either free in the intestinal lumen or fixed by the proboscis on the organ wall. In the first case, the changes found were flaking, abrasion, compression, hypertrophy of goblet cells and disappearance of the villi on the mucosa, leukocytic cell infiltration in the submucosa, and muscle layer thickening. In the second case, in addition to these, other changes were observed as metaplasia in muscle tissue with its replacement by a loose connective tissue with severe leukocytic infiltration, edema in blood vessels, and necrotic foci. The histochemical analysis revealed that positive Alcian Blue mucosal cells (pH 2.5) were more expressive in parasitized intestines than in intestines not parasitized by N. buttnerae .
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0932-0113 1432-1955
DOI:	10.1007/s00436-017-5384-3