e-journal

Pathological assessment of farmed yellowtail tetra Astyanaxaltiparanae infested by Acusicola sp. (Ergasilidae)

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This study registers for the first time the copepod Acusicola sp. infesting the gills of farmed yellowtail tetraAstyanax altiparanae, as well as new information on gross pathology and gill alterations. Five specimens ofyellowtail tetra showing slow swimming, respiratory difficulty, scaleness and darkened skin were exam-ined. Fish were analysed in situ for ectoparasites diagnosis. Fragments of the gill arches were removed andprocessed according to usual histopathology. The gills showed focal and multifocal paleness and whitishareas besides the congestion and hemorrhage signs on the gill filaments. Several white spots attached tothe gill filament apex with slight movement were identified as the ergasilid crustacean. Histopathologicalanalysis revealed the gill and blood vessels compression. It was also observed proliferative alterationsclose to gill filament apex, hyperplasia, total fusion and subepithelial oedema of the secondary lamellae,proliferation of the mucus cells, and inflammatory infiltrate by eosinophilic granular cells surroundingthe parasite attachment region. The best management practices and the implementation of diagnosticprogram are also discussed.

Keywords:FishCopepodaHistopathologyPathogenesisGills

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Informasi Detail

Judul Seri

Aquaculture Reports

No. Panggil

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Penerbit

: Elsevier., 2015

Deskripsi Fisik

Aquaculture Reports 2 (2015) 63–66

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

Wati/Agus

Versi lain/terkait

Lampiran Berkas

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