Abd.Razak, Intan Hazimah (2022) Occurrence of endoparasites in sea catfish, Hexanematichthys sagor (Hamilton, 1822) in Sabak Bernam, Selangor. [Project Paper] (Submitted)
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Abstract
Hexanematichthys sagor (Hamilton, 1822) or also known as Sagor catfish is an edible, non-commercial wild marine catfish commonly found in Malaysia. Due to its scavenging and non-selective feeding habits, the fish may become infected with parasites, which could pose a risk to the public's health. Since the endoparasite infection of this catfish has not yet been documented in Malaysia, the present study aims to evaluate the occurrence of endoparasite infection and histopathological changes in juvenile and adult Sagor catfish. This study was carried out in September 2022 in Sekendi, Sabak Bernam. Ten fish consisting of five juveniles and five adults were sampled for endoparasites during necropsy. Twenty-five parasites were collected from the kidney and intestine consisting of different parasitic genera including nematodes, which had a prevalence of 60% in adults and 20% in juvenile, myxozoans, which had a prevalence of 20% in both adults and juvenile, and 20% prevalence of unidentified encysted metacercariae (EMC), which only appeared on juvenile. No parasites were obtained from the liver and stomach. Nematode from the species Baylisascaris columnaris was confirmed through conventional PCR. The Mann-Whitney Test performed using GraphPad Prism v.9.4.1 statical software revealed no significant difference (p<0.05) between the adult and juvenile Sagor catfish in terms of endoparasites burden. The histological scoring system identified structural changes in the kidney, including presence of the interstitial pigment (melanomacrophages) and tubular epithelial degeneration or necrosis. Changes such as infiltration of lymphocyte in lamina propia, sloughing of intestinal epithelium and goblet cell hyperplasia was observed in the intestine. The findings on this study could serve as a preliminary parasite inventory in the area and for future studies on the potential effects upon consumption of the species.
| Item Type: | Project Paper |
|---|---|
| Faculty: | Faculty of Veterinary Medicine |
| Depositing User: | Ms. Nordeena Abdul Aziz |
| Date Deposited: | 13 Mar 2024 04:36 |
| Last Modified: | 13 Mar 2024 04:36 |
| URI: | http://psaspb.upm.edu.my/id/eprint/1661 |
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