Preliminary survey of Helminths in Thunnus Albacares (Yellowfin tuna) landed in Lucena fish port

Date of Publication

2008

Document Type

Bachelor's Thesis

Degree Name

Bachelor of Science in Biology

Subject Categories

Biology

College

College of Science

Department/Unit

Biology

Thesis Adviser

Maria Carmen Lagman Ablan

Defense Panel Chair

Josefina B. De Jesus

Abstract/Summary

A total of 22 Thunnus albacares samples collected between October 2007 and February 2008 from Lucena Fish Port were examined for the presence of parasites. Isolated parasites were observed for identification through light microscopy. Dehydrating, staining and destaining, clearing and mounting were done by the MICROLAB. Total length of the T. albacares ranged from 32.0 to 46.0 centimeters. The mean total length is 38.95 + 4.22 centimeters, indicating that the samples were juveniles. The weight of the samples ranged from 595.05 to 1,200 grams. The mean weight is 773.53 + 439.81 grams. Out of the 22 fish samples examined, 200 parasites were recovered, 186 parasites from the gills and 14 from the gastrointestinal tract. No parasites were recovered from the skin, fins, heart, liver and muscles. Results showed that 16 fish samples or 73% are infected with helminths. The helminths found in the gills were Digeneans belonging to the genus Didymocystis. The month of February 2008 had the highest mean parasites collected in the gills with 20 + 21 while the month of October 2007 had the lowest mean parasites with 5.4 + 3.6. In this study, having frozen samples and fewer samples may have influenced the recovery of parasites.

Abstract Format

html

Language

English

Format

Electronic

Accession Number

CDTU013936

Shelf Location

Archives, The Learning Commons, 12F, Henry Sy Sr. Hall

Physical Description

1 computer optical disc. ; 4 3/4 in.

Keywords

Yellowfin tuna--Philippines--Lucena; Tuna-- Philippines--Lucena--Surveys; Fishes--Philippines-- Lucena

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