Morphometric and Meristic Analyses of Catfish (Hemibagrus spp. ) in Sarawak

Nisa, Mohamad (2019) Morphometric and Meristic Analyses of Catfish (Hemibagrus spp. ) in Sarawak. [Final Year Project Report] (Unpublished)

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Abstract

Hemibagrus spp. is a freshwater catfish from Bagrid family which is widely distributed throughout South East Asia and Africa. Eventhough this genus have been studied since a long time ago, the data on morphometric and meristic on this genus is still scarce in Sarawak. In addition, morphological characters in distinguishing Hemibagrus spp. is still unclear. Hence, the purpose of this study was to provide morphometric and meristic data of Hemibagrus spp. as well as to distinguish between Hemibagrus spp. by using those data. Specimens of Hemibagrus spp. were obtained from Sungai Semadang (n=3) and Sungai Samunsam (n=2). Additional Hemibagrus spp. specimens (n=15) were taken from Unimas Aquatic Muzeum. 26 morphometric parameters were measured and 6 meristic counts were used. Morphometric data were log transformed and adjusted by using log-transform formula to standardize all the measurements. Then, the data adjusted were analyzed by using independent t-test and PCA. The results obtained revealed that there were clear separations between H. nemurus and H. planiceps. Two important morphological characters have been identified to have significant value (P<0.05) which represents pre-anal length and pre-dorsal length. H. nemurus displayed a longer PDL compared to H. planiceps (32.43-64.79 %SL and 30.67-54.95 %SL). H. nemurus also shows longer PAL compared to H. planiceps (71.45±15.95 and 70.95±11.00). However, meristic count only detected slight differences in the branching of pectoral fin rays of Hemibagrus spp. (1, 7-8 and 1, 7-8, i).

Item Type: Final Year Project Report
Additional Information: Project Report (B.Sc.) -- Universiti Malaysia Sarawak, 2019.
Uncontrolled Keywords: Morphometric, meristic, Hemibagrus spp., three layer net, gill net, PCA, independent t-test
Subjects: S Agriculture > SH Aquaculture. Fisheries. Angling
Divisions: Academic Faculties, Institutes and Centres > Faculty of Resource Science and Technology
Depositing User: Unai
Date Deposited: 30 Sep 2021 06:02
Last Modified: 30 Sep 2021 06:02
URI: http://ir.unimas.my/id/eprint/36241

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