Length Weight Relationship and Food Habits Of Polynemus longipectoralis in Lower Part Of Musi River

Dina Muthmainnah

Balai Riset Perikanan Perairan Umum Palembang, Jln. Beringin no. 308 Mariana Palembang, email: dina_mth@yahoo.co.id

ABSTRACT

Polynemus longipectoralis or “janggutan” are member of family Polynemidae found in estuaries and coastal waters. In Musi river, they also in middle part of the river. Research in order to know food habit and growth pattern of Polynemus longipectoralis. It was conducted from June to July 2007. Samples were collected by gillnets from lower part of Musi river, directly weighting and measure of its total length. Fish guts were cut out and preserve in formalin 10% solution for analysis of composition and frequency of feed items. The result shows that Polynemus longipectoralis has length-weight relationships as an equation of W = 1,2464L^1,4203. It is concluded that the growth pattern of fish are negative allometric. Shrimp is the main food of “janggutan”, that is mean the fish are carnivorous.

Keywords: Polynemus longipectoralis, length-weight relationship, food habit

In Book 2: General Papers, Proceeding International Conference on Indonesian Inland Waters, 17-18 November 2008, Research Institute for Inland Fisheries, Research Centre for Capture Fisheries, Marine and Fisheries Research Agency, ISBN 978-979-17100-8-4.