Analysis of Feeding Habits and Biological Aspect of Yellow Stripe Trevally (Selaroides leptolepis) Caught at the Lekok Coast, Pasuruan, East Java

Abstract

The fish population in waters can decrease due to the uncontrolled utilization of fish resources. Food is one of the determining factors for the population and condition of fish in the waters. Considering the economic and ecological importance of the yellow trevally in food webs, this research was conducted to analyze the feeding habits and biological aspects of the yellow trevally in Pesisir Lekok. This study used a descriptive data analysis with complete randomized design. The research was conducted from May to July 2023 at Pesisir Lekok, Pasuruan, East Java. The results showed that the yellow trevally is carnivorous with the dominant food found being zooplankton from the genus Microcalanus sp. with a frequency of occurrence of 41%. The highest plankton composition found in the stomach of the yellow trevally was the phytoplankton of the Aulacoseira genus, which was 22.2%. Meanwhile, the foods most preferred by the yellow trevally are Rotifera and Charophyta with an index value of +1. The biological aspect of the yellow trevally seen from the length-weight relationship shows that the growth pattern of the yellow trevally is negative allometric with a b value of 2.651. While the condition factor range average values are 1.009 – 1.027. The results of this study are expected to be the basis for efforts to support the sustainable management of fisheries resources, especially the yellow trevally in the coastal waters of Lekok.