Stock Status of Green Tiger Prawn (Penaeus semisulcatus de haan, 1844) in Bombana and Adjacent Waters, Southeast Celebes, Indonesia

Abstract

The high market demand for green tiger prawn (Peneus semisulcatus de Haan) has caused intensive fishing for this resources and tended to threaten their sustainability. Studies of stock status are the main foundations for formulating a management for sustainable utilization. The purpose of this study was to determine the stock status of green tiger prawn in the Bombana and adjacent waters, South-east Celebes. The study was conducted from April to November 2021 using a survey method. The study results revealed that the green tiger prawn growth pattern was negative allometric and that the ratio of males and females was imbalanced. Based on total length measurement, length at first capture (Lc) and length at first mature (Lm) were 37.42 cm and 38.72 mm respectively. While growth rate (K) and maximum total length (L∞) valued 1,7 per year and 58.9 mm respectively. The estimate total mortality rate (Z) was 2.57 per year, the fishing mortality rate (F) and natural mortality rate (M) were 1.12 per year and 1.45 per year, respectively. Recruitment pattern occured throughout the year with one peak in June. The exploitation rate (E) was 0.44 per year, therefore the stock status was categorized as fully exploited. In order to ensure the sustainability of the green tiger prawn, precautionary approach such as increasing fishing effort by 10 % of the current situation is strongly needed to be applied