Analysis of allometric growth and condition index of tiger shrimp (Penaeus monodon) in Juata Laut Waters and Fishpond, Tarakan (Indonesia)

Abstract

The purposes of this research were to analyze the growth of allometric and condition index of tiger shrimp (P.monodon) in Juata Laut waters and fishpond, Tarakan (Indonesia). The implementation of research for 3 months from January to March 2020. The research method used a quantitative descriptive with a case study and exploratory approach. The determination of the study area was done with purposive judgment sampling originating from the catch of trawl fishermen in Juata Laut waters and fishpond, Tarakan (Indonesia). A sampling of tiger shrimp (P.monodon) based on surveys of the catches from those two locations. The data collection method involved the differences between sex, total length, carapace length, and the total weight of tiger shrimp (P.monodon) in the Laboratory of Fisheries Biology, Faculty of Fisheries and Marine Science, University of Borneo Tarakan. The research variables were sex ratio, allometric growth, and condition index of male and female tiger shrimp. The results from Juata Laut waters obtained a sex ratio for males and females was 2:1 with a percentage of the male at 66.7% and female at 33.3%. The allometric growth, i.e., a total length and a total weight of male was positive and female was negative with a condition index of male and female for thin body shape was 56.3% and 50%; ideal body shape of 12.5% and female not found; fat body shape was 31.3% and 50%, respectively. The results from fishpond showed that the sex ratio for males and females was 1:1.52, with a percentage of 39.6% for males and females was 60.4%. The allometric growth of total length and total weight from the male was negative and female was positive with condition index of a male was 2.4% and female was not found; the thin body shapes was 32.7% and 48.4%; the ideal body of 2.4% and 1.6%; the fat body was 57.1% and 50% for each one; very fat body was 2.4% and female was not found.