Open AccessGrowth, mortality and exploitation rate of Indo-Pacific King Mackerel (Scomberomorus guttatus, Bloch and Schneider, 1801) in the Tarakan waters, North Kalimantan, Indonesia
Author(s) -
Umi Chodrijah,
Tegoeh Noegroho,
Bram Setyadji
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/584/1/012026
Subject(s) - fish measurement , fishing , fishery , mortality rate , stock assessment , biology , allometry , geography , fish <actinopterygii> , ecology , demography , sociology
Indo-Pasific King Mackerel or fisherman in Tarakan often call it the mackerel (Scomberomorus guttatus , Bloch & Scheneider, 1801) was the main catch of gillnet fishermen in the waters of Tarakan, North Kalimantan. This research aims to obtain data and information about the estimated rate of growth, mortality rate and exploitation rate. Time series data was collected from the fishing place in Selumit, Tarakan from April to December 2018. Parameter estimation was done using the FISAT II (FAO-ICLARM Stock Assessment Tools) program. The results of the study showed fork length of mackerel between 23-61 cmFL, each month mode varying between 29 – 39 cmFL with an average mode of 35 cmFL, growth patterns were negative allometric, The average length at first capture (Lc) smaller than the length at first maturity (Lm) so if this condition continue it will interfere the sustainability of fish resources. The growth rate (K) amounted to 0.28 per year with an asimptotic length of 64.21 cm. The total mortality rate (Z) of 1.44 per year, with a natural mortality rate of 0.64 per year, the rate of fishing mortality (F) amounted to 0.80 per year. The exploitation rate (E) of 0.56 per year indicates that the degree of harvesting leads to a more capture condition.