GROWTH COMPARISON OF MAHSEER (Tor tambroides) FROM MANNA AND TARUSAN RIVER IN WESTERN SUMATERA RIVER
Abstract: Mahseer is commonly
used as a premium consumption fish with exceptional price, however, these
species have encountered dwindle in distribution and abudance. The objective of
this study was to investigate and to compare aspects of the interspatial
variability of Western Sumatra component growth of mahseer between Manna River
and Tarusan River. Mahseer samples were collected from the Manna River,
Bengkulu Province and Tarusan River, West Sumatra Province. Monthly sampling
was carried out over a period of February to October 2012 in Manna River and
February to July 2012 in Tarusan River for detailed growth study. A total of
295 mahseer samples were collected from five sampling sites in Manna River and
495 mahseer samples were collected from three sampling sites in Tarusan River.
The results show the ge group population estimation of T. Tambroides from Manna
River and Tarusan River based on the analysis of length-frequencies using the
Bhattacharya method, resulted in two different age groups. The theoretical growth
curve for length from Manna River, the values are L¥ = 50,45 cm, K = 1,90 yr-1,
t0 = -0,07 yr-1 and F = 3,684, and for
weight, the values are W¥ = 1395,49 gr, K = 0,71 yr-1, t0 = -0,078 yr-1 and F = 6,148. The parameters of the von
Bertalanffy growth curve in length from Tarusan River were L¥ = 31,34 cm, K =
1,70 yr-1, t0 = -0,09 yr-1 and F = 3,21
and W¥ = 634,86 gr, K = 0,48 yr-1, t0 = -0,147 yr-1 and F = 5,282 in weight. The length-weight relationship estimated for
Manna River was W = 0,000007TL3,086 for females (R2 = 0,9545, N = 91) and W =
0,0037TL1,882 for males. While for Tarusan River, length-weight relationship
estimated was = 0,00003TL2,839. Mahseer from Manna River population has better
growth parameters than those at Tarusan
River.
Keywords: Growth; mahseer;
Manna and Tarusan River
Author: Arif Wibowo, Mirna
Dwirastina
Journal Code: jpperikanangg160053
