| dc.description.abstract | This research was done in Belumai River Kabupaten Deli Serdang
Provinsi Sumatera Utara. This research was done in May until June
2014 in four different locations by using census method. The purpose of this
research is to know the aspect of growth (the length weight relationship, the
condition factor, and the growth coefficient) and to know the reproduction (the
sex ratio, the gonad maturity level, the gonad maturity index, the size of the first
mature gonad, fecundity, and the egg diameter). The number of lemeduk fish
(Barbodes schwanenfeldii) which caught is 55 fish. The results of the Von
Bertalanffy growth equation for female lemeduk female with asymptotic length
(L∞) is 282.45 mm, for male lemeduk with asymptotic length (L∞) is 304.50
mm, and the growth coefficient for female lemeduk is 0.4750 and for male fish is
0.750. The equation of the length weight relationship of a female lemeduk is Lt =
282.45 (1-e -0.4750 (t-0.18)) and for male lemeduk fish is Lt = 304.50 (1-e -0.750 (t-
0.11)). The condition factor for the female lemeduk and male lemeduk are about
0.946-1.059. The sex ratio is consisting of 21 females fishes and 34 male fishes
with a balanced sex ratio. The maturity gonad level for lemeduk female fish and
male fish are found in I-IV. The gonad maturity index for female fish is 0,05% -
9,66% and for male fish is 0,05% - 9,75%. The size of the first mature gonad for
male fish is 193 mm. The fecundity of female lemeduk is 8635-54372 points. The
distribution of the female lemeduk egg diameter is 0.068-0.1202 mm. | en_US |
