GROWTH AND EXPLOITATION STATUS (Channa striata Bloch, 1793) IN LUBUK LAMPAM FLOODPLAINS, SOUTH SUMATERA
Abstract: Due to the economic
importance of C. striata in Lubuk Lampam floodplains (Indonesia), this study is
aimed to estimate the biological and population parameters required for
proposing a future plan to sustain and manage this valuable fish resource. The
growth, mortality and explotation ratio of Channa striata estimated by
employing FiSATProgramme are reported. The parameters of Von Bertalanffy growth
model of 1,529 sample fishes were estimated as K= 0.36/ year, L” = 72.98 cm and
to = -0.52 year. The coefficients of total mortality (Z), natural mortality (M)
and fishing mortality (F) were 1.72, 0.73 and 0.99 year-1 respectively.
Relative yield per recruit analysis shows that the presentexploitation rate (E)
was 0.58. Yield per recruit can be maximized at the exploitation ratio of 0.5
and Lc/Linf values of 0.3. The Yield per recruit and biomass per recruit models
indicated that, the fisheries status of C. striata in Lubuk Lampam floodplains
exceed the limit reference point (Fmax), thus stock of this species in Lubuk
Lampam floodplains is indicated being driving down.Reduction in fishing effort
and increase number of selective fishing gears are suggested to sustain the
fishery of Channa striata in Lubuk Lampam floodplains.
Keywords: Lubuk Lampam
floodplains; growth; mortality; management; Biological reference points; Channa
striata
Author: Zulkarnaen Fahmi,
Syarifah Nurdawati, Freddy Supriyadi
Journal Code: jpperikanangg130032
