By Bahtiar, Muh. Ardin La Musa, Ulfi Damayanti, Muh. Fajar Purnama, & Latifa Fekri
Corbicula fluminea inhabiting the Lahumbuti River exhibit indeterminate growth, and their condition index and meat weight ratio remain unknown. This study seeks to elucidate the temporal fluctuations in growth and condition index of these clams within the Lahumbuti River, situated in Konawe, Southeast Sulawesi.
The research was conducted from August 2021 to July 2022 along the Lahumbuti River in Konawe, Southeast Sulawesi. Clams were collected through purposive random sampling utilizing a shovel within 1x1 m2 quadrants. Subsequently, clam width and wet meat weight were measured using a caliper (0.5 mm) and a digital scale (0.01 g) at the Laboratory of the Faculty of Fisheries and Marine Science, Halu Oleo University. Following collection, the clams underwent drying in an oven at 60°C for 48 hours and were weighed using an analytical balance (0.0001 g). Data were quantitatively analyzed descriptively employing standard formulas.
The findings revealed an average b value of 2.15 with a coefficient of determination (R2) of 5.18. The t-test indicated a negative allometric condition among the clams. Temporally, the b value exhibited variation, with the lowest recorded in October (1.60) and a subsequent increase reaching its zenith in February (3.0), accompanied by R2 values ranging from 83.18 to 93.24. The mean condition factor stood at 2.54 ± 1.08, fluctuating between 1.60 ± 0.54 and 3.58 ± 1.12. Notably, the highest condition index occurred in November (3.58), contrasting with the lowest observed in April (1.60). Overall, the clam condition index predominantly fell within the lean category.
Source:
Bahtiar, B., Fekri, L., La Musa, M.A., Damayanti, U. and Purnama, M.F., 2023. Temporal Variation of Growth and Condition Index of Clams (Corbicula fluminea) in The Lahumbuti River, Konawe, Southeast Sulawesi. Jurnal Moluska Indonesia, 7(2), pp.77-87. 🔗