Effect of Stunting Duration to the Physiological Condition of Elver of the Indonesian Shortfin Eel (Anguilla bicolor bicolor) | ||||
| Egyptian Journal of Aquatic Biology and Fisheries | ||||
| Article 77, Volume 29, Issue 1, January and February 2025, Page 1409-1424 PDF (381.87 K) | ||||
| DOI: 10.21608/ejabf.2025.410649 | ||||
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| Author | ||||
| Fekri et al. | ||||
| Abstract | ||||
| Anguilla bicolor bicoloris a commercially valuable fish species with a high economic significance and serves as an export commodity in the fishery sector. However, the availability of eel stocks remains limited, as the seeds required for rearing are still dependent on natural catches. This study aimed to assess the effects of stunting caused by limiting the amount of feed (2%) and lowering the maintenance media temperature (24°C) on the physiological condition of elvers. The study was conducted over a period of six months (May 2017 to November 2017) at the Physiology Laboratory of Aquatic Animals, FPIK IPB. A completely randomized design was used with three treatment periods: 2, 4, and 6 months, each with three replications. The elvers had an initial body weight of 2-3g per individual and a body length of 9-12cm. The fish were kept in aquariums measuring 60 x 40 x 30cm, with 50 individuals per aquarium, and were fed commercial pellets (1.5mm size, 46% protein content). The results showed that after 2, 4, and 6 months of stunting, the elvers maintained normal physiological conditions, with survival rates above 87%. The specific growth rate of the elvers was close to zero (0.1%), and the coefficient of variation was below 20%. Stunting through feed restriction (2%) and the use of low-temperature media (24°C) did not negatively impact the physiological condition or cause stress. Instead, it effectively controlled growth and reduced individual size variation among the elvers. | ||||
| Keywords | ||||
| Elver; Physiological; Growth; Stunting; Temperature | ||||
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