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All Journal Sains Akuakultur Tropis : Indonesian Journal of Tropical Aquaculture
Aziz, Nurul
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Agriculture, Biological Sciences & Forestry

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Behavior responses and survival of snakehead fish (Channa striata) broodstock during acclimatization Aziz, Nurul; Prayitno, Slamet Budi; Haditomo, Alfabetian Harjuno Condro; Yuniarti, Tristiana; Hastuti, Sri; R. Eliver, Eirnest Dave Son
Sains Akuakultur Tropis : Indonesian Journal of Tropical Aquaculture Vol 10, No 1 (2026): SAT edisi Maret
Publisher : Departemen Akuakultur FPIK UNDIP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/sat.v10i1.31118

Abstract

Post-transport acclimatization is a critical phase in broodstock management, particularly for stress sensitive species such as snakehead fish (Channa striata). This study evaluated behavioral responses, feeding activity, and survival of snakehead broodstock during the first 24 hours of acclimatization following transport. The study employed a descriptive exploratory design using nine acclimatization units, with behavioral exploration conducted at two time points immediately after stocking (T0) and 24 hours post-stocking (T24). Behavior responses recorded included erratic swimming, hitting against walls, jumping, gasping, and rubbing, which were quantified during a 10 minute exploration period. Feeding response and survival rate were assessed at T24, while water quality parameters were monitored throughout the acclimatization period.The results showed that all behaviors responses were prominently expressed at T0, indicating acute stress responses following transport and handling. After 24 hours of acclimatization, a general reduction in the frequency of erratic swimming, hitting against walls, jumping, and rubbing was observed, suggesting partial behavioral recovery and adaptation to the new environment. In contrast, gasping behavior persisted with relatively minor changes, indicating that respiratory adjustment may require a longer recovery period. Feeding responses emerged in several acclimatization units at T24. Survival rates during the first 24 hours ranged from 80% to 100%, with an overall survival rate of approximately 92%. Water quality remained within tolerable ranges for Channa striata and was not considered a primary factor of behavioral variation or mortality. These results indicate that the first 24 hours post-transport represent a critical phase characterized by behavioral responses. Behavioral indicators, combined with feeding response and survival, provide a practical and non-invasive approach to assessing acclimatization success and fish welfare during the early post-transport period in snakehead broodstock
Production Performance and Economic Viability of an Intensive Litopenaeus vannamei Nursery System Eliver, Eirnest Dave Son Rondina; Parana, Jomar De Vera; Aziz, Nurul
Sains Akuakultur Tropis : Indonesian Journal of Tropical Aquaculture Vol 10, No 3 (2026): SAT September edition
Publisher : Departemen Akuakultur FPIK UNDIP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/sat.v10i3.31532

Abstract

Shrimp nursery systems play an important role in modern aquaculture by improving the survival, uniformity, and early growth of shrimp before stocking in grow-out ponds. This study evaluated the production performance and economic profitability of a commercial Litopenaeus vannamei nursery system operated under intensive tank-based conditions in Camarines Sur, Philippines. Production data were collected from a 23-day nursery culture cycle in a circular tank stocked with PL10 shrimp at a density of 2 individuals L⁻¹. Growth performance, survival, and feed utilization were evaluated, and a cost–return analysis was conducted to assess economic viability. Water quality parameters were regularly monitored to ensure optimal conditions for shrimp growth.   Results indicated strong production performance, with shrimp reaching an average body weight of 0.55 g and achieving a survival rate of 95%. Feed utilization was efficient with a feed conversion ratio (FCR) of 1.03, indicating effective feeding management and culture conditions. Economic analysis showed that the operation generated USD 595.20 net profit per cycle, with a benefit–cost ratio (BCR) of 1.30 and a return on investment (ROI) of 30%, indicating favorable financial returns.Overall, the findings demonstrate that intensive tank-based nursery systems can effectively produce high-quality L. vannamei juveniles while maintaining efficient feed use and positive economic outcomes. The adoption of well-managed nursery systems can therefore enhance production efficiency and provide a practical strategy for improving the profitability of commercial shrimp farming operations.
Co-Authors Alfabetian Harjuno Condro Haditomo Eliver, Eirnest Dave Son Rondina Parana, Jomar De Vera R. Eliver, Eirnest Dave Son Slamet Budi Prayitno Sri Hastuti Tristiana Yuniarti