Growth Performance of Scalloped Spiny Lobster <i>Panulirus homarus</i> (Linaeus) Fed Formulated Diet in Recirculating System

Abstract

Lobster aquaculture industry in sea cage farming has used seafood as its food leading to challenges such as disease risk, environmental degradation and disaster. This paper presents growth, survival, sexual maturity and flesh quality of scalloped spiny lobsters from a two period culture in recirculating system. In the first period, a number of 2655 healthy juveniles acclimated with formulated diet at average body weight of 11.4-14.0 g were stocked at 36.88 individuals m -2 in three months. In the second period, a number of 2334 selected healthy juveniles at average body weight of 52.18-69.97 g were restocked at 13.5-14.1 individuals m -2 . The lobsters were fed formulated diet twice a day at a feeding rate of 2.2-1.6% of the body weight. The quality of biofilter based reused water was 28.4-29.8°C, pH: 7.6-8.0, salinity: 26.8-36.4 ppt, dissolved oxygen ≥ 5.2 mg L -1 , total ammonia nitrogen ≤ 0.82 mg L -1 , NO 2 -N ≤ 0.5 mg L -1 , NO 3 -N ≤ 4.3 mg L -1 , alkalinity: 96.4-132.4 mg L -1 . The body weight of lobsters increased following a polynomial (r 2 = 99.9%) and reached harvest size of 300 g after nine months and final size of 349.5 ± 9.9 g, survival of 81.5% and productivity of 4.51 ± 0.28 kg m -2 after thirteen months. The lobster performance was similar to those fed seafood in sea cage farming. The berried females were observed at a minimum carapace length of 3.5 cm from July to September. The cooked lobster flesh and its content of fat and highly unsaturated fatty acids were less reddish and half of the lobsters fed seafood in sea cage farming, respectively. The differences are likely due to a deficiency of astaxanthin content in the formulated feed and possibly a poor assimilation of lipid by the lobsters. The results are interesting in development of a land based farming of spiny lobsters.

Effect of different diets on growth performance, physiological response and behavior of spiny lobster Panulirus homarus (Linnaeus, 1758)

“…Water quality parameters observed in this study were temperature 28.9-29.5 o C, pH 8.3-8.65, salinity 31-32 ppt, dissolved oxygen (DO) 4.5-6.1 mg.L -1 , nitrite (NO2) 0.069-0.091 mg.L -1 , and ammonia (NH3) 0.083-0.30 mg.L -1 . Mai and Tran (2022) reported the results of their research that the recommended water quality for spiny lobsters is a temperature ranging from 25-30°C, dissolved oxygen (DO) 2.7-5.4 mg.L-1, and NH3 <0.1 mg.L -1 . Ningtias et al (2019) added that the optimal temperature when rearing spiny lobster juveniles ranges from 28-29 o C, salinity 32-33 ppt, dissolved oxygen (DO) 5-6 mg.L -1 and pH 8-8.06.…”

“…Growth and production can increase if the feed has a nutritional content that is in accordance with the needs of the cultivated aquatic organisms (Anggraini et al, 2018). Mai and Tran (2022) stated that lobsters prefer fresh food to frozen food. However, the availability and nutritional value of fresh fishery products varies, are seasonal and excessive use can also cause environmental pollution and disease agents.…”

The Photoperiod Significantly Influences the Growth Rate, Digestive Efficiency, Immune Response, and Antioxidant Activities in the Juvenile Scalloped Spiny Lobster (Panulirus homarus)

“…Recognized as one of the most valuable seafood products [4], the scalloped spiny lobster is highly sought after in international markets due to its exquisite taste and rich nutritional profile [5]. However, with the development of fishery, the natural resources of lobsters have decreased dramatically [4][5][6][7][8][9][10][11]. In order to meet the market demand, larvae are captured from the wild and reared artificially [6][7][8][9][10][11].…”

“…However, with the development of fishery, the natural resources of lobsters have decreased dramatically [4][5][6][7][8][9][10][11]. In order to meet the market demand, larvae are captured from the wild and reared artificially [6][7][8][9][10][11]. Current research on this species encompasses a range of topics, including breeding practices [6], nutritional analysis [7], capture techniques [8,9], resource assessment [9][10][11], habitat studies [12], physiological characteristics [13][14][15], disease management [16,17], and genomics [18][19][20].…”

“…In order to meet the market demand, larvae are captured from the wild and reared artificially [6][7][8][9][10][11]. Current research on this species encompasses a range of topics, including breeding practices [6], nutritional analysis [7], capture techniques [8,9], resource assessment [9][10][11], habitat studies [12], physiological characteristics [13][14][15], disease management [16,17], and genomics [18][19][20]. Despite these advancements, the impact of lighting conditions on scalloped spiny lobsters remains relatively underexplored.…”