Grow-out of spiny lobster Panulirus sp. with high stocking density in controlled tanks

Abstract

<p align="center"><strong>ABSTRACT</strong></p><p>The aim of this research was to determine optimum stocking density for growing-out of spiny lobster <em>Panulirus</em> sp. in controlled tanks that conducted for 30 days. The experimental spiny lobsters have the initial average weight of 130.39 ± 0.32 g and initial average total length of 140.70 ± 0.06 mm. This study used completely randomized design with three different stocking densities (KT<sub>10</sub>: 10 ind/m<sup>3</sup>; KT<sub>18</sub>: 18 ind/m<sup>3</sup>; and KT<sub>26</sub>: 26 ind/m<sup>3</sup>) and two replications. The parameters observed in this study included water quality (temperature, pH, salinity, dissolved oxygen, and total ammonia nitrogen), physiological responses (total haemocyte count, haemolymph glucose, and frequency of molt), and production performances, such as growth, specific growth rate, feed conversion ratio, and survival rate. The results showed that the spiny lobster could be reared in high stocking density in controlled tanks. Water quality during the study in each treatment was; temperature 26.56–28.65<sup>o</sup>C, salinity 29.7–33.6 g/L, pH 7.5–8.5, dissolved oxygen 6.15–6.58 mg/L, and total ammonia nitrogen 0.11–0.34 mg/L. The best stocking densities for spiny lobster was 18 ind/m<sup>3</sup> (KT<sub>18</sub>) with 2.5‒3.5×10<sup>6</sup>cells/mL total haemocyte counts, 24.6‒28.3 mg/dL haemolymph glucose, and 38.37 ± 3.20% frequency of molt. The final average body weight and length were 145.06 ± 0.42 g and 142.77 ± 0.19 mm, respectively. The survival rate reached 86.11 ± 3.92% with a specific growth rate 0.35 ± 0.01%/day, and feed conversion ratio 7.87 ± 0.31.</p><p>Keywords: high stocking density, <em>Panulirus</em> sp., physiological responses, productivity.<strong></strong></p><p><strong> </strong></p><p><strong> </strong></p><p align="center"><strong>ABSTRAK</strong></p><p>Tujuan dari penelitian ini adalah untuk menentukan kepadatan terbaik dalam pembesaran lobster laut <em>Panulirus </em>sp. yang dipelihara dalam bak terkontrol selama 30 hari. Lobster laut yang digunakan pada awal penelitian memiliki bobot 130,39 ± 0,32 g dan panjang total 140,70 ± 0,06 mm. Penelitian dilakukan menggunakan rancangan acak lengkap dengan tiga perlakuan kepadatan berbeda, yaitu: 10 ekor/m<sup>3</sup>(KT<sub>10</sub>), 18 ekor/m<sup>3</sup>(KT<sub>18</sub>), dan 26 ekor/m<sup>3</sup>(KT<sub>26</sub>) dan dua ulangan. Parameter uji yang diamati dalam penelitian ini meliputi kualitas air (suhu, salinitas, pH, DO, dan TAN), respons fisiologis (total hemosit/THC, glukosa hemolim, dan frekuensi pergantian kulit), dan kinerja produksi meliputi pertumbuhan, laju pertumbuhan spesifik, rasio konversi pakan, dan tingkat kelangsungan hidup. Hasil penelitian menunjukkan bahwa lobster laut dapat dibesarkan dengan kepadatan tinggi dalam bak terkontrol. Pengukuran nilai kualitas air pada setiap perlakuan selama pemeliharaan adalah suhu berkisar 26,56–28,65<sup>o</sup>C, salinitas 29,7–33,6 g/L, pH 7,5–8,5, DO antara 6,15–6,58 mg/L dan TAN antara 0,11–034 mg/L. Perlakuan terbaik selama penelitian adalah dengan kepadatan 18 ekor/m<sup>3 </sup>(KT<sub>18</sub>) dengan nilai THC berkisar antara 2,5–3,5×10<sup>6 </sup>sel/mL, glukosa hemolim 24,6–28,3 mg/dL,dan frekuensi pergantian kulit<em> </em>38,37±3,20%. Bobot dan panjang lobster akhir rata-rata pada perlakuan tersebut masing-masing mencapai 145,06 ± 0,42 g, dan 142,77 ± 0,19 mm. Tingkat kelangsungan hidup mencapai 86,11 ± 3,92% dengan laju pertumbuhan spesifik 0,35 ± 0,01%/hari dan rasio konversi pakan selama penelitian adalah 7,87 ± 0,31.</p><p>Kata kunci: padat pemeliharaan, <em>Panulirus </em>sp., produktivitas, respons fisiologis.</p><p> </p><p> </p>

Pathology Anatomy and Hemolymph Profile of Spiny Lobster (Panulirus homarus) Infested by Octolasmis sp. on Bottom Cage

“…Changes in environmental conditions can cause stress on the spiny lobster, affecting the immune response Jurnal Medik Veteriner Sadida Anindya Bahtiar, et al J Med Vet 2024, 7(1):5767. pISSN 2615-7497; eISSN 2581-012X | 62 through marked changes in the total concentration of THC (Subhan et al, 2018;Rivaie et al, 2023). The crustacean immune system is a nonspecific, innate system with responses including clotting, recognition of foreign particles, phagocytosis, melanization, and cytotoxicity mediated by the functions of circulating hemocytes (Melillo et al, 2018;Safira et al, 2022).…”

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

“…The spiny lobster juveniles fed seafood in sea cage farming could reach an average harvest size of 300 g in total body weight, a survival of 70-80% and productivity of 3-4 kg m -2 within a year [1]. However, survival of the juveniles in tank condition was quite low: 75% after 135 days [22], 56.32% after 30 days [10], and 86.11% after 30 days [11]. The good growth and survival in the present study confirm optimal water quality and shows the suitability of husbandry and formulated diet to lobsters.…”

“…Recirculating aquaculture system (RAS) expected to eleminate the impact of disaster has been commercially applied in European lobsters [7]. However, its application in scalloped spiny lobster has just achieved preliminary results because it was in short term pilot trials to understand water quality [8,9], shelter [10], density [11] and formulated diet [5,12,13].…”

The impact of fresh and artificial diet on growth and survival rate of spiny lobster, Panulirus homarus reared in floating net cage

“…in 2015. That regulation leads aquaculturist to concern about lobster farming and increase the production of lobster from aquaculture [2].…”