Growth, survival and intactness of green mud crab (Scylla Paramamosain) broodstock under different captive grow out protocols

2018 ◽  
Vol 16 (1) ◽  
pp. 169-180 ◽  
Author(s):  
M Latiful Islam ◽  
MNSM Siddiky ◽  
K Yahya
Keyword(s):  
Weight Gain ◽  
Culture System ◽  
Scylla Paramamosain ◽  
Mud Crab ◽  
Fibre Glass ◽  
Tank Culture

Development of broodstock of the green mud crab (Scylla paramamosain) was assessed under three different captive growout protocols viz. in the open fibre glass tanks (T1), in plastic boxes (T2) floating on fibre glass tanks and in plastic drawer/compartment (T3) for a period of 5 months under the Centre for Marine and Coastal Studies (CEMACS), Universitiy Sains Malaysia (USM). The male (M) and female (F) mud crab were cultured separately to maintain virginity. Suitability of both the sexes were evaluated considering the weight gain (size), survival and intactness of limbs during harvesting. Result of the present study revealed that, irrespectives of growout protocols, growth of mud crab happened following the sigmoid pattern. A noticeable intersexual weight attainment was observed with significantlyhigher (p<0.05) weight gain for the males. Meanwhile, growth was influenced by the culture protocols for both the sexes with significant (p<0.05) weight gain in outdoor tanks (M= 319.75 g, F= 246.17 g) followed by outdoor floating boxes (M= 250.50 g, F= 198.70 g) and indoor compartment (M= 246.40 g, F= 178.50 g). Survival and the proportion of intact crabs under indoor compartment and outdoor floating boxeswere significantly higher (p<0.05) than out door tank culture system. The result of the present study suggested that, outdoor growout protocol could be followed for faster broodstock development purposes to reduce the dependence on natural broodstock for hatchery operations.SAARC J. Agri., 16(1): 169-180 (2018)

Comparative analysis of growth performance, feed utilization, and antioxidant capacity of juvenile mud crab, Scylla paramamosain, reared at two different conditions

Crustaceana ◽  
2021 ◽  
Vol 94 (8) ◽  
pp. 1021-1033
Author(s):  
Cuiying Chen ◽  
Xiaofeng Nie ◽  
Yu Cheng ◽  
Jiajian Shen ◽  
Xianda He ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Growth Performance ◽  
Culture System ◽  
Glutathione Transferase ◽  
Feed Utilization ◽  
Scylla Paramamosain ◽  
Mud Crab ◽  
Tank Culture ◽  
Feeding Experiments ◽  
Total Antioxidant

Abstract This study was carried out to analyse the growth performance, feed utilization, and antioxidant capacity of juvenile mud crab (Scylla paramamosain) reared in two conditions. Here, a new indoor polypropylene tank culture system and a traditional outdoor pond cage facility were used to perform feeding experiments on juvenile crabs. After eight weeks, the survival rate, weight gain, moulting rate and feed efficiency of crabs cultured in polypropylene tanks were markedly higher than those cultured in pond cages. Moreover, the activities of serum acid phosphatase (ACP) and alkaline phosphatase (ALP), and the antioxidant indices including glutathione peroxidase (GSH-PX), glutathione transferase (GST), superoxide dismutase (SOD) and total antioxidant capacity (T-AOC) in hepatopancreas were higher in crabs cultured in the polypropylene tank system than those in pond cages. Based on these results, compared with the traditional pond cages, the polypropylene tank culture system is more suitable for the short-term culture of mud crabs.

scholarly journals Dietary lipid and n-3 long-chain PUFA levels impact growth performance and lipid metabolism of juvenile mud crab, Scylla paramamosain

2020 ◽  
pp. 1-15 ◽  
Author(s):  
Xuexi Wang ◽  
Min Jin ◽  
Xin Cheng ◽  
Jiaxiang Luo ◽  
Lefei Jiao ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Lipid Metabolism ◽  
Weight Gain ◽  
Growth Performance ◽  
Lipid Level ◽  
Dietary Lipid ◽  
Scylla Paramamosain ◽  
Mud Crab ◽  
Lipid Levels ◽  
Expression Levels

Abstract An 8-week feeding trial was conducted to evaluate the effects of dietary n-3 LC-PUFA levels on growth performance, tissue fatty acid profiles and relative expression of genes involved in the lipid metabolism of mud crab (Scylla paramamosain). Ten isonitrogenous diets were formulated to contain five n-3 LC-PUFA levels at 7 and 12 % dietary lipid levels. The highest weight gain and specific growth rate were observed in crabs fed the diets with 19·8 and 13·2 mg/g n-3 LC-PUFA at 7 and 12 % lipid, respectively. Moisture and lipid contents in hepatopancreas and muscle were significantly influenced by dietary n-3 LC-PUFA at the two lipid levels. The DHA, EPA, n-3 LC-PUFA contents and n-3:n-6 PUFA ratio in hepatopancreas and muscle significantly increased as dietary n-3 LC-PUFA levels increased at both lipid levels. The expression levels of Δ-6 fatty acyl desaturase and acyl-CoA oxidase in hepatopancreas increased significantly, and expression levels of fatty acid synthase, carnitine palmitoyltransferase I and hormone-sensitive TAG lipase were down-regulated, with increased dietary n-3 LC-PUFA regardless of lipid level. Based on weight gain, n-3 LC-PUFA requirements of S. paramamosain were estimated to be 20·1 and 12·7 mg/g of diet at 7 and 12 % dietary lipid, respectively. Overall, dietary lipid level influenced lipid metabolism, and purified, high-lipid diets rich in palmitic acid reduced the n-3 LC-PUFA requirement of juvenile mud crab.

The miRNAs profiling revealed by high-throughput sequencing upon WSSV infection in mud crab Scylla paramamosain

2020 ◽  
Vol 100 ◽  
pp. 427-435 ◽  
Author(s):  
Xin Ren ◽  
Shanmeng Lin ◽  
Tongtong Kong ◽  
Yi Gong ◽  
Hongyu Ma ◽  
...  
Keyword(s):  
High Throughput ◽  
High Throughput Sequencing ◽  
Scylla Paramamosain ◽  
Mud Crab

B-type allatostatin regulates immune response of hemocytes in mud crab Scylla paramamosain

2021 ◽  
Vol 120 ◽  
pp. 104050
Author(s):  
Zhanning Xu ◽  
Yujie Wei ◽  
Guizhong Wang ◽  
Haihui Ye
Keyword(s):  
Immune Response ◽  
Scylla Paramamosain ◽  
Mud Crab

Mud crab Scylla paramamosain glutamate dehydrogenase: molecular cloning, tissue expression and response to hyposmotic stress

2014 ◽  
Vol 81 (1) ◽  
pp. 175-186 ◽  
Author(s):  
Jing-Ying Lu ◽  
Miao-An Shu ◽  
Bing-Peng Xu ◽  
Guang-Xu Liu ◽  
You-Zhi Ma ◽  
...  
Keyword(s):  
Molecular Cloning ◽  
Glutamate Dehydrogenase ◽  
Tissue Expression ◽  
Scylla Paramamosain ◽  
Mud Crab ◽  
Hyposmotic Stress

Effect of methyl farnesoate and farnesoic acid during 5th zoea and megalopa metamorphosis in the mud crab Scylla paramamosain Estampador, 1950 (Decapoda, Brachyura, Portunidae)

Crustaceana ◽  
2021 ◽  
Vol 94 (7) ◽  
pp. 855-863
Author(s):  
Ming Zhao ◽  
Fengying Zhang ◽  
Wei Wang ◽  
Zhiqiang Liu ◽  
Lingbo Ma
Keyword(s):  
Larval Development ◽  
Morphological Changes ◽  
Scylla Paramamosain ◽  
Dependent Manner ◽  
Mud Crab ◽  
Methyl Farnesoate ◽  
Concentration Dependent Manner ◽  
Low Levels ◽  
Juvenile Crab ◽  
Farnesoic Acid

Abstract The mud crab Scylla paramamosain is one of the economically important aquaculture species in China. The larval development of the mud crab is characterized by two significant morphological changes, from the 5th zoea (Z5) to the megalopa (M) stage and from the M to the first juvenile crab (C1) stage. In this study, we found that methyl farnesoate (MF) could prohibit the Z5 to M metamorphosis in a concentration-dependent manner, and that a concentration of 10 μM MF could completely prohibit the Z5 metamorphosis. Farnesoic acid (FA) could also prohibit the Z5 metamorphosis, but its effects seemed to be concentration-independent. In addition, MF could delay rather than prohibit the M to C1 metamorphosis, while FA had no effect on the M to C1 metamorphosis at all. To summarize, it is hypothesized that either absence of MF and FA, or at least very low levels of these substances, might be necessary for a successful Z5 to M metamorphosis.

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