Evaluation of the nutritional quality of selected dietary ingredients for mud crab Scylla serrata of Suarashtra region in Gujarat, India

K, Sumara M. Ayaz; Vadher, K. H.

doi:10.31018/jans.v12i3.2243

Cited by 3 publications

(2 citation statements)

References 11 publications

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“…Nutrients rich in essential fatty acids are beneficial for the growth and survivability of larval stages of crabs [96]. Scylla species tend to feed at night, making it difficult to spot during the day [94,97]. Reports on the dietary preferences of mud crabs indicate that it has both an animal and plant-feeding nature.…”

Section: Predatory Contribution To Food Chain Under Varied Water Habi...mentioning

confidence: 99%

“…This system enables the clearance of bottoms in the culture area from waste products and increases the availability of nitrifying and denitrifying bacteria in the medium [193]. The major components of a healthy crab diet include seaweeds, poultry waste, earthworms, and fish meal as food products such as seaweeds provide 57.18% of carbohydrates, while fish meal contains 61% protein and poultry waste provides 25% lipid content [97]. Adopting all these techniques shall be helpful to improve the culture system and production even under deadly pathogen attacks.…”

Section: Habitat Water Quality Management and Techniques To Enhance M...mentioning

confidence: 99%

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Impacts of Habitat Quality on the Physiology, Ecology, and Economical Value of Mud Crab Scylla sp.: A Comprehensive Review

Pati

Paital

Panda

et al. 2023

Water

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The water of the mangrove ecosystem and surrounding coastal areas are gradually shrinking due to the intense destruction. Therefore, the effects of the physicochemical properties of the habitat water on the in-habitant species must be studied. Scylla sp. is involved in the food chain and bioturbation structure formation in mangrove forests. Five major electronic databases, such as PubMed, Scopus, Web of Science, AGRICOLA, and Google Scholar, were systematically searched to review the cause and effects of influencing abiotic factors, mainly physicochemical properties of habitat water, including water pollution on Scylla sp. Responses of mud crabs at biochemical, molecular, physiological, growth, reproduction, and production level were independently reviewed or in relation to physicochemical properties of habitat water, pathogens, heavy metals, and harmful chemicals present in their habitat water. Review results suggest that these crabs are mostly under threats of overfishing, varied physicochemical properties of habitat water, pathogens, heavy metals, and chemical toxicants in water, etc. At low temperatures, the expression of calreticulin and heat shock protein-70 mRNA expression is elevated. Like melatonin, the hormone serotonin in mud crabs controls ecdysteroids and methyl farnesoate at 24 °C, 26 ppt salinity, and pH 7.2 of habitat water, facilitating their reproduction physiology. Xenobiotics in habitat water induce toxicity and oxidative stress in mud crabs. These crabs are prone to infection by white spot and rust spot diseases during the winter and spring seasons with varied water temperatures of 10–30 °C. However, elevated (65%) weight gain with higher molting at the juvenile stage can be achieved if crabs are cultured in water and kept in the dark. Their larvae grow better at 30 ± 2 °C with salinity 35 ppt and 12 hL/12 hD day length. So, monitoring habitat water quality is important for crab culture.

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Section: Predatory Contribution To Food Chain Under Varied Water Habi...mentioning

confidence: 99%

Section: Habitat Water Quality Management and Techniques To Enhance M...mentioning

confidence: 99%

Impacts of Habitat Quality on the Physiology, Ecology, and Economical Value of Mud Crab Scylla sp.: A Comprehensive Review

Pati

Paital

Panda

et al. 2023

Water

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Enhancement of protein, lipid and fatty acids in copepod, Oithona rigida for the improvement of growth, development and survival of early‐stage mud crab larvae ( Scylla olivacea )

Yuslan

Ghaffar

Arshad

et al. 2022

Aquaculture Research

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The copepod Oithona rigida can be used as a natural feed in rearing larvae of the mud crab Syclla olivacea. However, copepod is not readily obtainable due to their characteristics as seasonal zooplankton, causing limitation in using copepods. The objective of this study was to evaluate the nutrient transfer of enriched O. rigida in improving the growth development and survival of early‐stage mud crab (Scylla olivacea). The effects of different feeding regimes on the survival and development of S. olivacea larvae were studied in two phases of the crab larval development: Phase 1 (zoea 1 to zoea 2 stage) and Phase 2 (zoea 5 to megalopa stage). The feeding regimes were T1: O. rigida enriched with rice bran, T2: O. rigida enriched with Nannochloropsis oceanica, T3: O. rigida enriched with a mixture of rice bran and N. oceanica, and T4: Artemia. The results showed that rice bran (66.83 ± 2.25% protein and 21.98 ± 1.41% lipid) and N. oceanica (72.08 ± 2.02% protein and 18.09 ± 1.18% lipid) additives produced the best outcomes in terms of protein content and lipid content of O. rigida. A mixture of rice bran and N. oceanica (41.62%) as enrichment also improved the polyunsaturated fatty acids (PUFAs) content of O. rigida as compared with a mono diet applied such as rice bran (28.16%) and N. oceanica (31.35%). The average survival rate of S. olivacea from zoea 1 until megalopa shows that T3 (20.20 ± 1.97%) was higher than T1 (13.87 ± 0.90%), T2 (12.47 ± 1.14%) or T4 (3.13 ± 1.29%). In conclusion, improving the survival rate of crab larvae in commercial hatcheries by using precise early‐stage foods is fundamental to enhancing the seed production technology of mud crabs.

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Mud crab, Scylla tranquebarica (Fabricius, 1798), crablet grow‐out in lined ponds with different stocking densities to support soft‐shell crab production

Gunarto,

Herlinah,

Muliani

et al. 2024

J World Aquaculture Soc

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Crab stocking densities in brackish water ponds can influence crab growth rate, survival, and production volume. This study aimed to determine the optimum grow‐out stocking density for Scylla tranquebarica crablets reared in lined ponds to supply the soft‐shell crab industry. Three stocking density treatments (1, 4, and 8 ind./m2) were applied to crablets reared in lined ponds for 90 days. The crablets were fed low‐value fish (Leiognathus equula) at an initial rate of 100% of total body weight for two weeks, reduced to 3% toward the end of the study. Crablets stocked at 1 and 4 ind./m2 had a significantly (p < 0.05) higher net growth (NG) and daily growth rate (DGR) than crablets stocked at 8 ind./m2. Deformed crabs were also most common at the highest stocking density. The intermediate stocking rate achieved moderate survival and feed conversion rates, with the highest crab production volume (19.65 ± 0.10 kg/100 m2) and net income (6845.60 US$/Ha/2 crops/year). Based on these findings, a stocking rate of around 4 ind./m2 is recommended for the grow‐out of S. tranquebarica crablets in lined ponds.

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Evaluation of the nutritional quality of selected dietary ingredients for mud crab Scylla serrata of Suarashtra region in Gujarat, India

Cited by 3 publications

References 11 publications

Impacts of Habitat Quality on the Physiology, Ecology, and Economical Value of Mud Crab Scylla sp.: A Comprehensive Review

Impacts of Habitat Quality on the Physiology, Ecology, and Economical Value of Mud Crab Scylla sp.: A Comprehensive Review

Enhancement of protein, lipid and fatty acids in copepod, Oithona rigida for the improvement of growth, development and survival of early‐stage mud crab larvae ( Scylla olivacea )

Mud crab, Scylla tranquebarica (Fabricius, 1798), crablet grow‐out in lined ponds with different stocking densities to support soft‐shell crab production

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