Evaluation of limb autotomy as a promising strategy to improve production performances of mud crab (Scylla olivacea) in the soft‐shell farming system

Soft‐shell crab, a newly moulted crab having non‐calcified and hydrated soft exoskeleton, farming has been increasing tremendously in recent years throughout the world due to its high market price and consumer preferences. However, high aggressiveness and cannibalistic behaviour of mud crab limit it...

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Bibliographic Details
Published in:Aquaculture research 2020-06, Vol.51 (6), p.2555-2572
Main Authors: Rahman, Mohammad Redwanur, Asaduzzaman, Md, Zahangir, Md. Mahiuddin, Islam, SM Rashadul, Nahid, Sk Ahmad‐Al, Jahan, Durin Akter, Mahmud, Yahia, Khan, Mohammed Nurul Absar
Format: Article
Language:English
Subjects:
Ablation
Aggressive behavior
Appendages
Autotomy
Carapace
Commercial farms
Crab culture
Crabs
Crustaceans
Decapoda
Duration
Efficiency
Escape behavior
Exoskeleton
Exoskeletons
Farming
farming system
Farming systems
Farms
Feeding
Growth rate
Labour
Leg
limb autotomy
limb regeneration
Marine crustaceans
Molting
Moulting
moulting duration
Mud
mud crabs
Parameters
Performance enhancement
Scylla
Scylla olivacea
soft‐shell farming
Statistical analysis
Stocking
Stocking density
Survival
Walking
Weight
Weight gain
Width
Yield
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Summary:Soft‐shell crab, a newly moulted crab having non‐calcified and hydrated soft exoskeleton, farming has been increasing tremendously in recent years throughout the world due to its high market price and consumer preferences. However, high aggressiveness and cannibalistic behaviour of mud crab limit its culture to an individual chamber system which ultimately makes the soft‐shell mud crab farming space and labour‐intensive. Therefore, the aim of this study was to improve the efficiency of soft‐shell crab production by autotomy of the claw and/or walking legs to reduce the moulting duration and intensify the culture system through double stocking in the existing individual chamber culture system. To achieve our objectives, a series of experiment were conducted at both indoor and on‐farm levels by removing the claw and/or walking legs of Scylla olivacea for two consecutive moulting cycles. Results showed that both claw ablation significantly (p  .05) the moulting duration and carapace width, but significantly (p 
ISSN:1355-557X
1365-2109
DOI:10.1111/are.14598