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Fazhan H, Waiho K, Shu-Chien AC, Wang Y, Ikhwanuddin M, Abualreesh MH, Kasan NA, Wu Q, Muda S, Sor CS, Jalilah M. Fine sand facilitates egg extrusion and improves reproductive output in female mud crab genus Scylla. PeerJ 2022; 10:e13961. [PMID: 36032946 PMCID: PMC9415431 DOI: 10.7717/peerj.13961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 08/07/2022] [Indexed: 01/19/2023] Open
Abstract
Mud crabs (genus Scylla) are gaining attention as potential aquaculture species due to their lucrative market price and high demand. One of the essential components of mud crab culture is broodstock quality. The optimisation of mud crab broodstock culture currently focused on its nutritional aspects and common rearing parameters, including stocking density and temperature. The use of sandy substrate to induce egg extrusion in female Scylla broodstock is common; however, its optimisation has never been conducted. This study investigated (1) the substrate association of two Scylla species (S. olivacea, S. paramamosain) during broodstock conditioning until egg extrusion when the choices of fine (66.99 ± 14.48 μm) and coarse (656.17 ± 38.13 μm) sands were given; (2) the female reproductive output when S. olivacea females were individually exposed to either fine sand, coarse sand, or no sand treatments. Females, spawners and non-spawners, of S. olivacea and S. paramamosain were associated with fine sand and none was observed to bury in the coarse sand tray. The occurrence of egg extrusion was not significantly different between species but moderately associated with the duration of visits (stayed in sand for 1 d, 2 d, ≥3 d). The final incubation period in the sand tray was more than 2 days in all cases, except for one female S. paramamosain (buried in the sand for 1 day prior to egg extrusion). When no choice was available, the highest percentage (58.3%) of females extruded eggs in fine sand treatment, followed by coarse sand treatment (33.3%), and no sand treatment (8.3%). Sand type influenced the weight of egg clutch, total egg number, fecundity, and clutch size. These results suggest that fine sand (<70 μm) substrate should be incorporated into Scylla broodstock rearing to maximise female reproductive output.
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Affiliation(s)
- Hanafiah Fazhan
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia,Shantou University-Universiti Malaysia Terengganu (STU-UMT) Joint Shellfish Research Laboratory, Shantou University, Shantou, Guangdong, China
| | - Khor Waiho
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia,Shantou University-Universiti Malaysia Terengganu (STU-UMT) Joint Shellfish Research Laboratory, Shantou University, Shantou, Guangdong, China,Centre for Chemical Biology, Universiti Sains Malaysia, Minden, Penang, Malaysia
| | - Alexander Chong Shu-Chien
- Centre for Chemical Biology, Universiti Sains Malaysia, Minden, Penang, Malaysia,School of Biological Sciences, Universiti Sains Malaysia, Minden, Penang, Malaysia
| | - Youji Wang
- International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China
| | - Mhd Ikhwanuddin
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia,Shantou University-Universiti Malaysia Terengganu (STU-UMT) Joint Shellfish Research Laboratory, Shantou University, Shantou, Guangdong, China
| | - Muyassar H. Abualreesh
- Department of Marine Biology, Faculty of Marine Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Nor Azman Kasan
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia,Shantou University-Universiti Malaysia Terengganu (STU-UMT) Joint Shellfish Research Laboratory, Shantou University, Shantou, Guangdong, China
| | - Qingyang Wu
- Key Laboratory of Applied Marine Biotechnology, Ministry of Education, Ningbo University, Ningbo, Zhejiang, China,School of Marine Science, Ningbo University, Ningbo, Zhejiang, China
| | - Sabri Muda
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia
| | - Chin Siang Sor
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia,Sayap Jaya Sdn Bhd, Selangor, Malaysia
| | - Mohamad Jalilah
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia
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Li Y, Li R, Ye Y, Mu C, Wang C. 1H NMR metabolic profiling revealed characteristic metabolites in mud crab Scylla paramamosain for different geographical origins. JOURNAL OF APPLIED ANIMAL RESEARCH 2019. [DOI: 10.1080/09712119.2019.1623802] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Yongliang Li
- Key Laboratory of Applied Marine Biotechnology, Chinese Ministry of Education, Ningbo University, Ningbo, People’s Republic of China
- Collaborative Innovation Center for Zhejiang Marine High-efficiency and Healthy Aquaculture, Ningbo, People’s Republic of China
| | - Ronghua Li
- Key Laboratory of Applied Marine Biotechnology, Chinese Ministry of Education, Ningbo University, Ningbo, People’s Republic of China
| | - Yangfang Ye
- Key Laboratory of Applied Marine Biotechnology, Chinese Ministry of Education, Ningbo University, Ningbo, People’s Republic of China
| | - Changkao Mu
- Key Laboratory of Applied Marine Biotechnology, Chinese Ministry of Education, Ningbo University, Ningbo, People’s Republic of China
| | - Chunlin Wang
- Key Laboratory of Applied Marine Biotechnology, Chinese Ministry of Education, Ningbo University, Ningbo, People’s Republic of China
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