Production of juvenile mud crabs, Scylla serrata: Captive breeding, larviculture and nursery production
The mud crab, Scylla serrata, is one of the most traded and valuable seafood in several Indo-Pacific countries. Most challenges in mud crab hatchery production are rooted not only in the mass production of the megalopa or crab instar 1, but also in the production of juveniles of stockable size in th...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-02-01
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| Series: | Aquaculture Reports |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352513421004208 |
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| author | Balasubramanian Changaramkumarath Paran Balamurugan Jeyagobi Vijayan Koyadan Kizhakedath Jose Antony Biju Francis Panantharayil Sudhayam Shyne Anand Aravind Radhakrishnapillai Christina Lalramchhani Sudalayandi Kannappan Rameshbabu Duraisamy Marimuthu Sivagnanam Paulpandi |
| author_facet | Balasubramanian Changaramkumarath Paran Balamurugan Jeyagobi Vijayan Koyadan Kizhakedath Jose Antony Biju Francis Panantharayil Sudhayam Shyne Anand Aravind Radhakrishnapillai Christina Lalramchhani Sudalayandi Kannappan Rameshbabu Duraisamy Marimuthu Sivagnanam Paulpandi |
| author_sort | Balasubramanian Changaramkumarath Paran |
| collection | DOAJ |
| description | The mud crab, Scylla serrata, is one of the most traded and valuable seafood in several Indo-Pacific countries. Most challenges in mud crab hatchery production are rooted not only in the mass production of the megalopa or crab instar 1, but also in the production of juveniles of stockable size in the grow-out production system. In the present study, large-scale production of S. serrata in hatchery was carried out to obtain fundamental data for developing hatchery production of this species. Additionally, the spawning characteristics and reproductive performance of wild broodstocks under captivity were studied to facilitate the management of brood stocks in the hatchery. Adult wild broodstock (n = 202), obtained from the inshore fishery from 2015 to 2019 were eyestalk ablated to promote reproductive maturation. Almost 50% of eyestalk ablated animals successfully spawned within a latency period of ~36 days. The crabs were found to be highly fecund in terms of zoeal production (3.84 × 106 ± 0.65 × 106 zoea 1) and captive spawning was achieved throughout the year, with a peak in November. Juvenile production was carried out in three phases: (1) Zoea 1 to megalopa (3 days old); (2) Pre-nursery phase, megalopa (3 days old), to ~3 g; and (3) nursery phase, ~3 g, to 2 8 g BW. In the first phase, a series of experiments were carried out on pilot scale and at the commercial level to evaluate optimum rearing conditions. In the pilot-scale studies, the highest survival up to the megalopa stage was obtained at lower stocking densities (50–75 larvae/L), and survival declined progressively at higher rearing densities. A series of trials was carried out at commercial scale (5000 L fiberglass tank), and survival from Zoea 1 to megalopa ranged from 0.6% to 7.9%, with a mean of 3.3%. This study also demonstrated that rotifer grown on commercial algal concentrate could be used in larviculture without compromising the survival rate. The second phase of rearing experiment (pre-nursery and nursery) was extended for sixty-eight days. During the pre-nursery phase, the effect of different rearing systems was evaluated: hapa net constructed either in an earthen pond or in open water bodies (lagoon) and direct stocking of megalopa in an earthen pond. During the pre-nursery phase, the highest survival was obtained in the hapa constructed in the earthen pond (60.5 ± 19.9%), whereas a significantly higher growth rate was obtained when megalopa was reared directly in the pond (5.9 ± 2.1 g). During the nursery phase, crabs were reared at 5 crabs/m2 and 10 crabs/m2; crabs reared at the lower stocking density attained significantly higher growth (28.2 ± 2.02 g), without significant differences in crab survival between these rearing densities. These results advance the method for the large-scale production of stockable juveniles of the mud crab, S. serrata |
| first_indexed | 2024-12-20T16:06:38Z |
| format | Article |
| id | doaj.art-096b969b30954baca6649a7313156cf7 |
| institution | Directory Open Access Journal |
| issn | 2352-5134 |
| language | English |
| last_indexed | 2024-12-20T16:06:38Z |
| publishDate | 2022-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Aquaculture Reports |
| spelling | doaj.art-096b969b30954baca6649a7313156cf72022-12-21T19:34:06ZengElsevierAquaculture Reports2352-51342022-02-0122101003Production of juvenile mud crabs, Scylla serrata: Captive breeding, larviculture and nursery productionBalasubramanian Changaramkumarath Paran0Balamurugan Jeyagobi1Vijayan Koyadan Kizhakedath2Jose Antony3Biju Francis4Panantharayil Sudhayam Shyne Anand5Aravind Radhakrishnapillai6Christina Lalramchhani7Sudalayandi Kannappan8Rameshbabu Duraisamy Marimuthu9Sivagnanam Paulpandi10Corresponding author.; ICAR-Central Institute of Brackishwater Aquaculture, 75 Santhome High Road, RA Puram, Chennai 600 028, IndiaICAR-Central Institute of Brackishwater Aquaculture, 75 Santhome High Road, RA Puram, Chennai 600 028, IndiaICAR-Central Institute of Brackishwater Aquaculture, 75 Santhome High Road, RA Puram, Chennai 600 028, IndiaICAR-Central Institute of Brackishwater Aquaculture, 75 Santhome High Road, RA Puram, Chennai 600 028, IndiaICAR-Central Institute of Brackishwater Aquaculture, 75 Santhome High Road, RA Puram, Chennai 600 028, IndiaICAR-Central Institute of Brackishwater Aquaculture, 75 Santhome High Road, RA Puram, Chennai 600 028, IndiaICAR-Central Institute of Brackishwater Aquaculture, 75 Santhome High Road, RA Puram, Chennai 600 028, IndiaICAR-Central Institute of Brackishwater Aquaculture, 75 Santhome High Road, RA Puram, Chennai 600 028, IndiaICAR-Central Institute of Brackishwater Aquaculture, 75 Santhome High Road, RA Puram, Chennai 600 028, IndiaICAR-Central Institute of Brackishwater Aquaculture, 75 Santhome High Road, RA Puram, Chennai 600 028, IndiaICAR-Central Institute of Brackishwater Aquaculture, 75 Santhome High Road, RA Puram, Chennai 600 028, IndiaThe mud crab, Scylla serrata, is one of the most traded and valuable seafood in several Indo-Pacific countries. Most challenges in mud crab hatchery production are rooted not only in the mass production of the megalopa or crab instar 1, but also in the production of juveniles of stockable size in the grow-out production system. In the present study, large-scale production of S. serrata in hatchery was carried out to obtain fundamental data for developing hatchery production of this species. Additionally, the spawning characteristics and reproductive performance of wild broodstocks under captivity were studied to facilitate the management of brood stocks in the hatchery. Adult wild broodstock (n = 202), obtained from the inshore fishery from 2015 to 2019 were eyestalk ablated to promote reproductive maturation. Almost 50% of eyestalk ablated animals successfully spawned within a latency period of ~36 days. The crabs were found to be highly fecund in terms of zoeal production (3.84 × 106 ± 0.65 × 106 zoea 1) and captive spawning was achieved throughout the year, with a peak in November. Juvenile production was carried out in three phases: (1) Zoea 1 to megalopa (3 days old); (2) Pre-nursery phase, megalopa (3 days old), to ~3 g; and (3) nursery phase, ~3 g, to 2 8 g BW. In the first phase, a series of experiments were carried out on pilot scale and at the commercial level to evaluate optimum rearing conditions. In the pilot-scale studies, the highest survival up to the megalopa stage was obtained at lower stocking densities (50–75 larvae/L), and survival declined progressively at higher rearing densities. A series of trials was carried out at commercial scale (5000 L fiberglass tank), and survival from Zoea 1 to megalopa ranged from 0.6% to 7.9%, with a mean of 3.3%. This study also demonstrated that rotifer grown on commercial algal concentrate could be used in larviculture without compromising the survival rate. The second phase of rearing experiment (pre-nursery and nursery) was extended for sixty-eight days. During the pre-nursery phase, the effect of different rearing systems was evaluated: hapa net constructed either in an earthen pond or in open water bodies (lagoon) and direct stocking of megalopa in an earthen pond. During the pre-nursery phase, the highest survival was obtained in the hapa constructed in the earthen pond (60.5 ± 19.9%), whereas a significantly higher growth rate was obtained when megalopa was reared directly in the pond (5.9 ± 2.1 g). During the nursery phase, crabs were reared at 5 crabs/m2 and 10 crabs/m2; crabs reared at the lower stocking density attained significantly higher growth (28.2 ± 2.02 g), without significant differences in crab survival between these rearing densities. These results advance the method for the large-scale production of stockable juveniles of the mud crab, S. serratahttp://www.sciencedirect.com/science/article/pii/S2352513421004208Mud crabsScylla serrataStockable juvenilesZoeaMegalopa |
| spellingShingle | Balasubramanian Changaramkumarath Paran Balamurugan Jeyagobi Vijayan Koyadan Kizhakedath Jose Antony Biju Francis Panantharayil Sudhayam Shyne Anand Aravind Radhakrishnapillai Christina Lalramchhani Sudalayandi Kannappan Rameshbabu Duraisamy Marimuthu Sivagnanam Paulpandi Production of juvenile mud crabs, Scylla serrata: Captive breeding, larviculture and nursery production Aquaculture Reports Mud crabs Scylla serrata Stockable juveniles Zoea Megalopa |
| title | Production of juvenile mud crabs, Scylla serrata: Captive breeding, larviculture and nursery production |
| title_full | Production of juvenile mud crabs, Scylla serrata: Captive breeding, larviculture and nursery production |
| title_fullStr | Production of juvenile mud crabs, Scylla serrata: Captive breeding, larviculture and nursery production |
| title_full_unstemmed | Production of juvenile mud crabs, Scylla serrata: Captive breeding, larviculture and nursery production |
| title_short | Production of juvenile mud crabs, Scylla serrata: Captive breeding, larviculture and nursery production |
| title_sort | production of juvenile mud crabs scylla serrata captive breeding larviculture and nursery production |
| topic | Mud crabs Scylla serrata Stockable juveniles Zoea Megalopa |
| url | http://www.sciencedirect.com/science/article/pii/S2352513421004208 |
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