Development of nursery culture techniques for the mud crab Scylla paramamosain (Estampador)

Út, Vũ Ngọc; Vay, Lewis Le; Nghia, Truong Trong; Hạnh, Trần Thị Hồng

doi:10.1111/j.1365-2109.2006.01608.x

Cited by 51 publications

(52 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Thus, it appears that intraspecific interactions are not a factor controlling the length of the 8th and 9th carapace spines, at least under the rearing conditions tested, but may be influenced by exposure to predators in natural habitats. Ut et al (2007) reported that high stocking densities for Scylla paramamosain in nursery tanks resulted in low survival but increased growth and apparent fitness in those that survived. In the present study, frontal median spine (FMSH) length differed between all rearing treatments, wild crabs possessing the longest and HRsolitary crabs having the shortest FMS.…”

Section: Discussionmentioning

confidence: 98%

“…Recent advances in Scylla spp. culture include the development of broodstock technology (Millamena and Quinitio 2000), mass seed production (Heasman and Fielder 1983;Hamasaki et al 2002;Quinitio et al 2001;Nghia et al 2007), development of nursery technology Ut et al 2007) and the closure of the life cycle of Scylla serrata (Quinitio et al, in press). Commercial hatchery production is now becoming a reality (Fushimi and Watanabe 1999;Wang et al 2005) and will reduce dependence on wild stocks and increase supply of juveniles for pond culture.…”

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Phenotypic differences between hatchery-reared and wild mud crabs, Scylla Serrata, and the effects of conditioning

2010

Self Cite

View full text Add to dashboard Cite

Hatchery-reared animals for stock enhancement should be competent to survive and grow at rates equivalent to those of wild conspecifics. However, morphological differences are often observed, and pre-conditioning steps may be required to improve the fitness of hatchery-reared juveniles prior to release. In the present study, hatchery-reared Scylla serrata juveniles were reared either individually (HR-solitary) or groups in tanks (HR-communal), the latter group being exposed to intraspecific competition and foraging for food. After 21 days, both groups were compared to similar size wild-caught juveniles in terms of morphometric measurements of carapace spination, abnormalities and carapace colouration. There were some limited significant differences between HR-communal crabs and HR-solitary crabs in terms of length of 8th and 9th lateral spines and in body-weightcarapace width ratio, but both treatments differed from wild crabs, which were heavier and had longer carapace spines for their size. In contrast, both HR treatments exhibited common abnormalities including deformities in the shape of the abdomen, in particular occurrence of an asymmetrical telson or a deeply folded telson. In all cases, abnormalities persisted through moulting. Initially, carapace colour differed in all measures of colour between HR and wild crabs. However, these differences reduced after a period of 4-8 days of conditioning on coloured tank backgrounds or dark sand or mud backgrounds, without moulting. Similarly, hatchery-reared crabs exhibited very limited burying behaviour on first exposure to sediment, but this increased to levels observed in wild crabs within 2-4 days. Thus, short-term conditioning of hatchery-reared crabs on dark sediments may be effective in increasing predator avoidance and survivorship in released animals, and present results suggest that this can be achieved after relatively short periods of 1 week or less.

show abstract

Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

Phenotypic differences between hatchery-reared and wild mud crabs, Scylla Serrata, and the effects of conditioning

2010

Self Cite

View full text Add to dashboard Cite

show abstract

“…It is also beneficial to mudcrab growers for they preferred bigger crablets, though more expensive than smaller crablets, for stocking in grow-out ponds (Ut et al 2007). Technology adoption by smallholder operators, however, takes time and sustaining the same hinges on many factors.…”

Section: Discussionmentioning

confidence: 99%

Community-Based Technology Transfer in Rural Aquaculture: The Case of Mudcrab Scylla serrata Nursery in Ponds in Northern Samar, Central Philippines

Baticados

Agbayani

Quinitio

2014

AMBIO

View full text Add to dashboard Cite

Finding aquaculture development approaches to open up livelihood opportunities for the rural poor and in mainstreaming smallholder fish farmers to reduce poverty remain a challenge. This paper examines the communitybased technology transfer mechanism of mudcrab nursery in ponds and its socioeconomic impacts on smallholder mudcrab growers in Northern Samar, Philippines. Results indicated that the technology is a viable enterprise done by a straight culture system method, which is the rearing of crablets from \1.0 to 4.0 cm for 42 days, or by-phases. However, technology adoption hinges on many factors like area ownership, farm distance from household, and market including the type of strategy needed to enhance technology uptake. Collaboration among research and development institutions and local partners is critical in training and empowering rural communities to adopt aquaculture technologies.

show abstract

“…Salah satu penyebabnya adalah tingginya tingkat kanibalisme (sintasan yang rendah, rata-rata < 60%), dari saat memasuki stadia krablet-1 hingga ukuran yang siap tebar di tambak pembesaran (lebar karapas  1,5 cm) (Gunarto, 2012). Sifat kanibal kepiting bakau mulai muncul pada stadia megalopa karena saat itu sudah memiliki capit, dan tertinggi terjadi pada saat stadia krablet selama masa pendederan dengan kepadatan yang relatif tinggi (Ut et al, 2007). Beberapa upaya yang telah dilakukan untuk menekan tingkat kanibalisme pada pendederan krablet kepiting bakau ini antara lain penggunaan shelter (Cerezo, 2001;Gunarto, 2012), pengaturan kepadatan, dan jenis pakan (Ut et al, 2007).…”

Section: Pengaruh Kadar Triptopan Pakan Terhadap Pertumbuhan Dan Sintunclassified

“…layak bagi kehidupan krablet kepiting bakau (Abiera et al, 2007;Rodriguez et al, 2007;Ut et al, 2007;Shelley & Lovatelli, 2011).…”

Section: (Usman)mentioning

confidence: 99%

PENGARUH KADAR TRIPTOPAN PAKAN TERHADAP PERTUMBUHAN DAN SINTASAN KRABLET KEPITING BAKAU, Scylla serrata SELAMA MASA PENDEDERAN

Usman

Kamaruddin

Laining

2017

Jurnal Riset Akuakultur

View full text Add to dashboard Cite

ABSTRAKKepiting bakau bersifat kanibal dan cenderung memiliki laju pertumbuhan yang lambat ketika diberi pakan buatan. Triptopan adalah salah satu asam amino esensial untuk pertumbuhan dan merupakan prekursor pembentukan serotonin yang dapat mengontrol sifat agresif pada beberapa vertebrata. Penelitian ini bertujuan untuk mendapatkan dosis optimum triptopan pakan terhadap pertumbuhan dan sintasan krablet selama masa pendederan. Empat dosis penambahan L-triptopan dalam pakan yaitu: 0% (A); 0,25% (B); 0,5% (C); dan 1,0% (D) dengan kadar triptopan dalam pakan berturut-turut 0,41%; 0,52%; 0,67%; dan 0,96%; serta kontrol berupa pakan rebon kering (E) yang mengandung triptopan sebanyak 0,79%. Hewan uji yang digunakan adalah krablet kepiting bakau berumur 3-5 hari sejak memasuki stadia krablet. Krablet dipelihara dalam bak fiber berukuran 1,0 m x 1,0 m x 0,5 m sebanyak 15 unit dengan kepadatan masing-masing 50 ekor/m 2 . Selama lima minggu pemeliharaan, krablet diberi pakan uji sebanyak 30%-15%/hari. Hasil penelitian menunjukkan bahwa krablet yang diberi pakan mengandung triptopan 0,67% menunjukkan laju pertumbuhan tertinggi dan berbeda nyata (P<0,05) dengan krablet yang diberi pakan mengandung triptopan 0,41%. Rasio efisiensi protein tertinggi juga didapatkan pada krablet yang diberi pakan mengandung triptopan 0,67% dan berbeda nyata (P<0,05) dengan krablet yang diberi pakan rebon. Sintasan, konsumsi pakan harian, rasio konversi pakan, dan komposisi proksimat total tubuh krablet relatif sama di antara perlakuan, meskipun ada kecenderungan terbaik pada krablet yang diberi pakan mengandung 0,67% triptopan.

show abstract

Development of nursery culture techniques for the mud crab Scylla paramamosain (Estampador)

Cited by 51 publications

References 24 publications

Phenotypic differences between hatchery-reared and wild mud crabs, Scylla Serrata, and the effects of conditioning

Phenotypic differences between hatchery-reared and wild mud crabs, Scylla Serrata, and the effects of conditioning

Community-Based Technology Transfer in Rural Aquaculture: The Case of Mudcrab Scylla serrata Nursery in Ponds in Northern Samar, Central Philippines

PENGARUH KADAR TRIPTOPAN PAKAN TERHADAP PERTUMBUHAN DAN SINTASAN KRABLET KEPITING BAKAU, Scylla serrata SELAMA MASA PENDEDERAN

Contact Info

Product

Resources

About