Reproductive Biology on the Gonad of Female Orange Mud Crab, Scylla olivacea 
 (Herbst, 1796) from the West Coastal Water of Peninsular Malaysia

Ikhwanuddi, M.; Nur-Atika, J.; Abol-Munaf, A.B.; Muhd-Farou, H.

doi:10.3923/ajcb.2014.14.22

Cited by 19 publications

(12 citation statements)

References 5 publications

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“…Islam et al [ 18 ] reported that the color of mature or tertiary vitellogenesis stages was yellow to orange, not deep or black orange; the only exception is S. paramamosain species. In accordance with Quinitio et al [ 33 ], this color variation may happen due to the diet intake of the crab; however, Ikhwanuddin et al [ 34 ] elaborated that the changes of ovarian coloration may occur due to the accumulation of lipid in the form of yolks in the oocytes.…”

Section: Resultssupporting

confidence: 64%

Reproductive biology of mud crabs (Scylla olivacea) collected from Paikgachha, Khulna, Bangladesh

Paul¹,

Islam²,

Khatun³

et al. 2021

J Adv Vet Anim Res

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Objective: This study was carried out to estimate the sex ratio, maturity size, gonadosomatic index (GSI), and peak breeding season of mud crabs. Materials and Methods: Samples were collected randomly from the estuary and river of the study area. Sampling was carried out monthly from April to September at every full moon during one high tide. A total number of 240 specimens were sampled, where 53 individuals were hermaphrodite. The crabs were shifted alive to the biology and histology lab for detailed biological study. Sex was determined. Male and female sex ratio and breeding season were also investigated. Results: The male:female ratio was 1:0.96 and the ovarian development was categorized into five stages based on internal observations, viz. immature (stage I), underdeveloped (stage II), early developed (stage III), late developed (stage IV), and mature (stage V). The maturity percentages were 37%, 19%, 13%, 11%, and 20%, respectively. 50% maturation was estimated at 82.36 mm internal carapace width (ICW). The highest mean GSI value was 7.97 ± 3.03. The mature stage was found in all the working periods. This shows that females have activated ovaries in all the working months, and the species are continuous breeders. A higher frequency of vitellogenic ovary and higher GSI value were found in September. The maximum GSI value was found in the size group 70–79 mm. Conclusion: The study shows that the capture from the wild sources of mud crabs without any regulation can threaten the population structure. The capture of female mud crabs should be more than 82.36 mm ICW, which will help conserve and protect young crabs.

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Section: Resultssupporting

confidence: 64%

Reproductive biology of mud crabs (Scylla olivacea) collected from Paikgachha, Khulna, Bangladesh

Paul¹,

Islam²,

Khatun³

et al. 2021

J Adv Vet Anim Res

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“…Crab samples were cold-anesthetized and dissected for gamete collection. Stage 4 ovary with reddish orange colour (Ikhwanuddin et al, 2014;Quinitio et al, 2007) were collected from the abdominal cavity ( Fig. 1), placed into Petri dishes provided with Ca-F saline medium and cut into small pieces to obtain ovary mass.…”

Section: Methodsologymentioning

confidence: 99%

Artificial Crablets Production of Orange Mud Crab, Scylla olivacea (Herbst, 1796) Through in-vitro Fertilization Technique

Noorbaidur¹,

Ikhwanuddi²

2015

J. of Fisheries and Aquatic Science

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Crablets production in mud crab, genus Scylla is highly depends on the depleted wild crablets supply. Artificial crablets production through in-vitro fertilization technique can be an alternative for the crablets production of this mud crab. Therefore, this study was conducted to explore the artificial crablets production through in-vitro fertilization technique on orange mud crab, Scylla olivacea through the determination of (1) Fertilization rate and (2) Embryonic developments from the manipulation of sperm mass with Stage 4 ovary. The sperm mass were collected from the spermathecae of mature females, as well as from the vas deferens of males and allowed to fertilize the Stage 4 ovary in the Ca-F saline medium. Fertilized ovary were incubated in artificial seawater with controlled salinity (28-30 ppt) and temperature (28-30°C in water bath). Observation on fertilization rate and embryonic development were observed daily. Fertilization Membrane (FM) was developed when the ovary was fertilized. However, the embryos could only develop until Day 5 at most. Subsequently, FM could not be maintained and started to deteriorate resulting the embryos to lose their form. Further development could not be observed after Day 5. Manipulation of sperm from vas deferens (male) shows lower fertilization rate than spermathecae (female). Present study has proven that artificial crablets production S. olivacea through in-vitro fertilization technique from the manipulation of sperm mass with Stage 4 ovary was a success.

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“…For example, efforts put into perfecting the intensive culture of Litopenaeus vannamei since 1973 have led to widespread culture around the world (Briggs et al, 2004). However, the inadequate knowledge about the breeding technology for commercially valuable crabs (e.g., Scylla olivacea) has staggered the growth of the industries as its captive culture relies heavily on wildcaught seedlings and gravid females (Ikhwanuddin et al, 2014). Thus, for every potential future seafood candidate, information about their biological and culture techniques must be researched to attain sustainable mass production.…”

Section: Availability Of Biological and Technical Knowledgementioning

confidence: 99%

The Contributions of Shellfish Aquaculture to Global Food Security: Assessing Its Characteristics From a Future Food Perspective

et al. 2021

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The United Nation’s 2030 development agenda adopted in 2015 outlines 17 Sustainable Development Goals (SDGs), and the organization has continued to put food security in the center of its vocalization. Aquaculture is currently the fastest-growing food production sector globally and a sustainable option for attaining food security. Food as a basic necessity for man’s survival is always a timely issue. Hence, owing to aquaculture’s unique role, it is expected that the demand for aquatic products (especially seafood) will continue to increase due to geometric population growth. Many seafood products are among the critical protein sources in the world. This is partly because they have micronutrients and essential fatty acids that are not present in land-based protein sources. According to the Food and Agriculture Organization, shellfish is one of the main cultured aquaculture groups in the world. Hence, the development of shellfish aquaculture has an important role in sustainable food supply and food security. In this article, an overview of the current and projected contributions of shellfish aquaculture to global food security is presented. Apparently, shellfish aquaculture in the next few decades will have to be intensified to bridge the gap between demand and supply in a cost-effective manner. Also, food waste would have to be reduced and natural resources should be used more efficiently to minimize the negative impacts on aquaculture on the environment.

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Reproductive Biology on the Gonad of Female Orange Mud Crab, Scylla olivacea (Herbst, 1796) from the West Coastal Water of Peninsular Malaysia

Cited by 19 publications

References 5 publications

Reproductive biology of mud crabs (Scylla olivacea) collected from Paikgachha, Khulna, Bangladesh

Reproductive biology of mud crabs (Scylla olivacea) collected from Paikgachha, Khulna, Bangladesh

Artificial Crablets Production of Orange Mud Crab, Scylla olivacea (Herbst, 1796) Through in-vitro Fertilization Technique

The Contributions of Shellfish Aquaculture to Global Food Security: Assessing Its Characteristics From a Future Food Perspective

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