Comparative analysis of growth performance between female and male mud crab Scylla paramamosain crablets: Evidences from a four-month successive growth experiment

Shi, Xi; Lu, Jianxue; Wu, Qingping; Waiho, Khor; Aweya, Jude Juventus; Fazhan, Hanafiah; Zhang, Yueling; Li, Shengkang; Zheng, Huaiping; Lin, Fan; You, Cuihong; Ikhwanuddin, Mhd; Ma, Hongyu

doi:10.1016/j.aquaculture.2019.02.062

Cited by 59 publications

(37 citation statements)

References 38 publications

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“…Mud crabs belonging to the genus Scylla are distributed along the Indo-West-Pacific region and are divided into four distinct species, namely S. serrata, S. olivacea, S. tranquebarica and S. paramamosain (Keenan, Davie & Mann, 1998). All four species are economically important and highly sought after due to their delicate meat, making them important resources in both artisanal fisheries and aquaculture sector around the Indo-West-Pacific region Shi et al, 2019), with a global capture production of more than 20,000 t and aquaculture production of more than 100,000 t within the last decade (FAO, 2018).…”

Section: Introductionmentioning

confidence: 99%

Morphological descriptions and morphometric discriminant function analysis reveal an additional four groups of Scylla spp

Fazhan

Waiho

Quinitio

et al. 2020

PeerJ

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There are four species of mud crabs within the genus Scylla, and most of them live sympatrically in the equatorial region. Apart from a report in Japan about the finding of a natural Scylla hybrid more than a decade ago after the division of genus Scylla into four species by Keenan, Davie & Mann (1998), no subsequent sighting was found. Thus, this study investigates the possible natural occurrence of potential hybridization among Scylla species in the wild. A total of 76,211 individuals from mud crab landing sites around the Malacca Straits, South China Sea and Sulu Sea were screened. In addition to the four-purebred species, four groups (SH 1, n = 2, 627; SH 2, n = 136; SH 3, n = 1; SH 4, n = 2) with intermediate characteristics were found, mostly at Sulu Sea. Discriminant Function Analysis revealed that all Scylla species, including SH 1 - 4, are distinguishable via their morphometric ratios. The most powerful discriminant ratios for each character and the top five discriminant ratios of males and females were suggested. The carapace width of SH 1 males and females were significantly smaller than pure species. Based on the discriminant ratios and the description of morphological characters, we hypothesize that the additional four groups of Scylla with intermediate characteristics could be presumed hybrids. Future work at the molecular level is urgently needed to validate this postulate.

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Section: Introductionmentioning

confidence: 99%

Morphological descriptions and morphometric discriminant function analysis reveal an additional four groups of Scylla spp

Fazhan

Waiho

Quinitio

et al. 2020

PeerJ

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“…Although the culture of S. paramamosain has grown continuously for years, there are still very low yields, only 15–60 kg/667 m 2 a year, which is unable to meet ever increasing market demand [ 19 – 21 ]. It is of urgent importance to improve the artificial breeding and breeding technology of S. paramamosain by improving the overwintering environment [ 22 ]. Therefore, understanding light intensity conditions required during the overwintering period are the focus of this study.…”

Section: Introductionmentioning

confidence: 99%

Transcriptome analysis of genes and pathways associated with metabolism in Scylla paramamosain under different light intensities during indoor overwintering

Zhou

Wang

et al. 2020

BMC Genomics

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Background Scylla paramamosain is one of the commercially crucial marine crustaceans belonging to the genus Scylla, which is commonly distributed along the coasts of China, Vietnam, and Japan. Genomic and transcriptomic data are scarce for the mud crab. Light intensity is one of the ecological factors that affect S. paramamosain during indoor overwintering. To understand the energy metabolism mechanism adapted to light intensity, we analyzed the transcriptome of S. paramamosain hepatopancreas in response to different light intensities (0, 1.43, 40.31 μmol·m− 2·s− 1). Results A total of 5052 differentially expressed genes were identified in low light group (LL group, 3104 genes were up-regulated and 1948 genes were down-regulated). A total of 7403 differentially expressed genes were identified in high light group (HL group, 5262 genes were up-regulated and 2141 genes were down-regulated). S. paramamosain adapts to different light intensity environments through the regulation of amino acids, fatty acids, carbon and energy metabolism. Different light intensities had a strong impact on the energy generation of S. paramamosain by influencing oxygen consumption rate, aerobic respiration, glycolysis/gluconeogenesis pathway, the citrate cycle (TCA cycle) and fatty acid degradation. Conclusion Low light is more conducive to the survival of S. paramamosain, which needs to produce and consume relatively less energy to sustain physiological activities. In contrast, S. paramamosain produced more energy to adapt to the pressure of high light intensities. The findings of the study add to the knowledge of regulatory mechanisms related to S. paramamosain metabolism under different light intensities.

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“…While the farming and fishing of S. paramamosain have grown continuously for years, the yield (~15–60 kg/667 m 2 per annum) is inadequate given growing market demand (Shi et al., 2018; Zhou et al., 2020). Therefore, improved artificial breeding and farming techniques for S. paramamosain are urgently needed (Shi et al., 2019). S. paramamosain cultivation is based on seedling rearing, and overwintering is a key factor in this process; overwintering also affects S. paramamosain quality.…”

Section: Introductionmentioning

confidence: 99%

GC‐MS‐based metabolomics reveal that light intensity during indoor overwintering affects the metabolism of Scylla paramamosain

Zhou

He³

et al. 2020

Aquac. Res.

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The mud crab (Scylla paramamosain) is among the most economically important seawater crustacean species. Overwintering is one of an important stage for aquatic animals, and light intensity has an important effect on the conservation of Scylla paramamosain during overwintering. Here, S. paramamosain were exposed to three different light intensities (0, 1.43 and 40.31 μmol m−2 s−1) for four months. Then, GC‐MS‐based metabolomic analyses of the hepatopancreas were performed to assess differences in the metabolites produced by S. paramamosain exposed to different light intensities. The weight gain rate (WGR) was also compared among treatment groups. The LL group displayed significantly greater WGRs than the HL group. A total of 117 and 128 significantly different metabolites (SDMs) were identified in LL group and HL group respectively (VIP > 1 and p < .05). The identified SDMs were associated with the amino acid metabolism, the carbohydrate metabolism, the fatty acid metabolism, the nucleotide metabolism and membrane transport. The results suggested that light intensity affected the metabolic pathways in S. paramamosain by influencing the citrate cycle (TCA cycle), the biosynthesis of amino acids and unsaturated fatty acids, ABC transporters, and the purine metabolism. Further integrated analyses of key metabolic pathways showed that the metabolism of S. paramamosain was more vigorous under light conditions.

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Comparative analysis of growth performance between female and male mud crab Scylla paramamosain crablets: Evidences from a four-month successive growth experiment

Cited by 59 publications

References 38 publications

Morphological descriptions and morphometric discriminant function analysis reveal an additional four groups of Scylla spp

Morphological descriptions and morphometric discriminant function analysis reveal an additional four groups of Scylla spp

Transcriptome analysis of genes and pathways associated with metabolism in Scylla paramamosain under different light intensities during indoor overwintering

GC‐MS‐based metabolomics reveal that light intensity during indoor overwintering affects the metabolism of Scylla paramamosain

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