Effect of Water Salinity on the External Morphology of Ovarian Maturation Stages of Orange Mud Crab, Scylla olivacea (Herbst, 1796) in Captivity

Amin-Safwan, Adnan; Muhd-Farouk, Harman; Musa, Nadirah; Ikhwanuddin, Mhd

doi:10.3923/pjbs.2016.219.226

Cited by 14 publications

(8 citation statements)

References 14 publications

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“…1 and 2 . The crabs were acclimatised and experiments processed in salinity 20 ppt ( Amin et al 2016 , 2018 ). The maintenance of the crabs was based on the previous published methods ( Azra & Ikhwanuddin 2015 , 2016 ; Abol-Munafi et al 2017 ).…”

Section: Methodsmentioning

confidence: 99%

Fatty Acid Composition of Hepatopancreas and Gonads in Both Sexes of Orange Mud Crab, Scylla olivacea Cultured at Various Water Flow Velocities

Taufik

Shahrul

Nordin

et al. 2020

TLSR

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Nutritional quality of the hepatopancreas and gonads of orange portunid mud crab, Scylla olivacea was evaluated for each gender under four treatment of different water velocities (0, 20, 40 and 60 cm s −1 ), in terms of nutrient reserve and nutrient for reproduction. About 56 crabs were used in this study in which fatty acids composition was analysed using gas chromatography mass-spectrometry (GC-MS). For hepatopancreas analysis, monounsaturated fatty acids (MUFAs) were present in the highest fatty acids concentration, followed by polyunsaturated fatty acids (PUFAs) and, saturated fatty acids (SFAs). However, long-chain polyunsaturated fatty acids (LC-PUFAs) were displayed in low concentration in the hepatopancreas. Total fatty acid (TFAs) composition was significantly higher at moderate velocity of 20 cm s −1 compared to other water velocity treatments. For gonad analysis, 20 cm s −1 showed the highest TFA concentration of 93.34 mg g −1 while, the lowest concentration of 3.90 mg g −1 occurred at 0 cm s −1 . There were significant differences in male and female crab’s fatty acids contents of gonads at all flow velocities challenged ( p < 0.05). PUFAs and MUFAs were dominant while, SFAs were observed at low concentration. This study revealed that, concentration of PUFAs increased as gonad maturation increased. The decreasing concentration of hepatopancreas fatty acids over the culture period indicated that nutrient was shifted from the hepatopancreas, to be used as energy reserved to gonads for further growth of eggs and offspring. The linkages between water flow strength, hepatopancreas, and gonad fatty acids concentrations, is fundamental knowledge useful in establishing efficient habitat velocities selection which will improve aquaculture production of mud crabs with high quality broodstock.

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Section: Methodsmentioning

confidence: 99%

Fatty Acid Composition of Hepatopancreas and Gonads in Both Sexes of Orange Mud Crab, Scylla olivacea Cultured at Various Water Flow Velocities

Taufik

Shahrul

Nordin

et al. 2020

TLSR

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“…Mud crab (genus Scylla De Haan 1833; Crustacea: Decapoda: Brachyura: Portunidae) is a potential aquaculture species due to its high nutritional value and good market acceptability (Amin-Safwan, Muhd-Farouk, Nadirah, & Ikhwanuddin, 2016;Azra & Ikhwanuddin, 2016). According to Cholik (1997), the development of mud crab aquaculture and production, both in domestic and international markets, can create significant opportunities for farmers and rural area development.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, the main objective of the present study is to determine the effect of EA and MF induction on the ovarian maturation of the orange mud crab, Scylla olivacea. -Safwan et al, 2018;Amin-Safwan et al, 2016;Ikhwanuddin et al, 2014) were obtained from Setiu Wetlands, Terengganu, Malaysia (5 31'23.1"N 102 55'56.1"E) in July 2015 (sampling time: 1600 h-0800 h; duration: three times a week; using a collapsible trap; bait: chicken head; moulting stage: postmoult). S. olivacea identification was based on the morphological description by Keenan, Davie, and Mann (1998).…”

Section: Introductionmentioning

confidence: 99%

Development of ovarian maturations in orange mud crab, Scylla olivacea (Herbst, 1796) through induction of eyestalk ablation and methyl farnesoate

Muhd-Farouk

Nurul

Abol‐Munafi

et al. 2019

Arab Journal of Basic and Applied Sciences

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Many crustacean species including mud crab, genus Scylla are incapable of natural maturation under captivity, thus putting high pressure on the wild catch. Therefore, to increase the availability of mature broodstocks in captivity, this study determined the effect of Eyestalk Ablation (EA) and Methyl Farnesoate (MF) administration on ovarian maturation stages of the orange mud crab, Scylla olivacea. The study was conducted using a control group (T1) consisting of 95% alcohol (widely used as a chemical solvent), and three treatment groups consisting of: 5 ml/g oral administrated MF in the diet (T2), EA (T3) and a combination of both treatments of MF and EA (T4). The highest percentage of ovarian maturation Stage 4 was found in the T4 treatment (20.8%) compared to the other treatments which were T1 (0%), T2 (8.33%) and T3 (12.5%). Ovarian development of the treated groups (T2, T3, and T4) was significantly different compared to the control group (T1) (p < 0.05). However, there was no significant difference observed in the mean Gonadosomatic Index (GSI) in orally administrated MF (T2) compared to the EA group (T3) (p > 0.05), but it was significantly different when compared to the combination group of MF and EA (T4) (p < 0.05). It can be concluded that the combination method of oral administration of MF through diet and EA (T4) is the best technique for producing mature ovaries.

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“…The different between each ovarian maturation stages was recorded based on the color appearances, and Kruskal-Wallis analysis were done between gonadosomatic index and oocyte diameter sizes with different salinity treatments. Part of the data is associated with the recent articles [1], [2] and provided here as raw data of Supplementary materials.…”

mentioning

confidence: 99%

“…The high nutritional value and market demands for mature and gravid female mud crabs [1], [2], [3], [4], [5], [6], [7] has triggered the present study on ovarian maturation of mud crabs.…”

mentioning

confidence: 99%

Dataset on reproductive status of ovary mud crab at different salinity levels

et al. 2019

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This article investigated how crabs responded to different culture salinities through ovarian maturation stages using combination of external morphology (ovarian coloration and gonadosomatic index), and histological assessment (oocyte structures and diameter sizes). A total of sixty immature crabs were sampled from coastal water of Setiu Wetlands, Kuala Nerus, Terengganu, Peninsular Malaysia, and were introduced to limb autotomy technique in order to induce molt. Crabs were reared until successfully molted, and leaves prior to hardened shell, before proceed with salinities acclimatization prior to salinity treatments (10, 20 and 30 ppt). Five crabs were randomly selected every 15 days throughout 60-day of culture (Day 15, 30, 45 and 60) for the assessment. The different between each ovarian maturation stages was recorded based on the color appearances, and Kruskal-Wallis analysis were done between gonadosomatic index and oocyte diameter sizes with different salinity treatments. Part of the data is associated with the recent articles [1], [2] and provided here as raw data of Supplementary materials.

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Effect of Water Salinity on the External Morphology of Ovarian Maturation Stages of Orange Mud Crab, Scylla olivacea (Herbst, 1796) in Captivity

Cited by 14 publications

References 14 publications

Fatty Acid Composition of Hepatopancreas and Gonads in Both Sexes of Orange Mud Crab, Scylla olivacea Cultured at Various Water Flow Velocities

Fatty Acid Composition of Hepatopancreas and Gonads in Both Sexes of Orange Mud Crab, Scylla olivacea Cultured at Various Water Flow Velocities

Development of ovarian maturations in orange mud crab, Scylla olivacea (Herbst, 1796) through induction of eyestalk ablation and methyl farnesoate

Dataset on reproductive status of ovary mud crab at different salinity levels

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