Abstract
The present datasets were conducted to investigate glucose concentration in hemolymph, energy levels at selected body parts (hepatopancreas, muscle, gonad), and feces among different sexes of crabs cultured at four different water velocities (0, 20, 40, and 60 cm/s) during a 60-day culture period. A total of 102 immature crabs (51 males, and 51 females) were sampled from Kuala Muda, Kedah coastal water, Peninsular Malaysia (5°39′N 100°19′E) from April to November of 2018. Results indicated that glucose concentration was the highest at water velocity of 60 cm/s for both male and female crabs (♂: 3.76 ± 0.08 mmol/L; ♀: 3.63 ± 0.06 mmol/L), whereas at 0 cm/s, the lowest levels of glucose concentration (♂: 0.13 ± 0.08 mmol/L; ♀: 0.19 ± 0.06 mmol/L) were recorded. As for energy analysis in hepatopancreas, results showed that both male and female crabs recorded the highest levels at 0 cm/s (no flow) with 37.919 ± 0.07 KJ/g and 34.636 ± 0.50 KJ/g, respectively. Energy for locomotion (muscle) of male crabs recorded the highest at 0 cm/s (♂: 26.823 ± 0.06 KJ/g), meanwhile for females, the highest was recorded at 20 cm/s (26.607 ± 0.34 KJ/g). Energy for reproduction of males could not be compared due to an insufficient available amount of testes/vas deferens, whereas female crabs recorded the highest energy usage at 20 cm/s water velocity (♀: 37.895 ± 0.08 KJ/g). For feces, both male and female crabs recorded the lowest energy at 60 cm/s (♂: 5.841 ± 0.03 KJ/g; ♀: 5.393 ± 0.01 KJ/g). Glucose assessment showed a direct relationship between increased velocity and glucose secretion in hemolymph at high velocity of 60 cm/s (stress condition) compared to other treatments. Regarding energy analysis, this research improved the mechanism of hepatopancreas, gonad, muscle and feces functions in development and reproduction, while it shed light on the influence of velocity on energy metabolism of S. olivacea.
Highlights
Experimental data on glucose and energy levels of orange mud crab, Scylla olivacea at different water velocities
The present datasets were conducted to investigate glucose concentration in hemolymph, energy levels at selected body parts, and feces among different sexes of crabs cultured at four different water velocities (0, 20, 40, and 60 cm/s) during a 60-day culture period
Results indicated that glucose concentration was the highest at water velocity of 60 cm/s for both male and female crabs (_: 3.76 ± 0.08 mmol/L; \: 3.63 ± 0.06 mmol/L), whereas at 0 cm/s, the lowest levels of glucose concentration (_: 0.13 ± 0.08 mmol/L; \: 0.19 ± 0.06 mmol/L) were recorded
Summary
Agriculture and Physiology; Aquaculture Physiology; Fundamental Biology; Energy allocation; Stress factor Tables Sampling activities, hatchery work, sample dissection and laboratory analysis. Every 15 days, throughout a 60-day culture period (Day 0, 15, 30, 45 and 60), three crabs were selected from each treatment for assessment Investigation of 102 immature crabs (51 pairs of male and female) by sampling of hemolymph, specific tissues (hepatopancreas, gonad, and muscle), and feces for measurement of energy. Included in this article are the raw data and descriptive data (means) on the effects of water velocities on glucose and energy levels of the orange mud crab, Scylla olivacea. The shared data are recordings from various works including; sampling activities (mud crab), hatchery phase (culturing period for water velocity treatments e Fig. 1), and laboratory work, involving glucose level determination in the hemolymph (Table 1), energy reserves in hepatopancreas (Table 2), energy for locomotion in the muscles (Table 3), energy in the gonad for reproduction (Table 4), and energy usage in the feces (Table 5) of S. olivacea cultured for 60-days
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