Effects of handling stress and moulting cycle on reproductive performance and digestive capacity of female giant freshwater prawn, Macrobrachium rosenbergii

IF 1.4 Q3 MARINE & FRESHWATER BIOLOGY International Aquatic Research Pub Date : 2021-09-01 DOI:10.22034/IAR.2021.1926075.1146
N. Kamaruding, Mhd Ikhwanuddin Abdullah
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Abstract

Energy metabolism is a critical component in assessing the fundamental aspect of organism fitness in prawn aquaculture farming. This is particularly important to maintain sustainable energy use to cope with stress and tolerance without affecting growth and reproduction functions. This study aims to determine and compare energy utilisation with a special focus on reproductive performance and digestive capacity concerning the handling-stress and moulting cycle of female Giant Freshwater Prawn, Macrobrachium rosenbergii. There were two experimental groups, which are (i) grow-out pond-reared (G1): prawns were sampled randomly and concurrently for one day at an outdoor condition, and (ii) short-term maintenance (G2): prawns were transported to an indoor hatchery, acclimated for two weeks, and sampled by staggered-method for two consecutive months. For the respective experimental conditions, haemolymph from five females was sampled at eight different moulting stages, whereby each stage was classified as reproductive and non-reproductive moulting cycles. Cultivated females at the grow-out pond had higher levels of haemolymph glucose (p < 0.05) at Sub-stages D1 (0.51 ± 0.12 mg/mL), D3 (0.50 ± 0.05 mg/mL), and A (0.71 ± 0.09 mg/mL) during the reproductive moulting cycle compared to the short-term maintenance at similar moulting stages. Other findings showed that cultivated prawns at the grow-out pond had significantly (p < 0.05) higher glucose levels at Sub-stages D3 (0.57 ± 0.09 mg/mL) and B (0.37 ± 0.03 mg/mL) during the non-reproductive moulting cycle compared to the short-term maintenance indicating that energy was utilised to cope with the handling stress. We suggest that short-term maintenance may reduce the stressors factor and is applicable for hatchery operations to maintain the health of the prawn.
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处理应激和换毛周期对罗氏沼虾雌虾繁殖性能和消化能力的影响
在对虾养殖中,能量代谢是评估生物适应性基本方面的一个重要组成部分。这对于维持可持续的能源利用以应对压力和耐受性而不影响生长和繁殖功能尤其重要。本研究旨在确定和比较罗氏沼虾(Macrobrachium rosenbergii)雌性淡水巨虾(Giant Freshwater对虾,Macrobrachium rosenbergii)的能量利用,特别关注生殖性能和消化能力与处理应激和换壳周期的关系。试验组分为两个组,分别是(1)生长池饲养(G1):在室外条件下随机同时取样1天;(2)短期维持(G2):将对虾移入室内孵化场,驯化2周,采用交错法连续取样2个月。在不同的实验条件下,在8个不同的换羽阶段采集了5只雌性的血淋巴,每个阶段被分为生殖和非生殖换羽周期。生长池培养的雌性在繁殖周期内D1亚阶段(0.51±0.12 mg/mL)、D3亚阶段(0.50±0.05 mg/mL)和A亚阶段(0.71±0.09 mg/mL)的血淋巴葡萄糖水平高于短期维持的雌性(p < 0.05)。结果表明,与短期维持期相比,生长池养殖对虾在非繁殖换毛周期的D3亚阶段(0.57±0.09 mg/mL)和B亚阶段(0.37±0.03 mg/mL)的葡萄糖水平显著(p < 0.05)升高,表明能量被用于应对处理应激。我们认为短期维持可以减少应激因素,适用于孵化场作业,以维持对虾的健康。
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来源期刊
International Aquatic Research
International Aquatic Research MARINE & FRESHWATER BIOLOGY-
CiteScore
2.40
自引率
7.70%
发文量
0
审稿时长
12 weeks
期刊介绍: The journal (IAR) is an international journal that publishes original research articles, short communications, and review articles in a broad range of areas relevant to all aspects of aquatic sciences (freshwater and marine). The Journal specifically strives to increase the knowledge of most aspects of applied researches in both cultivated and wild aquatic animals in the world. The journal is fully sponsored, which means it is free of charge for authors. The journal operates a single-blind peer review process. The main research areas in aquatic sciences include: -Aquaculture- Ecology- Food science and technology- Molecular biology- Nutrition- Physiology- Water quality- Climate Change
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