Diet composition, feeding dynamics and proximate composition of obtuse barracuda Sphyraena obtusata (Cuvier, 1829) in the southeastern Arabian Sea

IF 2.2 Q1 MARINE & FRESHWATER BIOLOGY

Egyptian Journal of Aquatic Research Pub Date : 2022-06-01 DOI:10.1016/j.ejar.2021.09.008

Meshram M M , Mridula Rajesh , Suyani N K , Rajesh K M

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引用次数: 1

Abstract

The feeding dynamics and nutritional value of obtuse barracuda, Sphyraena obtusata collected from the coastal waters of Karnataka, southeastern Arabian Sea, India, were investigated between August 2019 to March 2020. Three hundred and fifty five specimens of obtuse barracuda having 16.5–30.1 cm total length and 23.63–175.27 g total weight were analyzed. Of the analyzed stomachs, 119 stomachs (vacuity index = 33.52%) were empty. The high feeding intensity was observed during March with 32.43% fishes having full stomachs. Stomach fullness index values were significantly (p < 0.05) higher during November (2.46 ± 0.44) and March (2.46 ± 0.41). The most dominant prey item in terms of frequency (87.80%), number (57.63%), volume (91.82%), and % IRI (93.76%) was teleosts. Crustaceans and cephalopods were encountered less frequently and were represented by Acetes sp. and Uroteuthis duvauceli respectively. The high protein (21.39 ± 0.52%) and fat (1.21 ± 0.33%) content recorded during March resulted in high-energy value (102.11 ± 5.20). The information on dietary composition and nutritional value of obtuse barracuda provided in this study can be useful for sustainable management of the fish stock in the Karnataka coast. The high protein and energy content indicated that this fish may be considered as highly nutritive food for a healthy diet.

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阿拉伯海东南部钝梭鱼Sphyraena obtusata (Cuvier, 1829)的饮食组成、摄食动态和近似组成

研究了2019年8月至2020年3月在印度阿拉伯海东南部卡纳塔克邦沿海水域采集的钝梭鱼(Sphyraena obtusata)的摄食动态和营养价值。分析了全长16.5 ~ 30.1 cm、总重23.63 ~ 175.27 g的钝梭鱼355条标本。其中空胃119个，空度指数为33.52%。3月份摄食强度高，32.43%的鱼胃饱。胃饱腹指数显著(p <0.05)， 11月(2.46±0.44)和3月(2.46±0.41)增高。在频率(87.80%)、数量(57.63%)、体积(91.82%)和IRI %(93.76%)方面均以硬骨鱼占优势。甲壳类和头足类较少，分别以Acetes sp.和Uroteuthis duvauceli为代表。3月份记录的高蛋白质(21.39±0.52%)和高脂肪(1.21±0.33%)含量导致高能量值(102.11±5.20)。本研究提供的钝梭鱼膳食组成和营养价值信息可为卡纳塔克邦沿海钝梭鱼种群的可持续管理提供参考。高蛋白和能量含量表明，这种鱼可能被认为是健康饮食的高营养食品。

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来源期刊

Egyptian Journal of Aquatic Research MARINE & FRESHWATER BIOLOGY-

CiteScore

6.80

自引率

5.70%

发文量

审稿时长

39 days

期刊介绍： The Egyptian Journal of Aquatic Research is published by the National Institute of Oceanography & Fisheries. The Journal isdevoted to the publication of original papers and reviews in all branches of aquatic sciences (Oceanography, Limnology, Fisheries,Aquaculture and environmental sciences)