Juvenile hybrid grouper (Epinephelus coioides × E. lanceolatus) are euryhaline and can grow in a wide range of salinities
Juvenile hybrid grouper (Epinephelus coioides × E. lanceolatus) are euryhaline and can grow in a wide range of salinities
复制标题
幼年杂交石斑鱼（Epinephelus coioides × E. lanceolatus）是广盐性的，可以在很宽的盐度范围内生长
DOI：
10.1007/s10499-014-9845-8
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发表时间：
2015
影响因子：
2.9
通讯作者：
Rinpawee Ketmanee
中科院分区：
文献类型：
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作者：
P. Sutthinon;K. Thongprajukaew;Suktianchai Saekhow;Rinpawee Ketmanee
本研究旨在寻找杂交石斑鱼幼鱼（Epinephelus coioides×E. lanceolatus）生长的最佳盐度。杂交石斑鱼（初始重量 23.5 ± 1.1 克，初始长度 11.37 ± 0.18 厘米）在四种盐度（10、15、20 和 30 ppt）（一式三份，每次重复 15 条鱼）下饲养 3 个月。检查采食量、生长情况、饲料转化率、内脏器官指数、化学成分和消化酶活性作为评价标准。四种处理的生长、饲料转化率和内脏器官指数相似，肌肉和屠体的近端成分（水分、蛋白质、脂质和灰分）仅存在微小差异。胰蛋白酶、淀粉酶的比活性以及淀粉酶与胰蛋白酶活性的比率表明蛋白质和碳水化合物的消化可能与盐度相关。研究结果表明，杂交石斑鱼是广盐性的，能够在较宽的盐度范围 (10–30 ppt) 中生长。这可能有利于在咸水和海水中养殖鱼类。
This study was carried out to find the optimal salinity for growth of juvenile hybrid grouper (Epinephelus coioides×E. lanceolatus). Hybrid groupers (23.5 ± 1.1 g initial weight and 11.37 ± 0.18 cm initial length) were reared at four salinities (10, 15, 20 and 30 ppt) (in triplicates with 15 fish per replication) for 3 months. Feed intake, growth, feed conversion, visceral organ indices, chemical composition and digestive enzyme activities were examined and used as assessment criteria. Growth, feed conversion and visceral organ indices were similar across the four treatments, and there were only minor differences in the proximal compositions (moisture, protein, lipid and ash) of muscle and carcass. The specific activities of trypsin, amylase and the ratio of amylase to trypsin activities suggested a possible adaptation of digestion of protein and carbohydrate in relation to salinity. The findings indicate that the hybrid grouper is euryhaline and is capable of growth over a wide salinity range (10–30 ppt). This may facilitate culture of the fish in both brackish water and seawater.