SURVIVAL AND GROWTH OF STRIPED BASS, MORONE SAXATILIS, AND MORONE HYBRID LARVAE: LABORATORY AND POND ENCWSURE EXPERIMENTS!
SURVIVAL AND GROWTH OF STRIPED BASS, MORONE SAXATILIS, AND MORONE HYBRID LARVAE: LABORATORY AND POND ENCWSURE EXPERIMENTS!
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条纹鲈、MORONE SAXATILIS 和 MORONE 杂交幼虫的生存和生长：实验室和池塘封闭实验！
DOI：
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发表时间：
1986
期刊：
影响因子：
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通讯作者：
E. Houde
中科院分区：
文献类型：
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作者：
E. Houde
摘要本研究比较了斑纹鲈鱼（Morone sa:l:atilis）及其杂交种在孵化后30 d内的存活和生长情况，以确定杂交斑纹鲈鱼在幼虫期的杂种优势是否明显。条纹鲈鱼（SB）幼虫；条纹鲈鱼x白鲈鱼（WBX）， M. sa: 1:atilis Q x M. chrysops 0'；鲈鱼x白鲈（WPX）， M. sa:l:atilis Q × M. america’/IQ。0'，分别在实验室（19°C, 3°C）和淡水池塘围场环境条件下饲养。在实验室中，SB在30日龄的平均存活率显著高于任何一种杂交。在池塘围护中，不同类型的幼虫在30天的平均存活率和大小上都没有显著差异。不同类型幼虫的平均生长率，实验室为0.28 ~ 0.36 mm d- I，围场为0.30 ~ 0.32 mm d- I，差异不显著。15.0 ~ 19.0% d- I的体重平均增长率在实验室中无显著差异，但在池塘围场中差异显著，其中WBX （17.9% d- I）和WPX （17.3% dI）的增长率显著高于SB （15.5% dI）。如果30天大的鱼苗在孵化场饲养，杂交鱼苗没有明显的生产优势。在1月龄的池塘围场中，WBX和WPX明显表现出杂交活力的初步表达，通过更快的体重增长速度来识别，但在实验室池中则没有。
ABSTRACf Survival and growth of striped bass, Morone sa:l:atilis, and its hybrids were compared in the first 30 days after hatching to determine if the reported heterosis of hybrid striped bass is evident in the larval stage. Larvae of striped bass (SB); striped bass x white bass (WBX), M. sa:l:atilis Q x M. chrysops 0'; and striped bass x white perch (WPX), M. sa:l:atilis Q x M. america'/IQ. 0', were reared under controlled conditions in the laboratory (19°C, 3°too) and under ambient conditions in freshwater pond enclosures. In the laboratory SB had a significantly higher mean survival rate at 30 days of age than either hybrid. In the pond enclosures neither mean survival nor size at 30 days differed significantly among the types of larvae. Mean rates of growth in length, which ranged from 0.28 to 0.36 mm d- I in the laboratory and from 0.30 to 0.32 mm d -I in the enclosures did not differ significantly among the types of larvae. Mean rates of growth in weight of 15.0 to 19.0% d -I were not significantly different in the laboratory, but the rates did differ significantly in the pond enclosures, where the WBX (17.9% d- I ) and WPX (17.3% dI ) rates were significantly higher than the SB (15.5% dI ). If 30-day-old fry were to be reared in hatcheries, there is no clear production advantage for hybrids. A possible initial expression of hybrid vigor, recognized by faster rates of growth in weight, was evident in WBX and WPX at 1 month of age in the pond enclosures but not in the laboratory tanks.