Lordotic deformation and abnormal development of swim bladders in some hatchery-bred marine physoclistous fish in Japan
Lordotic deformation and abnormal development of swim bladders in some hatchery-bred marine physoclistous fish in Japan
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DOI：
10.1111/j.1749-7345.1994.tb00806.x
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发表时间：
1994-01-01
影响因子：
2.8
通讯作者：
Fujita, Shiro
中科院分区：
文献类型：
--
作者：
Kitajima, Chikara;Watanabe, Takeshi;Fujita, Shiro
在日本的许多孵化场，据报道，在红鲷、日本鲈鱼和琥珀鱼的海洋附鞭幼体中，脊柱前凸的发病率很高。自1975年以来，为解决这一问题进行了广泛的研究，得出了以下结论，并提出了有效的对策。在早期的幼虫发育阶段，鱼必须能够在水面上吞咽空气，以使鱼鳔正常发育。由于浮力不足，无法吞咽空气的幼鱼以倾斜的姿势向上游，导致脊椎弯曲成V形。提出的管理解决方案是：1）减少由剧烈曝气引起的强水流; 2）提供营养丰富的轮虫，以产生健康的游泳幼虫; 3）防止水面上形成任何油膜。
At many hatcheries in Japan, a high incidence of lordosis is being reported among marine physoclistous juveniles of red sea bream, Japanese sea bass, and amberjack. Extensive studies being conducted since 1975 to tackle this problem have led to the following conclusions, and effective countermeasures are being proposed. During early larval development in the temporary physostomous stage, fish must be able to gulp air at the water surface for normal development of the swim bladder. The juveniles that fail to gulp air swim upward in an oblique position because of insufficient buoyancy, causing the backbone to curve in a V-shape. The managerial solutions proposed are: 1) reduce the strong water current caused by vigorous aeration; 2) provide nutrient-enriched rotifers to produce healthy swimming larvae; and 3) prevent any oily film formation on the water surface.