Effect of population density and tank color on the abnormal coloration of hatchery-reared mud dab, Limanda yokohamae
Effect of population density and tank color on the abnormal coloration of hatchery-reared mud dab, Limanda yokohamae
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种群密度和水池颜色对孵化场养殖泥鳅异常颜色的影响 Limanda yokohamae
DOI：
10.11233/aquaculturesci1953.33.119
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发表时间：
1985
期刊：
影响因子：
--
通讯作者：
T. Seikai
中科院分区：
文献类型：
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作者：
T. Seikai
通过饲养实验，研究了种群密度和池色对泥鳅幼鱼异常体色表现的影响。两天大的幼虫被饲养在一系列水箱（透明和黑色）中，每个水箱有六个水箱。这些幼虫用相同的食物（轮虫、褶皱臂尾轮虫、虎纹虎和碎肉）饲养。高种群密度和水箱颜色略微降低了白化幼鱼的出现频率。然后检查了水箱饲养的幼鱼的颜色变化。太阳光的连续照射使眼侧的白化部分缓慢减少并增加。盲侧的双色部分。作为与异常颜色相关的形态学异常之一，检查了眼睛迁移的异常。在几乎全白化（几乎全双色）的幼鱼中，不完全性和逆向眼移的检体比例分别为3.67%和12.44%（99.76%和30.62%），远高于其他颜色类型幼鱼。
The effect of population density and tank color on the appearance of abnormal coloration in juvenile mud dab, Limanda yokohamae, was studied by rearing experiment. Two days old larvae were stocked by series of tanks (transparent and black), each with six tanks. These larvae were reared with same fbods (rotifer, Brachionus plicatilis, Tigriopus japonicus and minced meat). High population density and tank color slightly decreased the frequency occurrence of albinic juveniles. Then changes of coloration in tank reared juveniles were examined. Continuous irradiation with sun light decreased slowly their albinic portions on ocular side and increased their. ambicolored portions on blind side. As one of morphological abnormalities associated with abnormal coloration, the abnormality of eye migration was examined. On the juveniles with almost total albinism (almost total ambicoloration), the incompete and reversed eye migration were found in 3.67% and 12.44% of specimens examined (99.76% and 30.62%) respectively, which were extremely higher rate than in the other color type juveniles.