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unknown
真鲷早期幼体的摄食和营养
Authors
杨玻琍
Publication date
26 July 1994
Publisher
Abstract
本文通国对真鲷幼鱼消化道(胃、肠)结构的观察,真鲷仔、稚、 幼鱼摄食节律及影响因素研究,环境因素对真鲷稚鱼摄食量影响的 分析,饵料中的营养物质在真鲷仔、稚、幼鱼体内的吸收利用和转运 分布研究,以及真鲷必需氨基酸的测定,得出结果如下: 1、真鲷幼鱼胃、肠的形态、结构和机能接近成鱼。胃肠分为 粘膜层、粘膜下层、肌肉层、浆膜层四层。肠长略大于体长.胃已分 化成贲门部、幽门部、幽门垂三部分,胃型为U型。超微结构显示幼 鱼胃、肠壁细胞具备数量丰富的线粒体内质网,胃粘膜层上皮细胞 结构清晰完整。 8、真鲷仔、稚、幼鱼的摄食具明显节律性,属白天偏晨昏摄食 类型。白昼摄食强度明显大于夜间,...学位:理学硕士院系专业:海洋与环境学院环境科学研究中心_海洋生物学学号:YL00011
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Last time updated on 16/06/2016