罗氏沼虾幼体个眼外形及生长动态

The external form and the development of ommatidium of Macrobrachium rosenbergii during the larval stages

罗氏沼虾Ｍａｃｒｏｂｒａｃｈｉｕｍｒｏｓｅｎｂｅｒｇｉ各期氵蚤状幼体复眼的个眼面均呈正六边形，个眼透镜面为圆形，其表面光滑。个眼的数量在幼体期不恒定。经计算机方程选优，复眼个眼面直径、矢状面个眼数量和色素细胞层宽度与幼体体长之间呈幂函数关系，而复眼矢状面个眼数量与色素细胞层宽度之间呈直线相关。

Facets of ommatidia of larval M rosenbergii were all the structure of regular hexagon, and their lenses were circular and smooth The size and quantity of the ommatidium were changeable along with larval exuiation and its development The relationship between the size of the facet and the length of larvel body was a power function The relationships between the quantity of the ommatidium in sagittal tangent plane and the length of the body, and between the width of pigment cell in the tangent plane and the quantity of the ommatidium in this plane were the power function, too However, the relationship between the quantity of the ommatidium in sagittal tangent plane and the width of the pigement cell in the plane was a liner function