应用透射电镜和超薄切片技术，对长毛对虾和斑节对虾的杆状病毒病进行研究。

With transmission electron microscope and technique of ultrathin section, we studied the baculovirus diseases on Penaeus Penicillatus Alcock and Penaeus Monodon Fabricus.

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长毛对虾幼体时饵料的利用率随饵料密度的增大而降低，并在进一步增大饵料密度时稳定于一个较低水平。

For Penaeus larva, the utilizable proportion of the food decreases with the raising of the diet density, and remains at a lower level in further raising of the density.

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长毛对虾幼体时饵料的利用率随饵料密度的增大而降低，并在进一步增大饵料密度时稳定于一个较低水平。

For Penaeus larva, the utilizable proportion of the food decreases with the raising of the diet density, and remains at a lower level in further raising of the density.

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