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KMID : 0381920060360040259
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Korean Journal of Microscopy
2006 Volume.36 No. 4 p.259 ~ p.269
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The Fine Structure of Spider (Araneus ventricosus) Hemocytes
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Choi Jae-Young
Moon Myung-Jin
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Abstract
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Hemocytes of the spider Araneus ventricosus were investigated with histochemistry, density analysis of percoll gradient, and fine structural examinations using transmission electron microscope. The hemocytes of this spider were classified into two major groups: granulocytes and non-granulocytes. The granular hemocytes were subdivided into three subtypes according to their histochemical properties which are eosinophilic granulocytes (EGs), basophilic granulocytes (BGs) and cyanocytes. The EGs, which have small granules within the cytoplasm comprise about 5% of the total hemocytes. However the granules of BGs are larger than those of EGs. The cyanocytes were characterized to contain hemocyanin granules in their cytoplasm. On the other hand, the non-granulocytes were divided into three subtypes: hyaline leucocytes, oenocytoids, and molting hemocytes. The hyaline leucocytes are the most abundant and the smallest hemocyte type in this spider. The oenocytoids that have 10~15 μm in diameter are mostly found at the marginal region of the myocardium in the heart tube. The molting hemocytes, which only appeared during the molting period, contains plenty of glycogen particles in their cytoplasm.
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KEYWORD
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Fine structure, Hemocytes, Spider, Araneus ventricosus
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