کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10223708 1701045 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Histological study and ultrastructure of salivary glands of Helicid snail Eobania vermiculata and Planorbid snail Biomphalaria alexandrina (Gastropoda: Pulmonata)
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
پیش نمایش صفحه اول مقاله
Histological study and ultrastructure of salivary glands of Helicid snail Eobania vermiculata and Planorbid snail Biomphalaria alexandrina (Gastropoda: Pulmonata)
چکیده انگلیسی
The salivary glands of Pulmonata, Helicidae Eobania vermiculata and Planorbidae Biomphalaria alexandrina were investigated by a series of histological techniques, including transmission electron microscopy, to expand the knowledge of them. In the salivary glands of E. vermiculata, four different cell types were detected in the glandular epithelium, both ultrastructurally and histochemically, namely: mucocyte I, mucocyte II, vacuolated cells, and granular cells. They produce sialomucins in addition to neutral mucopolysaccharides. Ultrastructurally, the rough endoplasmic reticulum and secretory vacuoles of the four cell types are shown. Whereas, in the salivary glands of Biomphalaria. alexandrina, two types of secretory cells were viewed, namely: granular mucocytes and vacuolated cells. The former seems to produce acid mucopolysaccharide, while the latter is presumed to secrete mucin. Vacuoles in the gland cells produce secretory products, and it was suggested that the cilia transports them to the collecting ducts of the salivary gland.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Egyptian Journal of Aquatic Research - Volume 44, Issue 3, September 2018, Pages 219-226
نویسندگان
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