Abstract
In the anterior part of the midgut adult Trachyderma philistina, the apical part showed microvilli in the form of membrane with folds and also microvilli appeared slender and uniform. Between these folds of microvilli appeared a lot of ribosomes and rough endoplasmic reticulum. Secretory vesicles are discharged from part of midgut. A well-developed oval nucleus appeared in the cytoplasm near the apical part of the cell. The nucleus is surrounded by a lot of free ribosomes and rough endoplasmic reticulum. Mitochondria appeared near the apical part of the cell. A well-developed thick basement membrane appeared in the basal part of the anterior midgut of adult beetle Trachyderma philistina. In the middle part of the midgut, a very thick well-developed brush border microvilli appeared. Mitochondria and numerous tracheae appeared through cytoplasm. Rough endoplasmic reticulum appeared throughout the cytoplasm. A lot of secretory vacuoles were observed directed apically. A well-developed oval and circular nucleus appeared near the basal part of the cell and surrounded by numerous rough endoplasmic reticulum A well-developed muscle fiber appeared apically and basally. A very thin basement membrane appeared in the basal part of the cell. The peritrophic membrane is absent in the midgut of adult stage Trachyderma philistine while regenerative cells appeared in the basal part of the middle midgut cell. In the posterior part of the midgut, microvilli appeared in the form of membranes due to the presence of numerous organelles that are discharging into the lumen. Lipid spheres and aggregations of glycogen are present throughout the cell. A thin basement membrane was observed.
Highlights
Insects were shown to have great differences in their organ and process of digestion because of the variations in food consumption
In the anterior part of the midgut of adult Trachyderma philistina, the apical part showed microvilli in the form of membrane with folds and in other parts microvilli appeared slender and uniform. Between these folds of microvilli appeared a lot of ribosomes and rough endoplasmic reticulum
The nucleus is surrounded by a lot of free ribosomes and rough endoplasmic reticulum
Summary
Insects were shown to have great differences in their organ and process of digestion because of the variations in food consumption. The intestinal length is usually linked to diet. The insects that use high protein in their diets are generally short intestines (Pradhan, 1939). Singh take an interest in morphology and histology of the food channel in various groups of coleopterans (1973). The most extensive and longest food channel diversion is midgut canal. The most extensive and longest food channel diversion is midgut. It is well known that most digestive enzymes are secreted in insects and are mainly digestive (Gilmour, 1961; Dadd, 1970; Wigglesworth, 1972 Coleoptera midgut is long and spiny in adults such as Trypodendron lineatum (Schneider & Rudinsky 1969)
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