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    THE COMPARATIVE HISTOLOGY OF THE DIGESTIVE TRACT OF ACRIDA ANATOLICA AND PARAPHOLIDOPTERA SPINULOSA (ORTHOPTERA)
    (Mümin POLAT, 2019) Eren, Banu; Basar, Fatih; Sagir, Dilek; Yilmaz, Burcu Demirel; Mercan, Sevcan; Eren, Zafer
    Acrida anatolica and Parapholidopteraspinulosa are two different species of migratory caterpiller in the samefamily and both are threats to agriculture. They areharmful, they migrate andspread wide areas. Herbivorous Acridaanatolicahas strong chewy mouth part, mandibula is considered to be thebasic insect mouth type. Parapholidopteraspinulosa a carnivorous species, has a strong chewing gut. The purpose ofthis study is to compare the structures of the digestive tracts of these species.The digestive tract is divided into three parts, the foregut, midgut, and thehindgut. The prismatic epithelium, external circular and longitudinal muscles,connective tissue, granular structures and peritrophic membrane are the partsof the foregut. The caeceum is also found in this portion.The grasshoppers werecollected from the Ondokuz Mayis University Campus and kept in special containersand fed with wheat grass, fresh grass and with different insects. During thedissection process, the digestive tracts were removed and tissues were fixedwith 10% buffered neutral formalin solution for 24 hours. After routinehistological procedures, the sections were stained withhematoxylin-eosin (H-E).Foregut, midgut and hindgut were comparatively examined in terms of peritrophicmembrane, epithelial tissue, cell size, nucleus size, circular and longitudinalmuscles, connective tissue, regenerative cells and cellular diversity.            The knowledge of grasshopper histology and embryologywill contribute to the development of more efficient fighting with grasshoppersand the development of agricultural plant protection products.