Ultrastructural Localization Of Enzymatic Activity During Spermiogenesis In Two Phytophagous Bugs (hemiptera: Pentatomidae)

Ultrastructural cytochemical techniques were used for the localization of phosphatases and oxidases in spermatid and spermatozoon of the phytophagous bugs Acrosternum aseadum and Nezara viridula (Hemiptera: Pentatomidae). Acid phosphatase was found mainly in the trans most portion of the Golgi complex, and in the acrosome of spermatozoon. Glucose-6-phosphatase was located in the endoplasmic reticulum, trans portion of the Golgi complex and in the acrosome of spermatids. The axoneme showed activity of acid phosphatase, glucose-6-phosphatase and thiamine pyrophosphatase. This observation supports the idea that various phosphates may play some role in spermatid differentiation. 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