Histological and Histochemical Studies on the Male Accessory Genital Glands and the Derivations of the Spermatophore Components from the Accessory Glands in Haemaphysalis longicornis(Acari: Ixodidae).
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Matsuo, T., T. Mori and S. Shiraishi, 1997. Histological and histochemical studies on the male accessory genital glands and the derivations of the spermatophore components from the accessory glands in Haemaphysalis longicornis(Acari: Ixodidae). J. Acarol. Soc. Jpn., 6(1): 1-10.<BR>The external shape and histological changes of the male accessory genital glands during feeding and after copulation were observed in Haemaphysalis longicornis. Histochemical properties between secretory granules of the accessory glands and components of the spermatophore were also compared. The accessory glands consisted of two single and five paired lobes opening into the collecting duct(CD)lying on the floor of the body cavity.The single dorso-median lobe(DML)opened to the posterior end of the CD and extended in an antero-dorsal direction. The single medio-ventral lobe(MVL)opened to the antero-ventral region of the CD. Five paired lobes were on both sides of the CD;the antero-ventral lobe(AVL), the latero-ventral lobe(LVL), the dorsolateral lobe(DLL), the postero-lateral lobe(PLL)and the postero-ventral lobe(PVL)from anterior to posterior. Epithelia of the lobes showed remarkable histological changes synchronized with feeding and copulation: Secretory granules contained in the epithelia increased in number during feeding and were almost completely released after copulation. These histological changes suggest that the secretions of the accessory glands form the spermatophore. The histochemical comparisons showed that the outer and inner layers of the ectospermatophore were, respectively, derived from the AVL and the DLL(PLL), and three types of granules in the spermatophore were transferred from the WVL and the LVL.
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