Keskin Adem, Bursali Ahmet, Tekin Saban
Department of Biology, Gaziosmanpasa University, Faculty of Science and Art, 60250 Tokat, Turkey.
J Parasitol. 2012 Dec;98(6):1271-2. doi: 10.1645/GE-3125.1. Epub 2012 May 2.
Gynandromorphism is a rare, abnormal phenomenon in which both female and male characteristics are simultaneously displayed in an organism. It has been described in many arthropods, including ticks. This unique occurrence is known within several species of Amblyomma, Dermacentor, Haemaphysalis, Hyalomma, Ixodes, and Rhipicephalus. Bipartite protogynander is the most common form of gynandromorphism, whereas gynander intriqué is the rarest type among the ticks. Here, we report the first case of a gynandromorph of Hyalomma marginatum Koch, 1844 collected from a naturally infested human during a tick survey in the Tokat Province of Turkey in 2006. It is an interesting gynander intriqué, with features of a protogynander. The tick described here displays abnormal characters such as an alloscutum with a male consucutum in dorsal view, male and female spiracular plates, female genital aperture under the male genital flap, and adanal plates located on the both side of the anus, whereas accessory plates are on the left side only in ventral view.
雌雄嵌合体是一种罕见的异常现象，即生物体同时表现出雌性和雄性特征。它在包括蜱虫在内的许多节肢动物中都有描述。在钝缘蜱属、革蜱属、血蜱属、璃眼蜱属、硬蜱属和扇头蜱属的几个物种中都存在这种独特现象。二分先雌后雄型是雌雄嵌合体最常见的形式，而复杂雌雄嵌合体是蜱虫中最罕见的类型。在此，我们报告了首例于2006年在土耳其托卡特省的一次蜱虫调查中从一名自然感染的人类身上采集到的边缘璃眼蜱（1844年，科赫）雌雄嵌合体。这是一个有趣且具有先雌后雄特征的复杂雌雄嵌合体。此处描述的蜱虫呈现出异常特征，如背面观全盾板带有雄性的盾板，具有雄性和雌性的气门板，雌性生殖孔位于雄性生殖瓣下方，肛门板位于肛门两侧，而副板仅在腹面观时位于左侧。
