DUPLICATION OF THE ANTERIOR-PIT COMPARTMENT IN ADULT REGENERATES OF HALLER'S ORGAN OF THE TICK HYALOMMA ANATOLICUM (ACARI: IXODIDAE) UNDER INFLUENCE OF RETINOIC ACID

About author:

Acknowledgments:

The study was supported by the Russian Foun-dati on of В asic Research (proj ect No. 01 -04-49778) and by the Institute of Entomology and the Institute of Parasitology of the Czech Academy of Science. The author thanks Prof. F. Dusbabek (Institute of Parasitology CAS) and Dr. V. Nemec (Institute of Entomology CAS) for their help in presenting accommodations and chemicals for research, as well as Dr. A.R. Nesterov, Head of the Laboratory of Electron Microscopy, Faculty of Geology, St. Petersburg State University, for his highly quali-fied help in SEM study of ticks.

Annotation:

Treatment of engorged Hyalomma anatolicum nymphs (after amputation of their left foreleg) with olive oil solution of retinoic acid (IO⁴ M) has result-ed in a specific teratogenic effect (duplication of the anterior-pit compartment in adult regenerates of Haller's organ) that corresponds to similar effect produced by this retinoid (duplication of axial struc-tures in limb regenerates) in vertebrate animals.

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