SOME ASPECTS OF TROPHIC SPECIALIZATION IN BOTH FREE-LIVING AND PARASITIC PROSTIGMATID MITES (ACARI: ACTINOTRICHIDA) FROM THE MORPHO-FUNCTIONAL VIEWPOINT

About authors:

I.A. Akimov, Schmalhausen Institute of Zoology, National Academy of Sciences of Ukraine, Kiev, 01601 Ukraine
I.V. Badanin, I.I. Schmalhausen Institute of Zoology, В. Khmelnitskogo, 15, Kiev, 01601 Ukraine
I. Wita, W. Stefanski Institute of Parasitology, Twarda 51/55, Warsaw, Poland

Annotation:

Some functional characteristics of the suctori-al type of gnathosoma in various prostigmatid mites are analyzed. The activity of the labrum including its possible role in the hermetization of the preoral cavity is considered. The oligomeriza-tion processes of the muscular complexes of the gnathosoma as well as the functional substitution of its structures are discussed. As a whole, the trophic specialization of mite species studied is character-ized by the various morphological adaptations of their mouthparts. These structural transformations of the gnathosoma are more flexible if compared with its muscular system being rather more con-servative.

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