Host selection and partitioning of non-biting midges (Diptera: Chironomidae) by aquatic mites (Hydrachnidiae)

The larvae of Aquatic mites (Hydrachnidae) are parasitic. Many Hydrachnids have adapted a parasitic relationship with aquatic Diptera, particularly Chironomidae. Little work has been done in North America, particularly the Ozarks, on the relationships that exist between Hydrachnidae and Nematocera.  The goal of this project is to determine which species of lotic inhabiting Hydrachnids are parasitizing Chironomids. Other data collected is larval Hydrachnid attachment site, which is determining host specificity and partitioning. SLAM Traps and sweep netting are used to collect adult Chironomids.  Adult mites are collected by disturbing the benthic layer, which flows down stream through a fine mesh net.  Site location of larvae are recorded and removed from host then for the purpose of identification. The genera Feltria and Axonopsis have so far demonstrated host specificity and Atractides, Sperchonopsis, Limnesia, Hygrobates have been found on several genera of Chironomids.