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Biosystematics Of The Heermanni Subgroup A Of The Genus Dipodomys (Rodentia: Heteromyidae), Anthony G. Futcher

Loma Linda University Electronic Theses, Dissertations & Projects

This study investigates the taxonomic status of members of the heermanni subgroup of the genus Dipodomys.

Karyotypes were prepared for 12 populations of this subgroup, using in vivo cultures of bone marrow prepared by a modified colchicine-hypotonic citrate method. The 2n ranges from 52 - 72.

Electropherograms were prepared for 11 populations, and data derived from the tracings were subjected to stepwise discriminant function analysis, resulting in scattergrams which were used to indicate closeness of relationships between populations.

These data show that: a) Dipodomys stephensi (Merriam) and Dipodomys ingens (Merriam) are well defined species with 2n = 70 for D. …

Nocturnal Flights Of Triatoma (Hemiptera: Reduviidae) In Sabino Canyon, Arizona, David B. Ekkens

Loma Linda University Electronic Theses, Dissertations & Projects

Three species of Triatorna were studied in this investigation: T. rubida uhleri (Neiva), _T. protracta protracta (Uhler), and T. recurva (Stal) (Hemiptera:Reduviidae). These blood-sucking bugs are ectoparasites of vertebrate animals. Triatoma rubida uhleri (Neiva) is the most common conenose bug in southern Arizona.

At certain seasons of the year Triatoma bugs enter homes and bite people causing an allergic reaction in sensitized individuals. The purpose of this study was to determine cause of flight, time of day and r season of the year most individuals fly, effects of various physical factors on flights and distances flown.

This research was conducted …