Flight Range and Dispersal Activity of the Host-seeking Horse Fly, Tabanus abactor (Diptera: Tabanidae), in North Central Oklahoma

1987 ◽  
Vol 16 (1) ◽  
pp. 211-217 ◽  
Author(s):  
Lynita M. Cooksey ◽  
Russell E. Wright
Keyword(s):  
North Central ◽  
Flight Range ◽  
Host Seeking ◽  
Dispersal Activity ◽  
Horse Fly

SEASONAL DISTRIBUTION AND PARITY OF HOST-SEEKING HORSE FLIES (DIPTERA: TABANIDAE) FROM A PASTURE NEAR SEVEN SISTERS, MANITOBA

1991 ◽  
Vol 123 (2) ◽  
pp. 361-370 ◽  
Author(s):  
Paul E.K. McElligott ◽  
Terry D. Galloway
Keyword(s):  
Seasonal Distribution ◽  
Flight Activity ◽  
Host Seeking ◽  
Flight Season ◽  
Horse Flies ◽  
Horse Fly

AbstractTwenty species of Tabanidae in three genera [Hybomitra (15 spp.), Tabanus (four spp.), Haematopota (one sp.)] were caught in Manitoba horse fly traps from mid-May to mid-July in 1987, and from mid-May to mid-August in 1988. Hybomitra lurida (Fallen) and H. nitidifrons nuda (McDunnough) peaked in abundance in late May to early June; H. illota (Osten Sacken) and H. lasiophthalma (Macquart) in early June; H. affinis (Kirby), H. arpadi (Szilady), and H. zonalis (Kirby) in mid-June; H. epistates (Osten Sacken) and H. pechumani Teskey and Thomas in late June to early July. Abundance of H. trepida (McDunnough) peaked twice, in late June and early August. Tabanid density and diversity were greatest during June; few flies were present at the site after mid-July. For most species, at the beginning of the flight season, 80–100% of flies dissected were nulliparous. After approximately 1 month of flight activity, parity in all but three species reached levels approaching 100%, and remained high thereafter. Hybomitra lurida and H. nitidifrons nuda were 100% parous within 2 weeks of their first appearance in traps. Parity of H. trepida increased to 100% after 4 weeks, declined to 40% 2 weeks later, and returned to 100% after another 2 weeks.

The Manitoba Horse Fly Trap

1964 ◽  
Vol 96 (1-2) ◽  
pp. 166-166 ◽  
Author(s):  
A. J. Thorsteinson ◽  
G. K. Bracken ◽  
W. Hanec
Keyword(s):  
Visual Perception ◽  
Meteorological Conditions ◽  
Thermal Stimulus ◽  
Orientation Behaviour ◽  
Apical Chamber ◽  
Organic Sulfides ◽  
Host Seeking ◽  
Fly Control ◽  
And Control ◽  
Horse Fly

The development of the Manitoba Horse Fly Trap was motivated initially by the need to control tabanid flies in spite of a lack of effective and safe insecticides. This objective could be realized only through a study of orientation behaviour in the field. Starting with the old observation that tabanids are attracted to darkcoloured objects (‘targets’), the influence of colour of target, colour of background, size, shape and movement of target were investigated. The most attractive target proved to be a glossy black (or red) sphere about 24 inches diameter, about three feet above the ground. In the course of its development the trap has provided interesting insights into visual perception of tabanids which will require physiological confirmation. The attractant principle is overwhelmingly visual. An initial surmise that thermal radiation contributes to the attraction significantly has been superseded, although a thermal stimulus may be involved in the behaviour of the flies after they reach the trap. Since only the hemato- phagous sex (females) is attracted to the trap, the behaviour involved appears to be teleologically related to host seeking activity. On arrival at the trap the insects fly in the space around the target and eventually move upward into the no-return chamber at the apex. When the trap is used for fly control the apical chamber is not needed if the interior of the trap is treated with a powerful, residual insecticide. In addition to its potential uses in conjunction with insecticides for control of tabanids, the Manitoba Horse Fly Trap can be used to study the correlation of flight activity with meteorological conditions as well as the seasonal and geographical distribution of tabanid species. The trap can be used effectively in the study of Stomoxys behaviour and control. If the sphere is replaced by a wick containing organic sulfides, blow flies can be attracted to it in considerable numbers.

DAILY ACTIVITY PATTERNS OF HORSE FLIES (DIPTERA: TABANIDAE: HYBOMITRA SPP.) IN NORTHERN AND SOUTHERN MANITOBA

1991 ◽  
Vol 123 (2) ◽  
pp. 371-378 ◽  
Author(s):  
Paul E.K. McElligott ◽  
Terry D. Galloway
Keyword(s):  
Daily Activity ◽  
Activity Patterns ◽  
Flight Activity ◽  
Late Afternoon ◽  
Early Evening ◽  
Host Seeking ◽  
Early Afternoon ◽  
Horse Flies ◽  
Daily Activity Patterns ◽  
Horse Fly

AbstractDaily patterns of host-seeking activity by female tabanids were determined by hourly trapping (0530–2230 hours) with Manitoba horse fly traps at Seven Sisters, Man., 4 days a week, throughout the summer of 1988. Hybomitra epistates (Osten Sacken) and H. pechumani Teskey and Thomas were most active during late morning or mid-day; H. arpadi (Szilady) and H. zonalis (Kirby) in early afternoon; H. affinis (Kirby), H. illota (O.S.), and H. lasiophthalma (Macquart) in late afternoon; H. nitidifrons nuda (McDunnough) and H. lurida (Fallen) in early evening.The morning onset of tabanid flight activity usually was related to temperature, but the cessation of activity in the evening was related either to temperature or light, depending on which was first to fall below threshold levels. Tabanid flight activity was generally low at temperatures below 20°C, although H. lasiophthalma and H. affinis occasionally were caught at 12°C. Little flight activity occurred at light intensity levels below 1000 lx regardless of temperature. At Churchill, Man., where tabanids were trapped hourly from 27 July to 15 August in 1988, H. affinis and H. frontalis (Walker) activity was low below 14°C, although some activity occurred at 6°C.

Stromatoporoids from the Famennian (Devonian) Wabamun Formation, Normandville oilfield, north–central Alberta, Canada

1988 ◽  
Vol 62 (03) ◽  
pp. 411-419 ◽  
Author(s):  
Colin W. Stearn
Keyword(s):  
Patch Reef ◽  
Abundant Species ◽  
The Other ◽  
North Central ◽  
Biotic Crisis

Stromatoporoids are the principal framebuilding organisms in the patch reef that is part of the reservoir of the Normandville field. The reef is 10 m thick and 1.5 km2in area and demonstrates that stromatoporoids retained their ability to build reefal edifices into Famennian time despite the biotic crisis at the close of Frasnian time. The fauna is dominated by labechiids but includes three non-labechiid species. The most abundant species isStylostroma sinense(Dong) butLabechia palliseriStearn is also common. Both these species are highly variable and are described in terms of multiple phases that occur in a single skeleton. The other species described areClathrostromacf.C. jukkenseYavorsky,Gerronostromasp. (a columnar species), andStromatoporasp. The fauna belongs in Famennian/Strunian assemblage 2 as defined by Stearn et al. (1988).

Sign in / Sign up

Export Citation Format

Share Document