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Lethbridge Herald Newspaper Archives

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Lethbridge Herald, The (Newspaper) - January 14, 1975, Lethbridge, Alberta Tuesday, January 14, 1975 THE LETHBRIDGE HERALD-15 Winter mosquitoes Announcing! By JOE SHEMANCHUK Entomologist Mosquito control is dif- ficult. It usually involves applying insecticide at the right time over large areas. Since several treatments are often need- ed each season, pollution can occur, especially in irrigated, recreational, and northern areas. At the Lethbridge Research Station, we are studying mosquitoes with the hope of finding more effective controls that are less likely to cause pollution. One such possibility involves destroying the mosquitoes during the winter. About 40 species of mos- quitoes are known to occur in the prairie region of Canada. These can be divided into two groups. One group passes the winter in the egg stage and the other as adults. Those that overwinter in the egg stage are the most troublesome and difficult to control. The eggs of these species are laid on damp soil. Females of these species can lay up to 200 eggs. We have found sod that con- tained as many as eggs per square foot. Most will not hatch until they have gone through several periods of drying and chilling. Even after this, not all eggs will hatch on the first flooding and may remain dormant for several years. We are trying various methods of burning, cultivation, and insecticide application at the sites where the mosquito eggs NEXT EDITION OF 'THE CHINOOK' Will appear in The Lethbridge Herald TUESDAY, JAN. 28th Advertisers are reminded that the dead- line for advertisements .is Wednesday, January 22 The Uthbridge Herald are found. We hope one of these methods or a com- bination of them will control the mosquitoes. The other group of mos- quitoes winter as adults in sheltered spots such as animal burrows, hollow trees, or root cellars. They lay their eggs on the sur- face of the water either singly or massed in small floating rafts. These eggs cannot survive freezing or drying and hatch soon after they are laid. During the summer, these species pass through several generations. Near the end of the season, the females mate and find a sheltered place to overwinter. These mosquitoes are not likely to be controlled in the winter. The only practical method of control at present is the use of insecticides at their breeding sites during the spring and summer. Rural life study topic Couples and persons from rural Alberta have until Feb. 1 to register for a weekend of study and thought on the quality of rural life. Sponsored by the Rural Education and Develop- ment Association, the weekend session will be held Feb. 21 to 23 at Collingwood Acres near Devon. Cost to the first 25 young couples or 50 persons is per couple or ?30 per per- son. The program is designed to look into life planning by interaction in groups, per- sonal searching, dis- cussions and exercising of ideas or ideals. The "Right" kind of lines to meet all your needs! 1 Engine Rebuilding Cylinder Boring and Resleeving Crankshaft Regrinding WISCONSIN ENGINE SALES SERVICE CUSTOM ENGINE PARTS LTD. 1605 3rd AVI. South 328-8181 As a Y-Tex distributor in Canada Semen available from the following herds: SliffiifMllii Parisien Beat Galant Apollo Donald Mr. Image Maine-Event Wotan Tyrol Springer Foxlease Citation Paciamar Dairyman MacSwan Prince Rockmen Parisien Distributors of Universal Ear Tags 5 colors, 2 sizes, and ink, plus applicators (numbered and CONTACT US FOR ALL YOUR REQUIREMENTS! Contact: UNIVtR P.O. Box 910 Cardston, Alberta, Canada Phone (403) 653-4437 ;