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Lethbridge Herald Newspaper Archives

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Lethbridge Herald, The (Newspaper) - June 11, 1974, Lethbridge, Alberta 6 LETHBRIDGE HERALD June 11, 1974 Hormone tests join war against insects By J. A. SHEMANCHUK Entomologist Hormones are chemicals that are secreted into the blood stream by certain organs to stimulate other parts of the body into action. They are essential to normal growth and development of an animal. At the Lethbridge Research Station, we are trying a new approach to controlling insects. We are using their hormones as insecticides If the amount of any one hormone is altered, the development of the insect is affected. This can be fatal to the insect. Different hormones act in different ways when used as insecticides. For example, one hormone, when applied to water containing mosquito larvae, interferes with their development when the adult tries to shed the pupal skin. The adult is unable to escape and dies. Another hormone interferes with the larval molting process in mosquitoes and the larva is unable to cast the old skin and dies in the larval stage. Acupuncture for Aussie horses SYDNEY, Australia (Reuter) Horses now can get acupuncture treatment for their ailments in Australia. Dr. John Jang, who studied acupuncture in China, has added a polo pony, suffering from inflammation above the left hind hoof, to his list of patients and has been asked to treat other horses. Jang sent to China for an anatomical model of a horse and a textbook explaining what horse ailments can be cured by acupuncture. He says there are about 440 points where a needle can be inserted in a horse, compared with almost for a human being. We have found in the laboratory that only one part of either of these hormones in 100 million parts of the water in which the larvae are growing is enough to kill the mosquitoes. ACTIVE The advantages of hormones are that they are highly active against the pest, are almost nontoxic to mammals and fish and are rapidly broken down into nontoxic substances by heat and micro-organisms. Also, since hormones are essential parts of the insect's body chemistry, it is unlikely that insects could develop a resisteance to them. A disadvantage might be that some closely related non-pest species might be affected. Control of insects by hormones is still at the experimental stage and it will probably take several more years before this new technique can be applied on a commercial scale. During the decade of the 1960's, the U.S. lost an average of farms every year. Only slightly higher farm prices in 1972 helped slow this dangerous trend. "MAKE HAY" MAKE QUALITY HAY WITH FORD'S 535 MOWER CONDITIONER QUALITY HAY WITH THE FASTEST BALER IN THE WEST FOR VERSATILITY IN SILAGE Its Ford's 612 FORAGE HARVESTER Cotne in at p