But even though the program did not stir much controversy, the NDP government phased out the sterilization program shortly after it started. However, the Liberal government elected last year reintroduced a wolf management program this winter. In the Aishihik wilderness, the wolf population is going to be held at a maximum of 100. A wolf pack is an extended family unit of five to 10 animals, with a dominant alpha male and female. Most wolves mate for life, although some do not.
Nobody really knows, because so far no behavioural research has been done to find out.
Dr. Oakley was flown into the wilderness in November to give needles to three female wolves. Veterinarians have used the vaccine porcine zona pellucide to prevent pregnancies for more than 70 species held in zoos. But the vaccine has been effective for only one year and annual booster shots have been required. Dr. Oakley said the new vaccine is expected to be effective for longer. The process, called immunocontraception, means less handling of the animals and less time, she added.