![]() ![]() The implementation of recovery strategies depends on the continued cooperation and actions of government agencies, individuals, communities, land users, and conservationists. ![]() Nine months after the completion of a recovery strategy a government response statement will be published which summarizes the actions that the Government of Ontario intends to take in response to the strategy. Recovery strategies are required to be prepared for extirpated species only if reintroduction is considered feasible. There is a transition period of five years (until June 30, 2013) to develop recovery strategies for those species listed as endangered or threatened in the schedules of the ESA. Recovery strategies are required to be prepared for endangered and threatened species within one or two years respectively of the species being added to the Species at Risk in Ontario list. Sections 11 to 15 of the ESA outline the required content and timelines for developing recovery strategies published in this series. It also makes recommendations on the objectives for protection and recovery, the approaches to achieve those objectives, and the area that should be considered in the development of a habitat regulation. A recovery strategy outlines the habitat needs and the threats to the survival and recovery of the species. Under the ESA a recovery strategy provides the best available scientific knowledge on what is required to achieve recovery of a species. Recovery of species at risk is the process by which the decline of an endangered, threatened, or extirpated species is arrested or reversed, and threats are removed or reduced to improve the likelihood of a species' persistence in the wild. The Province ensures the preparation of recovery strategies to meet its commitments to recover species at risk under the Endangered Species Act ( ESA) and the Accord for the Protection of Species at Risk in Canada. This series presents the collection of recovery strategies that are prepared or adopted as advice to the Province of Ontario on the recommended approach to recover species at risk. Further, combined with the application of virus-infected conidial suspensions, it may help promote the establishment of artificially released hypoviruses in chestnut stands to control chestnut blight.Recovery strategy prepared under the Endangered Species Act, 2007 About the Ontario recovery strategy series Thus, fresh chestnut dead wood may play an important role in supporting the successful spread of natural hypovirulence in chestnut forests. ![]() ![]() Virus infection reduced canker expansion and promoted canker healing (callusing). Fourteen months after treatment, 42 to 76% of the conidial spray-treated cankers and 50 to 60% of the cankers exposed to a sporulating dead stem had been virus infected by the applied hypovirulent conidia in all four study sites. Molecular markers for both the virus and the fungal carrier were used to examine the spread of the applied biocontrol virus. A total of 152 artificially initiated, virulent bark cankers in four chestnut stands were treated with virus-infected asexual spores originating either from sporulating dead wood or from a spore suspension. Here, we experimentally investigated the role of fresh dead wood in the epidemiology of chestnut blight, specifically in the spread of the hyperparasitic virus Cryphonectria hypovirus 1, which acts as biocontrol agent of C. The invasive fungus Cryphonectria parasitica, the causal agent of chestnut blight, is able to survive and sporulate on the bark of fresh dead Castanea sativa wood for at least 2 years. ![]()
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