Factors limiting the northern distribution of the blueberry maggot, Rhagoletis mendax (Diptera: Tephritidae) in Eastern Canada
| Autor: | Pierre Lemoyne, Kenna Mackenzie, Sonia O. Gaul, Charles Vincent |
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| Rok vydání: | 2016 |
| Předmět: |
biology
Maggot supercooling point tephritidae diptera biology.organism_classification overwintering Gaylussacia baccata Vaccinium myrtilloides Horticulture QL1-991 blueberry maggot host plants Insect Science Tephritidae rhagoletis mendax Botany Rhagoletis mendax Aronia melanocarpa vaccinium spp Zoology Overwintering Vaccinium |
| Zdroj: | European Journal of Entomology, Vol 113, Iss 1, Pp 143-149 (2016) |
| ISSN: | 1802-8829 1210-5759 |
| Popis: | Until recently, the Canadian distribution of the blueberry maggot, Rhagoletis mendax Curran (Diptera: Tephritidae), was restricted to Nova Scotia, Prince Edward Island and New Brunswick. The insect was first mentioned in southern Quebec in 1996 and, to date, it has not reached the Lac St-Jean region, where 34% of Canadian blueberry acreage is located. Two questions concerning the northern limit of distribution of the blueberry maggot in Quebec were addressed. First, are wild plants suitable hosts for larval development? We collected the fruit of five wild plants, (e.g. Vaccinium corymbosum, Vaccinium angustifolium, Vaccinium myrtilloides, Gaylussacia baccata, and Aronia melanocarpa) growing in southern Quebec and allowed larvae to complete their development into pupae. Blueberry maggot pupae were recovered from Vaccinium corymbosum, Vaccinium angustifolium, and Gaylussacia baccata, indicating that these plants are suitable for larval development. Second, are harsh winter temperatures a factor limiting the northern distribution of the blueberry maggot? Pupae collected in Quebec and Nova Scotia were put in the soil in the fall and were brought back to the laboratory to determine their supercooling points at different times during winter. The supercooling points of pupae collected in Quebec and Nova Scotia averaged -22.6°C. In natural conditions, air temperatures |
| Databáze: | OpenAIRE |
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