Despite this detrimental effect, the population biology of the fungus outside Europe is virtually unknown [43] [45] and, unlike apple, its origin and introduction pathways are not documented.
The origin and introduction routes of many invasive phytopathogenic fungi are unknown, even for those causing major economic and ecological impact.
J. M. Abowd, "Synthetic establishment data: Origins and introduction to current research," Statistical Journal of the IAOS: Journal of the International Association for Official Statistics, vol. 30, iss.
We combine phylogenetic analyses of mtDNA sequences with examination of introduced populations and museum collections to clarify the identities, introduced distributions, geographical origins, and introduction histories of apple snails.
Since there was practically no previous knowledge about the history of the studied germplasm regarding origin, development and introduction in Brazil, the fact that a considerable number of traditional upland rice landraces were mixed with indica cultivars is quite intriguing.
A comparison of the alien species recorded along the Mediterranean coasts of Spain and France and an equivalent length of coast in the Levantine Sea (from Port Said, Egypt, to Marmaris, Turkey) showed marked differences in their numbers, origin, and means of introduction.
The economics of trypanotolerant cattle production in regions of origin and areas of introduction.
Anecdotal accounts suggested the horses were released from a nearby ranch in the 1920s, but the actual origin and date of introduction of these horses is unknown.
These results suggest 2 origins for rabies in dogs in the 3 provinces in southern China: an autochthonous origin and a more recent origin by introduction of a cosmopolitan dog RABV variant into China.
Although records don't exist for the Maine Coon's exact origins and date of introduction to the United States, there are multiple competing theories.
A genome scan of differentiation (Lewontin and Krakauer 1973; Beaumont and Nichols 1996) between the area of origin, site of introduction and newly colonized sites might be one approach to conjointly identify loci affected by selection and examine demographic effects during introduction and colonization using a subset of markers that do not deviate from neutral expectations.
