Exact(18)
Genetic analysis of A. marginale msp4 gene indicated a high sequence diversity of Tunisian strains, suggesting a multiple introduction of infected cattle from different origins.
Our analysis also points towards an African origin for Colombian parasite populations, and suggests that their introduction into Colombia was a recurrent process encompassing multiple introduction events.
Non-native species generally arise from multiple introduction events.
In particular, one needs to identify the most likely source populations/regions for the invasion and determine whether there were single or multiple introduction events.
Regarding the Vancouver Island outbreak, same-sex mating could be the driving force, but alternative processes might be involved, such as long distance dispersal events and multiple introduction phenomena.
As noted, O'Steen et al. [57] have previously shown that predator release drove the rapid loss of guppy escape ability in multiple introduction experiments (including the one examined here).
Similar(42)
Meanwhile, worries about fatigue setting in over Clara's multiple introductions turned out to be unfounded.
Seed fund managers are extremely elusive and often require multiple introductions to get a meeting.
Now, a study suggests that the outbreaks spring from multiple introductions of the virus--and possibly from multiple hosts.
(ii) Were all invasive populations founded by multiple introductions?
Nigeria (4.9317) has hosted multiple introductions of the strain [24].
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