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Understanding the dispersal and genetic structure of invasive insects across islands is …


Biology Articles » Biomathematics » Genetic variation in the invasive avian parasite, Philornis downsi (Diptera, Muscidae) on the Galápagos archipelago » Conclusion

Conclusion
- Genetic variation in the invasive avian parasite, Philornis downsi (Diptera, Muscidae) on the Galápagos archipelago

The wide habitat range and high dispersal capacity of P. downsi highlights the significant threat that this parasite poses to the Galápagos endemic avifauna. Our findings are concordant with the prediction that parasites with low host specificity [28], good dispersal ability and horizontal transmission will show low population genetic structure and differentiation [56]. Ideally, it is best to eradicate invasive species before they become adapted to the local environment in which they have colonised and prior to repeated invasions with the aid of strict quarantine practices [7]. For P. downsi, this window of opportunity appears to have passed, prompting the need for a long-term eradication program combined with sustained quarantine and monitoring practices.

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