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Updated: Sep 4, 2025
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Delivery of Nucleic Acids through Embryo Microinjection in the Worldwide Agricultural Pest Insect, Ceratitis capitata
Published on: October 1, 2016
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Unveiling biogeographical patterns in the worldwide distributed Ceratitis capitata (medfly) using population genomics
María Belén Arias1,2, Katherine Hartle-Mougiou1,3, Sergi Taboada1,4,5
1Department of Life Sciences, Natural History Museum, London, UK.
Molecular Ecology
|July 15, 2022
Summary
Global medfly (Ceratitis capitata) invasions reveal distinct genetic clusters and unique microbiome adaptations in Brazil. This research clarifies the evolutionary history of invasive fruit flies and their adaptation to new environments.
Area of Science:
- Entomology
- Genomics
- Microbiology
Background:
- Invasive species, particularly the Mediterranean medfly (Ceratitis capitata), pose significant threats to global food security and agriculture.
- The medfly's wide host range and invasiveness contribute to its status as a damaging agricultural pest.
- Understanding the genetic structure and evolutionary history of invasive populations is crucial for effective management.
Purpose of the Study:
- To investigate the population genomic structure and phylogeographical history of the Mediterranean medfly across its native and introduced ranges.
- To analyze the microbial composition of medfly populations and identify variations linked to geographical origin and host plants.
- To explore potential migration routes and adaptive mechanisms of medfly invasions.
Main Methods:
- Restriction site-associated DNA sequencing (RADseq) was employed to analyze genetic variation.
- Single nucleotide polymorphisms (SNPs) were identified and used for population structure analysis.
- Amplicon sequencing of the 16S ribosomal RNA (V4 region) was performed to assess microbial communities.
Main Results:
- RADseq identified two main genetic clusters, separating native and introduced medfly populations.
- Brazilian medfly populations exhibited introgression from an additional genetic cluster not previously identified by microsatellite markers.
- Microbiome analysis revealed highly similar compositions across most regions, with Brazilian specimens showing unique diversity and composition.
Conclusions:
- The genetic and microbiome data suggest a potential direct migration route of medflies from Africa to Brazil.
- Brazilian medfly populations may have undergone specific adaptations to local environmental conditions, reflected in their unique genetic and microbial profiles.
- These findings enhance our understanding of the evolutionary dynamics and adaptive strategies of invasive species.
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