Data for: A small survey of introduced African fig fly (Zaprionus indianus) (Diptera: Drosophilidae) in orchards of the eastern United States
The African fig fly, Zaprionus indianus (Gupta), is a generalist fruit fly that typically breeds in decaying fruits from over 70 plant species. The species has spread globally from its native range in tropical Africa, becoming an invasive pest on ripening figs in Brazil. First reported in the United...
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Zusammenfassung: | The African fig fly, Zaprionus indianus (Gupta), is a generalist fruit fly
that typically breeds in decaying fruits from over 70 plant species. The
species has spread globally from its native range in tropical Africa,
becoming an invasive pest on ripening figs in Brazil. First reported in
the United States in 2005 in Florida, Z. indianus has since been
documented as far north as Canada and is hypothesized to recolonize
northwards from southern refugia each year. We sampled drosophilid
communities over the growing season at two orchards in Virginia from
2020-2022 and 11 orchards along the East Coast during the fall of 2022 to
quantify abundance of Z. indianus relative to other drosophilids across
locations, seasons, and fruit crops. Massachusetts was the northernmost
population, with no Z. indianus detected in Maine and no correlation
between latitude and relative abundance. Variation in Z. indianus relative
abundance was high between nearby orchards and abundance was higher on
peaches relative to apples within orchards. Comparisons of seasonal
abundance curves between two Virginia orchards showed similar dynamics
across years with individuals first detected around July and becoming
absent around December, with peaks in late summer and mid fall. The
variation in seasonal and latitudinal abundance shown here highlight a
need for broader sampling to accurately characterize the range, spread,
and environmental tolerances of Z. indianus in North America. |
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DOI: | 10.5061/dryad.zw3r228cj |