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13-Jun-2017 18:09

It has thus been hypothesized that the two events were connected.

The quantity and diversity of flora in a habitat are associated with the quality and availability of resources to insects.

longipalpis captured during 5 days in the tropical urban environment of Teresina, Piauí State.

Fifty-seven percent of the flies were found positive for plant DNA.

We used rbc L PCR to detect and identify plant DNA in the guts of 100 L.

The proportion of sand flies testing positive for DNA of a given plant family was not significantly correlated with local abundance of plants from that family, average distance of plants from the trap, or average crown expansion of plants in the family (Fig. A statistically significant, negative correlation was found between the average distance between plants from a family and the trap and their average crown expansion (Pearson r = −0.77; p = 0.002) (Fig. Red represents a negative correlation and blue represents a positive correlation. Relationships are presented for (A) proportion of sand flies testing positive for DNA from a given plant family, (B) average distance of plants from a given family to a trap, (C) average crown expansion of plants from a given family, and (D) local abundance of plants from a given family.

A strong negative correlation was observed between the distance of plants from a given family to the trap and the average crown expansion of plants from that family.

DNA from all trees or shrubs within a 100-meter radius from the trap were collected to build a barcode reference library.

While plants from the Anacardiaceae and Meliaceae families were the most abundant at the sampling site (25.4% and 12.7% of the local plant population, respectively), DNA from these plant families was found in few flies; in contrast, despite its low abundance (2.9%), DNA from the Fabaceae family was detected in 94.7% of the sand flies.

One application of this technique, therefore, would be informing vector control measures, such as urban landscaping techniques, for leishmaniasis and other vectorborne diseases.