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1 February 2015 Diaphorina citri (Hemiptera: Liviidae) Abundance in Puerto Rico Declines with Elevation
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Abstract

Diaphorina citri Kuwayama is the primary vector of Huanglongbing, the most devastating disease of citrus. D. citri populations in Puerto Rico were monitored with yellow sticky traps on citrus trees or other psyllid host plants at different elevations, ranging from 10 to 880m above sea level. Trapping was conducted in March through May of 2013 and 2014 when psyllid populations usually are highest. Population levels of D. citri, based on the trapping data, varied among the sites, and there was a strong trend in both years for decreasing psyllid abundance with increased elevation based on the number of psyllids captured on traps and the proportion of trees shown to be infested. No psyllids were collected at an elevation of >600 m. Reduced populations at higher elevations could be a consequence of differences in temperature, air pressure, oxygen levels, ultraviolet light, or other factors alone or in combination. We discuss our results as they pertain to management of D. citri and Huanglongbing.

Published by Oxford University Press on behalf of Entomological Society of America. 2015. This work is written by US Government employees and is in the public domain in the US.
David A. Jenkins, David G. Hall, and Ricardo Goenaga "Diaphorina citri (Hemiptera: Liviidae) Abundance in Puerto Rico Declines with Elevation," Journal of Economic Entomology 108(1), 252-258, (1 February 2015). https://doi.org/10.1093/jee/tou050
Received: 19 August 2014; Accepted: 21 November 2014; Published: 1 February 2015
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