Spatial/temporal model for survivability of pea leafminer (Liriomyza huidobrensis) in warm climates: a case study in South Florida, USA
2005
Milla, Katherine | Reitz, Stuart
Due to a recently-developed resistance to broad spectrum pesticides, the highly invasive pea leafminer, Liriomyza huidobrensis, has become a polyphagous pest of vegetable and flower crops in many parts of the world, including most Latin American countries. Although L. huidobrensis is acclimated to cooler climates, the possibility exists that seasonal populations could survive and thus pose a risk during the cool seasons in warm climate regions. This paper reports on a pilot project conducted in South Florida, USA, to test the possibility that L. huidobrensis can survive during cool season months in warm climates. Temporal and spatial analysis of temperature data from South Florida indicate that climatic conditions in the region are consistent with temperature requirements for seasonal development of L. huidobrensis. Favorable climatic conditions, combined with the existence of a major concentration of crop and nursery land uses in the vicinity of the Miami International Airport, a major entry point for potentially infested produce and cut flowers, present a risk of establishment of seasonal populations of L. huidobrensis. This pilot study demonstrates that the potential exists for L. huidobrensis to establish seasonal populations in warmer climates or to survive transport to cooler regions. This potential should raise quarantine concerns even for many parts of the world where year-round populations of L. huidobrensis probably do not pose a threat.
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