Differences in seasonal variation between two biotypes of Megamelus scutellaris (Hemiptera: Delphacidae), a biological control agent for Eichhornia crassipes (Pontederiaceae) in Florida

Jeremiah R. Foley, Carey Minteer, Philip W. Tipping

Abstract


Two biotypes (Paraguay and Argentine) of Megamelus scutellaris (Berg) (Hemiptera: Delphacidae), a biological control agent for waterhyacinth, were tested for differences in number of progeny, development time, and weight across average south Florida seasonal temperatures. Significant differences between the biotypes were found at summer temperatures. In general, progeny of the Paraguay biotype weighed more than those of the Argentine biotype during the summer.

 

Sumario

Se probaron dos biotipos (Paraguay y Argentina) de Megamelus scutellaris (Berg) (Hemiptera: Delphacidae), un agente de control biológico del jacinto de aguas para las diferencias en el número de progenie, el tiempo de desarrollo y el peso a través del promedio de temperatura estacional del sur de la Florida. Se encontraron diferencias significativas entre los biotipos durante las temperaturas del verano. En general, la progenie del biotipo Paraguay pesa más que las del biotipo Argentina durante el verano.

 

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Keywords


waterhyacinth; classical biological control; temperature range; development time

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