Fall Armyworm Symposium: Noctuidonema Guyanense: An Ectoparasitic Nematode of Fall Armyworm Adults in the Tropical Americas

C. E. Rogers, A. M. Simmons, O. G. Marti

Abstract


Noctuidonema guyanense Remillet and Silvain is an ectoparasitic nematode that attacks the adult stage of Spodoptera frugiperda (J. E. Smith) and a few other species of Noctuidae. The nematode is widely distributed in the neotropics from French Guiana to Florida through the Caribbean Basin, and from Colombia, South America to Texas, North America through mainland countries. Both incidence and intensity of host infestation by N. guyanense are greater in Caribbean Basin countries than in the mainland countries. Low relative humidity and low and high temperature adversely impact N. guyanense population dynamics in the laboratory. Infestation by N. guyanense exhibits an insidious, chronic pathogenicity in hosts. The biology of N. guyanense and its acute pathogenicity and mechanics of transmission among hosts remain virtually unknown.

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