Florida Entomologist (2004) 87, 6-9
J.P. Michaud and C.L. McKenzie (2004)
Safety of a novel insecticide, sucrose octanoate, to beneficial insects in Florida citrus
Florida Entomologist 87 (1), 6-9
Abstract: Laboratory trials were used to estimate the toxicity of sucrose octanoate to beneficial insects representing four insect orders of importance in biological control in Florida citrus. First instars of the ladybeetles Cycloneda sanguinea L., Curinus coeruleus Mulsant, Harmonia axyridis Pallas and Olla v-nigrum Mulsant (Coleoptera: Coccinellidae) and the lacewing Chrysoperla rufilabris Burmeister (Neuroptera: Chrysopidae) survived topical sprays of sucrose octanoate at 8,000 ppm without significant mortality, a concentration corresponding to twice the recommended field rate required to kill aphids and other soft bodied pests. Similarly, adults of the red scale parasitoid, Aphytis melinus De Bach (Hymenoptera: Aphelinidae) and second instars of the predatory bug Orius insidiosus (Say) (Hemiptera: Anthocoridae) survived 24 h exposures to residues of 8,000 ppm sucrose octanoate on leaf disks without significant mortality. The efficacy of sucrose octanoate as a contact insecticide against various homopteran pests of citrus, combined with its low toxicity to key beneficial insects in the citrus ecosystem, suggest that it may be a valuable material for incorporation into IPM programs for Florida citrus.
Pruebas de laboratorio fueron usadas para estimar la toxicidad de octanoate de sucrosa para insectos benéficos representantes de cuatro ordenes. Larvas de primer estadió de los cocinelidos Cycloneda sanguinea L., Curinus coeruleus Mulsant, Harmonia axyridis Pallas y Olla v-nigrum Mulsant y el crisópido Chrysoperla rufilabris Burmeister sobrevivieron asperciones topicales de octanoate de sucrosa en dosis de 8,000 ppm sin mortalidad significativa, una concentración corespondiente al doble de la dosis necesaria para matar áfidos y otras plagas homópteras en cítricos. En forma parecida, adultos del parásitoide de la escama roja, Aphytis melinus De Bach (Hymenoptera: Aphelinidae) y ninfas de segundo estadió de Orius insidiosus (Hemiptera: Anthocoridae) sobrevivieron sin mortalidad significativa un periodo de 24 h expuestos a dosis residuales de octanoate de sucrosa de 8,000 ppm aplicadas en discos de hoja. La eficacia del octanoate de sucrosa como insecticida de contacto contra varias plagas homópteras de cítricos, en combinación con su toxicidad baja contra insectos benéficos en el ecosystema citrícola, sugiere que este material puede ser valioso para inclusión en programas de IPM en cítricos en la Florida.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Full text of article
Database assignments for author(s): J.P. Michaud, Cindy L. McKenzie
Research topic(s) for pests/diseases/weeds:
control - general
health/environmental effects of pesticides
Research topic(s) for beneficials or antagonists:
resistance to pesticides
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Chrysoperla rufilabris (predator) | U.S.A. (SE) | |||
| Harmonia axyridis (predator) | U.S.A. (SE) | |||
| Orius insidiosus (predator) | U.S.A. (SE) | |||
| Aphytis melinus (parasitoid) | U.S.A. (SE) | |||
| Cycloneda sanguinea (predator) | U.S.A. (SE) | |||
| Curinus coeruleus (predator) | U.S.A. (SE) | |||
| Olla v-nigrum (predator) | U.S.A. (SE) |
