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EFFECT OF TEMPERATURE ON OVIPOSITION, FEEDING, AND LONGEVITY OF LIRIOMYZA TRIFOLII (DIPTERA: AGROMYZIDAE)

Published online by Cambridge University Press:  31 May 2012

Michael P. Parrella
Michael P. Parrella
Affiliation:
Department of Entomology, University of California, Riverside 92521
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Abstract

The effect of selected constant temperatures (15.6°, 21.1°, 26.7°, 32.2°, 37.8 °C) on oviposition, feeding, and longevity of Liriomyza trifolii (Burgess) was examined in the laboratory with chrysanthemum, Chrysanthemum morifolium Ramat, as a host plant. There was no significant difference in total feeding at 21.1°, 26.7°, and 32.2 °C nor was there significant difference in egg deposition at these temperatures. The ratio egg deposition: feeding was significantly larger at 26.7 °C. Longevity was similar (12–16 days) at all temperatures except 37.8 °C where it was reduced to ca. 3 days. The effect of temperature was more pronounced when feeding and oviposition were analyzed per day. Maximum feeding occurred at 32.2 °C while significantly more oviposition was found at 26.7 °C. An estimate of the threshold temperature for oviposition was 12.2 °C which was higher than that observed experimentally (10 °C). Ninety percent of oviposition occurred with 550°D of adult female life (above base 10 °C).

Résumé

L'effet de températures constantes choisies (15.6°, 21.1°, 26.7°, 32.2 °et 37.8 °C) sur la ponte, l'alimentation et la longévité de Liriomyza trifolii (Burgess) a été étudié en laboratoire en utilisant le chrysanthème, Chrysanthemum morifolium Ramat, comme plante-hôte. Aucune différence significative n'a été observée entre 21.1°, 26.7 °et 32.2 °C pour l'ingestion totale, ni pour l'oviposition. Le rapport oviposition : ingestion s'est avéré significativement plus élevé à 26.7 °C. La longévité était semblable (12 à 16 jours) à toutes les températures sauf à 37.8 °C, alors qu'elle était réduite à environ 3 jours. L'effet de la température s'est révélé plus prononcé lorsque l'alimentation et la ponte ont été analysées séparément pour chaque jour. L'ingestion maximale a été observée à 32.2 °C, alors que l'oviposition était significativement plus élevée à 26.7 °C. Le seuil thermique de ponte a été estimé à 12.2 °C, ce qui est plus élevé que celui observé expérimentalement (10 °C). Quatrevingt-dix pourcent de l'oviposition était réalisé après l'accumulation de 550 degrés-jours au-dessus de 10 °C, depuis le début de la vie adulte de la femelle.

Type
Articles
Information
The Canadian Entomologist , Volume 116 , Issue 1 , January 1984 , pp. 85 - 92
Copyright
Copyright © Entomological Society of Canada 1984

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