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Viability and developmental rate of overwintering eggs of Trichosirocalus horridus (Coleoptera: Curculionidae)

, : Viability and developmental rate of overwintering eggs of Trichosirocalus horridus (Coleoptera: Curculionidae). Environmental Entomology, 143: 284-288

The developmental rate of eggs of Trichosirocalus horridus, a weevil introduced into the USA for the biological control of Carduus, in the laboratory was 0.0343 - (0.0071 x temp in degrees C). Egg hatch threshold was 4.8 degrees C. Successful overwintering of eggs was affected by low temperatures at initial exposure. Eggs survived well when initially exposed to relatively high field temperatures between early November and mid-December, and from late February to March.

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Accession: 001507472

DOI: 10.1093/ee/14.3.284

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