Science and Mathematics Faculty Publications

Title

Developmental Rates, Thresholds and Thermal Constants of the Egg Parasitoid Anastatus semiflavidus (Hymenoptera: Eupelmidae) and Its Host Hemileuca oliviae (Lepidoptera: Saturniidae)

Document Type

Article

Publication Date

7-1989

Journal Title

Journal of Kansas Entomological Society

Volume

62

Issue

3

First Page

300

Last Page

306

Abstract

The effects of temperature on the development of the egg parasitoid, Anastatus semiflavidus Gahan (Eupelmidae, Hymenoptera), and its host the range caterpillar, Hemileuca oliviae Cockerell (Saturniidae, Lepidoptera), were examined. The egg of H. oliviae had a lower developmental threshold (t = 12.9°C) and thermal constant (K = 297.0 day°C) than the egg parasitoid (t = 15.0°C, K = 345.0 day°C). The developmental rate of the egg of H. oliviae peaked at 25°C, slowed at 30°C and no larvae emerged at 35°C. The egg parasitoid developed faster at 30°C than did the egg of H. oliviae, and parasitoid developmental rate continued to increase even at 35°C. Anastatus semiflavidus appeared better adapted to high temperatures than did H. oliviae.

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