caa a22 4500 397546424 CHVBK 20180308164739.0 cr unu---uuuuu 161202e19960701xx s 000 0 eng 10.1093/aesa/89.4.564 doi (NATIONALLICENCE)oxford-10.1093/aesa/89.4.564 Keena Melody A. Northeastern Center for Forest Health Research, USDA-Forest Service, Hamden, CT 06514. Comparison of the Hatch of Lymantria dispar (Lepidoptera: Lymantriidae) Eggs from Russia and the United States after Exposure to Different Temperatures and Durations of Low Temperature [Elektronische Daten] [Melody A. Keena] Comparisons are made of the effects of temperature and duration of low temperature on egg hatch of North American and Russian gypsy moth, Lymantria dispar (L.), under controlled laboratory conditions. Percentage of hatch of embryonated eggs, days to 1st hatch after incubation at warm temperature and temporal distribution of hatch are used to compare hatch of different strains under various conditions. Eggs from 2 Russian gypsy moth strains required less exposure to low temperature to be able to hatch than did eggs from a North American strain. Hatch took longer to begin and proceeded more slowly in eggs held at constant 15 and 20°C. Hatch did not occur for >99% of North American and Russian eggs held at a constant 25°C. Substantial variation in hatch in response to low temperature exists both within and between gypsy moth strains, making adaptation to a wide range of climates possible. Variation in diapause requirements within a strain and between strains can be assessed and compared by holding eggs for 60 d at 5°C followed by incubation at 25°C. © 1996 Entomological Society of America Physiology, Biochemistry, and Toxicology nationallicence Lymantria dispar nationallicence temperature nationallicence diapause nationallicence gypsy moth nationallicence eggs nationallicence Annals of the Entomological Society of America Oxford University Press 89/4(1996-07-01), 564-572 0013-8746 89:4<564 1996 89 aesa https://doi.org/10.1093/aesa/89.4.564 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/aesa/89.4.564 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Keena Melody A. Northeastern Center for Forest Health Research, USDA-Forest Service, Hamden, CT 06514 NATIONALLICENCE 773 0- Annals of the Entomological Society of America Oxford University Press 89/4(1996-07-01), 564-572 0013-8746 89:4<564 1996 89 aesa Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford