Journal of Medical Entomology (2011) 48, 212-222

Motoyoshi Mogi (2011)
Variation in cold hardiness of nondiapausing eggs of nine Aedes (Stegomyia) species (Diptera: Culicidae) from eastern Asia and Pacific Islands ranging from the tropics to the cool-temperate zone
Journal of Medical Entomology 48 (2), 212-222
Abstract: Variation in cold hardiness was studied in the laboratory for the nondiapausing eggs of nine Aedes (Stegomyia) species from eastern Asia and Pacific islands, ranging from the tropics to the cool-temperate zone. Species included were Aedes aegypti (L.), Aedes albopictus (Skuse), Aedes flavopictus Yamada, Aedes galloisi Yamada, Aedes hensilli Farner, Aedes palauensis Bohart, Aedes paullusi Stone and Farner, Aedes riversi Bohart and Ingram, and Aedes scutellaris (Walker). For species with distributions covering two or three climatic zones, at least one population was included from each zone, except for Ae. aegypti (subtropical populations were unavailable). Some eggs of four species confined to the tropical zone survived short exposure to freezing temperature (≥-5°C) when humidity was high. There were inter- and intraspecies variations in cold hardiness of nondiapausing eggs. Cold hardiness in each climatic zone differed in that populations of species with more northerly distributions were more cold-hardy than species with southerly distributions. In Ae. albopictus and Ae. flavopictus that cover three climatic zones, populations from cooler regions were more cold-hardy than populations from warmer regions. A possibility of southern species without diapausing eggs to colonize temperate eastern Asia was discussed.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
environment - cropping system/rotation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Aedes albopictus		Indonesia
	Aedes albopictus		Japan
	Aedes aegypti		Indonesia
	Aedes paullusi		Indonesia
	Aedes flavopictus		Japan
	Aedes hensilli		Palau Islands
	Aedes scutellaris		Indonesia
	Aedes palauensis		Palau Islands
	Aedes riversi		Japan
	Aedes galloisi		Japan
	Aedes galloisi		Korea-South