Laboratory Studies on the Adult Behavior of Conophthorus coniperda(Coleoptera: Scolytidae). III. Flight

Autor:	W. R. Henson
Rok vydání:	1962
Předmět:	Prolonged exposure Ecology Insect Science Conophthorus coniperda Zoology Free flight Biology Overwintering
Zdroj:	Annals of the Entomological Society of America. 55:524-530
ISSN:	1938-2901 0013-8746
Popis:	Adults of the white-pine cone beetle, Conophthorus coniperda (Schwarz), undertook spontaneous flight most frequently at temperatures between 27.5° and 35° C, Flight frequency was increased by exposure to dry air, although prolonged exposure resulted in water loss and cessation of flight. Preliminary exposure to light also increased flight frequency. On flight mills, beetles flew continuously for periods up to 5 hours, but the great majority of tethered flights were of only a few minutes' duration. In free flight the insects oriented to a point source of light; with diffuse light they were still photopositive, and tended to fly a horizontal course and to orient to dark silhouettes. These mechanisms would result in the movement of the beetles from their overwintering sites to the cone-bearing terminals of the trees. The mean duration of flight in the field is probably rather short, because the beetles would fly just above the mean crown surface and would orient to the dark silhouettes of the dominant leaders.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e7728b86c12aebd8c7b27dd6c7240e08 https://doi.org/10.1093/aesa/55.5.524 Zobrazit plný text záznamu