The thermal constant for timing the emergence of the Red Palm Weevil, Rhynchophorus ferrugineus (Oliv.) (Coleoptera, Curculionidae)

Autor:	M. K. Hamdy, M. Magd El-Din, H. S. Salama
Rok vydání:	2002
Předmět:	Pupa Rhynchophorus Horticulture biology Heating energy Insect Science Weevil Curculionidae Botany biology.organism_classification Palm Thermal constant Degree (temperature)
Zdroj:	Anzeiger fur Schdlingskunde. 75:26-29
ISSN:	1439-0280 1436-5693
DOI:	10.1046/j.1439-0280.2002.02004.x
Popis:	The pupal duration of the red palm weevil, Rhynchophorus ferrugineus (Oliv.) at two different temperatures revealed that the thermal threshold is – 2.3 °C, while the thermal constant is 423 degree days. Around 20.7 cycles of weevil emergence per year have been predicted in Egypt. A temperature between 44 – 45 °C was found to be the higher threshold at which the pupae are killed. The heat units required for the pupal development were utilized to predict the dates of adult emergence throughout the year.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d32e3cd61d51c44a2c60b316b08b579e https://doi.org/10.1046/j.1439-0280.2002.02004.x Zobrazit plný text záznamu Full text from SpringerLink Plný text