%0 Journal Article %T Exig¨ºncias t¨¦rmicas e estimativa do n¨²mero de gera£¿£¿es de Bonagota cranaodes (Meyrick) (Lepidoptera: Tortricidae) em regi£¿es produtoras de ma£¿£¿ do Sul do Brasil %A Botton %A Marcos %A Nakano %A Oct¨¢vio %A Kovaleski %A Adal¨¦cio %J Anais da Sociedade Entomol¨®gica do Brasil %D 2000 %I Scientific Electronic Library Online %R 10.1590/S0301-80592000000400002 %X the thermal requirements of the apple leafroller bonagota cranaodes (meyrick) (lepidoptera: tortricidae) were estimated at four constant temperatures (14, 18, 22 e 26oc) in laboratory (70¡À10% r.h. and 14:10l:d). artificial diet was fed to the insects. the low threshold temperature and thermal requirement for eggs, larvae, pupae and biological cycle (egg to adult) were 7,2 e 140; 7,1 e 410; 6,4 e 183 e 6,8oc and 745 gd, respectively. it was estimated that this species complete three to four annual generations. in the three regions, one generation occurs during the winter. %K insecta %K ecology %K behaviour %K threshold temperature %K apple leafroller. %U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0301-80592000000400002&lng=en&nrm=iso&tlng=en