A Sampling Technique for Population and Mortality Factors of the Fruit-Tree Leaf Roller, Archips argyrospilus (Wlk.) (Lepidoptera: Tortricidae), on Apple in Quebec

Abstract

Sampling techniques for population^ and mortality factors of cl~e fruit-tree leaf roller, Archips argyrospilus (Wlk.), on apple in Quebec, were developed at Rougemont from 1958 to 1960 with the object of obtaining reliable statistics for life tables on this species. Biometric teclltliques have not previously been applied for ecological studies of A. argyrospilzts, most workers having been primarily concerned with life history, chemical control, and general observations on natural control factors (Gill

Microbial control of the fruit tree leafroller,Archips argyrospila [Lep.: Tortricidae] in California

“…Subsequent estimates of the trees serving as controls, where there was greater defoliation, gave somewhat higher ratios and in all cases the population densities were negatively correlated with larval size. These findings accord with those of previous workers (PARADIS & LE ROUX, 1962).…”

“…in the U.S. and Canada (PARADIS & LE ROUX, 1962, 1965POWELL, 1962;PROKOPY, 1968), the larvae are considered serious pests of apples (HoYT & CALTAGmONE, 1971), and damage the fruits and foliage of a wide range of fruit and ornamental trees (Essm, 1958). In California, A. argyrospila larvae frequently are pests on highway landscape plantings of redbud trees, Cercis occidentalis, where they may cause severe defoliation.…”

Parasitism of the Spring Leafroller (Lepidoptera: Tortricidae) Complex in Organically Managed Apple Orchards in The North Okanagan Valley of British Columbia

“…in the Netherlands (Evenhuis & Vlug 1983), C. rosaceana in Quebec (Cusson et al 1998) and Archips argyrospilus in Quebec (Paradis & LeRoux 1962). It is also a known parasitoid of the spruce budworm, Choristoneura fumiferana (Clemens) (Huber et al 1996, Cusson et al 2002 which is common on conifers neighbouring some orchards in this study.…”

Recherches sur la Biologie et la Dynamique des Populations Naturelles d'Archips argyrospilus(Wlk.) (Lépidoptères: Tortricidae) dans le Sud-ouest du Québec

“…Ces recherches, centrées avant tout sur l'espace évoluant dans la complexité de son habitat naturel, ont été poursuivies de 1956 1 1963 1 dans un verger commercial situé 1 Rougemont, Québec. Quelques-uns des résultats obtenus ont déjl tait l'objet de publications, notamment ceux se rapportant A la répression chimique de l'insecte ainsi que certains résultats bio-écologiques préliminaires (Paradis, 1962B;Paradis et LeRoux, 1962), cependant le présent travail constitue un exposé aussi complet que possible englobant, en plus des considérations d'ordre historique et géographique sur 1 1 espace, tous les résultats de recherches et observations portant sur sa diagnose, son éthologie et son écologie.…”