STUDIES OF FECUNDITY AND BEHAVIOUR OF THE ORIENTAL FRUIT MOTH, <i>GRAPHOLITHA MOLESTA</i> (LEPIDOPTERA: TORTRICIDAE), ON THE NIAGARA PENINSULA OF ONTARIO

Phillips, J. H. H.; Proctor, Jean R.

doi:10.4039/ent1011024-10

Cited by 7 publications

(5 citation statements)

References 7 publications

(3 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Conversely, summer generation individuals encounter conditions of abundant food and suitable microclimate, thus accumulating greater fat reserves yielding better ovipositional fitness than those experiencing long periods of adverse environmental conditions. Data furnished by Phillips and Proctor 34 infer this conclusion as well. Phillips and Proctor 34 demonstrated that overwintering OFM female fecundity was much lower than that of subsequent summer generations (7.5% versus 14% respectively).…”

Section: Discussionmentioning

confidence: 59%

“…Data furnished by Phillips and Proctor 34 infer this conclusion as well. Phillips and Proctor 34 demonstrated that overwintering OFM female fecundity was much lower than that of subsequent summer generations (7.5% versus 14% respectively). In addition, overwintering generation egg to adult mortality apparently reduced the progeny to only 23% of those observed during either summer generations.…”

Section: Discussionmentioning

confidence: 59%

See 1 more Smart Citation

Hedgerow barriers and other reduced-risk controls for managing Oriental fruit moth, Grapholitha molesta (Busck) (Lepidoptera: Tortricidae) in apples

Garcia-Salazar

Gut

Whalon

2007

Renew. Agric. Food Syst.

View full text Add to dashboard Cite

Management of Oriental fruit moth, Grapholitha molesta (Busck), in apple using an ‘Enhanced Integrated Pest Management (IPM)’ program comprised of a hedgerow barrier, pheromone-based mating disruption and reduced-risk [non-organophosphorous (OP) or carbamate] insecticides was investigated over a 5-year period. The barrier was comprised of a planting of three rows of hybrid poplar, Populus deltoides Bartr.×Populus nigra L., one row of Italian alder, Alnus cordata L. (nectar reward), and one row of white pine, Pinus strobus L. The hedgerow completely surrounded the perimeter of the apple orchard and was treated with garlic and a low rate of pyrethroid insecticide in 4 of the 5 years. The Enhanced IPM program significantly reduced G. molesta populations as measured by moth captures in pheromone traps. Captures of G. molesta were significantly higher in apple orchards treated with OP and carbamate insecticides, ‘Conventional IPM’, and either not surrounded by the hedgerow or with the barrier present but not treated with the repellent compounds. To explain these differences in G. molesta control, and the potential non-lethal effect of hedgerow barriers on G. molesta orchard colonization, we studied the adult vertical movement in a traditional unsprayed standard apple orchard at three different heights: 0.95, 1.95 and 3.20 m, respectively. In the overwintering generation at a height of 0.95 and 1.95 m, the mean number of moths captured per sampling period was 14.64 and 14.84, respectively, and only 2.95 at 3.20 m. However, the number of individuals captured in the second and third generations was not significantly different at the three different heights. Fruit damage evaluated before ‘June drop’ closely corresponded to the distribution of moths captured during the overwintering generation. Fruit damage at a height of 1.95 and 3.20 m was 5.8 and 3.5%, respectively. These results indicated that G. molesta is a weak flyer and that hedgerow barriers exerted some influence in the colonization of the orchard by limiting the free movement of adults from the overwintering generation. Thus, hedgerow barriers seem to limit early migration and establishment of G. molesta in the orchard. This in turn may reduce the size of the following generations and makes subsequent control easier under the Enhanced IPM program.

show abstract

Section: Discussionmentioning

confidence: 59%

Section: Discussionmentioning

confidence: 59%

Hedgerow barriers and other reduced-risk controls for managing Oriental fruit moth, Grapholitha molesta (Busck) (Lepidoptera: Tortricidae) in apples

Garcia-Salazar

Gut

Whalon

2007

Renew. Agric. Food Syst.

View full text Add to dashboard Cite

show abstract

“…Examination of data based upon these factors showed no evidence of a directional effect. Phillips and Proctor (1969) reported high levels of variability in oviposition by G. molesta females in caged tree studies, with some females laying no eggs. Whereas both female and male adults may mate more than once, they rarely mate more than once within a given 24-h period (Dustan 1964).…”

Section: Discussionmentioning

confidence: 94%

Effects of Orchard Host Plants on the Oviposition Preference of the Oriental Fruit Moth (Lepidoptera: Tortricidae)

Myers

Hull

Krawczyk

2006

View full text Add to dashboard Cite

Recently, the oriental fruit moth, Grapholita molesta (Busck) (Lepidoptera: Tortricidae), has emerged as a major problem on apples (Malus spp.) grown in the mid-Atlantic and midwestern United States, despite its historically important and frequent occurrence as a peach (Prunus spp.) pest. It is possible that host-driven biological phenomena may be contributing to changes in G. molesta population dynamics resulting in outbreaks in apple. Studies were designed to examine the effects of host plants on oviposition behavior, in an effort to clarify the host association status of eastern U.S. populations and also to gain insight into how pest modeling and management efforts may be altered to take into account various host-associated effects. G. molesta adults exhibited ovipositional preference for nonbearing peach trees over nonbearing apple trees in close-range choice tests conducted in the field, regardless of the larval host origin. A significant preference for peach shoots over apple shoots was observed on six of 12 sampling dates with a wild G. molesta population at the interface of adjacent peach and apple blocks. Numbers of eggs found on apple fruit were higher after peach fruit were harvested and apple fruit began to approach maturity (during the flight period for third and fourth brood adults). Possible implications for population modeling and integrated management of G. molesta are discussed.

show abstract

“…On each shoot, three neonate larvae were placed with a camelÕs-hair brush to compensate for anticipated large levels of larval mortality (Wylie 1966, Phillips andProctor 1969). The total number of larvae placed was recorded for each tree (ranged from 24 to 210, depending upon shoot availability).…”

Section: Methodsmentioning

confidence: 99%

Comparative Survival Rates of Oriental Fruit Moth (Lepidoptera: Tortricidae) Larvae on Shoots and Fruit of Apple and Peach

Myers

Hull

Krawczyk

2006

View full text Add to dashboard Cite

Studies were designed to examine the effects of host plants on oriental fruit moth, Grapholita molesta (Busck) (Lepidoptera: Tortricidae), survival. G. molesta larval survival in the orchard was comparable between apple (Malus spp.) and peach (Prunus spp.) shoots, indicating that both host species can harbor large larval populations during the early season. G. molesta larvae used multiple shoots for feeding and development on peaches but usually only damaged single shoots in apple. Survival differences were present between peach and apple fruit, but this survival was affected by fruit maturity level. Generally, larval survival higher was in ripening peach fruit than in green, immature apple fruit. Larval survival varied among several apple cultivars, indicating that cultivar-level variability needs to be considered. These host-associated effects may impact efforts to predictively model G. molesta populations in commercial orchards where multiple host plant species, or different cultivars of the same species are often grown in proximity. Thus, host-associated dynamics should be included into future population models that underlie management programs.

show abstract

STUDIES OF FECUNDITY AND BEHAVIOUR OF THE ORIENTAL FRUIT MOTH, GRAPHOLITHA MOLESTA (LEPIDOPTERA: TORTRICIDAE), ON THE NIAGARA PENINSULA OF ONTARIO

Cited by 7 publications

References 7 publications

Hedgerow barriers and other reduced-risk controls for managing Oriental fruit moth, Grapholitha molesta (Busck) (Lepidoptera: Tortricidae) in apples

Hedgerow barriers and other reduced-risk controls for managing Oriental fruit moth, Grapholitha molesta (Busck) (Lepidoptera: Tortricidae) in apples

Effects of Orchard Host Plants on the Oviposition Preference of the Oriental Fruit Moth (Lepidoptera: Tortricidae)

Comparative Survival Rates of Oriental Fruit Moth (Lepidoptera: Tortricidae) Larvae on Shoots and Fruit of Apple and Peach

Contact Info

Product

Resources

About