Accelerated Abscission of Cranberry Leaves Damaged by the Leafminer, Coptodisca negligens (Lepidoptera: Heliozelidae)
1989; Oxford University Press; Volume: 18; Issue: 5 Linguagem: Inglês
10.1093/ee/18.5.773
ISSN1938-2936
Autores Tópico(s)Insect Pheromone Research and Control
ResumoThe effect of damage by the heliozelid leafminer, Coptodisca negligens Braun, on abscission of cranberry, Vaccinium macrocarpon Aiton, leaves was studied in Connecticut during 1986. The abscission of second-year leaves was significantly greater and earlier on wild and potted vines with leafminer injury than on those without injury. The mean week of abscission was significantly earlier (about 1 wk) for leaves with two miners than for those with one miner. Wild plants in a bog dropped most of their mined leaves during June when fourth instars of C. negligens were completing their development. In the laboratory, 90% of 20 fourth instars in detached leaves survived to construct oval leaf cases for pupation.
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