Zur Bekämpfung der Buchenwollschildlaus(Cryptococcus fagi Bär.) mit chemischen Mitteln

Küthe, K.; Krämer, K.

doi:10.1007/bf02117580

Cited by 5 publications

(2 citation statements)

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“…In the U.K. and Europe where Cfagisuga is indigenous, infestations are typically distributed throughout the forest and heavily infested and uninfested trees frequently occur together (Boodle & Dallimore,191 1; Thomsen e t al., 1949;Kuthe & Kramer, 1961). Second instars and adults of beech scale are sessile and dispersal of the mobile first instars is mainly local (Wainhouse, 1980) and their deposition on new hosts is inefficient (Wainhouse, 1979, and unpublished) but these factors appear not t o limit the spread of beech scale.…”

Section: Introductionmentioning

confidence: 99%

Intraspecific variation in beech scale populations and in susceptibility of their host Fagus sylvatica

Wainhouse

Howell

1983

Ecological Entomology

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1. Within a seed orchard in southern England, beech trees (Fagus sylvatica L.) belonging to three clones were artificially infested by introducing beech scale larvae (Cryptococcus fagisuga Lind. Hornoptera: Coccidae) into small cages attached t o the bark.2. Some larvae developed t o fecund adults on trees of two susceptible clones but all failed t o develop on a third, resistant clone.3. Within susceptible clones, survival of larvae on individual trees was positively related t o their degree of natural infestation.4. Larvae deriving from several separate trees differed significantly in their ability to survive when inoculated onto trees of susceptible clones. 5. Five forest trees which acted as both donors of larvae and as hosts for artificial inoculation were each inoculated with larvae from all five trees.6. There was significant variation in survival of inoculated larvae both between the host trees and between sources of larvae on each host. 7. Survival of larvae reinoculated onto their original host was significantly higher than that of larvae originating from other trees.8. Fecundity of adults on the forest trees was positively correlated with the probability of inoculated larvae surviving to the adult stage.

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Section: Introductionmentioning

confidence: 99%

Intraspecific variation in beech scale populations and in susceptibility of their host Fagus sylvatica

Wainhouse

Howell

1983

Ecological Entomology

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“…Heavily infested and uninfested or only lightly infested trees often occur adjacent to each other (Boodle and Dallimore, 1911 ;Thomsen et al, 1949 ;Kuthe and Kramer, 1961 ;Shigo, 1964). In many cases such differences persist for many years and are unlikely to have resulted from escape from attack as the estimated mean distance of larval dispersal from a heavily infested tree in the forest is about 10 m in windspeeds of < 1 ms-I (Wainhouse, in press).…”

Section: Introductionmentioning

confidence: 99%

Variation in susceptibility of beech (Fagus spp) to beech scale (Cryptococcus fagisuga)

Wainhouse¹,

Deeble²

1980

Ann. For. Sci.

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SummaryData are presented showing clonal differences in severity of attack by Cryptococcus fagisuga on beech scions in three seed orchards in southern England. These differences may be due to genetically controlled resistance or to stock/scion incompatibility producing changes in the scion favourable for growth and development of C. fagisuga. It is concluded that differences are probably genetic in origin but that host response to attack and environmental factors probably interact to produce the complex pattern of attack seen in the forest.

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Beech Resistance to the Beech Scale: A Variety of Defenses

Wainhouse¹,

Gate²,

Lonsdale³

1988

Mechanisms of Woody Plant Defenses Against Insects

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Zur Bekämpfung der Buchenwollschildlaus(Cryptococcus fagi Bär.) mit chemischen Mitteln

Cited by 5 publications

References 0 publications

Intraspecific variation in beech scale populations and in susceptibility of their host Fagus sylvatica

Intraspecific variation in beech scale populations and in susceptibility of their host Fagus sylvatica

Variation in susceptibility of beech (Fagus spp) to beech scale (Cryptococcus fagisuga)

Beech Resistance to the Beech Scale: A Variety of Defenses

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