Development and Population Increase of Two-Spotted Spider Mite, Tetranychus urticae Koch (Green Form) (Acari: Tetranychidae) on Different Varieties of Chrysanthemum.

Kondo, Akira; Chiwaki, Kenji; Tanaka, Fukusaburo

doi:10.1303/jjaez.42.28

Cited by 4 publications

(3 citation statements)

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“…To investigate the mechanisms of resistance to mites, it was necessary to examine the effects of the resistant cultivars of carnation on the performance of mites. In chrysanthemum, differences among cultivars were observed with respect to fecundity, developmental time and survival rate, and these variables were correlated . However, it was difficult to clarify the resistance factors for mites by only comparing the cultivars that varied in hereditary background.…”

Section: Discussionmentioning

confidence: 99%

“…In chrysanthemum, differences among cultivars were observed with respect to fecundity, developmental time and survival rate, and these variables were correlated. 16 However, it was difficult to clarify the resistance factors for mites by only comparing the cultivars that varied in hereditary background. Therefore, I constructed an inbred population of carnations by selfing to resolve these problems.…”

Section: Discussionmentioning

confidence: 99%

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Leaf‐morphology‐assisted selection for resistance to two‐spotted spider mite Tetranychus urticae Koch (Acari: Tetranychidae) in carnations (Dianthus caryophyllus L)

Seki

2016

Pest Management Science

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Leaf‐morphology‐assisted selection for resistance to two‐spotted spider mite Tetranychus urticae Koch (Acari: Tetranychidae) in carnations (Dianthus caryophyllus L)

Seki

2016

Pest Management Science

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“…In a previous report, only one cultivar was discussed (van de Bund and Helle, 1960). The degree of host acceptance by spider mites differs with the cultivar in the chrysanthemum (Kondo et al, 1998) and strawberry (Ferrer et al, 1993); thus, carnation cultivars might also affect the degree of host acceptance of g-s. We preliminarily observed two cultivars in a greenhouse. Di-24 was heavily damaged by g-s and Di-7 was not damaged.…”

Section: Introductionmentioning

confidence: 99%

Carnation cultivar susceptibility to the green form of two-spotted spider mite Tetranychus urticae Koch (Acari: Tetranychidae)

Seki¹,

Toyoshima²

2008

Appl. Entomol. Zool.

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The red form of Tetranychus urticae Koch, the two-spotted spider mite, is known to cause damage to carnations. Previously, it was thought that the green form of the two-spotted spider mite did not damage carnations; however, in recent years, this has been rejected. Using two carnation breeding cultivars, Di-24 was damaged by the green form and Di-7 was not. The host plant acceptance, fecundity, survival rate and developmental time for the green form were investigated for each cultivar. The green form had high performance (host plant acceptance, fecundity, survival rate and developmental time) on Di-24 than on Di-7. The results of these experiments clearly show that a susceptible cultivar to the green form exists in carnations. The mechanism of host-range expansion of the green form may have involved changes to carnation cultivars.

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The effect of chrysanthemum leaf trichome density and prey spatial distribution on predation of Tetranychus urticae (Acari: Tetranychidae) by Phytoseiulus persimilis (Acari: Phytoseiidae)

Skirvin¹,

Stavrinides²

2003

Bull. Entomol. Res.

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The effect of plant architecture, in terms of leaf hairiness, and prey spatial arrangement, on predation rate of eggs of the spider mite, Tetranychus urticae Koch, by the predatory mite Phytoseiulus persimilis Athias-Henriot was examined on cut stems of chrysanthemums. Three levels of leaf hairiness (trichome density) were obtained using two different chrysanthemum cultivars and two ages within one of the cultivars. The number of prey consumed by P. persimilis was inversely related to trichome density. At low prey densities (less than ten eggs per stem), prey consumption did not differ in a biologically meaningful way between treatments. The effect of prey spatial arrangement on the predation rate of P. persimilis was also examined. Predation rates were higher in prey patches on leaves adjacent to the release point of P. persimilis, but significantly greater numbers of prey were consumed in higher density prey patches compared to low density patches. The predators exhibited non-random searching behaviour, spending more time on leaves closest to the release point. The implications of these findings for biological control and predator-prey dynamics are discussed.

show abstract

Development and Population Increase of Two-Spotted Spider Mite, Tetranychus urticae Koch (Green Form) (Acari: Tetranychidae) on Different Varieties of Chrysanthemum.

Cited by 4 publications

References 0 publications

Leaf‐morphology‐assisted selection for resistance to two‐spotted spider mite Tetranychus urticae Koch (Acari: Tetranychidae) in carnations (Dianthus caryophyllus L)

Leaf‐morphology‐assisted selection for resistance to two‐spotted spider mite Tetranychus urticae Koch (Acari: Tetranychidae) in carnations (Dianthus caryophyllus L)

Carnation cultivar susceptibility to the green form of two-spotted spider mite Tetranychus urticae Koch (Acari: Tetranychidae)

The effect of chrysanthemum leaf trichome density and prey spatial distribution on predation of Tetranychus urticae (Acari: Tetranychidae) by Phytoseiulus persimilis (Acari: Phytoseiidae)

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