Host-race formation in the two-spotted spider mite (Tetranychus urticae)

Bruin, Jan; Gotoh, Tetsuo; Sabelis, Maurice W.; Menken, Steph B. J.; Ginkel, W.E. van

doi:10.1007/978-94-011-1654-1_67

Cited by 2 publications

(3 citation statements)

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“…A significant decrease in developmental time led to an increase in r m of 0.040 day −1 . Several authors have shown that T. urticae can adapt to an unsuitable host plant species within approximately 10 generations (Gould, 1979;Fry, 1989;Bruin et al, 1992). This adaptation is fast considering the fact that T. urticae is haplo-diploid which means that reproduction is necessary for the production of daughters.…”

Section: Discussionmentioning

confidence: 99%

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Intrinsic rate of population increase of the spider mite Tetranychus urticae on the ornamental crop gerbera: intraspecific variation in host plant and herbivore

Krips

Witul²,

Willems

et al. 1998

Entomologia Exp Applicata

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Eight cultivars of the ornamental crop Gerbera jamesonii Bolus (Asteraceae) were compared in host plant suitability for the two spotted spider mite Tetranychus urticae Koch (Acarina: Tetranychidae). This was done by determining the intrinsic rate of population increase, rm, of spider mites on leaf discs of plants from each of the cultivars. Large differences in rm values were found, ranging from 0.088/day on cultivar Bianca to 0.242/day on cultivar Sirtaki. This variation in rm was mainly caused by differences in developmental time of the spider mites. We assessed the performance of spider mites on young and old leaves of the two gerbera cultivars Bianca and Sirtaki. On Sirtaki the spider mites had a shorter developmental time and higher peak oviposition rate on young leaves than on old leaves. However, on Bianca such an effect was not found. We also determined the performance of two spider mite strains on the resistant gerbera cultivar Bianca. We compared the rm of a strain that had been reared on this cultivar for approximately half a year with the rm of a strain that was reared on bean. The rm of the strain that was reared on cultivar Bianca increased to 0.208/day, which is however still substantially lower than the rm on the susceptible cultivar Sirtaki.

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Section: Discussionmentioning

confidence: 99%

“…Gerbera cultivars may differ as well in suitability for spider mites, which would offer good perspectives for resistance breeding. However, since spider mites can rapidly adapt to unsuitable host plants (Gould, 1979;Fry, 1989;Bruin et al, 1992), resistance to spider mites in gerbera may not be durable.…”

Section: Introductionmentioning

confidence: 99%

Intrinsic rate of population increase of the spider mite Tetranychus urticae on the ornamental crop gerbera: intraspecific variation in host plant and herbivore

Krips

Witul²,

Willems

et al. 1998

Entomologia Exp Applicata

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“…When spider mites infest chemically defended or poor-quality plants, their intrinsic rate of natural increase (r m ) should be low (Gould, 1979;Fry, 1989;Bruin et al, 1992; Krips et al, 1998;Agrawal, 2000). In the two-spotted spider mite, Tetranychus urticae Koch, for example, the initial r m -value (0.088/day) on a resistant gerbera cultivar was increased to 0.208/day after they had been reared on this cultivar for five months, but it was still substantially lower than the r m -value on a susceptible cultivar (0.242/day; Krips et al, 1998).…”

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Life-history traits of the Kanzawa spider mite Tetranychus kanzawai (Acari: Tetranychidae).

Gotoh

Gomi

2003

Appl. Entomol. Zool.

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Performance of phytophagous insects and spider mites on different host plants is influenced by the nutritional value and defenses of the plants; important factors include secondary chemicals, leaf nutrition, leaf age and leaf surface structure (Gerson and Aronowitz, 1980; Jaenike, 1990;Wilson, 1994;Van Impe and Hance, 1993; Krips et al., 1998;Agrawal, 2000). When spider mites infest chemically defended or poor-quality plants, their intrinsic rate of natural increase (r m ) should be low (Gould, 1979;Fry, 1989;Bruin et al., 1992; Krips et al., 1998;Agrawal, 2000). In the two-spotted spider mite, Tetranychus urticae Koch, for example, the initial r m -value (0.088/day) on a resistant gerbera cultivar was increased to 0.208/day after they had been reared on this cultivar for five months, but it was still substantially lower than the r m -value on a susceptible cultivar (0.242/day; Krips et al., 1998). Adaptation of mites to unsuitable host plants or novel host plants that are of poor quality is often accompanied by a reduction in fitness, even if the mites are polyphagous.The Kanzawa spider mite, Tetranychus kanzawai Kishida, is an important pest threatening many agricultural crops and ornamental plants in Far Eastern areas. The broad host range of T. kanzawai is due to the presence of host races: the ability to develop on tea, Camellia sinensis L., and hydrangea, Hydrangea macrophylla (Thunb.), containing harmful secondary chemicals for spider mites is regulated by a single dominant gene, 'T' and 'H', respectively (Gomi and Gotoh, 1996, 1997). These genes are thought to be involved in the chemical detoxification of harmful secondary chemicals, such as tannin in tea and hydrangenol in hydrangea (Dowd et al., 1983;Ujihara et al., 1995; Gomi and Gotoh, 1997; Gotoh and Gomi, 2000). Recently, T. parakanzawai Ehara, a sibling species of T. kanzawai, is found on the kudzu vine, Pueraria lobata (Willd.) (Ehara, 1999). The host range of this species overlaps considerably with that of T. kanzawai (Gomi and Gotoh, 1996), but T. parakanzawai never develops on tea or on hydrangea (Gotoh et al., 1999). For effective management of T. kanzawai, we need to know its ecological traits (population growth rate, etc.) on economically important plants. Most of the data obtained thus far are on easily grown host plants such as bean, while few are on crops such as grape (Kondo et al., 1987). The difference of the r m -values among the infested plants affects the actual rates of population growth, that is, how rapid a population increases on AbstractLife-history traits of the Kanzawa spider mite, Tetranychus kanzawai, were assessed and compared with those of the closely related species, T. parakanzawai. This was done by determining the intrinsic rates of natural increase, r m , of three strains of T. kanzawai and one strain of T. parakanzawai, on leaf discs from each of the four host plants (collected plants) as well as one of suitable hosts for T. kanzawai, mulberry. The r m -values of the three T. kanzawai strains varied largely f...

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Host-race formation in the two-spotted spider mite (Tetranychus urticae)

Cited by 2 publications

References 3 publications

Intrinsic rate of population increase of the spider mite Tetranychus urticae on the ornamental crop gerbera: intraspecific variation in host plant and herbivore

Intrinsic rate of population increase of the spider mite Tetranychus urticae on the ornamental crop gerbera: intraspecific variation in host plant and herbivore

Life-history traits of the Kanzawa spider mite Tetranychus kanzawai (Acari: Tetranychidae).

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