Diapause induction in the thrips predatorAmblyseius cucumeris [Acarina: phytoseiidae] under greenhouse conditions
Tóm tắt
The predatory miteAmblyseius cucumeris (Oudemans) is an important biological control agent for thrips in commercial greenhouses, but its effectiveness in fall and winter is limited by reproductive diapause induced under short day conditions. Influence of photoperiod and temperature on diapause induction was investigated to provide information for successful management of the predator. Under 8∶16 (L∶D) photoperiods and 22°C photophase temperatures, diapause incidence was inversely related to scotophase temperature, decreasing from 100% diapause at 15°C to no diapause at 21°C. In continuous darkness, diapause was induced by thermoperiods of 20∶10 and 22∶17 and 22∶17 but not 25∶15°C (T∶C) (8h thermophase). Critical daylength for inducing diapause under 22∶17°C (T∶C) was 12.45 h, which was consistent with the trend in diapause incidence in mites collected from an established greenhouse population September to November. MostA. cucumeris diapaused only when exposed to diapause inducing conditions throughout their juvenile development and none stopped laying eggs when transferred from nondiapause to diapause inducing conditions as adults. After 14 generations of genetic selection for a nondiapause strain, diapause incidence was 33.3%.
Tài liệu tham khảo
Croft, B. A. — 1971. Comparative studies on four strains ofTyphlodromus occidentalis (Acarina, Phytoseiidae): V. Photoperiodic induction of diapause. —Ann. Entomol. Soc. Am., 64, 962–964.
Danks, H. V. — 1987. Insect Dormancy: An Ecological Perspective. —Biological Survey of Canada Monograph series No. 1.
Field, R. P. &Hoy, M. A. — 1986. Evaluation of genetically improved strains ofMetaseiulus occidentali (Nesbitt) [Acarina: Phytoseiidae] for integrated control of spider mites on roses in greenhouses. —Hilgardia, 54, 1–32.
Hoy, M. A. — 1975a. Effect of temperature and photoperiod on the induction of diapause in the miteMetaseiulus occidentalis. —J. Insect Physiol., 21, 605–611.
Hoy, M. A. — 1975b. Diapause in the miteMetaseiulus occidentalis: Stages sensitive to photoperiodic induction. —J. Insect Physiol., 21, 745–751.
Hoy, M. A. — 1984. Genetic improvement of a biological control agent: Multiple pesticide resistance and nondiapause inMetaseiulus occidentalis (Nesbitt). —Proc. VI Intern. Congr. Acarol., 2, 673–679.
Messing, R. H. & Croft, B. A. — Biosystematics ofAmblyseius andersoni (Chant) andA. potentillae (Garman) [Acarina: Phytoseiidae]: Implications for biological control. —Exp. Appl. Acarol., (in press).
Overmeer, W. P. J. — 1985. Diapause. In: Spider Mites: Their Biology, Natural Enemies and Control, vol. 1B (W. Helle &M. W. Sabelis, eds.). —Elsevier, Amsterdam, 95–102.
Overmeer, W. P. J. &van Zon, A. Q. — 1983. The effect of different kinds of food on the induction of diapause in the predacious miteAmblyseius potentillae —Entomol. Exp. Appl., 33, 27–30.
Overmeer, W. P. J., Nelis, H. J. C. F., De Leenheer, A. P., Calis, J. N. M. &Veerman, A. — 1989. Effect of diet on the photoperiodic induction of diapause in three species of predatory mite,Amblyseius potentillae, A. cucumeris andTyphlodromus pyri. —Exp. Appl. Acarol., 7, 281–287.
Putman, W. L. — 1962. Life-history and behaviour of the predaceous miteTyphlodromus (T.) caudiglands Schuster [Acarina, Phytoseiidae] in Ontario, with notes on the prey of related species. —Can. Entomol., 94, 163–177.
Ramakers, P. M. J. — 1987. Thrips. In: Annual Report 1987. —Glasshouse crops research station, Naaldwijk, p. 87.
Ramakers, P. M. J. — 1988. Population dynamics of the thrips predatorsAmblyseius mckenziei andAmblyseius cucumeris, [Acarina, Phytoseiidae] on sweet pepper. —Neth. J. Agric. Sci., 36, 247–252.
Ramakers, P. M. J. &van Lieburg, M. J. — 1982. Start of commercial production and introduction ofAmblyseius mckenziei Sch. & Pr. [Acarina, Phytoseiidae] for the control ofThrips tabaci Lind. [Thysanoptera, Thripidae] in glasshouses. —Meded. Fac. Landbouwwet. Rijksuniv. Gent. 47, 541–545.
Rock, G. C., Yeargen, D. R. &Rabb, R. L. — 1971. Diapause in the phytoseiid mite,Neoseiulus (T.) fallacis. —J. Insect Physiol., 17, 1651–1659.
Schulten, G. G. M. — 1985. Mating. In: Spider Mites: Their Biology, Natural Enemies and Control, vol. 1B (W. Helle &M. W. Sabelis, eds.). —Elsevier Amsterdam, 55–65.
Steiner, M. Y. &Elliott, D. P. — 1987. Biological Pest Management for Interior Plantscapes, 2nd ed. —Alberta Environmental Centre, Vegreville, AB. AECV87-El.
Swift, F. C. — 1987. Diapause induction inAmblyseius fallacis [Acari, Phytoseiidae]. —Environ. Entomol., 16, 72–76.
Tauber, M. J. &Tauber, C. A. — 1970. Photoperiodic induction and termination of diapause in an insect: response to changing day lengths. —Science (Wash., D.C.) 167, 170.
Van Houten, Y. M. — 1989. Photoperiodic control of adult diapause in the predacious mite,Amblyseius potentillae: Repeated diapause induction and termination. —Physiol. Entomol., 14, 341–348.
Van Houten, Y. M., Overmeer, W. P. J., van Zon, A. Q. &Veerman, A. — 1988. Thermoperiodic induction of diapause in the predacious mite,Amblyseius potentillae. —J. Insect Physiol., 34, 285–290.
Veerman, A., Overmeer, W. P. J., van Zon, A. Q., de Boer, J. M., de Waard, E. R. &Huisman, H. O. — 1983. Vitamin A is essential for photoperiodic induction of diapause in an eyeless mite. —Nature (Lond.), 302, 248–249.
Zar, J. H. — 1984. Biostatistical Analysis, 2nd ed. —Prentice-Hall, Englewood Cliffs, NJ.