Eur. J. Entomol. 103 (4): 733-742, 2006 | DOI: 10.14411/eje.2006.097

Diapause completion in the almond seed wasp, Eurytoma amygdali (Hymenoptera: Eurytomidae) following early low temperature treatment

John T. MARGARITOPOULOS1, Minos E. TZANAKAKIS*,2
1 Laboratory of Entomology and Agricultural Zoology, Department of Agriculture, Crop Production and Rural Environment, University of Thessaly, Fytokou Street, 384 46 Nea Ionia, Magnesia, Greece; e-mail: jmarg@uth.gr
2 Aristotle University of Thessaloniki, 540 06 Thessaloniki, Greece

Fruit of two almond, Prunus amygdalus Linnaeus, cultivars (Retsou and Truoito) containing diapausing larvae of Eurytoma amygdali Enderlein, were collected in early August from coastal areas in northern Greece. Some larvae were removed from the fruit and maintained singly in open plastic vials and others left in the fruit until the end of the low-temperature period. They were kept at a low temperature of 10°C from the beginning, or after 8 weeks at 20°C. The larvae were subsequently maintained at 20°C and whether they completed the two diapause stages was recorded for 60 more weeks. When the larvae in vials, were kept initially for 8 weeks at 20°C, most of those from Retsou and all of those Truoito almonds completed the first stage of diapause. Of the larvae in the fruits, most of those in Truoito but less than 50% of those in Retsou almonds completed the first stage of diapause after 8 weeks at 20°C. Larvae from different orchards and different almond cultivars differed in diapause intensity. When the larvae were kept at a low temperature of 10°C from the beginning for 4, 8 or 16 weeks and then at 20°C they completed the second diapause stage synchronously, but the time of completion was delayed, and depended on the duration of the low temperature treatment. In several cases the time to diapause completion was bimodally distributed and the relative size of peak depended on the duration of the early exposure to low temperature.

Keywords: Diapause development, diapause termination, insect dormancy, low temperatures, almonds, almond seed wasp, Eurytomidae

Received: October 25, 2005; Revised: May 10, 2006; Accepted: May 10, 2006; Published: October 2, 2006  Show citation

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MARGARITOPOULOS, J.T., & TZANAKAKIS, M.E. (2006). Diapause completion in the almond seed wasp, Eurytoma amygdali (Hymenoptera: Eurytomidae) following early low temperature treatment. EJE, 103(4), 733-742. doi: 10.14411/eje.2006.097
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    References

    1. BECK S.D. 1968: Insect Photoperiodism. Academic Press, New York & London, 288 pp
    2. BECK S.D. 1980: Insect Photoperiodism. 2nd ed. Academic Press, New York & London, 387 pp Go to original source...
    3. BRAUNE H.J. 1973: The role of temperature in controlling obligatory diapause. In Wieser W. (ed.): Effects of Temperature on Ectothermic Organisms. Springer, Berlin, Heidelberg, New York, pp. 233-238 Go to original source...
    4. BROWNING T.O. 1952: On the rate of completion of diapause development at constant temperatures in the eggs of Gryllulus commodus Walker. Aust. J. Sci. Res. (B, Biol. Sci.) 5: 344-353 Go to original source...
    5. DANILEVSKII A.S. 1965: Photoperiodism and Seasonal Development of Insects. Oliver & Boyd, Edinbourgh & London (English translation), 283 pp
    6. DANKS H.V. 1987: Insect Dormancy: An Ecological Perspective. Biological Survey of Canada (Terrestrial Arthropods), Monograph Series No. 1, Ottawa, 439 pp
    7. DANKS H.V. 1991: Life cycle pathways and the analysis of complex life cycles in insects. Can. Entomol. 123: 23-40 Go to original source...
    8. FUJIYAMA S. 1983: The larval diapause of three scarabaeid beetles and its function in their life cycles. In Brown V.K. & Hodek I. (eds): Diapause and Life Cycle Strategies in Insects. Dr. W. Junk, The Hague, Boston, London, pp. 55-66
    9. FUJIYAMA S. & TAKAHASHI F. 1973: Studies on the self-regulation of life cycle in Anomala cuprea Hope (Coleoptera: Scarabaeidae). 2. The effects of low temperature and photoperiod on the induction and termination of the larval diapause. Mem. Coll. Agric. Kyoto Univ. 104: 31-39
    10. HARALAMBIDIS C.G. & TZANAKAKIS M.E. 2000: Time of diapause termination in the pistachio seed wasp Eurytoma plotnikovi (Hymenoptera: Eurytomidae) in northern Greece and under certain photoperiods and temperatures. Entomol. Hellen. 13: 43-50 Go to original source...
    11. HODEK I. & HODKOVA M. 1988: Multiple role of temperature during insect diapause: a review. Entomol. Exp. Appl. 49: 153-165 Go to original source...
    12. HUSSEY N.W. 1955: The life histories of Megastigmus spermotrophus Wachtl (Hymenoptera: Chalcidoidea) and its principal parasite, with descriptions of the developmental stages. Trans. R. Entomol. Soc. London 106: 133-151 Go to original source...
    13. LEES A.D. 1955: The Physiology of Diapause in Arthropods. Cambridge University Press, London, 151 pp.
    14. PLAUT H.N. 1972: On the biology of the immature stages of the almond seed wasp, Eurytoma amygdali End. (Hym., Eurytomidae) in Israel. Bull. Entomol. Res. 61: 681-687 Go to original source...
    15. SAUNDERS D.S. 1982: Insect Clocks. 2nd. ed. Pergamon Press, Oxford, 409 pp
    16. SAWYER A.J., TAUBER M.J., TAUBER C.A. & RUBERSON J.R. 1993: Gypsy moth (Lepidoptera: Lymantriidae) egg development: a simulation analysis of laboratory and field data. Ecol. Model. 66: 121-155 Go to original source...
    17. TAUBER M.J. & TAUBER C.A. 1976: Insect seasonality: diapause maintenance, termination, and post diapause development. Annu. Rev. Entomol. 21: 81-107 Go to original source...
    18. TAUBER M.J., TAUBER C.A. & MASAKI S. 1986: Seasonal Adaptations of Insects. Oxford University Press, New York, Oxford, 411 pp
    19. TZANAKAKIS M.E. & VEERMAN A. 1994: Effect of temperature on the termination of diapause in the univoltine almond seed wasp Eurytoma amygdali. Entomol. Exp. Appl. 70: 27-39 Go to original source...
    20. TZANAKAKIS M.E., KARAKASSIS E.J., TSAKLIDIS G., KARABINA E.C., ARGALAVINI I.C. & ARABATZIS G. 1991: Diapause termination in the almond seed wasp, Eurytoma amygdali Enderlein (Hym., Eurytomidae), in northern Greece and under certain photoperiods and temperatures. J. Appl. Entomol. 111: 86-98 Go to original source...
    21. TZANAKAKIS M.E., VEENENDAAL R.L. & VEERMAN A. 1992: Effects of photoperiod and temperature on the termination of diapause in the univoltine seed wasp Eurytoma plotnikovi. Physiol. Entomol. 17: 176-182 Go to original source...
    22. VINOGRADOVA E.B. 1974: The pattern of reactivation of diapausing larvae in the blowfly, Calliphora vicina. J. Insect Physiol. 20: 2487-2496 Go to original source...
    23. WALDBAUER G.P. & STERNBURG J.G. 1986: The bimodal emergence curve of adult Hyalophora cecropia: Conditions required for the initiation of development by second mode pupae. Entomol. Exp. Appl. 41: 315-317 Go to original source...
    24. ZEROVA M.D. & FURSOV V.N. 1991: The palearctic species of Eurytoma (Hymenoptera: Eurytomidae) developing in stone fruits (Rosaceae: Prunoideae). Bull. Entomol. Res. 81: 209-219 Go to original source...

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