Eur. J. Entomol. 101 (3): 427-430, 2004 | DOI: 10.14411/eje.2004.060

Diapause development in Aquarius paludum (Heteroptera: Gerridae)

Tetsuo HARADA1, Ken ITO1, Magdalena HODKOVA2, Ivo HODEK2
1 Laboratory of Environmental Physiology, Faculty of Education, Kochi University, Kochi 780, Japan
2 Institute of Entomology, Academy of Sciences, 375 00 Ceske Budejovice, Czech Republic; e-mail: hodkova@entu.cas.cz

Diapause fixation and development were studied in females of a Czech population of Aquarius paludum by monitoring changes in oxygen uptake, weight and reproduction potential in field adults between August and February. The fall in oxygen uptake related to fresh weight (from > 1000 µl O2 per g per h to around 500 µl O2 per g per h) in field adults during early diapause was similar in two age cohorts, although the time of adult ecdysis differed by 50 days and thus occurred at markedly different temperatures and photoperiods of late August vs. early October. The different conditions affected the weight of females and thus also the absolute value of oxygen consumption: both parameters were much lower in the October females. The seasonal time of diapause termination in A. paludum did not differ from findings in other cold temperate insects: diapause and the photoperiodic response ended in the winter, as was shown by the possibility of insects' reactivation by 26°C in spite of a diapause promoting daylength of 12L : 12D. In most females (78.6%) ovaries matured after transfer to these conditions in mid-February, while ovarian maturation occurred in only 16.7% of females transferred in early January and no ovarian maturation was observed in females transferred in early December. Ovarian maturation was preceded by a transient increase in oxygen consumption from 600 µl O2 per g per h to 1400 µl O2 per g per h.

Keywords: Aquarius paludum, Gerridae, water striders, diapause induction, diapause development, reactivation, oxygen uptake, ovarian maturation

Received: April 11, 2003; Revised: December 15, 2003; Accepted: April 26, 2004; Published: September 20, 2004  Show citation

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HARADA, T., ITO, K., HODKOVA, M., & HODEK, I. (2004). Diapause development in Aquarius paludum (Heteroptera: Gerridae). EJE, 101(3), 427-430. doi: 10.14411/eje.2004.060
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    References

    1. Blanckenhorn W.U. 1994: Fitness consequences of alternative life-histories in water-striders, Aquarius remigis (Heteroptera, Gerridae). Oecologia 97: 354-365 Go to original source...
    2. Blanckenhorn W.U. & Fairbairn D.J. 1995: Life-history adaptation along latitudinal cline in the water-strider Aquarius remigis (Heteroptera, Gerridae). J. Evol. Biol. 8: 21-41 Go to original source...
    3. Conradi-Larsen E.-M. & Somme L. 1978: The effect of photoperiod and temperature on imaginal diapause in Dolycoris baccarum from southern Norway. J. Insect Physiol. 24: 243-249 Go to original source...
    4. Danks H.V. 1987: Insect Dormancy: an Ecological Perspective. Biological Survey of Canada, Ottawa, 439 pp
    5. Harada T. 1991: Effects of photoperiod and temperature on phototaxis in a water strider, Gerris paludum insularis (Motschulsky). J. Insect Physiol. 37: 27-34 Go to original source...
    6. Harada T. 1994: Adult diapause induced by the loss of water surface in the water-strider, Aquarius paludum (Fabricius). Zool. Sci. 11: 855-857
    7. Harada T. 1998: To fly or not to fly: response of water striders to drying out of habitat. Ecol. Entomol. 23: 370-376 Go to original source...
    8. Harada T. & Spence J.R. 2000: Nymphal density and life histories of two water striders (Hemiptera: Gerridae). Can. Entomol. 132: 353-363 Go to original source...
    9. Harada T. & Taneda K. 1989: Seasonal changes in alary dimorphism of a water strider, Gerris paludum insularis (Motschulsky). J. Insect Physiol. 35: 919-924 Go to original source...
    10. Harada T. & Taniguchi Y. 2001: Adult diapause of a monovoltine water strider, Gerris gracilicornis (Heteroptera: Gerromorpha). Acta Soc. Zool. Boh. 65: 181-187
    11. Harada T., Inoue T., Ono I., Kawamura N., Kishi M., Doi K., Inoue S. & Hodkova M. 2000: Endocrine, ecophysiological and ecological aspects of seasonal adaptations in a water strider, Aquarius paludum (A minireview). Entomol. Sci. 3: 157-165
    12. Hodek I. 1971: Termination of adult diapause in Pyrrhocoris apterus (Heteroptera: Pyrrhocoridae) in the field. Entomol. Exp. Appl. 14: 212-222 Go to original source...
    13. Hodek I. 1979: Intermittent character of adult diapause in Aelia acuminata (Heteroptera). J. Insect Physiol. 25: 867-871 Go to original source...
    14. Hodek I. 1983: Role of environmental factors and endogenous mechanisms in the seasonality of reproduction in insects diapausing as adults. In Brown V.K. & Hodek. I. (eds): Diapause and Life Cycle Strategies in Insects. Junk, The Hague, pp. 9-33
    15. Hodek I. & Hodkova M. 1981: Relationship between respiratory rate and diapause intensity in adults of two Heteropteran species. Vest. Cs. Spol. Zool. 45: 27-34
    16. Inoue T. & Harada T. 1997: Sensitive stages in the photoperiodic determination of wing forms and reproduction in the water strider, Aquarius paludum (Fabricius). Zool. Sci. 14: 21-27 Go to original source...
    17. Precht H., Christophersen J., Hensel H. & Larcher W. 1973: Temperature and Life. Springer, New York, 779 pp Go to original source...
    18. Slama K. 1960: Oxygen consumption during the postembryonic development of Pyrrhocoris apterus (Heterometabola: Heteroptera), and its comparison with that of holometabola. Ann. Entomol. Soc. Am. 53: 606-610 Go to original source...
    19. Tauber M.J., Tauber C.A. & Masaki S. 1986: Seasonal Adaptations of Insects. Oxford Univ. Press, New York, Oxford, 411 pp

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