, Volume 93, Issue 2, pp 263–267 | Cite as

Testing hypotheses of adaptive variation in cricket ovipositor lengths

  • Michael J. Bradford
  • Paul A. Guerette
  • Derek A. Roff
Original Papers


We experimentally tested a series of hypotheses proposed by Masaki (1979, 1986) for the evolution of ovipositor length in crickets. Female crickets use the ovipositor to bury eggs in the soil, where it was hypothesized to protect their eggs from desiccation, cold and other disturbance. However, we found no effect of depth on the overwinter survival of eggs of three species of Nemobiinae. The probability of hatchlings reaching the soil surface was negatively correlated with depth documenting a significant cost to females laying eggs deep in the soil. Hatchling survival may be an important agent of selection on ovipositor length in habitats of different soil moistures. Hatchling survival in the soil was also correlated with body size, which may impose a constraint on egg-size fecundity trade-offs. Females of a bivoltine population of Allonemobius socius lay eggs at shallower depths when reared under summer compared to fall conditions and, therefore, may be able to respond to selection through behavioral plasticity when morphological adaptation is constrained by allometry.

Key words

Crickets Ovipositor length Egg survival Ovipositioning behaviour 


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  1. Berrigan D (1991) The allometry of egg size and number in insects. Oikos 60:313–321Google Scholar
  2. Bradford MJ, Roff DA (1992) Bet-hedging and developmental plasticity in the diapause strategies of the cricket Allonemobius fasciatus. Ecology (in press)Google Scholar
  3. Howard DJ, Harrison RG (1984) Habitat segregation in ground crickets: experimental studies of adult survival, reproductive success, and oviposition preference. Ecology 65:61–68Google Scholar
  4. Masaki S (1979) Climatic adaptation and species status in the lawn ground cricket. III. Ovipositor length. Oecologia 43:207–219Google Scholar
  5. Masaki S (1986) Significance of ovipositor length in life cycle adaptations of crickets. In: Taylor F, Karbin R (eds) Insect life cycles. Springer, Berlin, pp 20–34Google Scholar
  6. Mousseau TA (1988) Life history evolution in a seasonal environment: a case study. Ph.D. Thesis, McGill University, MontrealGoogle Scholar
  7. Mousseau TA, Roff DA (1989) Adaptation to seasonality in a cricket: patterns of phenotypic and genotypic variation in body size and diapause expression along a cline in season length. Evolution 43:1483–1496Google Scholar
  8. NOAA (1989) Monthly climatic data for the world. National Climatic Data Center, Asheville NCGoogle Scholar
  9. Roff DA (1986) The genetic basis of wing dimorphism in the sand cricket Gryllus firmus and its relevance to the evolution of wing dimorphism in insects. Heredity 57:221–231Google Scholar
  10. SAS Inst. (1988) SAS/STAT User's guide, version 6.03. SAS Inst. Inc., Cary NCGoogle Scholar
  11. Shul'gin AM (1957) The temperature regime of soils. Translated in 1965 by the Israel program for scientific translations, JerusalemGoogle Scholar
  12. Wardhaugh KG (1977) The effects of temperature and photoperiod on the morphology of the egg-pod of the Australian plague locust (Chortoicetes terminifera Walker, Orthoptera: Acrididae). Aust J Ecol 2:81–88Google Scholar
  13. Vickery VR, Johnstone DE (1973) The Nemobiinae (Orthoptera: Gryllidae) of Canada. Can Ent 105:623–645Google Scholar

Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • Michael J. Bradford
    • 1
  • Paul A. Guerette
    • 1
  • Derek A. Roff
    • 1
  1. 1.Department of BiologyMcGill UniversityMontrealCanada

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