Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If you need an accessible version of this item please contact JSTOR User Support

Priority Effects and Species Coexistence: Experiments with Fungal-Breeding Drosophila

Bryan Shorrocks and Marc Bingley
Journal of Animal Ecology
Vol. 63, No. 4 (Oct., 1994), pp. 799-806
DOI: 10.2307/5257
Stable URL: http://www.jstor.org/stable/5257
Page Count: 8
  • Read Online (Free)
  • Download ($18.00)
  • Subscribe ($19.50)
  • Cite this Item
If you need an accessible version of this item please contact JSTOR User Support
Priority Effects and Species Coexistence: Experiments with Fungal-Breeding Drosophila
Preview not available

Abstract

1. Priority experiments were carried out using the fungal-breeding species Drosophila phalerata and D. subobscura and the mushroom Agaricus bispora forma albida. 2. Field experiments showed that an oviposition window exists for these species and that priority in increments of 1 day are suitable for laboratory experiments. 3. Priority (arriving first) had a clear effect upon three components of `fitness'. When a species arrived late it had lower survival, smaller size and longer developmental time. 4. A priority model [based upon the `aggregation model' of Atkinson & Shorrocks (1981)] showed that traditional priority (both species arrive on average together, but with a range of priorities) does not significantly contribute to coexistence. 5. When the average arrival time is moved so that more fugitive situations are modelled, then priority can have a marked effect upon coexistence. 6. Both `priority' and `fugitive' situations are dominated by realistic amounts of intraspecific aggregation. This has implications for metapopulation dynamics.

Page Thumbnails

  • Thumbnail: Page 
799
    799
  • Thumbnail: Page 
800
    800
  • Thumbnail: Page 
801
    801
  • Thumbnail: Page 
802
    802
  • Thumbnail: Page 
803
    803
  • Thumbnail: Page 
804
    804
  • Thumbnail: Page 
805
    805
  • Thumbnail: Page 
806
    806