1. Effects of host switching on gypsy moth (Lymantria dispar (L.)) under field conditions

   • J. L. Stoyenoff
   • J. A. Witter
   • C. A. Chilcote

   Original Paper Pages: 143 - 157

2. Nutritional indices in the gypsy moth (Lymantria dispar (L.)) under field conditions and host switching situations

   • J. L. Stoyenoff
   • J. A. Witter
   • M. E. Montgomery

   Original Paper Pages: 158 - 170

3. Effects of plant size and water relations on gas exchange and growth of the desert shrub Larrea tridentata

   • A. C. Franco
   • A. G. de Soyza
   • W. G. Whitford

   Original Paper Pages: 171 - 178

4. Geographic variation in embryonic development time and stage of diapause in a grasshopper

   • Hugh Dingle
   • Timothy A. Mousseau

   Original Paper Pages: 179 - 185

5. Diversity of ant-plant interactions: protective efficacy in Macaranga species with different degrees of ant association

   • Brigitte Fiala
   • Harald Grunsky
   • K. Eduard Linsenmair

   Original Paper Pages: 186 - 192

6. Leaf and canopy photosynthetic CO₂ uptake of a stand of Echinochloa polystachya on the Central Amazon floodplain

   • M. T. F. Piedade
   • S. P. Long
   • W. J. Junk

   Original Paper Pages: 193 - 201

7. Territory defense by the ant Azteca trigona: maintenance of an arboreal ant mosaic

   • Eldridge S. Adams

   Original Paper Pages: 202 - 208

8. Does feeding effort of Tengmalm's owls reflect offspring survival prospects in cyclic food conditions?

   • Harri Hakkarainen
   • Erkki Korpimäki

   Original Paper Pages: 209 - 214

9. Aphid-ant interaction reduces chrysomelid herbivory in a cottonwood hybrid zone

   • Kevin D. Floate
   • Thomas G. Whitham

   Original Paper Pages: 215 - 221

10. Thermoregulation in three species of Afrotropical subterranean mole-rats (Rodentia: Bathyergidae) from Zambia and Angola and scaling within the genus Cryptomys

    • N. C. Bennett
    • G. H. Aguilar
    • C. G. Faulkes

    Original Paper Pages: 222 - 227

11. Interspecific comparisons of relative assimilation efficiencies for zinc and cadmium in an ecological series of talitrid amphipods (Crustacea)

    • Jason M. Weeks
    • Philip S. Rainbow

    Original Paper Pages: 228 - 235

12. Distribution patterns and microhabitat segregation in gastrointestinal helminths of Sorex shrews

    • Voitto Haukisalmi
    • Heikki Henttonen

    Original Paper Pages: 236 - 242

13. Primary function for a chemical defense? Nicotine does not protect Datura stramonium L from UV damage

    • Ian T. Baldwin
    • Sowan Huh

    Original Paper Pages: 243 - 247

14. The relationship between population size, amount of brood, and individual foraging behaviour in the honey bee, Apis mellifera L.

    • C. D. Eckert
    • M. L. Winston
    • R. C. Ydenberg

    Original Paper Pages: 248 - 255

15. Preferential outcrossing in the complex species Persoonia mollis R. Br. (Proteaceae)

    • Siegfried L. Krauss

    Original Paper Pages: 256 - 264

16. Large African herbivores, bruchid beetles and their interactions with Acacia seeds

    • Maxine F. Miller

    Original Paper Pages: 265 - 270

17. Response of a leaf beetle to two food plants, only one of which provides a sequestrable defensive chemical

    • Susanne Dobler
    • Martine Rowell-Rahier

    Original Paper Pages: 271 - 277

18. The costs of crest induction for Daphnia carinata

    • Michael J. Barry

    Original Paper Pages: 278 - 288