The reproductive strategy of the gregarious parasitoid, Pteromalus puparum (Hymenoptera: Pteromalidae) M. Takagi Original Papers Pages: 321 - 324
Interspecific competition between introduced house finch populations and two associated passerine species J. T. Wootton Original Papers Pages: 325 - 331
Cold resistance and overwintering survival of the cabbage root fly, Delia radicum (Anthomyiidae), and its parasitoid, Trybliographa rapae (Cynipidae), in England W. BlockW. J. TurnockT. H. Jones Original Papers Pages: 332 - 338
Population differences in the timing of diapause: a test of hypotheses N. G. Hairston Jr.E. J. Olds Original Papers Pages: 339 - 344
Aspects of the reproductive ecology of four australian Hakea species (Proteaceae) in South Africa D. M. RichardsonB. W. Van WilgenD. T. Mitchell Original Papers Pages: 345 - 354
The photosynthetic characteristics of papyrus in a tropical swamp M. B. Jones Original Papers Pages: 355 - 359
Net photosynthetic recovery in subarctic lichens with contrasting water relations M. GroulxM. J. Lechowicz Original Papers Pages: 360 - 368
Field water relations of a wet-tropical forest tree species, Pentaclethra macroloba (Mimosaceae) S. F. OberbauerB. R. StrainG. H. Riechers Original Papers Pages: 369 - 374
Sensitivity to larval density in populations of Drosophila mojavensis: Influences of host plant variation on components of fitness W. J. EtgesW. B. Heed Original Papers Pages: 375 - 381
Influence of watering and trenching ponderosa pine on a pine sawfly D. G. McCulloughM. R. Wagner Original Papers Pages: 382 - 387
Diet spectra and resource partitioning in the larvae and juveniles of three species and six cohorts of cyprinids from a subalpine lake W. MarkR. HoferW. Wieser Original Papers Pages: 388 - 396
Feeding of tropical freshwater fishes: seasonality in resource availability and resource use A. PrejsK. Prejs Original Papers Pages: 397 - 404
Leaves as islands for microbes L. L. KinkelJ. H. AndrewsE. V. Nordheim Original Papers Pages: 405 - 408
Resources limit the fecundity of three woodland herbs C. McCallR. B. Primack Original Papers Pages: 431 - 435
Increased thorn length in Acacia depranolobium —an induced response to browsing T. P. Young Original Papers Pages: 436 - 438
Optimal foraging and intraspecific diet differences in the lizard Cnemidophorus sexlineatus M. A. Paulissen Original Papers Pages: 439 - 446
Intraspecific interference among larvae in a semivoltine dragonfly population P. H. CrowleyP. M. DillonC. N. Watson Original Papers Pages: 447 - 456
Barriers to movement and the response of herbivores to alternative cropping patterns J. BergelsonP. Kareiva Original Papers Pages: 457 - 460
A comparative analysis of food-niche relationships and trophic guild structure in two assemblages of vertebrate predators differing in species richness: causes, correlations, and consequences F. M. JaksićM. Delibes Original Papers Pages: 461 - 472
Variation in home range size along an elevational gradient in the iguanid lizard Sceloporus merriami D. E. RubyA. E. Dunham Original Papers Pages: 473 - 480