Behavioral Ecology and Sociobiology

, Volume 22, Issue 6, pp 401–408 | Cite as

Energetic and time costs of foraging in harvester ants, Pogonomyrmex occidentalis

  • Jennifer H. Fewell
Article

Summary

Western harvester ants, Pogonomyrmex occidentalis, preferentially utilize low vegetational cover pathways. Energetic costs for foraging ants were less than 0.1% of caloric rewards of harvested seeds, suggesting that reduction of energetic cost is not a major benefit of this preference. Walking speed was significantly faster on lower cover routes, increasing net return rates from equidistant artificial food sources. Undisturbed foragers on low cover routes traveled farther, increasing their total foraging area without increasing foraging time. These results suggest that in animals with low costs of locomotion relative to energetic rewards, time costs are more important than direct energetic costs in influencing foraging decisions. In baited experiments with equidistant food sources, preferential use of low cover routes resulted in a large increase in net energetic gain rate, but only a slight increase in energetic efficiency. Under natural conditions, net energetic gain rates were constant for foragers using low and high vegetational cover routes, but foragers using low cover paths had lower efficiencies. This suggests that net energetic gain rate is a more important currency than energetic efficiency for foraging harvester ants.

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References

  1. Bernstein RA (1982) Foraging-area size and food density: Some predictive models. Theor Pop Biol 22:309–323Google Scholar
  2. Cosens D, Toussaint N (1985) An experimental study of the foraging strategy of the wood ant Formica aquilonia. Anim Behav 33:541–552Google Scholar
  3. Davidson DW (1977) Species diversity and community organization in desert seed-eating ants. Ecology 58:711–724Google Scholar
  4. Davidson DW (1978) Experimental tests of the optimal diet in two social insects. Behav Ecol Sociobiol 4:35–41Google Scholar
  5. DeVita J (1979) Mechanisms of interference and foraging among colonies of the harvester ant Pogonomyrmex californicus in the Mojave desert. Ecology 60:729–731Google Scholar
  6. Fewell JH (1988) Variation in the foraging patterns of the ant, Pogonomyrmex occidentalis in relation to variation in habitat structure. In: Jeanne RL (ed) Inter-individual variation in social insect behavior. Westview Press, Boulder, ColoradoGoogle Scholar
  7. Gendron RP, Staddon JER (1983) Searching for cryptic prey: The effect of search rate. Am Nat 121:172–186Google Scholar
  8. Harrison JM (1986) Caste-specific changes in honeybee flight capacity. Physiol Zool 59:175–187Google Scholar
  9. Harrison JS, Gentry JM (1981) Foraging pattern, colony distribution and foraging range of the Florida harvester ant, Pogonomyrmex badius. Ecology 62:1467–1473Google Scholar
  10. Hebling Beraldo MJA, Mendes EG (1982) The influence of temperature on oxygen consumption rates of workers of two leaf cutting ants Atta laevigaata (F Smith 1858) and Atta sexdens ribripilosa (Forel 1908). Comp Biochem Physiol 71:419–424Google Scholar
  11. Heinrich B (1972) Energetics of temperature regulation and foraging in a bumblebee, Bombus terricola Kirby. J Comp Physiol 77:40–64Google Scholar
  12. Heinrich B (1975) Energetics of pollination. Ann Rev Ecol Syst 6:139–170Google Scholar
  13. Heinrich B (1979) Bumblebee economics. Harvard Univ Press Cambridge, MassGoogle Scholar
  14. Holder Bailey A, Polis GA (1987) Optimal and central-place foraging theory applied to a desert harvester ant, Pogonomyrmex californicus. Oecologia (Berl) 72:440–448Google Scholar
  15. Hölldobler B (1970) Steatoda fulva (Theridiidae), a spider that feeds on harvester ants. Psyche 77:202–208Google Scholar
  16. Hölldobler B (1974) Home range orientation and territoriality in harvesting ants, Pogonomyrmex. Proc Natl Acad Sci USA 71:3271–3277Google Scholar
  17. Hölldobler B (1976) Recruitment behavior, home range orientation and territoriality in harvester ants, Pogonomyrmex. Behav Ecol Sociobiol 1:3–44Google Scholar
  18. Hölldobler B, Lumsden CJ (1980) Territorial strategies in ants. Science 210:732–739Google Scholar
  19. Jensen TF, Holm-Jensen I (1980) Energetic cost of running in workers of three ant species, Formica fusca L, Formica rufa L, and Camponotus herculeanus L (Hymenoptera, Formicidae). J Comp Physiol 137:151–156Google Scholar
  20. Jensen TF, Nielsen MG (1975) The influence of body size and temperature on worker ant respiration. Nat Jutlandica 18:21–25Google Scholar
  21. Kelrick MI, MacMahon JA (1985) Nutritional and physical attributes of seeds of some common sagebrush-steppe plants: Some implications for ecological theory and management. J Range Manage 38:65–69Google Scholar
  22. Kelrick MI, MacMahon JA, Parmenter RR, Sisson DV (1986) Native seed preferences of shrub-steppe rodents, birds and ants: The relationships of seed attributes and seed use. Oecologia (Berl) 68:327–337Google Scholar
  23. Kendeigh SC, West GC (1965) Caloric values of plant seeds eaten by birds. Ecology 46:553–555Google Scholar
  24. Lighton JRB, Bartholomew GA, Feener DH (1987) Energetics of locomotion and a model of the energy cost of foraging in the leaf-cutting ant Atta colombica Guer. Physiol Zool 60:524–537Google Scholar
  25. Neilsen MG (1986) Respiratory rates of ants from different climatic areas. J Insect Physiol 32:125–131Google Scholar
  26. Neilsen MG, Jensen TF, Holm-Jensen I (1982) Effect of load carriage on the respiratory metabolism of running worker ants of Camponotus herculeanus (Formicidae). Oikos 39:137–142Google Scholar
  27. Pleasants JM (1981) Bumblebee response to variation in nectar availability. Ecology 62:1648–1661Google Scholar
  28. Porter SD, Jorgensen CD (1981) Foragers of the harvester ant, Pogonomyrmex owyheei: A disposable caste? Behav Ecol Sobiobiol 9:247–256Google Scholar
  29. Pyke GH (1978) Optimal foraging in bumblebees and coevolution with their plants. Oecologia (Berl) 36:281–293Google Scholar
  30. Pyke GH (1980) Optimal foraging in bumblees: Calculation of net rate of energy intake and optimal patch choice. Theor Popul Biol 17:232–246Google Scholar
  31. Pyke GH (1981) Optimal travel speeds of animals. Am Nat 118:475–487Google Scholar
  32. Pyke GH (1984) Optimal foraging theory: A critical review. Ann Rev Ecol Syst 15:523–575Google Scholar
  33. Pyke GH, Pulliam HR, Charnov EL (1977) Optimal foraging: A selective review of theory and tests. Quart Rev Biol 52:137–154Google Scholar
  34. Rissing SW (1981) Prey preferences in the desert horned lizard: influence of prey foraging method and aggressive behavior. Ecology 62:1031–1040Google Scholar
  35. Rissing SW, Pollack GB (1984) Worker size variability and foraging efficiency in Veromessor pergandei (Hymenoptera: Formicidae). Behav Ecol Sociobiol 15:121–126Google Scholar
  36. Schmid-Hempel P, Kacelnik A, Houston AI (1985) Honeybees maximize efficiency by not filling their crop. Behav Ecol Sociobiol 17:61–66Google Scholar
  37. Stephens D, Krebs J (1986) Foraging theory. Princeton Univ Press, Princeton, NJGoogle Scholar
  38. Taylor CR (1972) Running up and down hills: Some consequences of size. Science 178:1096–1097Google Scholar
  39. Taylor F (1977) Foraging behavior of ants: Experiments with two species of Myrmecine ants. Behav Ecol Sociobiol 2:147–167Google Scholar
  40. Traniello JFA (1977) Recruitment behavior, orientation, and the organization of foraging in the carpenter ant Camponotus pennsylvanicus DeGeer (Hymenoptera: Formicidae). Behav Ecol Sociobiol 2:65–68Google Scholar
  41. Traniello JFA, Fujita MS, Bowen RV (1984) Ant foraging behavior: Ambient temperature influences prey selection. Behav Ecol Sociobiol 15:65–68Google Scholar
  42. Vleck D (1978) The energetics of activity and growth: the energy cost of burrowing by pocket gophers and energy metabolism during growth and hatching of emu rhea and ostrich eggs. Ph D Dissertation, Univ Calif, Los AngelesGoogle Scholar
  43. Waddington KD, Holden LR (1979) Optimal foraging: On flower selection by bees. Am Nat 114:179–196Google Scholar
  44. Whitford WG (1978) Foraging in seed-harvester ants Pogonomyrmex spp. Ecology 59:185–189Google Scholar
  45. Whitford WG, Bryant M (1979) Behavior of a predator and its prey: The horned lizard (Phrynosoma cornutum) and harvester ants (Pogonomyrmex spp). Ecology 60:686–694Google Scholar

Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • Jennifer H. Fewell
    • 1
  1. 1.Department EPO BiologyUniversity of ColoradoBoulderUSA

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