Summary
Nectar foraging preferences of Colias butterflies in two different mountain ecosystems are examined with respect to plant distribution, nectar quantity, carbohydrate (and amino acid) content of nectar, and visual pattern of the plants utilized and avoided. Colias, and apparently numerous other small, ectothermic, low-energy-demand pollinators, “patronize” plants producing relatively dilute nectars containing a high proportion of monosaccharide sugars and significant amounts of polar, nitrogen-rich amino acids. These plants also converge on a common “target” flower pattern in ultraviolet and human-visible light. High-energy demand, endothermic pollinators, by contrast, appear to require higher concentration nectars and/or higher proportions of di- and oligosaccharide sugars. These results are discussed in the light of water balance and energy budget demands of different pollinator classes. Questions are also raised concerning behavioral aspects of pollinator search for resources and the pertinence of these data to the concept of floral mimicry.
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References
Baker, H. G., Baker, I.: Amino-acids in nectar and their evolutionary significance. Nature (Lond.) 241, 543–545 (1973)
Barrell, J.: Flora of the Gunnison Basin: Gunnison, Saguache, and Hinsdale Counties, Colorado, 494 pp. Rockford, Illinois: Natural Land Institute 1969
Block, R. J., Durrum, E. L., Zweig, G.: A manual of paper chromatography and paper electrophoresis, 710 pp. New York: Academic Press 1958
Daumer, K.: Blumenfarben, wie sie die Bienen sehen. Z. vergl. Physiol. 41, 51–110 (1958)
Dixon, M., Webb, E. C.: Enzymes, 2nd ed., 950 pp. New York: Academic Press 1964
Eisner, T., Silbergleid, R. E., Aneshansley, D., Carrel, J. E., Howland, H. C.: Ultraviolet video-viewing: the television camera as an insect eye. Science 166, 1172–1174 (1969)
Free, J. B.: Dandelion as a competitor to fruit trees for bee visits. J. appl. Ecol. 5, 169–178 (1968)
Gilbert, L. E.: Pollen feeding and reproductive biology of Heliconius butterflies. Proc. nat. Acad. Sci. (Wash.) 69, 1403–1407 (1972)
Harrington, H. D.: Manual of the plants of Colorado, 2nd ed., 666 pp. Chicago, Ill.: Sage Books 1964
Heinrich, B.: Energetics of temperature regulation and foraging in a bumblebee, Bombus terricola Kirby. J. comp. Physiol. 77, 49–64 (1972)
Heinrich, B., Raven, P. H.: Energetics and pollination ecology. Science 176, 597–602 (1972)
Langenheim, J. H.: Vegetation and environmental patterns in the Crested Butte Area, Gunnison County, Colorado. Ecol. Mon. 32, 249–285 (1962)
Levin, D. A., Anderson, W. W.: Competition for pollinators between simultaneously flowering species. Amer. Nat. 104, 455–467 (1970)
Macior, L. W.: Coevolution of plants and animals-systematic insights from plantinsect interactions. Taxon 20, 17–28 (1971)
Mokrasch, L. C.: Analysis of hexose phosphates and sugar mixtures with the anthrone reagent. J. biol. Chem. 208, 55–59 (1954)
Mook, J. H., Mook, L. J., Heikens, H. S.: Further evidence for the role of “search images” in the hunting behavior of titmice. Arch. néerl. Zool. 13, 448–465 (1960)
Percival, M.: Types of nectar in angiosperms. New Phytol. 60, 235–281 (1961)
Pereival, M.: Floral biology, 243 pp. London: Pergamon Press 1965
Post, C. T., Jr., Goldsmith, T. H.: Physiological evidence for color receptors in the eye of a butterfly. Ann. Ent. Soc. Amer. 62, 1497–1498 (1969)
Rohlf, F. J., Sokal, R. R.: Statistical Tables, 253 pp. San Francisco, Ca.: Freeman 1969
Sherman, P. W., Watt, W. B.: The thermal ecology of some Colias butterfly larvae. J. comp. Physiol. 83, 25–40 (1973)
Silbergleid, R. E., Taylor, O. R., Jr.: Ultraviolet differences between the sulphur butterflies, Colias eurytheme and C. philodice, and a possible isolating mechanism. Nature (Lond.) 241, 406–408 (1973)
Sokal, R. R., Rohlf, F. J.: Biometry, 776 pp. San Francisco, Ca.: Freeman 1969
Stern, V. M., Smith, R. F.: Factors affecting egg production and oviposition in populations of Colias philodice eurytheme Boisduval. Hilgardia 29, 411–454 (1973)
Straw, R. M.: A Markov model for pollinator constancy and competition. Amer. Nat. 106, 597–620 (1972)
Watt, W. B.: Adaptive significance of pigment polymorphisms in Colias butterflies. I. Variation of melanin pigment in relation to thermoregulation. Evolution 22, 437–458 (1968)
Watt, W. B.: Adaptive significance of pigment polymorphisms in Colias butterflies. II. Thermoregulation and photoperiodically controlled melanin variation in Colias eurytheme. Proc. nat. Acad. Sci. (Wash.) 63, 767–774 (1969)
Watt, W. B.: Adaptive significance of pigment polymorphisms in Colias butterflies. III. Progress in the study of the “alba” variant. Evolution 27, 537–548 (1973)
Watt, W. B., Chew, F. S., Snyder, L. R. G., Watt, A. G., Rothchild, D. E.: Population structure of pierid butterflies. I. Densities and movements of three montane Colias species. In preparation.
Wigglesworth, V. B.: The principles of insect physiology, 7th ed., 827 pp. London, England: Chapman and Hall 1972
Wykes, G. R.: An investigation of the sugars present in the nectar of flowers of various species. New Phytol. 51, 210–215 (1952)
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Watt, W.B., Hoch, P.C. & Mills, S.G. Nectar resource use by Colias butterflies. Oecologia 14, 353–374 (1974). https://doi.org/10.1007/BF00384578
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DOI: https://doi.org/10.1007/BF00384578