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Oecologia

, Volume 80, Issue 2, pp 241–248 | Cite as

Pollinator abundance, morphology, and flower visitation rate: analysis of the “quantity” component in a plant-pollinator system

  • Carlos M. Herrera
Original Papers

Summary

Abundance and flower visitation rate of the pollinators of Lavandula latifolia (Labiatae), an insect-pollinated shrub, were studied over a 6-year period. The objective was to elucidate interspecific patterns in the “quantity” component of the plant-pollinator interaction. A total of 54 insect taxa are considered in the analyses, including hynenopterans, dipterans and lepidopterans. Most pollinators were comparatively scarce, with a few taxa acounting collectively for the majority of individuals. Pollinators differed broadly in flower visitation rate (0.2–30 flowers/min). Most of this variation was explained by differences in flower handling time (HT). Regardless of proboscis length, hymenopterans had intrinsically shorter handling times than lepidopterans. Within each group, HT decreased exponentially with increasing proboscis length. Abundance and visitation rate were uncorrelated across pollinator taxa. The total number of visits that each pollinator contributed to the plant (NFV) was estimated as the product of abundance x visitation rate. NFV values spanned four orders of magnirade. A small, taxonomically diverse group of species (1 moth, 1 butterfly, 4 bees) accounted for most visits and thus could effectively exert some selection on floral features. Nevertheless, the morphological diversity represented in this group of dominant pollinators probably constrains plant specialization, as they will most likely select for different floral features or in opposing directions on the same traits.

Key words

Foraging behavior Lavandula latifolia Mutualism Pollinator abundance Specialization 

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References

  1. Arnold RM (1982) Pollination, predation and seed set in Linaria vulgaris (Scrophulariaceae). Am Midl Nat 107:360–369Google Scholar
  2. Beattie AJ, Breedlove DE, Ehrlich PR (1973) The ecology of the pollinators and predators of Frasera speciosa. Ecology 54:81–91Google Scholar
  3. Böcher J, Phillipp M (1985) Aspects of the reproductive biology of Mimulus repens (Scrophulariaceae) at Lake Ellesmere, Canterbury, New Zealand. N Z J Bot 23:141–149Google Scholar
  4. Campbell DR (1985) Pollinator sharing and seed set of Stellaria pubera: competition for pollination. Ecology 66:544–553Google Scholar
  5. Devesa JA, Arroyo J, Herrera J (1985) Contribución al conocimiento de la biologia floral del género Lavandula. Anal Jard Bot Madrid 42:165–186Google Scholar
  6. Faegri K van der, Pijl L (1979) The Principles of Pollination Ecology. 3rd ed. Pergamon Press, OxfordGoogle Scholar
  7. Feinsinger P (1983) Coevolution and pollination. In: Futuyma DJ, Slatkin M (eds), Coevolution, Sinauer, Sunderland, MA, pp 282–310Google Scholar
  8. Grace J, Nelson M (1981) Insects and their pollen loads at a hybrid Heracleum site. New Phytol 87:413–423Google Scholar
  9. Harder LD (1982) Measurement and estimation of functional proboscis length in bumblebees (Hymenoptera: Apidae). Can J Zool 60:1073–1079Google Scholar
  10. Harder LD (1983) Flower handling efficiency of bumble bees: morphological aspects of probing time. Oecologia 57:274–280Google Scholar
  11. Harder LD (1985) Morphology as a predictor of flower choice by bumble bees. Ecology 66:198–210Google Scholar
  12. Harder LD (1986) Effects of nectar concentration and flower depth on flower handling efficiency of bumble bees. Oecologia 69:309–315Google Scholar
  13. Herrera CM (1985) Determinants of plant-animal coevolution: the case of mutualistic dispersal of seeds by vertebrates. Oikos 44:132–141Google Scholar
  14. Herrera CM (1987a) Components of pollinator “quality”: comparative analysis of a diverse insect assemblage. Oikos 50:79–90Google Scholar
  15. Herrera CM (1987b) Componentes del flujo génico en Lavandula latifolia Medicus: polinización y dispersión de semillas. Anal Jard Bot Madrid 44:49–61Google Scholar
  16. Herrera CM (1988) Variation in mutualisms: the spatio-temporal mosaic of a pollinator assemblage. Biol J Linn Soc 35:95–125Google Scholar
  17. Herrera CM, Jordano P (1981) Prunus mahaleb and birds: the high-efficiency seed dispersal system of a temperate fruiting tree. Ecol Monogr 51:203–218Google Scholar
  18. Herrera J (1984) Vegetación del Valle del Guadahornillos (Sierra de Cazorla, Jaén). Studia Oecol 5:77–96Google Scholar
  19. Hopper SD (1980) Pollination of the rain-forest tree Syzygium tierneyanum (Myrtaceae) at Kuranda, Northern Queensland. Aust J Bot 28:223–237Google Scholar
  20. Howe HF (1984) Constraints on the evolution of mutualisms. Am Nat 123:764–777Google Scholar
  21. Inouye DW (1980) The effect of proboscis and corolla tube lengths on patterns and rates of flower visitation by bumblebees. Oecologia 45:197–201Google Scholar
  22. Kempton RA, Taylor LR (1974) Log-series and log-normal parameters as diversity discriminants for the Lepidoptera. J Anim Ecol 43:381–399Google Scholar
  23. Kingsolver JG, Daniel TL (1979) On the mechanics and energetics of nectar feeding in butterflies. J Theor Biol 76:167–179Google Scholar
  24. May PG (1985) Nectar uptake rates and optimal nectar concentrations of two butterfly species. Oecologia 66:381–386Google Scholar
  25. May PG (1988) Determinants of foraging profitability in two nectarivorous butterflies. Ecol Entomol 13:171–184Google Scholar
  26. Miller RB (1978) The pollination ecology of Aquilegia elegantula and A. caerulea (Ranunculaceae) in Colorado. Am J Bot 65:406–414Google Scholar
  27. Montalvo AM, Ackerman JD (1986) Relative pollinator effectiveness and evolution of floral traits in Spatiphyllum friedrichsthalii (Araceae). Am J Bot 73:1665–1676Google Scholar
  28. Motten AF (1983) Reproduction of Erythronium umbilicatum (Liliaceae): pollination success and pollinator effectiveness. Oecologia 59:351–359Google Scholar
  29. Motten AF (1986) Pollination ecology of the spring wildflower community of a temperate deciduous forest. Ecol Monogor 56:21–42Google Scholar
  30. Motten AF, Campbell DR, Alexander DE, Miller HL (1981) Pollination effectiveness of specialist and generalist visitors to a North Carolina population of Claytonia virginica. Ecology 62:1278–1287Google Scholar
  31. Muñoz A, Devesa JA (1987) Contribución al conocimiento de la biología floral del género Lavandula L. II. Lavandula stoechas L., subsp. stoechas. Anal Jard Bot Madrid 44:63–78Google Scholar
  32. Nilsson LA (1978) Pollination ecology of Epipactis palustris (Orchidaceae). Bot Notiser 131:355–368Google Scholar
  33. Pellmyr O (1984) The pollination ecology of Actaea spicata (Ranunculaceae). Nord J Bot 4:443–456Google Scholar
  34. Pellmyr O (1985) The pollination biology of Actaea pachypoda and A. rubra (including A. erythrocarpa) in northern Michigan and Finland. Bull Torrey Bot Club 112:265–273Google Scholar
  35. Pivnick KA, McNeil JN (1985) Effects of nectar concentration on butterfly feeding: measured feeding rates for Thymelicus lineola (Lepidoptera: Hesperiidae) and a general feeding model for adult Lepidoptera. Oecologia 66:226–237Google Scholar
  36. Preston FW (1948) The commonness, and rarity, of species. Ecology 29:254–283Google Scholar
  37. Proctor M, Yeo P (1973) The pollination of flowers. Collins, LondonGoogle Scholar
  38. Pyke GH, Waser NM (1981) The production of dilute nectars by hummingbird and honeyeater flowers. Biotropica 13:260–270Google Scholar
  39. Ranta E (1983) Foraging differences in bumblebees. Ann Ent Fenn 49:17–22Google Scholar
  40. Ranta E, Lundberg H (1980) Resource partitioning in bumblebees: the significance of differences in proboscis length. Oikos 35:298–302Google Scholar
  41. Richards KW (1987) Diversity, density, efficiency, and effectiveness of pollinators of cicer milkvetch, Astragalus cicer L. Can J Zool 65:2168–2176Google Scholar
  42. Schemske DW (1976) Pollinator specificity in Lantana camara and L. trifolia (Verbenaceae). Biotropica 8:260–264Google Scholar
  43. Schemske DW (1983) Limits to specialization and coevolution in plant-animal mutualisms. In: Nitecki MH (ed) Coevolution, Univ Chicago Press, Chicago, pp 67–109Google Scholar
  44. Schemske DW, Horvitz CC (1984) Variation among floral visitors in pollination ability: a precondition for mutualism specialization. Science 225:519–521Google Scholar
  45. Schmitt J (1983) Flowering plant density and pollinator visitation in Senecio. Oecologia 60:97–102Google Scholar
  46. Seeley TD (1985) Honeybee Ecology. Princeton University Press, Princeton, NJGoogle Scholar
  47. Snow AA, Roubik DW (1987) Pollen deposition and removal by bees visiting two tree species in Panamá. Biotropica 19:57–63Google Scholar
  48. Spears EE (1983) A direct measure of pollinator effectiveness. Oecologia 57:196–199Google Scholar
  49. Stebbins GL (1970) Adaptive radiation of reproductive characteristics in angiosperms, I: pollination mechanisms. Ann Rev Ecol Syst 1:307–326Google Scholar
  50. Sugden EA (1986) Anthecology and pollinator efficacy of Styrax officinale subsp. redivivum (Styracaceae). Am J Bot 73:919–930Google Scholar
  51. Tepedino VJ, Stackhouse M (1987) Bee visitors of sweetvetch, Hedysarum boreale boreale (Leguminosae), and their pollen-collecting activities. Great Basin Nat 47:314–318Google Scholar
  52. Thompson JN (1982) Interaction and Coevolution. Wiley, New YorkGoogle Scholar
  53. Visscher PK, Seeley TD (1982) Foraging strategy of honeybee colonies in a temperate deciduous forest. Ecology 63:1790–1801Google Scholar
  54. Waser NM (1983) The adaptive nature of floral traits: ideas and evidence. In: Real L (ed) Pollination biology, Academic Press, London, pp 241–285Google Scholar
  55. Waser NM, Price MV (1983) Optimal and actual outcrossing in plants, and the nature of plant-pollinator interaction. In: Jones CE, Little RJ (eds) Handbook of Experimental Pollination Biology, Van Nostrand Reinhold, NY, pp 341–359Google Scholar
  56. Waser NM, Price MV, Montalvo AM, Gray RN (1987) Female mate choice in a perennial herbaceous wildflower, Delphinium nelsonii. Evol Trends Plants 1:29–33Google Scholar
  57. Watt WB, Hoch PC, Mills SG (1974) Nectar resource use by Colias butterflies. Chemical and visual aspects. Oecologia 14:353–374Google Scholar
  58. Wheelwright NT, Orians GH (1982) Seed dispersal by animals: contrasts with pollen dispensal, problems of terminology, and constraints on coevolution. Am Nat 119:401–413Google Scholar
  59. Williams CB (1964) Patterns in the Balance of Nature. Academic Press, LondonGoogle Scholar
  60. Winsor JA, Davis LE, Stephenson AG (1987) The relationship between pollen load and fruit maturation and the effect of pollen load on offspring vigor in Cucubita pepo. Am Nat 129:643–656Google Scholar
  61. Wolin CL, Galen C, Watkins L (1984) The breeding system and aspects of pollination effectiveness in Oenothera speciosa (Onagraceae). Southwest Nat 29:15–20Google Scholar

Copyright information

© Springer-Verlag 1989

Authors and Affiliations

  • Carlos M. Herrera
    • 1
  1. 1.Estación Biológica de DoñanaSevillaSpain

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