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Resource allocation, demography and the radiation of life histories in rough periwinkles (Gastopoda)

  • R. N. Hughes
Conference paper
  • 80 Downloads
Part of the Developments in Hydrobiology book series (DIHY, volume 111)

Abstract

Applicability of life-history theory to higher levels of comparison (from populations, through ecotypes to sibling species) was investigated in rough periwinkles, whose life histories have diversified since colonization of the North Atlantic by an oviparous ancestor in the upper Pliocene. Comparisons were made among populations of the ovoviviparous Littorina saxatilis, between L. saxatilis and its ecotype, L. neglecta (with an annual life history) and between the sibling species L. saxatilis and L. arcana, the latter of which retains the ancestral oviparity.

Resource-allocation priority, reproductive effort and related trade offs were compared between the ecotypes and the sibling species by measuring changes in flesh mass and reproductive output in snails subjected to different degrees of food deprivation, and by measuring mortality rate of snails stressed by desiccation, high temperature and low salinity. Body size had a marked effect on all parameters, but after statistically removing this effect there remained no significant differences in allocation among ecotypes or species.

Published demographical data were reviewed for correlations between habitat, mortality regime and life-history characteristics. Populations of L. saxatilis varied principally in size at birth and in adult size. Theoretical premises based on density-dependent versus density-independent mortality regimes could not explain these trends. Instead, size at birth may have reflected the mechanical, physiological or biological nature of mortality risk rather than its density dependence or independence. Adult size reflected the available sizes of crevices used for shelter and perhaps also the quality of feeding conditions.

Radiation of life histories within the rough periwinkles is interpreted as a series of adaptations to a progressively wider range of habitats. The transition from oviparity to ovoviviparity allows colonization of estuaries, saltmarshes and pebble beaches too hazardous for naked egg masses. The transition from a perennial to an annual life history in barnacle ecotypes follows from allometric re-scaling of morphological and physiological parameters, enabling reproduction and brooding to occur at the small body size necessary for life within empty barnacle tests. This suite of adaptations allows exploitation of a relatively benign microhabitat that occurs almost ubiquitously on exposed rocky shores of the temperate North Atlantic. The persistence of oviparous forms, presumably in the face of competition from sympatric ovoviviparous forms, remains unexplained.

Key words

allocation trade offs oviparity/brooding body size niche diversification 

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References

  1. Brody, S. J., 1945. Bioenergetics and growth. Reinhold, New York, 1023 pp.Google Scholar
  2. Cannon, J. P. & R. N. Hughes, 1992. Resistance to environmental Stressors in Littorina saxatilis (Olivi) and L. neglecta Bean. In J. Grahame, P. J. Mill & D. G. Reid (eds), Proceedings of the 3rd International Symposium on Littorinid Biology. The Malacolog-ical Society of London, London: 61–68.Google Scholar
  3. Elliott, J. M. & W. Davidson, 1975. Energy equivalents of oxygen consumption in animal energetics. Oecologia (Berlin) 19: 195–201.CrossRefGoogle Scholar
  4. Ernsting, G. & J. A. Isaaks, 1991. Accelerated ageing: a cost of reproduction in the carabid beetle Notiophilus biguttatus F. Funct. Ecol. 5: 299–303.CrossRefGoogle Scholar
  5. Fish, J. D. & L. Sharp, 1985. The ecology of the periwinkle, Littorina neglecta Bean. In P. G. Moore & R. Seed (eds), The ecology of rocky coasts. Hodder & Stoughton, Lond.: 143–156.Google Scholar
  6. Grahame, J. & P. J. Mill, 1989. Shell shape variation in Littorina saxatilis (Olivi) and L. arcana Hannaford Ellis: a case of character displacement? J. mar. biol. Ass. U.K. 69: 837–855.CrossRefGoogle Scholar
  7. Grahame, J. & P. J. Mill, 1992. Local and regional variation in shell shape of rough periwinkles in southern Britain. In J. Grahame, P. J. Mill & D. Reid (eds), Proceedings of the 3rd International Symposium on Littorinid Biology. The Malacological Society of London, London: 99–106.Google Scholar
  8. Grahame, J., P. J. Mill & A. Brown, 1990. Adaptive and non-adaptive variation in two species of rough periwinkle (Littorina) on British shores. Hydrobiologia 193 (Dev. Hydrobiol. 56): 223–231.CrossRefGoogle Scholar
  9. Hart, A. & M. Begon, 1982. The status of general reproductivestrategy theories, illustrated in winkles. Oecologia (Berlin) 52: 37–42.CrossRefGoogle Scholar
  10. Hannaford Ellis, C. J., 1979. Morphology of the oviparous rough periwinkle, Littorina arcana Hannaford Ellis, 1978, with notes on the taxonomy of the L. saxatilis species complex (Prosobranchia: Littorinidae). J. Conch. 30: 43–56.Google Scholar
  11. Hannaford Ellis, C. J., 1983. Patterns of reproduction in four Littorina species. J. moll. Stud. 49: 98–106.Google Scholar
  12. Hart, A. & M. Begon, 1982. The status of general reproductivestrategy theories, illustrated in winkles. Oecologia (Berlin) 52: 37–42.CrossRefGoogle Scholar
  13. Holland, D. L., R. Tantanasiriwong & P. J. Hannant, 1975. Biochemical composition and energy reserves in the larvae and adults of the four British periwinkles Littorina littorea, L. littoralis, L. saxatilis and L. neritoides. Mar. Biol. 33: 235–239.CrossRefGoogle Scholar
  14. Hughes, R. N. 1980. Population dynamics, growth and reproductive rates of Littorina nigrolineata Gray from a moderately sheltered locality in North Wales. J. exp. mar. Biol. Ecol. 44: 211–228.CrossRefGoogle Scholar
  15. Hughes, R. N. 1986. A functional biology of marine gastropods. Croom-Helm, London and Sydney, 245 pp.Google Scholar
  16. Hughes, R. N. & D. J. Roberts, 1980. Reproductive effort of winkles (Littorina spp.) with contrasted methods of reproduction. Oecologia (Berlin) 47: 130–136.CrossRefGoogle Scholar
  17. Hughes, R. N. & D. J. Roberts, 1981 Comparative demography of Littorina rudis, L. nigrolineata and L. neritoides on three contrasted shores in North Wales. J. anim. Ecol. 50: 251–268.CrossRefGoogle Scholar
  18. Johannesson, B. & K. Johannesson, 1990a. Littorina neglecta Bean, a morphological form within the variable species Littorina saxatilis (Olivi)? Hydrobiologia 193 (Dev. Hydrobiol. 56): 71–87.CrossRefGoogle Scholar
  19. Johannesson, K. & B. Johannesson, 1990b. Genetic variation within Littorina saxatilis (Olivi) and Littorina neglecta Bean: is L. neglecta a good species? Hydrobiologia 193 (Dev. Hydrobiol. 56): 89–97.CrossRefGoogle Scholar
  20. Mill, P. J. & J. Grahame, 1990. Distribution of the species of rough periwinkle (Littorina) in Great Britain. Hydrobiologia 193 (Dev. Hydrobiol. 56): 21–27.CrossRefGoogle Scholar
  21. Mill, P. J. & J. Grahame, 1992. Distribution of the rough periwinkles in Great Britain. In J. Grahame, P. J. Mill & D. G. Reid (eds), Proceedings of the 3rd International Symposium on Littorinid Biology. The Malacological Society of London, London: 305–307.Google Scholar
  22. Naylor, R. & M. Begon, 1982. Variations within and between populations of Littorina nigrolineata Gray on Holy Island, Anglesey. J. Conch. 31: 17–30.Google Scholar
  23. Palmer, A. R., 1982. Growth in marine gastropods: a nondestructive technique for independently measuring shell and body weight. Malacologia 23: 63–73.Google Scholar
  24. Pianka, E. R., 1970. On ‘r’ and ‘K’ selection. Am. Nat. 104: 592–597.CrossRefGoogle Scholar
  25. Raffaelli, D. G., 1976. The Determinants of Zonation of Littorina neritoides and Littorina saxatilis species-complex. Ph.D. thesis, University of Wales, Bangor, 177 pp.Google Scholar
  26. Raffaelli, D. G. 1978. Factors affecting the population structure of Littorina neglecta Bean. J. moll. Stud. 44: 223–230.Google Scholar
  27. Raffaelli, D. G. 1982. Recent ecological research on some European species of Littorina. J. moll. Stud. 48: 241–342.Google Scholar
  28. Raffaelli, D. G. & R. N. Hughes, 1978. The effects of crevice size and availability on populations of Littorina rudis and Littorina neritoides. J. anim. Ecol. 47: 71–83.CrossRefGoogle Scholar
  29. Reid, D. G. 1990. Trans-Arctic migration and speciation induced by climatic change: the biogeography of Littorina (Mollusca: Gastropoda). Bull. mar. Sci. 47: 35–49.Google Scholar
  30. Reid, D. G. 1993. Barnacle-dwelling ecotypes of three British Littorina species and the status of Littorina neglecta Bean. J. moll. Stud. 59: 51–62.CrossRefGoogle Scholar
  31. Roberts, D. J. 1979. Reproductive strategies of Littorina neritoides and the Littorina saxatilis species complex. Ph.D. thesis, University of Wales, Bangor, pp. 160.Google Scholar
  32. Roberts, D. J. & R. N. Hughes, 1980. Growth and reproductive rates of Littorina rudis from three contrasted shores in North Wales, UK. Mar. Biol. 58: 47–54.CrossRefGoogle Scholar
  33. Ryan, B. F., B. L. Joiner & T. Ryan, 1985. Minitab Handbook. Duxbury Press, Boston.Google Scholar
  34. Sibly, R. M. & P. Calow, 1986. Physiological ecology of animals: an evolutionary approach. Blackwell Scientific Publications, Oxford, 179 pp.Google Scholar
  35. Stearns, S. C, 1992. The evolution of life histories. Oxford University Press, Oxford, 179 pp.Google Scholar
  36. Warwick, T., 1983. A method of maintaining and breeding members of the Littorina saxatilis (Olivi) species complex. J. moll. Stud. 48: 368–370.Google Scholar
  37. Warwick, T., A. J. Knight & R. D. Ward, 1990. Hybridisation in the Littorina saxatilis species complex (Prosobranchia: Mollusca). Hydrobiologia 193 (Dev. Hydrobiol. 56): 109–116.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 1995

Authors and Affiliations

  • R. N. Hughes
    • 1
  1. 1.School of Biological SciencesUniversity of WalesBangor, GwyneddUK

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