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Reproduction and life history strategy of the hermit crab Pagurus bernhardus

Published online by Cambridge University Press:  11 May 2009

I. Lancaster
Penwith Sixth Form College, St. Clare, Penzance, Cornwall, TR18 2SA


Hermit crabs use gastropod shells to protect their bodies and developing eggs; an inadequate supply of shells of the appropriate size will, therefore, adversely affect their growth, fecundity and longevity. Since the supply of shells is commonly limited, mechanisms that help to reduce these adverse effects will be selectively advantageous. In Pagurus bernhardus it is suggested that two mechanisms have evolved in this respect: larval settlement is encouraged in the littoral zone where gastropod species are diverse and numerous and where the youngest hermits will find growth potentially unrestricted; and females breed within their first year of life and at a size substantially below that which could be attained in the shells commonly available to them. This ‘precocious’ breeding is suggested to be an adaptation enabling hermits to overcome the problems of shell-limitation, since it frees females of the need to attain a specific age or size before reproducing - a situation which would be perilous when large shells are scarce. Males of a similar age are freed from competition for the larger shells as a result of this strategy, since the growth of the females is suppressed while they are ovigerous.

Research Article
Copyright © Marine Biological Association of the United Kingdom 1990

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Ballantine, W.J., 1961. A biologically-defined exposure scale for the comparative description of rocky shores. Field Studies, 1 (2), 119.Google Scholar
Barrett, J., 1974. Life on the Seashore. Glasgow: Collins.Google Scholar
Bertness, M.D., 1981. Predation, physical stress, and the organisation of a tropical rocky intertidal hermit crab community. Ecology, 62, 411425.CrossRefGoogle Scholar
Blackstone, N.W., 1985. The effects of shell size and shape on growth and form in the hermit crab Pagurus longicarpus. Biological Bulletin. Marine Biological Laboratory, Woods Hole, Mass., 168, 7590.CrossRefGoogle Scholar
Blackstone, N.W., 1986. Variation of cheliped allometry in a hermit crab - the role of introduced periwinkle shells. Biological Bulletin. Marine Biological Laboratory, Woods Hole, Mass., 171, 379390.CrossRefGoogle Scholar
Blackstone, N.W., 1987. Specific growth rates of parts in a hermit crab - a reductionist approach to the study of allometry. Journal of Zoology, 211, 531545.CrossRefGoogle Scholar
Bookhout, C.G., 1964. Salinity effects on the larval development of Pagurus bernhardus (L.) reared in the laboratory. Ophelia, 1, 275294.CrossRefGoogle Scholar
Boolootian, R.A., Giese, A.C., Farmanfarmaian, A. & Tucker, J., 1959. Reproductive cycles of five west coast crabs. Physiological Zoology, 32, 213220.CrossRefGoogle Scholar
Calow, P., 1977. Ecology, evolution, and energetics: a study in metabolic adaptation. Advances in Ecological Research, 10, 162.CrossRefGoogle Scholar
Calow, P., 1983. Energetics of reproduction and its evolutionary implications. Biological Journal of the Linnean Society of London, 20, 153165.CrossRefGoogle Scholar
Crothers, J.H. & Crothers, M., 1983. A key to the crabs and crab-like animals of British Inshore Waters. Field Studies, 3, 753806.Google Scholar
Cuadras, J. & Pereira, F., 1977. Invertebrates associated with Dardanus arrosor (Anomura, Diogenidae). Vie et Milieu, 27, 301310.Google Scholar
Drapkin, E.I., 1963. Effect of Rapana bezoar Linne (Mollusca, Muricidae) on the Black Sea fauna. Doklady Academii Nauk SSSR, 151, 964966.Google Scholar
Elwood, R.W. & Stewart, A., 1987. Reproduction in the littoral hermit crab Pagurus bernhardus. Irish Naturalists' Journal, 22, 252255.Google Scholar
Fotheringham, N., 1976 a. Effects of shell stress on the growth of hermit crabs. Journal of Experimental Marine Biology and Ecology, 23, 299305.CrossRefGoogle Scholar
Fotheringham, N., 1976 b. Hermit crab shells as a limiting resource (Decapoda, Paguridae). Crustaceana, 31, 193199.CrossRefGoogle Scholar
Graham, A., 1971. A Synopsis of the British Prosobranch and Other Operculate Molluscs. London: Academic Press.Google Scholar
Hartnoll, R.G. & Gould, P., 1988. Brachyuran life history strategies and the optimization of egg production. Symposia of the Zoological Society of London, no. 59, 19.Google Scholar
Hazlett, B.A., 1966. Social behaviour of the Paguridae and Diogenidae of Curacao. Studies on the Fauna ofCuraqao, 23, 1143.Google Scholar
Hazlett, B.A., 1968. The sexual behavior of some European hermit crabs. Pubblicazioni della Stazione Zoologica di Napoli, 36, 238252.Google Scholar
Hazlett, B.A., 1981. The behavioural ecology of hermit crabs. Annual Review of Ecology and Systematics, 12, 122.CrossRefGoogle Scholar
Ingle, R.W., 1985. Northeastern Atlantic and Mediterranean hermit crabs (Crustacea: Anomura: Paguridea: Paguridae). 1. The genus Pagurus Fabricius, 1775. Journal of Natural History, 19, 745769.CrossRefGoogle Scholar
Jackson, H.G., 1913. Eupagurus. L.M.B.C. Memoirs on Typical British Marine Plants and Animals, no. 21, 79 pp.Google Scholar
Jensen, J.P., 1958. The relation between body size and number of eggs in marine malacostrakes. Meddelelser fra Danmarks Fiskeriog Havundersegelser, 2 (19), 25 pp.Google Scholar
Jensen, K. & Bender, K., 1973. Invertebrates associated with snail shells inhabited by Pagurus bernhardus (L.) (Decapoda). Ophelia, 10, 185192.CrossRefGoogle Scholar
Kellogg, C.W., 1976. Gastropod shells: a potentially limiting resource for hermit crabs. Journal of Experimental Marine Biology and Ecology, 22, 101111.CrossRefGoogle Scholar
Knudsen, J.W., 1964. Observations on the reproductive cycles and ecology of the common Brachyura and crab-like Anomura of Puget Sound, Washington. Pacific Science, 18, 333.Google Scholar
Kurata, H., 1962. Studies on the age and growth of Crustacea. Bulletin of the Hokkaido Regional Fisheries Research Laboratory, no. 24, 1115.Google Scholar
Lancaster, I., 1988 a. Pagurus bernhardus (L.) - an introduction to the natural history of hermit crabs. Field Studies, 7, 189238.Google Scholar
Lancaster, I., 1988 b. Optimisation in the Life History of the Hermit Crab Pagurus bernhardus (L.). PhD Thesis, Plymouth Polytechnic.Google Scholar
Lewis, J.R., 1964. The Ecology of Rocky Shores. London: English University Press.Google Scholar
Marine Biological Association, 1957. Plymouth Marine Fauna, 3rd ed.Plymouth.Google Scholar
Markham, J.C., 1968. Notes on growth patterns and shell utilisation of the hermit crab Pagurus bernhardus (L.). Ophelia, 5, 189205.CrossRefGoogle Scholar
Passano, L.M., 1960. Moulting and its control. In The Physiology of Crustacea, vol. 1 (ed. T.H., Waterman), pp. 473536. New York: Academic Press.Google Scholar
Perkins, E.J., 1985. Some aspects of the biology of Pagurus bernhardus (L.). Transactions of the Dumfriesshire and Galloway Natural History and Antiquarian Society, 59, 2127.Google Scholar
Philippi, T. & Seger, J., 1989. Hedging one's evolutionary bets, revisited. Trends in Ecology and Evolution, 4, 4144.CrossRefGoogle ScholarPubMed
Pike, R.B. & Williamson, D.I., 1959. Observations on the distribution and breeding of British hermit crabs and the stone crab (Crustacea: Diogenidae, Paguridae and Lithodidae). Proceedings of the Zoological Society of London, 132, 551567.CrossRefGoogle Scholar
Powell, H.T., Holme, N.A., Knight, S.J.T. & Harvey, R., 1978. Survey of the Littoral Zone of the Coast of Great Britain. 2. Report on the Shores of Devon and Cornwall. Scottish Marine Biological Association/Marine Biological Association Intertidal Survey Unit. [Nature Conservancy Council Contract Report.]Google Scholar
Raymont, J.E.G., 1963. Plankton and Productivity in the Oceans. Oxford: Pergamon Press.Google Scholar
Reese, E.S., 1968. Annual breeding seasons of three sympatric species of tropical intertidal hermit crabs, with a discussion of factors controlling breeding. Journal of Experimental Marine Biology and Ecology, 2, 308318.CrossRefGoogle Scholar
Selbie, C.M., 1921. The Decapoda Reptantia of the coasts of Ireland. Part II. Paguridae. Scientific Investigations of the Fisheries Branch. Department of Agriculture and Technical Instruction for Ireland, no. 1, 68 pp.Google Scholar
Thompson, M.T., 1904. The metamorphosis of the hermit crab. Proceedings of the Boston Society for Natural History, 31, 147209.Google Scholar
Todd, C.D., 1985. Reproductive strategies of north-temperate rocky shore invertebrates. In The Ecology of Rocky Coasts (ed. P.G., Moore and R., Seed), pp. 203219. London: Hodder and Stoughton.Google Scholar
Vance, R.R., 1972. Competition and mechanism of coexistence in three sympatric species of intertidal hermit crabs. Ecology, 53, 10621074.CrossRefGoogle Scholar
Wear, R.G., 1974. Incubation in British decapod Crustacea, and the effects of temperature on the rate of success of embryonic development. Journal of the Marine Biological Association of the United Kingdom, 54, 745762.CrossRefGoogle Scholar
Yonge, C.M., 1949. The Sea Shore. London: Collins.Google Scholar