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Reproduktionsbiologische Untersuchungen an dreiLittorina-Arten der südlichen Nordsee

Investigations on reproductive biology in threeLittorina species of the southern North Sea

Abstract

Populations ofLittorina mariae, L. obtusata andL. saxatilis from the coast near Roscoff (Brittany), from the North Sea islands Helgoland and Sylt were investigated with regard to several characters of their reproductive biology. Important factors are body size and weight, maturation size, shell thickness, sex ratio and reproductive effort of adults as well as number, size and mortality of embryos. MatureL. saxatilis individuals inhabiting sandy shores are smaller and have thinner shells and higher reproductive effort than those on rocky coasts. On shores with loose and semipermanent boulders the adults are clearly larger. Interannual variations in some life history parameters may be explained by changes in food supply. In populations with small adults, ♀ ♀ are bigger than ♂ ♂. In localities whereL. mariae andL. obtusata occur sympatrically, a tendency to accentuate interspecific contrast is recognized. Life history patterns, especially inL. saxatilis populations, show two tendencies: (a) a rapid increase of shell-size and thickness, which offers better chances of survival and of maximizing clutch-size and clutch-numbers during life-time; (b) early entrance into maturity leads to accelerated reproduction, but life expectation is reduced. Both tendencies are balanced by the action of biotic and abiotic factors.

Literatur

  • Begon, M. & Mortimer, M., 1982. Population ecology — a unified study of animals and plants. Blackwell, Oxford, 200 pp.

    Google Scholar 

  • Caugant, D. & Bergerard, J., 1980. The sexual cycle and reproductive modality inLittorina saxatilis. — Veliger23, 107–111.

    Google Scholar 

  • Coe, W. R., 1949. Divergent methods of development in morphologically similar species of prosobranch gastropods. — J. Morph.84, 383–399.

    Google Scholar 

  • Emson, R. H. & Faller-Fritsch, R. J., 1976. An experimental investigation into the effect of crevice availability on abundance and size-structure in a population ofLittorina rudis (Maton) (Gastropoda: Prosobranchia). — J. exp. mar. Biol. Ecol.23, 285–297.

    Google Scholar 

  • Fretter, V. & Graham, A., 1980. The prosobranch molluscs of Britain and Denmark. Part 5: Marine Littorinacea. — J. moll. Stud. (Suppl.)7, 243–284.

    Google Scholar 

  • Gallardo, C. S., 1977. Two modes of development in the morphospeciesCrepidula dilatata (Gastropoda: Calyptraeidae) from Southern Chile. — Mar. Biol.39, 241–251.

    Google Scholar 

  • Gallardo, C. S., 1979a. Especies gemelas del géneroCrepidula (Gastropoda, Calyptraeidae) en la costa de Chile; una redescripción deC. dilatata Lamarck y descripción deC. fecunda n. sp. — Stud. neotrop. Fauna Environ.14, 215–226.

    Google Scholar 

  • Gallardo, C. S., 1979b. Developmental pattern and adaptations for reproduction inNucella crassilabrum and other muricacean gastropods. — Biol. Bull. mar. biol. Lab., Woods Hole157, 453–463.

    Google Scholar 

  • Gallardo, C. S. & Perron, F. E., 1982. Evolutionary ecology of reproduction in marine benthic molluscs. — Malacologia22, 109–114.

    Google Scholar 

  • Götting, K. J., 1974. Malakozoologie. Fischer, Stuttgart, 320 pp.

    Google Scholar 

  • Goodwin, B. J., 1978. The growth and breeding cycle ofLittorina obtusata (Gastropoda: Prosobranchiata) from Cardigan Bay. — J. moll. Stud.44, 231–242.

    Google Scholar 

  • Goodwin, B. J. & Fish, J. D., 1977. Inter- and intraspecific variation inLittorina obtusata andL. mariae (Gastropoda: Prosobranchia). — J. moll. Stud.43, 241–254.

    Google Scholar 

  • Hannaford Ellis, C. J., 1983. Patterns of reproduction in fourLittorina species. — J. moll. Stud.49, 98–106.

    Google Scholar 

  • Hart, A. & Begon, M., 1982. The status of general reproductive-strategy theories, illustrated in winkles. — Oecologia52, 37–42.

    Google Scholar 

  • McCormack, S. M., 1982. The maintenance of shore-level size gradients in an intertidal snail(Littorina sitkana). — Oecologia54, 177–183.

    Google Scholar 

  • Menge, B. A., 1974. Effect of wave action and competition on brooding and reproductive effort in the seastar,Leptasterias hexactis. — Ecology55, 84–93.

    Google Scholar 

  • Nielsen, C., 1980. On the occurrence of the prosobranchsLittorina neritoides, L. mariae andL. obtusata in Denmark. — J. moll. Stud.46, 312–316.

    Google Scholar 

  • Osche, G., 1976. Evolution. Herder, Freiburg, 116 pp.

    Google Scholar 

  • Raffaelli, D. G., 1978. The relationship between shell injuries, shell thickness and habitat characteristics of the intertidal snailLittorina rudis Maton. — J. moll. Stud.44, 166–170.

    Google Scholar 

  • Raffaelli, D. G. & Hughes, R. N., 1978. The effects of crevice size and availability on populations ofLittorina rudis Maton andLittorina neritoides (L.). — J. Anim. Ecol.47, 71–83.

    Google Scholar 

  • Sacchi, C. F., 1969a. Recherches sur l'écologie comparée deLittorina obtusata (L.) et deLittorina mariae Sacchi et Rast. (Gastropoda, Prosobranchia) en Galicie et en Bretagne. — Investigación pesq.33, 381–414.

    Google Scholar 

  • Sacchi, C. F., 1969b. Richerche biometriche sul dimorfismo sessuale della coppia di specie intertidaliLittorina obtusata (L.) eL. mariae Sacchi et Rast. (Gastropoda, Prosobranchia) in Bretagne ed in Galizia. — Boll. Pesca Piscic. Idrobiol.24, 33–47.

    Google Scholar 

  • Sacchi, C. F. & Rastelli, M., 1966.Littorina mariae, nov. sp.: les différences morphologiques et écologiques entre “nains” et “normaux” chez l'espèceL. obtusata (L.) et leur signification adaptive et évolutive. — Atti Soc. ital. Sci. nat.105, 351–369.

    Google Scholar 

  • Spight, T. M., 1981a. The ecology of body growth: environmental influences on the growth of marine snails. — Ecosynthesis1, 257–344.

    Google Scholar 

  • Spight, T. M., 1981b. Food, growth, and size of the marine snail,Thais lamellosa. — Ecosynthesis1, 197–224.

    Google Scholar 

  • Spight, T. M. & Emlen, J., 1976. Clutch sizes of two marine snails with a changing food supply. — Ecology57, 1162–1178.

    Google Scholar 

  • Stearns, S. C., 1976. Life history tactics: a review of the ideas. — Q. Rev. Biol.51, 3–47.

    PubMed  Google Scholar 

  • Stearns, S. C., 1977. The evolution of life history tactics: a critique of the theory and a review of the data. — A. Rev. Ecol. Syst.8, 145–171.

    Google Scholar 

  • Todd, C. D., 1979. Reproductive energetics of two species of dorid nudibranchs with planktotrophic and lecithotrophic larval strategies. — Mar. Biol.53, 57–68.

    Google Scholar 

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Gallardo, C.S., Götting, K.J. Reproduktionsbiologische Untersuchungen an dreiLittorina-Arten der südlichen Nordsee. Helgolander Meeresunters 39, 165–186 (1985). https://doi.org/10.1007/BF01997448

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