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Periostracal Adventitious Hairs on Spat of the Mussel Mytilus Edulis

  • D.R. Dixon (a1), A.M. Cava-Sole (a2), P.L. Pascoe (a1) and P.W.H. Holland (a3)

Morphological and genetic evidence is presented which supports the existence of periostracal adventitious hairs on spat of the mussel Mytilus edulis. This character appears not to have been reported previously for Mytilus, and was thought to be restricted to a closely-related genus, Modiolus. The species identity of hairy mussel spat was confirmed by PCR (polymerase chain reaction) amplification of a diagnostic portion of the nuclear ribosomal DNA repeat unit (i.e. the ITS-2 region). Size-frequency analysis of spat, sampled in mid-September 1993, from rock pools and from the byssus of a nearby adult mussel bed, showed that hairy spat (mean shell length 1.87 mm, SE 0.17) were significantly (t=7.74; P<0·001) smaller than smooth-shelled spat (mean shell length 2.77 mm, SE 0.28), although not all small-sized individuals displayed this character. These findings suggest that there is a gradual loss of hairs (through abrasion or by ‘programmed’ loss) as the animal grows. We suggest that this character has some adaptive significance since it probably reduces predation by boring gastropods (e.g. juvenile Nucella lapillus) and may inhibit fouling, particularly by conspecifics, during the primary settlement phase.

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T.J. Anderson & R.D. Adlard , 1994. Nucleotide sequence of a rDNA internal transcribed spacer supports synonymy of Saccostrea commercialis and S. glomemta. journal ofMolluscan Studies, 60, 196197.

B.L. Bayne , 1964. Primary and secondary settlement in Mytilus edulis L. (Mollusca). Journal of Animal Ecology, 33, 513523.

A.R. Beaumont , 1991. Genetic studies of laboratory reared mussels, Mytilus edulis: heterozygote deficiencies, heterozygosity and growth. Biological Journal of the Linnean Society of London, 44, 273285.

J.G. Carter & R.C. Aller , 1975. Calcification in the bivalve periostracum. Lethaia, 8, 315320.

G.R. Clark , 1976. Shell growth in the marine environment: approaches to the problems of marginal calcification. American Zoologist, 16, 617626.

H.B.S.M. Côrte-Real , D.R. Dixon & P.W.H. Holland , 1994 a. Intron-targeted PCR: a new approach to survey neutral DNA polymorphism in bivalve populations. Marine Biology, 120, 407413.

H.B.S.M. Côrte-Real , P.W.H. Holland & D.R. Dixon , 1994 b. Inheritance of a nuclear DNA polymorphism assayed in single bivalve larvae. Marine Biology, 120, 415420.

R. Higuchi , 1989. Simple and rapid preparation of samples for PCR. In PCR Technology, (ed. H. A. Erlich ), pp. 3138. New York: Stockton Press.

R.N. Hughes , 1970. An energy budget for a tidal-flat population of the bivalve Scrobicularia plana (Da Costa). Journal of Animal Ecology, 39, 357381.

R.R. Olson , J.A. Runstadler & T.D. Kocher , 1991. Whose larvae? Nature, London, 351, 357358.

R.K. Saiki , D.H. Gelfand , S. Stoffel , S.J. Scharf , R. Higuchi , G.T. Horn , K.B. Mullis & H.A. Erlich , 1988. Primer-directed enzymatic amplification of DNA with a thermostable DNA polymerase. Science, New York, 239, 487491.

R. Seed & R. A. Brown , 1975. Growth as a strategy for survival in two marine bivalves, Cerastodenna edule and Modiolus modiolus. Journal of Animal Ecology, 47, 283292.

D.O.F. Skibinski , M. Ahmad & J.A. Beardmore , 1978. Genetic evidence for naturally occurring hybrids between Mytilus edulis and Mytilus galloprovincialis. Evolution, 32, 354364.

S.M. Stanley , 1988. Adaptive morphology of the shell in bivalves and gastropods. In The Mollusca. Vol. 11. Form and function (ed. E.R. Trueman and M.R. Clarke ), pp. 105141. London: Academic Press.

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Journal of the Marine Biological Association of the United Kingdom
  • ISSN: 0025-3154
  • EISSN: 1469-7769
  • URL: /core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom
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