Abstract
Burrow morphology, detrital tube formation within the burrow, and ultrastructure of the surface of the burrow of Polydora websteri Hartman, 1943, are described in the shells of Crassostrea virginica (Gmelin) and of Mytilus edulis Linné. Observations were made on live worms living normally in artificial preparations of polished shell covered with transparent plastic film. P. websteri is capable of settling wherever there are crevices in shell surfaces, and slowly penetrates the shell forming a U- or flask-shaped cavity. A detrital tube is formed within the burrow from detritus collected and pressed in place by the worm. During this process, the modified setae of the 5th setiger are thrust against the wall of the inner tube and help to keep the diameter of the inner tube constant throught its length. Individuals of P. websteri burrow into the shell when placed on preparations of polished shell of Mytilus edulis under plastic film. As they do so, they secrete a viscous fluid which dissolves interprismatic and interlamellar organic matrices and then dissolves the exposed crystals. Etched prisms and lamellae reveal a complex pattern of internal dissolution. Enlargement of the burrow by the worm thus takes place by chemical dissolution of shell and also probably by flushing of loosened partially dissolved prisms and lamellae from the tube. Some shell fragments become incorporated in the walls of the detrital tube. There is no evidence of setal abrasion on the shell walls of the burrow even at the ultrastructural level
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Literature Cited
Blake, J.A.: Reproduction and larval development of Polydora from Northern New England (Polychaeta: Spionidae). Ophelia 7, 1–63 (1969)
— and J.W. Evans: Polydora and related genera as borers in mollusk shells and other calcareous substrates. Veliger 15, 235–249 (1973)
Boekschoten, G.J.: Shell borings of sessile epibiontic organisms as palaecological guides (with examples from the Dutch Coast). Palaeogeor. Palaeoclim. Palaeoecol. 2, 333–379 (1966)
Carriker, M.R. and E.H. Smith: Comparative calcibiocavitology: summary and conclusions. Am. Zool. 9, 1011–1020 (1969)
Davis, J.D.: Polydora infestation of Arctic wedge clams: a pattern of selective attack. Proc. natn. Shellfish. Ass. 57, 67–72 (1967)
Dollfus, R-P.: Résumé de nos principales, connaissances pratiques sur les maladies et les ennemis de l'huitre. Notes Mém. Off. scient. tech. Pêch. marit. 7, 1–46 (1921)
—: Sur l'attaqué de la coquille des bigorneaux Littorina littorea (L) de Hollande par Polydora. Revue Trav. Inst. (scient. tech.) Pêch. marit. 5, 273–277 (1932)
Dorsett, D.A.: The behavior of Polydora ciliata (Johnst.) Tube-building and burrowing. J. mar. biol. Ass. U.K. 41, 577–590 (1961)
Erben, H.K.: Anorganische und organische Schalenkomponenten bei Cittarium pica (L.) (Archaegostropoda). Biomineraliz. Res. Rep. 3, 51–64 (1971)
Evans, J.W.: Borers in the shell of the sea scallop, Placopecten magellanicus. Am. Zool. 9, 775–782 (1969)
Galtsoff, P.S.: The American oyster Crassostrea virginica Gmelin. Fishery Bull. Fish Wildl. Serv. U.S. 64, 1–480 (1964)
Grégoire, C.: Structure of the molluscan shell. In: Chemical zoology. Vol. VII Mollusca, pp 45–102. Ed. by M. Florkin and B.T. Scheer. New York: Academic Press 1972
Haigler, S.: Boring mechanism of Polydora websteri inhabiting Crassostrea virginica. Am. Zool. 9, 821–828 (1969)
Hannerz, L.: Larval development of the polychaete families Spionidae Sars, Disomidae Mensil, and Poecilochaetidae n. fam. in the Gullmar Fjord (Sweden). Zool. Bird. Upps. 31, 1–204 (1956)
Hempel, C.: Über den Röhrenbau und die Nahrungs-aufnahme einige Spioniden (Polychaete, Sedentaria) der deutschen Küsten. Helgoländer wiss. Meeresunters. 6, 100–135 (1957)
Hertweck, G.: Polydora ciliata auf lebenden Herzmuscheln. Natur. Mus., Frankf. 101, 458–466 (1971)
Hopkins, S.H.: The planktonic larvae of Polydora websteri Hartman (Annelida, Polychaete) and their settling on oysters. Bull. mar. Sci. Gulf Caribb. 8, 268–277 (1958)
Kavanagh, L.D.: Mud blisters in Japanese oysters imported to Louisiana. La Conserv. 1940, 31–34 (1940)
Kobayashi, I.: Internal microstructure of the shell of bivalve molluscs. Am. Zool. 9, 663–672 (1969)
Korringa, P.: The shell of Ostrea edulis as a habitat: observations on the epifauna of oysters living in the Oosterschelde, Holland, with some notes on polychaete worms occurring there in other habitats. Archs néerl. Zool. 10, 32–152 (1951)
Lamy, E. et M. André: Annélides perforant les coquilles des mollusques. Int. Congr. Zool. 12, (Lisbon, 1935), 946–968 (1937)
Landers, W.S.: Infestation of the hard clam, Mercenaria mercenaria, by the boring polychaete worm, Polydora ciliata. Proc. natn. Shellfish. Ass. 57, 63–66 (1967)
Loosanoff, V.L. and J.B. Engle: Polydora in oysters suspended in the water. Biol. Bull. mar. biol. Lab., Woods Hole 85, 69–78 (1943)
Lunz, G.R., Jr.: Polydora, a pest in South Carolina oysters. J. Elisha Mitchell scient. Soc. 57, 273–283 (1941)
Mackin, J.G. and F.F. Cauthron: Effect of heavy infestations of Polydora websteri Hartman on Crassostrea virginica (Gmelin) in Louisiana. Conv. Addr. natn. Shellfish. Ass. 1952, 14–24 (1952) [Journal continued as Proc. natn. Shellfish. Ass.]
Medcof, J.G.: The mud-blister worm Polydora in Canadian oysters. J. Fish. Res. Bd Can. 6, 498–505 (1946)
Merrill, A.S.: Living inclusion in the shell of the sea scallop Placopecten magellanicus. Ecology 41, 385–386 (1960)
Mohammad, M.-B.M.: Infestation of the pearl oyster Pinctada margaritifera (Linné) by a new species of Polydora in Kuwait, Arabian Gulf. Hydrobiologia 39, 463–477 (1972)
Mutvei, H.: Ultrastructure of the mineral and organic components of molluscan nacreous layers. Biomineraliz. Res. Rep. 2, 48–72 (1970)
Needler, A.W.H.: Oyster farming in eastern Canada. Bull. Fish. Res. Bd Can. 60, 1–83 (1941)
Söderstrom, A.: Über das Bohren der Polydora ciliata. Zool. Bidr. Upps. 8, 319–326 (1923)
Taylor, J.D., W.J. Kennedy and A. Hall: The shell structure and mineralogy of the Bivalvia: introduction Nuculacea-Trigonacea. Bull. Br. Mus. nat. Hist. (Ser. D) 3, 1–125 (1969)
Towe, K.M. and G.H. Hamilton: Ultramicrotome-induced deformation artifacts in densely calcified material. J. Ultrastruct. Res. 22, 274–281 (1968a)
——: Ultrastructure and inferred calcification of the mature and developing nacre in bivalve mollusks. Calc. Tissue Res. 1, 306–318 (1968b)
— and G.R. Thompson: The structure of some bivalve shell carbonates prepared by ion-beam thinning, a comparison study. Calc. Tissue Res. 10, 38–48 (1972)
Travis, D.F. and M. Gonsalves: Comparative ultrastructure and organization of the prismatic region of two bivalves and its possible relation to the chemical mechanism of boring. Am. Zool. 9, 635–661 (1969)
Turner, H.J., Jr. and J.E. Hanks: Infestation of Pecten irradians by Polydora. Nautilus 72, 109–111 (1959)
Watabe, N.: Studies on shell formation. XI. Crystal-matrix relationships in the inner layers of mollusk shells. J. Ultrastruct. Res. 12, 351–370 (1965)
Wells, H.W., M.J. Wells and I.E. Gray: The calico scallop community in North Carolina. Bull. mar. Sci. Gulf Caribb. 14, 561–593 (1964)
Wise, S.W., Jr.: Study of molluscan shell ultrastructures. In: Scanning electron microscopy, pp 205–216. Ed. by O. Johari. Chicago: Illinois Institute of Technology, Research Institute 1969
—: Microarchitecture and mode of formation of nacre (mother-of-pearl) in pelecypods, gastropods, and cephalopods. Eclog. geol. Helv. 63, 775–797 (1970)
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Communicated by J. Bunt, Miami
University of Delaware College of Marine Studies Contribution No. 99.
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Zottoli, R.A., Carriker, M.R. Burrow morphology, tube formation, and microarchitecture of shell dissolution by the spionid polychaete Polydora websteri . Mar. Biol. 27, 307–316 (1974). https://doi.org/10.1007/BF00394366
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DOI: https://doi.org/10.1007/BF00394366