Abstract
Phallodrilus leukodermatus is not only characterized by the complete absence of mouth, gut, anus and nephridia, but also by an exceptional dermal ultrastructure which is associated with gram-negative bacteria. The vertical distribution of the worms from Bermudian carbonate sands is also unusual in attaining population maximum at oligoxic or anoxic depths around the redox discontinuity (RPD) layer, where extremely high concentrations of amino acids and sugars are to be recorded. Based on results from current ecophysiological and ultrastructural studies, an interpretation of the unique biology of the worms is attempted.
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Boaden, C., 1977. Thiobiotic facts and fancies (aspects of the distribution and evolution of anaerobic meiofauna). Mikrofauna Meeresboden 61: 45–63.
Erséus, C., 1979. Taxonomic revision of the marine genus Phallodrilus Pierantoni (Oligochaeta, Tubificidae), with descriptions of thirteen new species. Zool. Scr. 8: 187–208.
Erséus, C., 1980. Morphology and taxonomy of the marine tubificid subfamily Phallodrilinae Brinkhurst, 1971 (Oligochaeta). Ph.D. Thesis, Univ. Göteborg, Sweden, 83 pp.
Erséus, C., 1981. Taxonomic studies of Phallodrilinae (Oligochaeta, Tubificidae) from the Great Barrier Reef and the Comoro Islands with descriptions of ten new species and one new genus. Zool. Scr. 10: 15–31.
Erséus, C. & H. R. Baker, 1982. New species of the gutless marine genus Inanidrilus (Oligochaeta, Tubificidae) from the Gulf of Mexico and Barbados. Can. J. Zool. 60: 3063–3067.
Felbeck, H., 1981. Chemoautotrophic potential of the hydrothermal vent tube worm, Riftia pachyptila Jones (Vestimentifera). Science 213: 336–338.
Felbeck, H., J. J. Childress & G. N. Somero, 1981. Calvin-Benson cycle and sulphide oxidation enzymes in animals from sulphide-rich habitats. Nature 293: 291–293.
Fenchel, T. M. & R. J. Riedl, 1970. The sulphide system: a new biotic community underneath the oxidized layer of marine sand bottoms. Mar. Biol. 7: 255–268.
Giere, O., 1979. Studies on marine Oligochaeta from Bermuda, with emphasis on new Phallodrilus-species (Tubificidae). Cah. Biol. mar. 20: 301–314.
Giere, O., 1981. The gutless marine oligochaete Phallodrilus leukodermatus. Structural studies on an aberrant tubificid associated with bacteria. Mar. Ecol. Prog. Ser. 5: 353–357.
Giere, O., G. Liebezeit & R. Dawson, 1982. Habitat conditions and distribution pattern of the gutless oligochaete Phallodrilus leukodermatus. Mar. Ecol. Prog. Ser. 8: 291–299.
Giere, O. & O. Pfannkuche, 1982. Ecology and biology of marine Oligochaeta, a review. Oceanogr. mar. Biol. arm. Rev. 20: 173–308.
Heckmann, K., 1975. Omikron, ein essentieller Endosymbiont von Euplotes aediculatus. J. Protozool. 22: 97–104.
Jamieson, B. G. M., 1977. Marine meiobenthic Oligochaeta from Heron and Wistari Reefs (Great Barrier Reef) of the genera Clitellio, Limnodriloides and Phallodrilus (Tubificidae) and Grania (Enchytraeidae). Zool. J. linn. Soc. 61: 329–349.
Jamieson, B. G. M., 1981. The ultrastructure of the Oligochaeta. Academic Press, N.Y. 462 pp.
Jørgensen, B. B., 1977. The sulphur cycle of a coastal marine sediment (Limfjorden, Denmark). Limnol. Oceanogr. 22: 814–832.
Jouin, C., 1979. Description of a free-living polychaete without gut: Astomus taenioides n. gen., n. sp. (Protodrilidae, Archiannelida). Can. J. Zool. 57: 2448–2456.
Kepkay, P. E. & J. A. Novitsky, 1980. Microbial control of organic carbon in marine sediments: Coupled chemoautotrophy and heterotrophy. Mar. Biol. 55: 261–266.
Powell, E. N. & T. J. Bright, 1981. A thiobios does exist — gnathostomulid domination of the Canyon community at the East Flower Garden brine seep. Int. Revue ges. Hydrobiol. 66: 675–683.
Powell, E. N., M. A. Crenshaw & R. M. Rieger, 1979. Adaptations to sulfide in the meiofauna of the sulfide system. I. 35S-sulfide accumulation and the presence of a sulfide detoxification system. J. exp. mar. Biol. Ecol. 37: 57–76.
Powell, E. N., M. A. Crenshaw & R. M. Rieger, 1980. Adaptations to sulfide in sulfide-system meiofauna. Endproducts of sulfide detoxification in three turbellarians and a gastrotrich. Mar. Ecol. Prog. Ser. 2: 169–177.
Reid, R. G. B., 1980. Aspects of the biology of a gutless species of Solemya (Bivalvia: Protobranchia). Can. J. Zool. 58: 386–393.
Reid, R. G. & F. R. Bernard, 1980. Gutless bivalves. Science 208: 609–610.
Richards, K. S., 1977. Structure and function in the oligochaete epidermis (Annelida). Symp. zool. Soc. Lond. 39: 171–193.
Richards, K. S., T. P. Fleming & B. G. M. Jamieson, 1982. An ultrastructural study of the distal epidermis and the occurrence of subcuticular bacteria in the gutless tubificid Phallodrilus albidus (Oligochaeta: Annelida). Aust. J. Zool. 30: 327–336.
Siebers, D., 1976. Absorption of neutral and basic amino acids across the body surface of two annelid species. Helgoländer wiss. Meeresunters. 28: 456–466.
Southward, A. J. & E. C. Southward, 1981. Dissolved organic matter and the nutrition of the Pogonophora: a reassessment based on recent studies of their morphology and biology. Kieler Meeresforsch., Sonderh. 5: 445–453.
Storch, V. & U. Welsch, 1970. Über die Feinstruktur der Polychaeten-Epidermis (Annelida). Z. Morph. Tiere 66: 310–322.
Williams, P. M., K. L. Smith, E. M. Druffel & T. W. Linick, 1981. Dietary carbon sources of mussels and tubeworms from Galápagos hydrothermal vents determined from tissue 14C activity. Nature 292: 448–449.
Zimmermann, R., R. Iturriaga & J. Becker-Birck, 1978. Simultaneous determination of the total number of aquatic bacteria and the number thereof involved in respiration. Appl. envir. Microbiol. 36: 926–935.
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Giere, O., Felbeck, H., Dawson, R. et al. The gutless oligochaete Phallodrilus leukodermatus Giere, a tubificid of structural, ecological and physiological relevance. Hydrobiologia 115, 83–89 (1984). https://doi.org/10.1007/BF00027897
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DOI: https://doi.org/10.1007/BF00027897