Abstract
The body wall muscles in five species of branchiobdellidans are all arranged in the oligochaete pattern and the muscle fibres are obliquely striated. The structure of the circular muscle fibres do vary to some degree. The longitudinal muscle fibres in Ankyrodrilus legaeus, Branchiobdella kozarovi, and Xironogiton instabilis all are round circomyarian and thus double-obliquely striated. These species represent three of the four genera composing the family Branchiobdellidae. Although Bdellodrilus illuminatus and Cambarincola fallax, from the families Bdellodrilidae and Cambarincolidae, respectively, also possess a few round circomyarian fibres, most are ‘polyplatymyarian’ comparable to single-obliquely striated fibres. A similar division of branchiobdellidan families is obtained based on the number of anterior nephridial pores. The muscular structure in the branchiobdellidans shows both similarities and differences with the leeches and the lumbriculid oligochaetes. One phylogenetic explanation for this is that the branchiobdellidans separated from the common clitellate ancestor before the oligochaetes and leeches became recognizable taxa.
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Brinkhurst, R. O. & S. R. Gelder, 1989. Did the lumbriculids provide the ancestors of the branchiobdellidans, acanthobdellidans and leeches? Hydrobiologia 180: 7–15.
Brinkhurst, R. O. & S. R. Gelder, 1991. Chapter 12. Annelida: Oligochaeta and Branchiobdellida. In J. H. Thorpe & F. Covitch (eds), Ecology and Classification of North American Freshwater Invertebrates. Academic Press, New York: 401–435.
Candia Carnevali, M. D. & M. Ferraguti, 1979. Structure and ultrastructure of muscle in the priapulid Halicriptus spinulosus; functional and phylogenetic remarks. J. mar. bio. Ass. 59: 734–744.
de Eguileor, M. & M. Ferraguti, 1980. Architecture of the T-system in helical paramyosin muscles of an annelid (Branchiobdella). Tissue & Cell 12: 739–747.
de Eguileor, M. & R. Valvassori, 1977. Studies on the helical and paramyosinic muscles. VII. Fine structure of body wall muscles in Sipunculus nudus. J. Submicr. Cytol. 9: 363–372.
de Eguileor, M., G. Lanzavecchia & R. Valvassori, 1994. Ultrastructural and histochemical comparison in two haplotaxids. Hydrobiologia 278 (Dev. Hydrobiol. 95): 157–163.
de Eguileor, M., R. Valvassori, G. Lanzavecchia & L. Di Lernia, 1989. T-system in muscles of microdriles. Hydrobiologia 180: 109–114.
de Eguileor, M., R. Valvassori, G. Lanzavecchia & S. Giorgi, 1990. Body wall muscles in the haplotaxids Haplotaxis gordioides and Pelodrilus leruthi (Annelida, Oligochaeta). Zoomorphology 110: 27–36.
Farnesi, R. M. & D. Vagnetti, 1972. Morphological investigations on the parietal musculature in Branchiobdella pentodonta Whitman at the optical and ultrastructural levels. Boll. Zool. 39: 343–350.
Ferraguti, M. & G. Lanzavecchia, 1977. Comparative electron microscopic studies of muscles and sperm cells in Branchiobdella pentodonta Whitman and Bythonomus lemani Grube (Annelida: Clitellata). Zoomorphologie 88: 19–36.
Franzen, A., 1962. Notes on the morphology and histology of Xironogiton instabila (Moore, 1893) (Fam. Branchiobdellidae) with special reference to the muscle cells. Zool. Bidr. Upps. 35: 369–383.
Gelder, S. R. & R. O. Brinkhurst, 1990. An assessment of the phylogeny of the Branchiobdellida (Annelida: Clitellata) using PAUP. Can. J. Zool. 68: 1318–1326.
Gelder, S. R., M. Ferraguti & M. A. Subchev. 1994. A description of spermatozoan ultrastructure and some anatomical characters in Branchiobdella kozarovi Subchev, 1978 (Annelida: Clitellata), and review of the spermatozoan morphology within the genus. Hydrobiologia 278 (Dev. Hydrobiol. 95): 17–26.
Gelder, S. R. & R. C. Smith, 1987. Distribution of branchiobdellids (Annelida: Clitellata) in northern Maine, U.S.A. Trans. Am. microsc. Soc. 106: 85–88.
Holt, P. C., 1986. Newly established families of the order Branchiobdellida (Annelida: Clitellata) with a synopsis of the genera. Proc. biol. Soc. Wash. 99: 676–702.
Holt, P. C., 1989. Comments on the classification of the Clitellata. Hydrobiologia 180: 7–15.
Karnowsky, M. J., 1965. A formaldehyde-glutaraldehyde fixative of high osmolality for use in electron microscopy. J. Cell Biol. 27: 137A.
Lanzavecchia, G., 1977. Morphological modulations in helical muscles (Aschelminthes and Annelida). Int. Rev. Cytol. 51: 133–186.
Lanzavecchia, G., M. de Eguileor & R. Valvassori, 1985. Superelongation in helical muscles of leeches. J. Muscle Res. Cell Motility 6: 569–584.
Lanzavecchia, G., M. de Eguileor & R. Valvassori, 1988. Muscles. In W. Westheide & C. O. Hermans (eds), The ultrastructure of Polychaeta. G. Fisher Verlag, Stuttgart, New York. Microfauna Marina 4: 71–88.
Lanzavecchia, G., R. Valvassori & M. de Eguileor, 1994. Body wall muscles in oligochaetes. Hydrobiologia (Dev. Hydrobiol. 95): 179–188.
Moore, J. P., 1895. The anatomy of Bdellodrilus illuminatus an american discodrilid. J. Morph. 10: 497–540.
Rosenbluth, J., 1965. Ultrastructural organization of obliquely striated muscle fibres in Ascaris lumbricoides. J. Cell Biol. 25: 495–515.
Sawyer, R. T., 1986. Leech Biology and Behaviour. Clarendon Press, Oxford, 1065 pp.
Schmidt, F., 1903. Die Muskulatur von Branchiobdella parasita. Z. wiss. Zool. 75: 596–705.
Valvassori, R. & M. de Eguileor, 1991. Helical muscles: models and adaptations. In G. Lanzavecchia & R. Valvassori (eds), Form and function in Zoology. Mucchi, Modena. Selected Symposia and Monographs U.Z.I. 5: 141–162.
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Valvassori, R., de Eguileor, M., Lanzavecchia, G. et al. Comparative body wall musculature and muscle fibre ultrastructure in branchiobdellidans (Annelida: Clitellata), and their phylogenetic significance. Hydrobiologia 278, 189–199 (1994). https://doi.org/10.1007/BF00142327
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DOI: https://doi.org/10.1007/BF00142327