On the morphology of the genus Flota Hartman, 1967 and corroboration of family status of Flotidae Buzhinskaja, 1996 (Polychaeta)

G.N. Buzhinskaja

Abstract. Comparative description of the genus Flota is given, including additional data on the anatomical structure of the digestive tract, female gonad, ventral nervous cord, as well as refining of external morphology. The organization of Flota is compared with that of representatives of other families of polychaetes. The arguments for family status of Flotidae are based on features of structure, differentiating Flota from all other polychaetes (triramous non-grooved palps, enormous ventro-lateral pharyngeal organ of peculiar structure and ventral nervous cord with numerous ganglia on connectives). Apart from being differentiated by these characters Flota differs from Flabelligeridae and close families in the structure of the head, digestive tract, parapodia and pygidium, presence of buccal tentacles and surface arrangement of the ventral nervous cord. Discovery of additional specimens of this genus and other representatives of Flotidae, further study of their anatomy and also investigation of the larval development will allow establishing the place of this family among polychaetes.

Zoosystematica Rossica, 2006, 15(1): 7–17 ▪ Published in print 1 December 2006

https://doi.org/10.31610/zsr/2006.15.1.7 ▪ Open full article

References

Beklemishew, W.N. 1952. Osnovy sravnitelnoy anatomii bespozvonochnykh [Fundamentals of the comparative anatomy of the invertebrates], Moskva: Sovetskaya Nauka. 698 p. (In Russian).

Buzhinskaja, G.N. 1977. Flota vitjasi sp.n., a new deepwater pelagic species of the family Fauveliopsidae (Polychaeta, Annelida). Issled. Fauny Morey, 20(28): 9-12. (In Russian).

Buzhinskaja, G.N. 1996. Unique characters of structure of some deepwater pelagic polychaetes. Dokl. Akad. Nauk SSSR, 347(1): 133-135. (In Russian).

Cazaux, C. 1982. Développement larvaire de l’ampharetidae lagunaire Alkmaria romijni Horst. 1919. Cah. Biol. mar., 23: 143-157.

Crisp, M. 1977. The development of the serpulid Pomatoleios krausii (Annelida, Polychaeta). J. Zool. London, 183:147-160. https://doi.org/10.1111/j.1469-7998.1977.tb04178.x

Dales, R.Ph. 1962. The polychaete stomodeum and the inter-relationships of the families of Polychaeta. Proc. zool. Soc. London, 139: 389-428. https://doi.org/10.1111/j.1469-7998.1962.tb01837.x

Dales, R.Ph. 1963. Annelids. London: HutchinsonUniversity library. 200 p.

Desbruyères, D. & Laubier, U. 1991. Systematics, phylogeny, ecology and distribution of the Alvinellidae (Polychaeta) from deep-sea hydrothermal vents. Ophelia, 5(suppl.): 31-45.

Djakonov, A.M. 1913. Anatomisch-histologische Untersuchungen des Darmes von Amphicteis gunneri Sars (Polychaeta, Ampharetidae). Tr. imp. Sankt-Peterburg. Obshch. Estestvoisp., 42(4): 297-346. (In Russian).

Eckelbarger, K.J. 1974. Population biology and larval development of the terebellid polychaete Nicolea zostericola. Mar. Biol., 27: 101-113.

Fauchald, K. 1977. The polychaete worms. Definitions and keys to the orders, families and genera. Natur. Hist. Mus. Los Angeles Cty Sci. Ser., 28: 1-188.

Fauchald, K. & Rouse, G. 1997. Polychaete systematics: Past and present. Zool. Scripta, 26(2): 71-138. https://doi.org/10.1111/j.1463-6409.1997.tb00411.x

Fisher, W.S. 1946. Echiuroid worms of the North PacificOcean. Proc. U.S. nat. Mus., 96: 215-292. https://doi.org/10.5479/si.00963801.96-3198.215

Fournier, J.A. & Petersen, M.E. 1991. Cossura longicirrata: Rederscription and distribution, with notes on reproductive biology and a comparison of described species of Cossura (Polychaeta: Cossuridae). Ophelia, 5(suppl.): 63-80.

George, J.D. & Hartmann-Schröder, G. 1985. Polychaetes: British Amphinomida, Spintherida and Eunicida. Synopses of the British Fauna (New Series), 32. Linnean Soc. London. 221 p.

Gustafson, G. 1930. Anatomische Studien über die Polychäten-Familien Amphinomidae und Euphrosynidae. Zool. Bidr. Uppsala, 12: 305-471.

Hartman, O. 1955. Endemism in the north Pacific Ocean, with emphasis on the distribution of new or little known species. In: Essays in the Natural Sciences in honour of Captain Allan Hancock: 39-60. Los Angeles: University of the Southern California Press.

Hartman, O. 1959. Catalogue of the polychaetous annelids of the world. Pt. 1. Los Angeles: University of the Southern California Press. 353 p.

Hartman, O. 1967. Polychaetous annelids collected by the USNS Eltanin and Staten Island cruises chiefly from Antarctic seas. Allan Hancock Monogr. mar. Biol., 2: 1-387.

Hartman, O. 1971. Abyssal polychaetous annelids from the Mozambique Basin off Southeast Africa, with a compendium of abyssal polychaetous annelids from world-wide areas. J. Fish. Res. Bd. Canada, 28(10): 1407-1428. https://doi.org/10.1139/f71-219

Haswell, W.A. 1892. Observations on the Chloraemidae with special reference to the certain Australian forms. Proc. Linn. Soc.N.S. Wales., 6(ser.2): 329-356. https://doi.org/10.5962/bhl.part.29896

Heath, H. 1930. A connecting link between the Annelida and the Echiuroidea (Gephyrea armata). J. Morphol., 49: 223-249. https://doi.org/10.1002/jmor.1050490106

Heimler, W. 1978. Über Bau und Function der Larvaltentakel bei Lanice conchilega (Polychaeta, Terebellomorpha). Zool. Jb. Anat. Ont. Tiere, 99: 59-63.

Heimler, W. 1983. Untersuchungen zur Larvalentwicklungvon Lanice conchilega (Pallas, 1766) (Polychaeta, Terebellomorpha). Teil III: Bau und Structur der Aulophore-Larve. Zool. Jb. Anat. Ont. Tiere, 110: 411-479.

Holthe, T. 1986. Evolution, systematics, and distribution of the Polychaeta Terebellomorpha, with catalogue of the taxa and a bibliography. Gunneria, 55: 1-236.

Kirtley, D.W. 1994. A review and taxonomic revision of the family Sabellariidae Johnston, 1865 (Annelida, Polychaeta). Sabecon Press, 1(sci. ser.). 223 p.

Korn, H. 1960. Ergänzende Beobachtungen zur Structur der Larve von Echiurus abyssalis Skor. Z. wiss. Zool., 164: 197-237.

Lambert, R., Retiere, C. & Lagadeuc, Y. 1996. Metamorphosis of Pectinaria koreni (Annelida: Polychaeta) and recruitment of an isolated population in the EnglishChannel. J. mar. Biol. Assoc. U.K., 76: 23-36. https://doi.org/10.1017/S002531540002899X

McIntosh, W.C. 1915. A monograph of the British Annelids. Pt. 1. Polychaeta, Opheliidae to Amphictenidae. London: Ray Soc. 368 p.

Meyer, E. 1887. Studien über den Körperbau der Anneliden. Mitt. Zool. Stn Neapel, 7: 592-741.

Meyer, E. 1888. Studien über den Körperbau der Anneliden. Mitt. Zool. Stn Neapel, 8: 462-658.

Nilsson, D. 1912. Beiträge zur Kenntnis des Nervensystems der Polychaeten. Zool. Bidr. Uppsala, 1: 85-161.

Orrhage, L. 1978. On the structure and evolution of the anterior end of the Sabellariidae (Polychaeta, Sedentaria). With some remarks on the general organization of the polychaete brain. Zool. Jb. Anat., 100: 343-374.

Pettibone, M.H. 1982. Annelida. In: Synopses and classification of living organisms, 2: 1-43. McGraw-Hill, New York.

Pettibone, M.H. 1979. Redersciption of Bruunilla natalensis Hartman (Polychaeta: Polynoidae) originally referred to Fauveliopsidae. Proc. biol. Soc. Wash., 92(2): 384-388.

Pruvot, G. 1885. Recherches anatomiques et morphologiques sur la système nerveux des Annélides Polychètes. Arch. Zool. exp. gen. Paris(sér. 2), 3: 211-336.

Purschke, G. & Tzetlin, A.B. 1996. Dorsolateral ciliaryfolds in the polychaete foregut: structure, prevalence and phylogenetic significance. Acta zool., 77: 33-49. https://doi.org/10.1111/j.1463-6395.1996.tb01251.x

Quatrefages, M.A. 1849. Types inferieurs de l’embranchement des Annelés. Mémoire sur la familie des Chlorèmiens, Chloraemea, Nob. Ann. Sci. natur. (sér. 3), 12: 277-306.

Riser, N.W. 1987. A new interstitial polychaete (Family Fauveliopsidae) from the shallow subtidal of Zealand with observations of related species. Bull. biol. Soc. Washington, 7: 211-216.

Robbins, D.E. 1965. The biology and morphology of the pelagic annelid Poeobius meseres Heath. J. Zool., 146: 197-212. https://doi.org/10.1111/j.1469-7998.1965.tb05209.x

Rouse, G.W. & Fauchald, K. 1997. Cladistics and polychaetes. Zool. Scripta, 26(2): 139-204. https://doi.org/10.1111/j.1463-6409.1997.tb00412.x

Rouse, G.W. & Pleijel, F. 2001. Polychaetes. New York: Oxford University press. 354 p.

Salensky, W. 1882. Études sur le développement des Annélides. Arch. Biol. Paris, 3: 345-378.

Schlieper, C. 1927. Stylarioides plumosus, eine monographische Darstellung. Z. Morphol. Ökol. Tiere, 7: 320-383. https://doi.org/10.1007/BF00407491

Sentz-Braconnet, E. 1964. Sur le développement des serpulidae Hydroides norvegica (Gunnerus) et Serpula concharum Langerhans. Cah. Biol. mar., 5: 385-389.

Spies, R.B. 1975. Structure and function of the head in flabelligerid polychaetes. J. Morphol., 177: 187-208. https://doi.org/10.1002/jmor.1051470206

Støp-Bowitz, C. 1987. A new genus and species (Yndolacia lopadorrhynchoides) of pelagic polychaetes. Representative of a new family, Yndolaciidae. Bull. biol. Soc. Washington, 7: 128-130.

Tzetlin, A.B. 1994. Fine morphology of the feeding apparatus of Cossura sp. (Polychaeta, Cossuridae) from the White Sea. Mém. Mus. nat. Hist. natur., 162: 137-143.

Uschakov, P.V. 1972. Polychaetes of the suborder Phyllodociformia of the Polar Basin and the North-Western part of the Pacific (Families Phyllodocidae, Alciopidae, Tomopteridae, Typhloscolecidae, and Lacydoniidae). Fauna SSSR (n. ser.), 102: 1-272. (In Russian).

Uschakov, P.V. 1985. About the classification of the Polychaeta. Issled. Fauny Morey, 34(42): 5-9. (In Russian).

Wilfert, M. 1975. Nachweis eines Pharynx bulbus bei Polychaeten aus der Familie Flabelligeridae. Helgoländer wiss. Meeresunters., 27: 313-323. https://doi.org/10.1007/BF01611699

Wilson, D.P. 1929. The larvae of the british Sabellarians. J. mar. Biol. Assoc. U. K., 16: 221-268. https://doi.org/10.1017/S0025315400029787

Zhadan, A.E., Tzetlin, A.B. & Safronova, M.A. 2000. Anatomy of some representatives from the family Alvinellidae (Polychaeta, Terebellidae) from the Pacific hydrothermal habitats. Zool. Zh., 39(2): 141-160. (In Russian).

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