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Morphology and biology of a new Pseudopolydora (Annelida: Spionidae) species from Brazil

Published online by Cambridge University Press:  22 July 2008

Vasily I. Radashevsky  and
Alvaro E. Migotto
Vasily I. Radashevsky*
Affiliation:
Institute of Marine Biology, Russian Academy of Sciences, Vladivostok 690041, Russia Centro de Biologia Marinha, Universidade de São Paulo, São Sebastião, SP, 11600-000, Brazil
Alvaro E. Migotto
Affiliation:
Centro de Biologia Marinha, Universidade de São Paulo, São Sebastião, SP, 11600-000, Brazil
*
Correspondence should be addressed to: Vasily I. Radashevsky, Institute of Marine Biology, Russian Academy of Sciences, Vladivostok 690041, Russia email: [email protected]
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Abstract

Adults of Pseudopolydora rosebelae sp. nov. inhabit silty tubes on muddy bottoms in shallow water in southern Brazil, states of São Paulo and Rio de Janeiro. They are rare and extremely delicate, attaining 20 mm long for 55 chaetigers. The worms are distinctive by their colourful yellow and black pigmentation on the anterior part of body and palps, prominent transverse hood on the dorsal anterior edge of chaetiger 3, and lack of coloured respiratory pigment in blood. Of 12 examined individuals, all were females. Oogenesis is intraovarian; oocytes develop from chaetigers 14–15 to chaetigers 24–36. Recently laid oocytes were about 150 μm in diameter, with embryos and developing larvae found in capsules inside female tubes in March–June. Broods comprised up to 23 capsules with 400 propagules. Capsules were joined to each other in a string and each attached by a single thin stalk to the inner wall of the tube. Larvae hatched at the 4-chaetiger stage and fed on plankton. Pelagic larvae are unique among Pseudopolydora in having large ramified mid-dorsal melanophores from chaetiger 3 onwards. Competent larvae are able to settle and metamorphose at the 15-chaetiger stage, but can remain planktonic up to 18 chaetigers. They have one pair of unpigmented ocelli and three pairs of black eyes in the prostomium, unpaired ramified mid-dorsal melanophores on chaetiger 1 and on the pygidium, ramified lateral melanophores on chaetigers 5–10, prominent yellow chromatophores in the prostomium, peristomium, on dorsal and ventral sides of chaetigers and in the pygidium. Branchiae are present on chaetigers 7–10, and gastrotrochs are arranged on chaetigers 3, 5, 7 and 12. Provisional serrated bristles are present in all notopodia, and hooks are present in neuropodia from chaetiger 8 onwards. Two pairs of provisional protonephridia are present in chaetigers 1 and 2, and adult metanephridia are present from chaetiger 4.

Keywords

morphologybiologynew speciesPseudopolydoraBrazil
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 89 , Issue 3 , May 2009 , pp. 461 - 468
Copyright
Copyright © Marine Biological Association of the United Kingdom 2008

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References

REFERENCES

Amoureux, L. (1985) Annélides benthiques récoltées à l'entrée de la lagune de la Manche-à-Eau, Guadaloupe (Antilles). Bulletin du Muséum National d'Histoire Naturelle, Paris, série 7, section A 1, 93–107.CrossRefGoogle Scholar
Blake, J.A. and Kudenov, J.D. (1978) The Spionidae (Polychaeta) from southeastern Australia and adjacent areas with a revision of the genera. Memoirs of the National Museum of Victoria 39, 171–280.CrossRefGoogle Scholar
de Haas, F., Taveau, J.-C., Boisset, N., Lambert, O., Vinogradov, S.N. and Lamy, J.N. (1996a) Three-dimensional reconstruction of the chlorocruorin of the polychaete annelid Eudistylia vancouverii. Journal of Molecular Biology 255, 140–153.CrossRefGoogle ScholarPubMed
de Haas, F., Zal, F., You, V., Lallier, F., Toulmond, A. and Lamy, J.N. (1996b) Three-dimensional reconstruction by cryoelectron microscopy of the giant hemoglobin of the polychaete worm Alvinella pompejana. Journal of Molecular Biology 264, 111–120.CrossRefGoogle ScholarPubMed
Eleftheriou, A. (1970) Notes on the polychaete Pseudopolydora pulchra (Carazzi) from British waters. Cahiers de Biologie Marine 11, 459–474.Google Scholar
Gillet, P. (1986) Contribution à l'étude des Annelides Polychètes des lagunes de la Manche-à-Eau et de Belle-Plaine (Guadeloupe). Description d'un nouveau Capitellidae: Scyphoproctus guadalupensis n. sp. Bulletin du Muséum National d'Histoire Naturelle, Paris, série B, section A 4, 803–817.CrossRefGoogle Scholar
Hutchings, P.A. and Turvey, S.P. (1984) The Spionidae of South Australia (Annelida: Polychaeta). Transactions of the Royal Society of South Australia 108, 1–20.Google Scholar
Imajima, M. and Hartman, O. (1964) The polychaetous annelids of Japan. Part II. Allan Hancock Foundation Publications, Occasional Paper 26, 236–452.Google Scholar
Lana, P.C., Santos, C.S.G., Garraffoni, A.R.S., Oliveira, V.M. and Radashevsky, V.I. (2006) Checklist of polychaete species from Paraná State (Southern Brazil). Check List 2, 30–63.CrossRefGoogle Scholar
Omena, E. and Creed, J.C. (2004) Polychaete fauna of seagrass beds (Halodule wrightii Ascherson) along the coast of Rio de Janeiro (southeast Brazil). Marine Ecology 25, 273–288.CrossRefGoogle Scholar
Radashevsky, V.I. (2005) On adult and larval morphology of Polydora cornuta Bosc, 1802 (Annelida: Spionidae). Zootaxa 1064, 1–24.CrossRefGoogle Scholar
Radashevsky, V.I. and Hsieh, H.L. (2000) Pseudopolydora (Polychaeta: Spionidae) species from Taiwan. Zoological Studies 39, 218–235.Google Scholar
Radashevsky, V.I. and Migotto, A.E. (2006) Photoreceptive organs in larvae of Spionidae (Annelida) and Sipuncula. Journal of Zoology, London 268, 335–340.CrossRefGoogle Scholar
Radashevsky, V.I. and Nogueira, J.M.M. (2003) Life history, morphology and distribution of Dipolydora armata (Polychaeta: Spionidae). Journal of the Marine Biological Association of the United Kingdom 83, 375–384.CrossRefGoogle Scholar
Rullier, F. (1963) Développement de Polydora (Carazzia) antennata Clap. var. pulchra Carazzi. Cahiers de Biologie Marine 4, 233–250.Google Scholar
Santos, S.L. and Simon, J.L. (1980) Response of soft-bottom benthos to annual catastrophic disturbance in a south Florida estuary. Marine Ecology Progress Series 3, 347–355.CrossRefGoogle Scholar
Sheridan, P.F. (1997) Benthos of adjacent mangrove, seagrass and non-vegetated habitats in Rookery Bay, Florida, U.S.A. Estuarine, Coastal and Marine Science 44, 455–469.CrossRefGoogle Scholar