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Type: Article
Published: 2007-12-21
Page range: 295–312
Abstract views: 113
PDF downloaded: 3

A holistic re-interpretation of the phylogeny of the Pycnogonida Latreille, 1810 (Arthropoda)*

The Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom
Arthropoda Pycnogonida Pantopoda phylogeny sea-spiders classification

Abstract

The internal and external relationships within the Class Pycnogonida are rationalized based on the entire history of whole-animal understanding, detailed morphometrics, the fossil record, larval structure, mathematical multivariate analyses, and molecular analyses (electrophoretic protein and DNA). The pre-Jurassic fossils are placed in separate orders, with the Lower Silurian Haliestes giving the clearest indications of the form of a hypothetical “protopycnogonid”. Living forms, together with some Lower Devonian and the Jurassic fossils, are retained in the Order Pantopoda. No relationships to other Classes of the Arthropoda are yet indicated, and the concept of the Pycnogonida as a sister group to the Euarthropoda is maintained.

        The Pantopoda are divided into two suborders, isolating the Austrodecidae. The remaining taxa are classified into six superfamilies, on a consensus of overall morphological trends, larval forms, and the findings of the only previous comprehensive morphological multivariate analysis, and recent molecular analyses. The Colossendeidae, Pycnogonidae and Rhynchothoracidae are isolated within their own superfamilies. The Ammotheidae sensu lato is subdivided (within one superfamily), unfortunately leaving a number of genera incertae sedis. The Nymphonidae, Callipallenidae and Pallenopsidae are associated within another superfamily. The Jurassic fossils are placed within the Endeidae within a superfamily together with the Phoxichilidiidae, while some Lower Devonian fossils remain incertae sedis. Diagnoses are given as appropriate where possible.

References

  1. Arango, C.P. (2002) Morphological phylogenetics of the sea spiders (Arthropoda: Pycnogonida). Organisms, Diversity & Evolution, 2, 107–125.

    Arango, C.P. (2003) Molecular approach to the phylogenetics of sea spiders (Arthropoda: Pycnogonida) using partial sequences of nuclear ribosomal DNA. Molecular Phylogenetics and Evolution 28, 588–600.

    Arango, C.P. & Wheeler, W.C. (2007) Phylogeny of the sea spiders (Arthropoda: Pycnogonida) based on direct optimization of six loci and morphology. Cladistics 23, 253-293.

    Arnaud, F. (1972) Invertebres marins. XlIeme et XVeme Expeditions Antarctiques Francaises en Terre Adelie. 9. Pycnogonides. Tethys, Supplement 4, 135–156.

    Arnaud, F. & Bamber, R.N. (1987) The Biology of Pycnogonida. Advances in Marine Biology 24, 1–96.

    Bamber, R.N. (2004a) Pycnogonids (Arthropoda: Pycnogonida) from French cruises to Melanesia. Zootaxa 551, 1–27.

    Bamber R.N. (2004b) Pycnogonids (Arthropoda: Pycnogonida) from New Caledonia, Fiji and Tonga: new records and new species. In: Marshall, B. & Richer de Forges, B. (eds), Tropical Deep-Sea Benthos, Vol. 23. Mémoires du Muséum national d'Histoire naturelle, Paris, 191, 73–83.

    Bamber, R.N. (2005) Pycnogonids (Arthropoda: Pycnogonida) from the Recherche Archipelago, Esperance, Western Australia, Australia. In: Wells, F.E., Walker, D. J. & Kendrick, G. A. (eds), Proceedings of the Twelfth International Marine Biological Workshop: The Marine Flora and Fauna of Esperance, Western Australia. Western Australia Museum, Perth, pp.325–341.

    Bamber, R.N. & El Nagar, A. (2007). PycnoBase: World List of Pycnogonida. Available online at www.marinespecies.org/pycnobase/

    Bamber R.N. & Thurston M.H. (1993) Deep water pycnogonids of the Cape Verde Slope. Journal of the Marine Biological Association of the United Kingdom 73, 837–861.

    Bamber R.N. & Thurston M.H. (1995) The deep-water pycnogonids (Arthropoda: Pycnogonida) of the northeastern Atlantic Ocean. Zoological Journal of the Linnean Society 115,; 117–162.

    Bergstrom, J. (1979) Morphology of fossil arthropods as a guide to phylo-genetic relationships. In A. Gupta (Ed.) Arthropod Phylogeny. New York, van Nostrand Reinhold Co.. Chapter 1 (pp.3–56).

    Bergström, I., Sturmer, W. & Winter, G. (1980) Paiaeoisopus, Palaeopantopus and Palaeothea, Pycnogonid Arthro-pods from the Lower Devonian Hunsruck Slate, West Germany. Palaeontologische Zeitschrift 54 (1/2), 7–54.

    Bogomolova, E.V. & Malakhov, V.V. (2004) Fine morphology of larvae of sea spiders (Arthropoda: Pycnogonida) from the White Sea. Zoologia Bespozvonochnich 1, 3–28.

    Bouvier, E.L. (1923) Pycnogonides. Faune de France 7, 1–69.

    Charbonnier, S., Vannier, J. & Riou, B. (2007) New sea spiders from the Jurassic La Voulte-sur-Rhône Lagerstätte. Proceedings of the Royal Society B,

    Child, C.A. (1979) Shallow-Water Pycnogonida of the Isthmus of Panama and the Coasts of Middle America. Smithsonian Contributions to Zoology 293, i-v + 86 pp.

    Dohrn, A. (1881) Die Pantopoden des Golfes von Neapel und der angrenzenden Meeresabschnitte. Monographie der Fauna und Flora des Golfes von Neapel 3, 1–252, Plates I–XVIII.

    Dunlop J.A. & Arango, C.P. (2004) Pycnogonid affinities: a review. Journal of Zoooological Systematics and Evolutionary Research 43, 8–21.

    Fahrenbach, W.H. (1994) Microscopic anatomy of Pycnogonida: I. Cuticle, epidermis, and muscle. Journal of Morphology 222, 33–48.

    Fahrenbach, W.H. & Arango, C.P. (2007) Microscopic anatomy of Pycnogonida: II. Digestive system. III. Excretory system. Journal of Morphology 268, 917–935.

    Fry, W.G. (1978) A classification within the pycnogonids. In, Sea Spiders (Pycnogonida). Zoological Journal of the Linnean Society of London 63 (1+ 2), 35–58.

    Fry, W.G. & Hedgpeth, J.W. (1969) Pycnogonida, 1. Colossendeidae, Pycnogonidae, Endeidae, Ammotheidae. Fauna of the Ross Sea, 7. Memoirs of the New Zealand Oceanographic Institute 49, 1–139.

    de la Fuente, J.A. (1978) Consideraciones sobre filogenia y taxonomica de los artropodos. Boletin de la Asociacion Espanol di Entomologia 2, 33–40.

    Giribet, G., Edgecombe, G.D. & Wheeler, W.C. (2001). Arthropod phylogeny based on eight molecular loci and morphology. Nature 413, 157–161.

    Green, C.R. (1981) A variation of the smooth septate junction in sea-spiders Ammothea clausi (Pycnogonida). Tissue and Cell 13, 189–195.

    Hedgpeth, J.W. (1947) On the evolutionary significance of the Pycnogonida. Smithsonian Miscellaneous Collections 106 (18), 1–54.

    Hedgpeth, J.W. (1982) Pycnogonida. In S. P. Parker, Synopsis and Classification of Living Organisms, 2, 169–173. New York: McGraw-Hill.

    Jager, M., Murienne, J., Clabaut, C., Deutsch, J., Le Guyader, H. & Manuel, M. (2006) Homology of arthropod anterior appendages revealed by Hox gene expression in a sea spider. Nature 441, 506–508.

    Linné, C. von (1751) Philosophia Botanica , in qua explicantur fundamenta botanica, cum definitionibus partium, exemplis terminorum, observationibus rariorum, adjectis figuris aeneis. Apud Godofr. Kieserwetter, Stockholm. 362 pp.

    Manuel, M., Jager, M., Murienne, J., Clabaut, C. & Le Guyader (2006) Hox genes in sea spiders (Pycnogonida) and the homology of arthropod head segments. Development Genes and Evolution 216, 481–491.

    Maxmen, A., Browne, W.E., Martindale, M.Q. & Giribet, G. (2005) Neuroanatomy of sea spiders implies an appendicular origin of the proterocerebral segment. Nature 437, 1144–1148.

    Mayr, E. (1969) Principles of Systematic Zoology. McGraw-Hill, New York.

    Miyazaki, K. (2004) On the position of genital pores in a sea spider, Austrodecus tubiferum (Pycnogonida: Austrodecidae). Publications of the Seto Marine Biology Laboratory 40, 107–111.

    Munilla T. (1999) Evolución y filogenia de los picnogónidos. Boletin de la Sociedad Entomológica Aragonesa 26, 273–279.

    Munilla, T, & De Haro, A. (1981) An Electrophoretical and Immunological Study of Pycnogonida, with Phylogenetic Considerations. Bijdragen tot de Dierkunde [Contributions to Zoology-Amsterdam] 51 (2), 191–198.

    Pipe, A.R. (1982) Epizoites on Marine Invertebrates: With Particular Reference to those Associated with the Pycnogonid Phoxichilidium tubulariae Lebour, the Amphipod Caprella linearis (L) and the Decapod Corystes cassivelaunus (Pennant). Chemical Ecology 1 (1), 61–74.

    Podsiadlowski, L. & Braband, A. (2006) The complete mitochondrial genome of the sea spider Nymphon gracile (Arthropoda: Pycnogonida). BMC Genomics 7, 284, 13pp.

    Poschmann, M. & Dunlop, J.A. (2005) A new sea spider (Arthropoda: Pycnogonida) with a flagelliform telson from the Lower Devonian Hunsrück slate, Germany. Palaeontology 49, 983–989.

    Sars, G.O. (1891) Pycnogonidea. Norwegian North-Atlantic Expedition, 1876-1878, 6 (Zool. 20), 1–163; Plates I–XV.

    Siveter, D.J., Sutton, M.D., Briggs, D.E. G. & Siveter, D.J. (2004) A Silurian sea spider. Nature 431, 378–380.

    Stock J.H. (1994) Indo-West Pacific Pycnogonida collected by some major oceanographic expeditions. Beaufortia 44 (3), 17–77.

    Waloszek, D. & Dunlop, J.A. (2002) A larval sea spider (Arthropoda: Pycnogonida) from the Upper Cambrian ‘Orsten’ of Sweden, and the phylogenetic position of the pycnogonids. Palaeontology 45, 421–446.