Skip to main content Skip to main navigation menu Skip to site footer
Responsive image
Issue: Vol. 1549 No. 1: 15 Aug. 2007
Type: Article
Published: 2007-08-15
DOI: 10.11646/zootaxa.1549.1.2
Page range: 29–42
Abstract views: 62
PDF downloaded: 6

Hypselodoris jacksoni, a new species from the south-western Pacific Ocean (Nudibranchia: Chromodorididae), with a discussion on intraspecific variation  in mantle glands in Chromodoris willani Rudman, 1982

Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0202, USA
Museum and Art Gallery of the Northern Territory, GPO Box 4646, Darwin, Northern Territory 0801, Australia
Mollusca mantle glands nudibranch Opisthobranchia Gastropoda

Abstract

A new species of Hypselodoris (Chromodorididae) is described from the subtropical and temperate south-western Pacific Ocean (eastern Australia, Lord Howe Island, Norfolk Island). The colouration of Hypselodoris jacksoni sp. nov. is distinctive, though highly variable intraspecifically. Hypselodoris jacksoni belongs to the Indo-Pacific Hypselodoris clade (for which the key synapomorphy is a minute receptaculum seminis) and, based on comparisons of internal and external morphology, appears to belong to a subclade characterised by an elevated branchial sheath, probably most closely related to H. krakotoa Gosliner & Johnson, 1999, H. reidi Gosliner & Johnson, 1999 and H. regina Ev. & Er. Marcus, 1970. Intraspecific variation in the arrangement of mantle glands in H. jacksoni prompted a preand post-fixation comparison of mantle glands in another chromodorid, Chromodoris willani Rudman, 1982. These results indicate these structures can vary significantly within a population (and thus species), and it is likely that too much emphasis has been placed on mantle glands for separating species in the recent literature.

References

  1. Alejandrino, A. & Valdés, A. (2006) Phylogeny and biogeography of the Atlantic and eastern Pacific Hypselodoris Stimpson, 1855 (Nudibranchia, Chromodorididae) with the description of a new species from the Caribbean Sea. Journal of Molluscan Studies, 72, 189–198.

    Bergh, L. S. R. (1891) Die cryptobranchiaten Dorididen. Zoologische Jahrbücher, 6, 103–144.

    Bergh, R. (1877) Malacologische Untersuchungen 6. In: C. Semper (Ed), Reisen im Archipel Philippinen. Wissenschaftliche Resultate, pp. 247–285, pls 232–235.

    Cobb, G. & Willan, R. C. (2006) Undersea jewels: a colour guide to nudibranchs. Canberra: Australian Biological Resources Study, 310 pp.

    Coleman, N. (1981) A field guide to the marine life of south-eastern Australia. Adelaide: Rigby Publishers Limited, 167 pp.

    Coleman, N. (2001) 1001 Nudibranchs. Springwood: Neville Coleman's Underwater Geographic Pty, Ltd, 144 pp.

    Eliot, C. N. E. (1904) On some nudibranchs from East Africa and Zanzibar. Part 3. Proceedings of the Zoological Society of London, 2, 354–385.

    Ellis, W. (2001) Sunshine coast nudibranchs. Nudibranch News, 3, 30–33.

    Faulkner, D. J. & Ghiselin, M. (1983) Chemical defense and evolutionary ecology of dorid nudibranchs and some other opisthobranch gastropods. Marine Ecology Progress Series, 13, 295–301.

    Garcia-Gomez, J. C., Cimino, G. & Medina, A. (1990) Studies on the defensive behaviour of Hypselodoris species (Gastropoda: Nudibranchia): ultrastructure and chemical analysis of mantle dermal formations (MDFs). Marine Biology, 106, 245–250.

    Garcia-Gomez, J. C., Medina, A. & Covenas, R. (1991) Study of the anatomy and histology of the mantle dermal formations (MDF's) of Chromodoris and Hypselodoris (Opisthobranchia: Chromodorididae). Malacologia, 32, 233–240.

    Gosliner, T. M. (1996) Phylogeny of Ceratosoma (Nudibranchia: Chromodorididae), with descriptions of two new species. Proceedings of the California Academy of Sciences, 49, 115–126.

    Gosliner, T. M. & Behrens, D. W. (1998) Five new species of Chromodoris (Mollusca: Nudibranchia: Chromodorididae) from the tropical Indo-Pacific Ocean. Proceedings of the California Academy of Sciences, 50, 139–165.

    Gosliner, T. M. & Johnson, R. F. (1999) Phylogeny of Hypselodoris (Nudibranchia: Chromodorididae) with a review of the monophyletic clade of Indo-Pacific species, including descriptions of twelve new species. Zoological Journal of the Linnean Society, 125, 1–114.

    Johnson, R. F. & Gosliner, T. M. (1998) The genus Pectenodoris (Nudibranchia: Chromodorididae) from the Indo-Pacific, with the description of a new species. Proceedings of the California Academy of Sciences, 50, 295–306.

    Johnson, R. F. & Valdés, A. (2001) The Hypselodoris infucata, H. obscura and H. saintvincentius species complex (Mollusca, Nudibranchia, Chromodorididae), with remarks on the genus Brachychlanis Ehrenberg, 1831. Journal of Natural History, 35, 1371–1398.

    Marcus, Ev. & Marcus, Er. (1970) Some gastropods from Madagascar and West Mexico. Malacologia, 19, 181–223.

    Marshall, J. G. & Willan, R. C. (1999) Nudibranchs of Heron Island, Great Barrier Reef: a Survey of the Opisthobranchia (Sea Slugs) of Heron and Wistari Reefs. Leiden: Backhuys Publishers, 257 pp.

    Odhner, N. H. J. (1957) Chromodoris contra Glossodoris. A systematic-nomenclatorial controversy. Proceedings of the Malacological Society of London, 32, 250–253.

    Pruvot-Fol, A. (1934) Les opisthobranches de Quoy et Gaimard. Archives du Muséum d'histoire naturelle de Lyon, 11, 13–92, pl. 11.

    Quoy, J. & Gaimard, J. (1832) Voyages de Découvertes de “l’Astrolabe” Exécuté par ordre du Roi, Pendant les Années 1826–1827–1828–1829, sous the Commandement de M. J. Dumont d’Urville (Vol. 2). Paris: Tastu, 320 pp.

    Quoy, J. & Gaimard, J. (1833) Voyages de Découvertes de “l’Astrolabe” Exécuté par ordre du Roi, Pendant les Années 1826–1827–1828–1829, sous the Commandement de M. J. Dumont d’Urville (Atlas of plates). Paris: Tastu, 26 pls.

    Risbec, J. (1928) Contribution a l'étude des nudibranches Néo-Calédoniens. Faune des Colonies Françaises, 2, 1–328.

    Rudman, W. B. (1977) Chromodorid opisthobranch Mollusca from East Africa and the tropical West Pacific. Zoological Journal of the Linnean Society, 61, 351–397.

    Rudman, W. B. (1982) The Chromodorididae (Opisthobranchia: Mollusca) of the Indo-west Pacific: Chromodoris quadricolor, C. lineolata and Hypselodoris nigrolineata colour group. Zoological Journal of the Linnean Society, 76, 183–241.

    Rudman, W. B. (1984) The Chromodorididae (Opisthobranchia: Mollusca) of the Indo-West Pacific: a review of the genera. Zoological Journal of the Linnean Society, 81, 115–273.

    Rudman, W.B. (2000) Hypselodoris krakatoa Gosliner & Johnson, 1999 and related messages. [In] Sea Slug Forum. Australian Museum, Sydney. Available from: http://www.seaslugforum.net/factsheet.cfm?base=hypskrak (Accessed 3 July 2007).

    Rudman, W.B. (2002) Hypselodoris reidi Gosliner & Johnson, 1999 and related messages. [In] Sea Slug Forum. Australian Museum, Sydney. Available from: http://www.seaslugforum.net/factsheet.cfm?base=hypsreid (Accessed 3 July 2007).

    Schrödl, M. & Millen, S. V. (2001) Revision of the nudibranch gastropod genus Tyrinna Bergh, 1898 (Doridoidea: Chromodorididae). Journal of Natural History, 35, 1143–1171.

    Stimpson, W. (1855) Descriptions of some new marine invertebrates. Proceedings of the Academy of Natural Sciences, Philadelphia, 7, 385–395.

    Thompson, T. E. (1976) Biology of opisthobranch molluscs. (Vol. 1). London: The Ray Society, 207 pp.

    Valdés, A. & Héros, V. (1998) The types of recent and certain fossil opisthobranch molluscs in the Muséum national d'Histoire naturelle. Zoosystema, 20, 695–742.

    Wägele, H. (1998) Histological investigation of some organs and specialised cellular structures in Opisthobranchia (Gastropoda) with the potential to yield phylogenetically significant characters. Zoologischer Anzeiger, 236, 119–131.

    Wägele, H., Ballesteros, M. & Avila, C. (2006) Defensive glandular structures in opisthobranch molluscs — from histology to ecology. Oceanography and Marine Biology: an Annual Review, 44, 197–276.

    Wilson, N. G. (2002) Egg masses of chromodorid nudibranchs (Mollusca: Gastropoda: Opisthobranchia). Malacologia, 44, 289–305.

    Wilson, N. G. & Healy, J. M. (2002) Is Cadlinella ornatissima a chromodorid? Sperm ultrastructure in an enigmatic nudibranch (Opisthobranchia, Mollusca). Invertebrate Reproduction and Development, 42, 179–188.

    Wilson, N. G. & Lee, M. S. Y. (2005) Molecular phylogeny of Chromodoris (Mollusca, Nudibranchia) and the identification of a planar spawning clade. Molecular Phylogenetics and Evolution, 36, 722–727.

    Yonow, N. (1994) Opisthobranchs from the Maldive Islands, including descriptions of seven new species (Mollusca: Gastropoda). Revue Française d' Aquariologie et de Herpétologie, 20, 97–130.

    Yonow, N. (2001) Results of the Rumphius Biohistorical Expedition to Ambon (1990). Part II. Doridacea of the families Chromodorididae and Hexabranchidae (Mollusca, Gastropoda, Opisthobranchia, Nudibranchia), including additional Moluccan material. Zoologische Mededelingen, Leiden, 75, 1–50.