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New records of solitary ascidians on artificial structures in Singapore waters

Published online by Cambridge University Press:  06 August 2013

Serina Siew-Chen Lee ,
Serena Lay-Ming Teo  and
Gretchen Lambert
Serina Siew-Chen Lee
Affiliation:
Tropical Marine Science Institute, National University of Singapore, 18 Kent Ridge Road, Singapore 119227
Serena Lay-Ming Teo*
Affiliation:
Tropical Marine Science Institute, National University of Singapore, 18 Kent Ridge Road, Singapore 119227
Gretchen Lambert
Affiliation:
University of Washington Friday Harbor Laboratories, Seattle, WA 98177
*
Correspondence should be addressed to: S. Teo, Tropical Marine Science Institute, National University of Singapore, 18 Kent Ridge Road, Singapore119227 email: tmsteolm@nus.edu.sg
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Abstract

Sixteen species of solitary ascidians were identified from subtidal marine fouling communities present on navigational buoys, jetty pilings, floating pontoons and nettings around the coastal waters of Singapore. Of these, twelve are new records: Ascidia gemmata, Phallusia arabica, Phallusia nigra, Rhodosoma turcicum, Rhopalaea crassa, Polycarpa argentata, Polycarpa aurita, Polycarpa captiosa, Polycarpa olitoria?, Styela canopus, Pyura curvigona and Herdmania pallida. The other four species include Ascidia sydneiensis, Phallusia philippinensis, Polycarpa papillata and Microcosmus exasperatus. A detailed morphological comparison of Phallusia nigra and P. philippinensis is included because these two species have been frequently confused, resulting in a significant under-reporting of the latter in the literature.

Keywords

foulingascidiansAscidiaceabiodiversitySingaporenon-indigenousTunicata
Type
Research Article
Information
Marine Biodiversity Records , Volume 6 , 2013 , e93
Copyright
Copyright © Marine Biological Association of the United Kingdom 2013 

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References

REFERENCES

Abbott, D.P., Newberry, A.T. and Morris, K.M. (1997) Reef and shore fauna of Hawaii. 6B: Ascidians (Urochordata). Honolulu: Bishop Museum Press, 64 pp.Google Scholar
Bonnet, N.Y.K. and Rocha, R.M. (2011) The Ascidiidae (Ascidiacea: Tunicata) of coastal Brazil. Zoological Studies 50, 809–825.Google Scholar
Bruno, J.F. and Selig, E.R. (2007) Regional decline of coral cover in the Indo-Pacific: timing, extent, and subregional comparisons. PLoS ONE 2, e711. doi:10.1371/journal.pone.0000711.Google Scholar
Carlton, J.T. (1996) Biological invasions and cryptogenic species. Ecology 77, 1653–1655.Google Scholar
Çinar, M.E., Bilecenoglu, M., Öztürk, B. and Can, A. (2006) New records of alien species on the Levantine coast of Turkey. Aquatic Invasions 1, 84–90.CrossRefGoogle Scholar
Cole, L. and Vorontsova, M. (1998) Species of Pyuridae (Ascidiacea) from South Vietnam. Bulletin of Marine Science 62, 1–6.Google Scholar
Connell, S.D. (2001) Urban structures as marine habitats: an experimental comparison of the composition and abundance of subtidal epibiota among pilings, pontoons and rocky reefs. Marine Environmental Research 52, 115–125.Google Scholar
Coutts, A. and Forrest, B. (2007) Development and application of tools for incursion response: lessons learned from the management of the fouling pest Didemnum vexillum . Journal of Experimental Marine Biology and Ecology 342, 154–162.Google Scholar
DeFelice, R.C., Eldredge, L.G. and Carlton, J.T. (2001) Non-indigenous marine invertebrates. In Eldredge, L.G. and Smith, C.M. (eds) A guidebook of introduced marine species in Hawaii. Bishop Museum Technical Report 21, 60 pp.Google Scholar
Floerl, O., Inglis, G.J., Dey, K. and Smith, A. (2009) The importance of transport hubs in stepping stone invasions. Journal of Applied Ecology 46, 37–45.Google Scholar
Gin, K.Y.-H., Holmes, M.J., Zhang, S. and Lin, X. (2006) Phytoplankton structure in the tropical port waters of Singapore. In Wolanski, E. (ed.) The environment in Asia Pacific harbours. Berlin/Heidelberg: Springer-Verlag, pp. 347–375.Google Scholar
Glasby, T.M., Connell, S.D., Holloway, M.G. and Hewitt, C.L. (2007) Nonindigenous biota on artificial structures: could habitat creation facilitate biological invasions? Marine Biology 151, 887–895.Google Scholar
Heller, C. (1878) Beiträge zur nähern Kenntniss der Tunicaten. Sitzbergen. Akademie der Wissenschaften in Wien 77, 83–110.Google Scholar
Herdman, W.A. (1880) Preliminary report on the Tunicata of the ‘Challenger' Expedition. Part I [Ascidiidae]. Proceedings of the Royal Society of Edinburgh 10, 458–472.Google Scholar
Herdman, W.A. (1881) Preliminary report on the Tunicata of the ‘Challenger' Expedition. Part III [Styelidae and Pyuridae]. Proceedings of the Royal Society of Edinburgh 11, 52–88.CrossRefGoogle Scholar
Herdman, W.A. (1906) Report on the Tunicata collected by Professor Herdman, at Ceylon, in 1902. Ceylon Pearl Oyster Fisheries Supplementary Report 39, 295–348.Google Scholar
Hilton, M.J. and Manning, S.S. (1995) Conversion of coastal habitats in Singapore: indications of unsustainable development. Environmental Conservation 22, 307–322.CrossRefGoogle Scholar
Hirose, E. (1999) Pigmentation and acid storage in the tunic: protective functions of the tunic cells in the tropical ascidian Phallusia nigra . Invertebrate Biology 118, 414–422.CrossRefGoogle Scholar
Hutchings, P.A., Hilliard, R.W. and Coles, S.L. (2002) Species introductions and potential for marine pest invasions into tropical marine communities, with special reference to the Indo-Pacific. Pacific Science 56, 223–233.Google Scholar
Izquierdo-Muñoz, A., Díaz-Valdés, M. and Ramos-Esplá, A.A. (2009) Recent non-indigenous ascidians in the Mediterranean Sea. Aquatic Invasions 4, 59–64.Google Scholar
Jaffar Ali, H.A. and Sivakumar, V. (2007) Occurrence and distribution of ascidians in Vizhinjam Bay (south west coast of India). Journal of Experimental Marine Biology and Ecology 342, 189–190.Google Scholar
Jaffar Ali, H.A., Sivakumar, V. and Tamilselvi, M. (2009) Distribution of alien and cryptogenic ascidians along the southern coasts of Indian Peninsula. World Journal of Fish and Marine Sciences 1, 305–312.Google Scholar
Kaluza, P., Kölzsch, A., Gastner, M.T. and Blasius, B. (2010) The complex network of global cargo ship movements. Journal of the Royal Society Interface 7, 1093–1103.Google Scholar
Kondilatos, G., Corsini-Foka, M. and Pancucci-Papadopoulou, M.-A. (2010) Occurrence of the first non-indigenous ascidian Phallusia nigra Savigny, 1816 (Tunicata: Ascidiacea) in Greek waters. Aquatic Invasions 5, 181–184.Google Scholar
Kott, P. (1972) Some sublittoral ascidians in Moreton Bay, and their seasonal occurrence. Memoirs of the Queensland Museum 16, 233–260.Google Scholar
Kott, P. (1980) Algal-bearing didemnid ascidians in the Indo-West-Pacific. Proceedings of the Linnean Society of New South Wales 105, 147–212.Google Scholar
Kott, P. (1981) The ascidians of the reef flats of Fiji. Proceedings of the Linnean Society of New South Wales 105, 147–212.Google Scholar
Kott, P. (1982) Didemnid–algal symbioses: host species in the western Pacific with notes on the symbiosis. Micronesica 18, 95–127.Google Scholar
Kott, P. (1985) The Australian Ascidiacea part 1, Phlebobranchia and Stolidobranchia. Memoirs of the Queensland Museum 23, 1–440.Google Scholar
Kott, P. (1990) The Australian Ascidiacea part 2, Aplousobranchia (1) and Supplement: Phlebobranchia and Stolidobranchia. Memoirs of the Queensland Museum 29, 1–266.Google Scholar
Kott, P. (1992) The Australian Ascidiacea part 3, Aplousobranchia (2) and Supplement 2. Memoirs of the Queensland Museum 32, 375–655.Google Scholar
Kott, P. (1995) A new colonial Styela (Ascidiacea: Stylidae) from an isolated marine habitat, Kakaban Island, East Kalimantan, Indonesia. Raffles Bulletin of Zoology 43, 469–474.Google Scholar
Kott, P. (2001) The Australian Ascidiacea part 4, Aplousobranchia (3) Didemnidae. Memoirs of the Queensland Museum 7, 1–407.Google Scholar
Kott, P. (2002a) The genus Herdmania Lahille, 1888 (Tunicata, Ascidiacea) in Australian waters. Zoological Journal of the Linnean Society 134, 359–374.Google Scholar
Kott, P. (2002b) Ascidiacea (Tunicata) from Darwin, Northern Territory, Australia. The Beagle, Records of the Museums and Art Galleries of the Northern Territory 18, 19–55.Google Scholar
Kott, P. (2003) New syntheses and new species in the Australian Ascidiacea. Journal of Natural History 37, 1611–1653.Google Scholar
Kott, P. (2004a) New and little-known species of Didemnidae (Ascidiacea, Tunicata) from Australia (part 1). Journal of Natural History 38, 731–774.Google Scholar
Kott, P. (2004b) New and little-known species of Didemnidae (Ascidiacea, Tunicata) from Australia (part 2). Journal of Natural History 38, 2455–2526.Google Scholar
Kott, P. (2005a) New and little-known species of Didemnidae (Ascidiacea, Tunicata) from Australia (part 3). Journal of Natural History 39, 2409–2479.Google Scholar
Kott, P. (2005b) Catalogue of Tunicata in Australian waters. Brisbane: Queensland Museum and Department of the Environment and Heritage, 301 pp.Google Scholar
Kott, P. (2006) Observations on non-didemnid ascidians from Australian waters (1). Journal of Natural History 40, 169–234.Google Scholar
Kott, P. (2007) New and little-known species of Didemnidae (Ascidiacea, Tunicata) from Australia (part 4). Journal of Natural History 41, 1163–1211.CrossRefGoogle Scholar
Kott, P. (2009) Taxonomic revision of Ascidiacea (Tunicata) from the upper continental slope off north-western Australia. Journal of Natural History 43, 1947–1986.CrossRefGoogle Scholar
Kott, P. and Goodbody, I. (1982) The ascidians of Hong Kong. In Morton, B.S. and Tseng, C.K. (eds) Proceedings of the First International Marine Biological Workshop: The Marine Flora and Fauna of Hong Kong and Southern China, Hong Kong, 1980. Hong Kong: Hong Kong University Press, pp. 503–554.Google Scholar
Lambert, C.C. (2000) Germ-cell warfare in ascidians: sperm from one species can interfere with the fertilization of a second species. Biological Bulletin . Marine Biological Laboratory, Woods Hole 198, 22–25.CrossRefGoogle Scholar
Lambert, G. (2002) Nonindigenous ascidians in tropical waters. Pacific Science 56, 291–298.Google Scholar
Lambert, G. (2003) Marine biodiversity of Guam: the Ascidiacea. Micronesica 35/36, 588–597.Google Scholar
Lambert, G. (2005) Ecology and natural history of the protochordates. Canadian Journal of Zoology 83, 34–50.Google Scholar
Lambert, G. (2009) Adventures of a sea squirt sleuth: unraveling the identity of Didemnum vexillum, a global ascidian invader. Aquatic Invasions 4, 5–28.CrossRefGoogle Scholar
Lambert, G. and Lambert, C.C. (1987) Spicule formation in the solitary ascidian, Herdmania momus . Journal of Morphology 192, 145–159.Google Scholar
Lengyel, N., Collie, J.S. and Valentine, P.C. (2009) The invasive colonial ascidian Didemnum vexillum on Georges Bank―ecological effects and genetic identification. Aquatic Invasions 4, 143–152.CrossRefGoogle Scholar
Lim, S.-C., de Voogd, N.J. and Tan, K.S. (2009) Fouling sponges (Porifera) on navigational buoys from Singapore waters. Raffles Bulletin of Zoology (Supplement 22), 41–58.Google Scholar
MacDonald, J.D. (1859) On the anatomical characters of three Australian species of Tunicata referable to Savigny's subgenus Caesira . Transactions of the Linnean Society of London 22, 367–371.CrossRefGoogle Scholar
Marins, F.O., Novaes, R.L.M., Rocha, R.M. and Junqueira, A.O.R. (2010) Non indigenous ascidians in port and natural environments in a tropical Brazilian bay. Zoologia 27, 213–221.CrossRefGoogle Scholar
Millar, R.H. (1975) Ascidians from the Indo-West-Pacific region in the Zoological Museum, Copenhagen (Tunicata, Ascidiacea). Steenstrupia 3, 205–336.Google Scholar
Millar, R.H. (1988) Ascidians collected during the International Indian Ocean Expedition. Journal of Natural History 22, 823–848.CrossRefGoogle Scholar
Monniot, C. (1983) Ascidies littorales de Guadeloupe II. Phlébobranches. Bulletin du Muséum d'Histoire Naturelle, Paris 5, 51–71.Google Scholar
Monniot, C. (1987a) Ascidies de Nouvelle-Calédonie I. Phlébobranches du lagon. Bulletin du Muséum d'Histoire Naturelle, Paris 9, 3–31.CrossRefGoogle Scholar
Monniot, C. (1987b) Ascidies de Nouvelle-Calédonie II. Les genres Polycarpa et Polyandrocarpa . Bulletin du Muséum d'Histoire Naturelle, Paris 9, 275–310.Google Scholar
Monniot, C. (1988) Ascidies de Nouvelle-Calédonie IV. Styelidae (suite). Bulletin du Muséum d'Histoire Naturelle, Paris 10, 163–196.CrossRefGoogle Scholar
Monniot, C. (1989) Ascidies de Nouvelle-Calédonie VI. Pyuridae et Molgulidae. Bulletin du Muséum d'Histoire Naturelle, Paris 11, 475–507.Google Scholar
Monniot, C. (1991a) Ascidies de Nouvelle-Calédonie VIII. Phlébobranches (suite). Bulletin du Muséum d'Histoire Naturelle, Paris 12, 491–515.Google Scholar
Monniot, C. (1991b) Ascidies de Nouvelle-Calédonie. X. Stolidobranches (suite). Bulletin du Muséum d'Histoire Naturelle, Paris 13, 3–37.Google Scholar
Monniot, C. (1992) Ascidies de Nouvelle-Calédonie XI. Phlébobranches et stolidobranches du plateau des Chesterfield. Bulletin du Muséum d'Histoire Naturelle, Paris 14, 3–22.Google Scholar
Monniot, C. (1997) Ascidies phlébobranches du canal du Mozambique. Zoosystema 19, 557–571.Google Scholar
Monniot, C. (2002) Stolidobranch ascidians from the tropical western Indian Ocean. Zoological Journal of the Linnean Society 135, 65–120.Google Scholar
Monniot, C. and Monniot, F. (1987) Les Ascidies de Polynesie Francaise. Mémoirs du Muséum d'Histoire Naturelle, Zoologie 136, 1–155.Google Scholar
Monniot, C., Monniot, F. and Laboute, P. (1991) Coral reef ascidians of New Caledonia. Paris: Editions de l'ORSTOM, Institut Français de Recherche Scientifique pour le Développement en Coopération, 154 pp.Google Scholar
Monniot, F. (1987) Ascidies de Nouvelle-Calédonie III. Polyclinidae du lagon. Bulletin du Muséum d'Histoire Naturelle, Paris 9, 499–535.Google Scholar
Monniot, F. (1988) Ascidies de Nouvelle-Calédonie V. Polycitoridae du lagon. Bulletin du Muséum d'Histoire Naturelle, Paris 10, 197–235.Google Scholar
Monniot, F. (1989) Ascidies de Nouvelle-Calédonie VII. Les genres Atriolum et Leptoclinides dans le lagon sud. Bulletin du Muséum d'Histoire Naturelle, Paris 11, 673–691.Google Scholar
Monniot, F. (1990) Ascidies de Nouvelle-Calédonie. IX. Le genre Trididemnum . Bulletin du Muséum d'Histoire Naturelle, Paris 12, 517–529.Google Scholar
Monniot, F. (1992) Ascidies de Nouvelle-Calédonie XII. Le genre Lissoclinum (Didemnidae) dans le lagon sud. Bulletin du Muséum d'Histoire Naturelle, Paris 14A, 565–589.Google Scholar
Monniot, F. (1993) Ascidies de Nouvelle-Calédonie XIII. Le genre Polysyncraton (Didemnidae). Bulletin du Muséum d'Histoire Naturelle, Paris 15, 3–17.Google Scholar
Monniot, F. (1994) Ascidies de Nouvelle-Calédonie XIV. Le genre Diplosoma (Didemnidae). Bulletin du Muséum d'Histoire Naturelle, Paris 16, 3–11.Google Scholar
Monniot, F. (1995) Ascidies de Nouvelle-Calédonie XV. Le genre Didemnum . Bulletin du Muséum d'Histoire Naturelle, Paris 16, 299–344.Google Scholar
Monniot, F. (2009a) A new species of Monandrocarpa (Ascidiacea, Styelidae) from Vanuatu Island (South Pacific Ocean). Zootaxa 2044, 65–68.Google Scholar
Monniot, F. (2009b) Some ascidians from Indonesian marine lakes (Raja Ampat Islands, West Papua). Zootaxa 2106, 13–40.Google Scholar
Monniot, F. (2010) Some new data on tropical western Pacific ascidians. Zootaxa 2561, 1–29.Google Scholar
Monniot, F. and Monniot, C. (1996) New collections of ascidians from the western Pacific and southeastern Asia. Micronesica 29, 133–279.Google Scholar
Monniot, F. and Monniot, C. (2001) Ascidians from the tropical western Pacific. Zoosystema 23, 201–383.Google Scholar
Monniot, F. and Monniot, C. (2006) Ascidians (Polyclinidae, Pseudodistomidae and Polycitoridae) from the western Indian Ocean. Zoosystema 28, 113–156.Google Scholar
Monniot, F. and Monniot, C. (2008) Compléments sur la diversité des ascidies (Ascidiacea, Tunicata) de l'ouest Pacifique tropical. Zoosystema 30, 799–872.Google Scholar
Nishikawa, T. (1991) The ascidians of the Japan Sea II. Publications of the Seto Marine Biological Laboratory 35, 25–170.Google Scholar
Nishikawa, T. (2002) Revision of the ascidian genus Herdmania (Urochordata: Ascidiacea) inhabiting Japanese waters. Species Diversity 7, 217–250.Google Scholar
Nobrega, R., Brega, R.N., Sole-Cava, A.M. and Russo, C.A.M. (2004) High genetic homogeneity of an intertidal marine invertebrate along 8000 km of the Atlantic coast of the Americas. Journal of Experimental Marine Biology and Ecology 303, 173–181.Google Scholar
Roberts, C.M., McClean, C.J., Veron, J.E.N., Hawkins, J.P., Allen, G.R., McAllister, D.E., Mittermeier, C.G., Schueler, F.W., Spalding, M., Wells, F., Vynne, C. and Werner, T.B. (2002) Marine biodiversity hotspots and conservation priorities for tropical reefs. Science 295, 1280–1284.Google Scholar
Rocha, R.M., Faria, S.B. and Moreno, T.R. (2005) Ascidians from Bocas del Toro, Panama. I. biodiversity. Caribbean Journal of Science 41, 600–612.Google Scholar
Rocha, R.M., Guerra-Castro, E., Lira, C., Pauls, S.M., Hernández, I., Pérez, A., Sardi, A., Pérez, J., Herrera, C., Carbonini, A.K., Caraballo, V., Salazar, D., Diaz, M.C. and Cruz-Motta, J.J. (2010) Inventory of ascidians (Tunicata, Ascidiacea ) from the National Park La Restinga, Isla Margarita, Venezuela. Biota Neotropica 10, 1–10.Google Scholar
Savigny, J.C. (1816) Recherches anatomiques sur les ascidies composées et sur les ascidies simples—système de la classe des Ascidies. Mémoires sur les Animaux sans Vertèbres 2, 1–239.Google Scholar
Shenkar, N. and Swalla, B.J. (2011) Global diversity of Ascidiacea. PloS One 6, 1–12. doi:10.1371/journal.pone.0020657.Google Scholar
Shenkar, N., Gittenberger, A., Lambert, G., Rius, M., Rocha, R.M., Swalla, B.J. and Turon, X. (2012) World Ascidiacea Database. Available from http://www.marinespecies.org/ascidiacea (accessed 5 September 2012).Google Scholar
Sluiter, C.P. (1885) Über einige einfachen Ascidien von der Insel Billiton. Natuurkundig Tijdschrift Voor Nederlandsch-Indie 45, 160–232.Google Scholar
Sluiter, C.P. (1890) Die Evertebraten aus der Sammlung des königlichen naturwissenschaftlichen Vereins in Niederländisch Indien in Batavia. Zugleich eine Skizze der Fauna des Java-Meeres mit Beschreibung der neuen Arten. Ascidiae simplices. Natuurkundig Tijdschrift Voor Nederlandsch-Indie 50, 329–348.Google Scholar
Sluiter, C.P. (1895) Tunicaten. In Semon, R. (ed.) Zoologische Forschungsreisen in Australien und den Malagischen Archipel. Denkschriften der Medicinisch-Naturwissenschaftlichen Gesellschaft zu Jena 8, 163–186.Google Scholar
Sluiter, C.P. (1904) Die Tunicaten der Siboga-Expedition. Part 1. Die socialen und holosomen Ascidien. Siboga-Expedition 56a, 1–126.Google Scholar
Sluiter, C.P. (1909) Die Tunicaten der Siboga-Expedition. II. Die merosomen Ascidien. Siboga Expedition 56b, 1–112.Google Scholar
Stimpson, W. (1855) Descriptions of some of the new marine Invertebrata from the Chinese and Japanese seas. Proceedings of the Academy of Natural Sciences of Philadelphia 7, 375–395.Google Scholar
Tamilselvi, M., Sivakumar, V., Jaffar Ali, H.A. and Thilaga, R.D. (2011) Distribution of alien tunicates (ascidians) in Tuticorin Coast, India. World Journal of Zoology 6, 164–172.Google Scholar
Thong, P., Law, N., Orlic, I., Lane, D. and Watt, F. (1995) A quantitative study of elements in the blood cells of the tropical ascidian Phallusia philippinensis using the nuclear microscope. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 104, 365–369.Google Scholar
Tokioka, T. (1942) Ascidians found on the mangrove trees in Iwayama Bay, Palao. Palao Tropical Biological Station Studies 2, 497–506.Google Scholar
Tokioka, T. (1950) Ascidians from the Palao Islands. I. Publications of the Seto Marine Biological Laboratory 1, 115–150.Google Scholar
Tokioka, T. (1952) Ascidians collected by Messers. Renzi Wada and Seizi Wada from the pearl-oyster bed in the Arafura Sea in 1940. Publications of the Seto Marine Biological Laboratory 2, 91–141.Google Scholar
Tokioka, T. (1967) On a small collection of ascidians from the vicinity of Nhatrang, Vietnam. Publications of the Seto Marine Biological Laboratory 14, 391–402.Google Scholar
Tokioka, T. (1970) Ascidians from Mindoro Islands, the Philippines. Publications of the Seto Marine Biological Laboratory 18, 75–107.Google Scholar
Tyrrell, M. and Byers, J. (2007) Do artificial substrates favor nonindigenous fouling species over native species? Journal of Experimental Marine Biology and Ecology 342, 54–60.Google Scholar
Van Name, W.G. (1918) Ascidians from the Philippines and adjacent waters. Bulletin of the United States National Museum 100, 49–174.Google Scholar
Van Name, W.G. (1945) The North and South American ascidians. Bulletin of the American Museum of Natural History 84, 1–476.Google Scholar
Vorontsova, M. and Cole, L. (1995) A new species of Pyura (Ascidiacea) from South Vietnam. Bulletin of Marine Science 56, 312–318.Google Scholar
Yeo, D.C.Y., Carlton, J.T., Teo, S.L.M. and Ng, P.K.L. (2011) An incoming flood on a cryptic stage: understanding alien crustacean invasions in Southeast Asia. In Galil, B.S., Clark, P.F. and Carlton, J.T. (eds) In the wrong place—alien marine crustaceans: distribution, biology and impacts. Invading nature—Springer Series in Invasion Ecology 6, 403–417.Google Scholar
Zheng, C. (1995) Species diversity of ascidian in the coastal China Seas. Chinese Biodiversity 3, 201–205.Google Scholar