Ascidia sydneiensis Stimpson, 1855

Lambert, Gretchen, Lee, Serina Siew-Chen & Teo, Serena Lay-Ming, 2021, Ascidians collected during the 2013 Singapore Strait International Marine Biodiversity Workshop, Zootaxa 4933 (1), pp. 1-38 : 14

publication ID	https://doi.org/10.11646/zootaxa.4933.1.1
publication LSID	lsid:zoobank.org:pub:56476487-ABC9-4C1C-A73F-D39E55DB9005
DOI	https://doi.org/10.5281/zenodo.4559613
persistent identifier	https://treatment.plazi.org/id/BB593765-FFA4-E73C-FF6C-FF73FB26FCD6
treatment provided by	Plazi (2021-02-18 07:13:21, last updated 2024-11-29 10:16:15)
scientific name	Ascidia sydneiensis Stimpson, 1855
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Fig. 5A, B View FIGURE 5

Descending limb of intestine very distended. Musculature the typical dense short horizontal fibers around the perimeter of the right side.

#1228A, small specimen on a bivalve, 1 cm long out of the tunic.

#2591, juvenile, contracted ( Fig. 5A View FIGURE 5 ), about 1.5 cm in length; tunic covered with short clear tubercles ( Fig. 5B View FIGURE 5 ) as described by Tokioka (1953), which usually disappear in older larger specimens with thick tunic. Parasitic copepod in branchial sac (not visible in Fig. 5A View FIGURE 5 ), its length with appendages 3 mm.

Widely distributed and common throughout warm waters of the west Pacific: Hong Kong, Indonesia, Philippines, Singapore, French Polynesia, Mozambique, New Caledonia, Palau, Australia, Japan, Senegal, Panama (Caribbean and Pacific), Guadeloupe, Martinique, Brazil. Considered introduced in Brazil, the Caribbean and other disjunct locations such as Hawaii, Guam and Galápagos.

Detailed references with illustrations: Van Name (1945), Millar (1956, 1975), Kott & Goodbody (1982), Kott (1985), Monniot C. (1983a, 1987a), Monniot C. & Monniot F. (1987), Abbott et al. (1997), Bonnet & Rocha (2011a, 2011b), Bonnet et al. (2013), Lee et al. (2013), Monniot F. (2018a). Other references: Tokioka (1953, 1970), Monniot C. et al. (1985), Monniot C. (1997), Rocha & Nasser (1998), Monniot F. & Monniot C. (2001), Rocha & Costa (2005), Rocha et al. (2005), Bonnet et al. (2013), Lee et al. (2016), Lambert (2003, 2019),

References

Abbott, D. P., Newberry, A. T. & Morris, K. M. (1997) Reef and Shore Fauna of Hawaii. 6 B: Ascidians (Urochordata). Bishop Museum Press, Honolulu, 64 pp.

Bonnet, N. Y. K. & Rocha, R. M. (2011 a) The family Ascidiidae Herdman (Tunicata: Ascidiacea) in Bocas del Toro, Panama. Description of six new species. Zootaxa, 2864 (1), 1 - 33. https: // doi. org / 10.11646 / zootaxa. 2864.1.1

Bonnet, N. Y. K. & Rocha, R. M. (2011 b) The Ascidiidae (Ascidiacea: Tunicata) of coastal Brazil. Zoological Studies, 50, 809 - 825.

Bonnet, N. Y. K., Rocha, R. M. & Carman, M. R. (2013) Ascidiidae Herdman, 1882 (Tunicata: Ascidiacea) on the Pacific coast of Panama. Zootaxa, 3691 (3), 351 - 364. https: // doi. org / 10.11646 / zootaxa. 3691.3.4

Kott, P. & Goodbody, I. (1982) The ascidians of Hong Kong. In: Morton, B. S. & 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. University Press, Hong Kong, pp. 503 - 554.

Kott, P. (1985) The Australian Ascidiacea part 1, Phlebobranchia and Stolidobranchia. Memoirs of the Queensland Museum, 23, 1 - 440.

Lambert, G. (2003) Marine biodiversity of Guam: the Ascidiacea. Micronesica, 35 - 36, 588 - 597.

Lambert, G. (2019) Fouling ascidians (Chordata: Ascidiacea) of the Galapagos: Santa Cruz and Baltra Islands. Aquatic Invasions, 14, 132 - 149. https: // doi. org / 10.3391 / ai. 2019.14.1.05

Lee, S. S. - C., Teo, S. L. - M. & Lambert, G. (2013) New records of solitary ascidians on artificial structures in Singapore waters. Marine Biodiversity Records, 6, 1 - 18. https: // doi. org / 10.1017 / S 1755267213000638

Lee, S. S. - C., Chan, J. Y-H., Teo, S. L. - M. & Lambert, G. (2016) State of knowledge of ascidian diversity in South China Sea and new records for Singapore. Raffles Bulletin of Zoology, Supplement 34, 718 - 743.

Millar, R. H. (1956) Notes on some ascidians from Sierra Leone and Gambia. Annals & Magazine of Natural History, Series 12, 9, 409 - 417. https: // doi. org / 10.1080 / 00222935608655834

Millar, R. H. (1975) Ascidians from the Indo-West-Pacific region in the Zoological Museum, Copenhagen (Tunicata, Ascidiacea). Steenstrupia, 3, 205 - 336.

Rocha, R. M. & Nasser, C. M. (1998) Some ascidians (Tunicata, Ascidiacea) from Parana State, southern Brazil. Revista Brasileira de Biologia, 15, 633 - 642. https: // doi. org / 10.1590 / S 0101 - 81751998000300009

Rocha, R. M. & Costa, L. V. G. (2005) Ascidians (Urochordata: Ascidiacea) from Arraial do Cabo, Rio de Janeiro, Brazil. Iheringia, Serie Zoologia, 95, 57 - 64. https: // doi. org / 10.1590 / S 0073 - 47212005000100009

Stimpson, W. (1855) Descriptions of some of the new Marine Invertebrata from the Chinese and Japanese Seas. Proceedings of the Academy of Natural Sciences, Philadelphia, 7 (10), 375 - 384. https: // doi. org / 10.5962 / bhl. title. 51444

Tokioka, T. (1953) Ascidians of Sagami Bay. Iwanami Shoten, Tokyo, 315 pp.

Tokioka, T. (1970) Ascidians from Mindoro Islands, the Philippines. Publications of the Seto Marine Biological Laboratory, 18, 75 - 107. https: // doi. org / 10.5134 / 175626

Van Name, W. G. (1945) The North and South American ascidians. Bulletin of the American Museum of Natural History, 84, 1 - 476.

Figures

FIGURE 5. A, B: Ascidia sydneiensis about 1.5 cm in length. A: left side in tunic; B: closeup of a few clear tunic tubercles. C, D: Ascidia gemmata 7.9 cm in length in tunic (C) and left side, 7.2 cm long with tunic removed (D); E–G: Phallusia arabica. E: three individuals, largest 5.5 cm in length; F: left side of another individual 2.9 cm in length out of tunic; G: closeup of tunic blood vessels.