Distribution Bay of Fundy to Cape Hatteras [details]
Shenkar, N.; Gittenberger, A.; Lambert, G.; Rius, M.; Moreira da Rocha, R.; Swalla, B.J.; Turon, X. (2025). Ascidiacea World Database. Ascidiella aspersa (Müller, 1776). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=103718 on 2025-07-18
original description(ofAscidia aculeata Alder, 1863)Alder, J. (1863). Observations on the British Tunicata with descriptions of several new species. <em>Ann. Mag. Nat. Hist., ser.3.</em> 11: 153-173.[details]
original description(ofAscidia affinis Hancock, 1870)Hancock, A. (1870). On the larval state of Molgula; with descriptions of several new species of simple ascidians. <em>Ann. Mag. nat. Hist.</em> (4) 6: 353-368.[details]
original description(ofAscidia elliptica Alder & Hancock, 1848)Alder, J.; Hancock, A. (1848). Additions to the mollusca of Northumberland and Durham. <em>Trans. Tyneside Field Club.</em> 1: 195-207.[details]
original description(ofAscidia normanni Alder & Hancock, 1870)Hancock, A. (1870). On the larval state of Molgula; with descriptions of several new species of simple ascidians. <em>Ann. Mag. nat. Hist.</em> (4) 6: 353-368.[details]
original description(ofAscidia pedunculata Hoffman, 1829)Hoffman, F. (1829). Einige Bemerkungen uber die Vegetation und die fauna von Helgoland. <em>Sber. Ges. Naturf. Freunde Berl.</em> 1: 228-260.[details]
original description(ofAscidia pellucida Alder & Hancock, 1848)Alder, J.; Hancock, A. (1848). Additions to the mollusca of Northumberland and Durham. <em>Trans. Tyneside Field Club.</em> 1: 195-207.[details]
original description(ofAscidia pustulosa Alder, 1863)Alder, J. (1863). Observations on the British Tunicata with descriptions of several new species. <em>Ann. Mag. Nat. Hist., ser.3.</em> 11: 153-173.[details]
original description(ofAscidia sordida Alder & Hancock, 1848)Alder, J.; Hancock, A. (1848). Additions to the mollusca of Northumberland and Durham. <em>Trans. Tyneside Field Club.</em> 1: 195-207.[details]
original description(ofAscidia cristata Risso, 1826)Risso, A. (1826-1827). Histoire naturelle des principales productions de l'Europe Méridionale et particulièrement de celles des environs de Nice et des Alpes Maritimes. <em>[book series].</em> 400 pp., 13 pls. [volumes 1-5. Paris, F.G. Levrault. vol. 3. Mammifères. Oiseaux. Poissons / vol. 4. Mollusques. Annélides / vol. 5. Crustacés. Myriapodes, scorpionides, arachnides et acarides. Insectes. Vers intestinaux. Radiaires. Zoophytes]., available online athttp://www.biodiversitylibrary.org/bibliography/58984[details]
original description(ofAscidia opalina MacGillivray, 1843)MacGillivray, W. (1843). A history of the molluscous animals of the counties of Aberdeen, Kincardine and Banff, to which is appended an account of the cirripedal animals of the same district. <em>Cunningham & Mortimer, London.</em> xxiv + 372 pp., available online athttp://www.biodiversitylibrary.org/item/64238[details]
original description(ofAscidia albida Alder & Hancock, 1848)Alder, J.; Hancock, A. (1848). Additions to the mollusca of Northumberland and Durham. <em>Trans. Tyneside Field Club.</em> 1: 195-207.[details]
original description(ofAscidia truncata Herdman, 1881)Herdman, W. A. (1881). Notes on the British Tunicata with descriptions of new species. <em>Proc. Linn. Soc. London.</em> 15: 274-290.[details]
original description(ofAscidia triangularis Herdman, 1881)Herdman, W. A. (1881). Notes on the British Tunicata with descriptions of new species. <em>Proc. Linn. Soc. London.</em> 15: 274-290.[details]
original description(ofAscidia minuta Kiaer, 1893)Kiaer, J. (1893). Oversigt over Norges Ascidiae Simplices. <em>Forh. Vid. Selsk. Christian.</em> 9: 1-105.[details]
original description(ofAscidia expansa Kiaer, 1893)Kiaer, J. (1893). Oversigt over Norges Ascidiae Simplices. <em>Forh. Vid. Selsk. Christian.</em> 9: 1-105.[details]
basis of recordMonniot, C. (2001). Ascidiacea & Sorberacea. <em>In: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels.</em> 50: pp. 352-355. (look up in IMIS) [details]
Other
context source (Introduced species)Fofonoff, P.W.; Ruiz, G.M.; Steves, B.; Carlton, J.T. (2014-2024). National Exotic Marine and Estuarine Species Information System (NEMESIS). , available online athttp://invasions.si.edu/nemesis[details]
context source (Schelde)van Eck, G. Th. M.; Holzhauer, H. (2007). Monitoring van de effecten van de verruiming 48'/43': MOVE eindrapport 2006 (Rapport 10). <em>Rapport RIKZ = Report RIKZ, 2007.003. RIKZ: Middelburg.</em> 64 pp. (look up in IMIS) [details]
additional sourceMuller, Y. (2004). Faune et flore du littoral du Nord, du Pas-de-Calais et de la Belgique: inventaire. [Coastal fauna and flora of the Nord, Pas-de-Calais and Belgium: inventory]. <em>Commission Régionale de Biologie Région Nord Pas-de-Calais: France.</em> 307 pp., available online athttp://www.vliz.be/imisdocs/publications/145561.pdf[details]
additional sourceKott, P. (1985). The Australian Ascidiacea part 1, Phlebobranchia and Stolidobranchia. <em>Mem Qd Mus.</em> 23: 1-440., available online athttp://biostor.org/reference/109626[details] Available for editors [request]
additional sourceKott, P.; Bradford-Grieve, J.; Esnal, G.; Murdoch, R.C. (2009). Phylum Tunicata: sea squirts, salps, appendicularians, in: Gordon, D.P. (Ed.) (2009). New Zealand inventory of biodiversity: 1. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. pp. 409-430.[details] Available for editors [request]
additional sourceLutaenko, K.A.; Furota, T.; Nakayama; S.; Shin, K.; Xu, J. (2013). Atlas of Marine Invasive Species in the NOWPAP Region. Beijing: NOWPAP DINRAC (Northwest Pacific Action Plan, Data and Information Network Regional Center). 189 pp.[details]
additional sourceBrine, O.; Hunt, L.; Costello, M. J. (2013). Marine biofouling on recreational boats on swing moorings and berths. <em>Management of Biological Invasions.</em> 4(4): 327-341., available online athttps://doi.org/10.3391/mbi.2013.4.4.07[details] Available for editors [request]
additional sourceNishikawa, T.; Oohara, I.; Saitoh, K.; Shigenobu, Y.; Hasegawa, N.; Kanamori, M.; Baba, K.; Turon, X.; Bishop, J. D. D. (2014). Molecular and Morphological Discrimination Between an Invasive Ascidian, Ascidiella aspersa , and Its Congener A. scabra (Urochordata: Ascidiacea). <em>Zoological Science.</em> 31(3): 180-185., available online athttps://doi.org/10.2108/zsj.31.180[details] Available for editors [request]
additional sourceNishikawa, T.; Yasuda, A.; Murata, Y.; Otani, M. (2019). The Earliest Japanese records of the invasive European ascidian <i>Ascidiella aspersa</i> (Müller, 1776) (Urochordata: Ascidiidae) from Mutsu and Ago Bays, with a brief discussion of its invasion processes. <em>Sessile Organisms.</em> 36(1): 1-6., available online athttps://doi.org/10.4282/sosj.36.1[details] Available for editors [request]
additional sourceNydam, M.; Nichols, C.; Lambert, G. (2022). First record of the ascidian Ascidiella aspersa (Mϋller, 1776) in southern California. <em>BioInvasions Records.</em> 11(2): 416-427., available online athttps://doi.org/10.3391/bir.2022.11.2.15[details]
additional sourceHayward, P.J. & J.S. Ryland (Eds.). (1990). The marine fauna of the British Isles and North-West Europe: 1. Introduction and protozoans to arthropods. <em>Clarendon Press: Oxford, UK.</em> 627 pp. (look up in IMIS) [details] Available for editors [request]
Introduced species population trend Argentinean part of the South Atlantic Ocean (Marine Region): It is now established in several harbors from Chubut to Puerto Deseado (U.S. Museum of Natural History 2006; Tatián et al. 2010). [details] Introduced species vector dispersal Argentinean part of the South Atlantic Ocean (Marine Region) Ships: accidental as attached or free-living fouling organisms [details]
Unreviewed
Diet plankton feeder [details] Dimensions 50-100 mm in size [details] Distribution Bay of Fundy to Cape Hatteras [details] Identification Often confused with A. scabra, because it can attaches itself to the hard substrate by his flanks - a characteristic of the latter. [details] Reproduction hermaphroditic; eggs shed and fertilized in the water [details]
Present 
