J. Alder and A. Hancock, The British tunicata: an unfinished monograph, vol.3, pp.1-113, 1912.

W. Appeltans, S. T. Ahyong, G. Anderson, M. V. Angel, T. Artois et al., The magnitude of global marine species diversity, Curr. Biol, vol.22, pp.2189-2202, 2012.

F. Arenas, J. D. Bishop, J. T. Carlton, P. J. Dyrynda, W. F. Farnham et al., Alien species and other notable records from a rapid assessment survey of marinas on the south coast of England, J. Mar. Biol. Assoc. U. K, vol.86, pp.1329-1337, 2006.

M. O. Atsumi and Y. Saito, Studies on Japanese botryllid ascidians. V. A new species of the genus Botrylloides very similar to Botrylloides simodensis in morphology, Zool. Sci, vol.28, pp.532-542, 2011.

J. C. Avise, Phylogeography: the History and Formation of Species, 2000.

J. H. Barrett, Y. , and C. M. , Collins Pocket Guide to the Sea Shore, 1958.

L. B. Beheregaray, Twenty years of phylogeography: the state of the field and the challenges for the Southern Hemisphere, Mol. Ecol, vol.17, pp.3754-3774, 2008.

D. A. Benson, M. Cavanaugh, K. Clark, I. Karsch-mizrachi, D. J. Lipman et al., GenBank. Nucleic Acids Res, vol.41, pp.36-42, 2013.

N. J. Berrill, The tunicata, with an account of the British species, vol.133, pp.1-354, 1950.

J. D. Bishop, C. Roby, A. L. Yunnie, C. W. Wood, L. Lévêque et al., The Southern Hemisphere ascidian Asterocarpa humilis is unrecognised but widely established in NW France and Great Britain, Biol. Invasions, vol.15, pp.253-260, 2013.
URL : https://hal.archives-ouvertes.fr/hal-01218820

J. D. Bishop, C. A. Wood, L. Lévêque, A. L. Yunnie, and F. Viard, Repeated rapid assessment surveys reveal contrasting trends in occupancy of marinas by non-indigenous species on opposite sides of the western English Channel, Mar. Pollut. Bull, vol.95, pp.699-706, 2015.
URL : https://hal.archives-ouvertes.fr/hal-01218815

J. D. Bishop, C. A. Wood, A. L. Yunnie, and C. A. Griffiths, Unheralded arrivals: non-native sessile invertebrates in marinas on the English coast, Aquat. Invasions, vol.10, pp.249-264, 2015.

D. G. Bock, H. J. Macisaac, and M. E. Cristescu, Multilocus genetic analyses differentiate between widespread and spatially restricted cryptic species in a model ascidian, Proc. R. Soc. B: Biol. Sci, vol.279, pp.2377-2385, 2012.

D. G. Bock, A. Zhan, C. Lejeusne, H. J. Macisaac, and M. E. Cristescu, Looking at both sides of the invasion: patterns of colonization in the violet tunicate Botrylloides violaceus, Mol. Ecol, vol.20, pp.503-516, 2011.

R. Bouckaert, T. G. Vaughan, J. Barido-sottani, S. Duchêne, M. Fourment et al., BEAST 2.5: An advanced software platform for bayesian evolutionary analysis, PLoS Comput. Biol, vol.15, p.1006650, 2019.

R. Brunetti, Botryllid species (Tunicata, Ascidiacea) from the Mediterranean coast of Israel, with some considerations on the systematics of Botryllinae, Zootaxa, vol.2289, pp.18-32, 2009.

R. Brunetti and F. Mastrototaro, Ascidiacea of the European waters, 2017.

A. Bucklin, D. Steinke, and L. Blanco-bercial, DNA barcoding of marine metazoa, Annu. Rev. Mar. Sci, vol.3, pp.471-508, 2011.

M. L. Campbell, B. Gould, and C. L. Hewitt, Survey evaluations to assess marine bioinvasions, Mar. Pollut. Bull, vol.55, pp.360-378, 2007.

J. T. Carlton, Deep invasion ecology and the assembly of communities in historical time, Biological Invasions in Marine Ecosystems, pp.13-56, 2009.

A. N. Cohen, L. H. Harris, B. L. Bingham, J. T. Carlton, J. W. Chapman et al., Rapid assessment survey for exotic organisms in southern California bays and harbors, and abundance in port and non-port areas, Biol. Invasions, vol.7, pp.995-1002, 2005.

T. Comtet, A. Sandionigi, F. Viard, and M. Casiraghi, DNA (meta)barcoding of biological invasions: a powerful tool to elucidate invasion processes and help managing aliens, Biol. Invasions, vol.17, pp.905-922, 2015.
URL : https://hal.archives-ouvertes.fr/hal-01218809

J. A. Darling, B. S. Galil, G. R. Carvalho, M. Rius, F. Viard et al., Recommendations for developing and applying genetic tools to assess and manage biological invasions in marine ecosystems, Mar. Policy, vol.85, pp.54-64, 2017.

J. P. Dias, S. Fotedar, J. Munoz, M. J. Hewitt, S. Lukehurst et al., Establishment of a taxonomic and molecular reference collection to support the identification of species regulated by the Western Australian prevention list for introduced marine pests, Manag. Biol. Invasions, vol.8, pp.215-225, 2017.

N. B. Eales, The Littoral Fauna of Great Britain. A Handbook for Collectors, 1939.

O. Folmer, M. Black, W. Hoeh, R. Lutz, and R. Vrijenhoek, DNA primers for amplification of mitochondrial cytochrome c oxidase subunit I from diverse metazoan invertebrates. Mol, Mar. Biol. Biotechnol, vol.3, pp.294-299, 1994.

R. Gibson, B. Hextall, R. , and A. , Photographic Guide to the Sea and Shore Life of Britain and North-West Europe, 2001.

F. Griggio, A. Voskoboynik, F. Iannelli, F. Justy, M. Tilak et al., Ascidian mitogenomics: comparison of evolutionary rates in closely related taxa provides evidence of ongoing speciation events, Genome Biol. Evol, vol.6, pp.591-605, 2014.

T. A. Hall, BioEdit: a user friendly biological sequence alignment editor and analysis program for windows 95/98/NT, Nucleic Acids Symp. Ser, vol.41, pp.95-98, 1999.

J. D. Harris, Can you bank on GenBank?, Trends Ecol. Evol, vol.18, pp.317-319, 2003.

P. J. Hayward and J. S. Ryland, The Marine Fauna of the British Isles and North-West Europe, Molluscs to Chordates, 1990.

P. D. Hebert, P. M. Hollingsworth, and M. Hajibabaei, From writing to reading the encyclopedia of life, Philos. Trans. R. Soc. Lond. B Biol. Sci, vol.371, p.20150321, 2016.

M. J. Hickerson, B. C. Carstens, J. Cavender-bares, K. A. Crandall, C. H. Graham et al., Phylogeography's past, present, and future: 10 years after, Mol. Phylogenet. Evol, vol.54, pp.291-301, 2010.

P. Kapli, S. Lutteropp, J. Zhang, K. Kobert, P. Pavlidis et al., Multi-rate poisson tree processes for single-locus species delimitation under maximum likelihood and Markov chain Monte Carlo, Bioinformatics, vol.33, pp.1630-1638, 2017.

N. Knowlton, Molecular genetic analyses of species boundaries in the sea, Hydrobiologia, vol.420, pp.73-90, 2000.

C. C. Lambert, L. , and G. , Persistence and differential distribution of nonindigenous ascidians in harbors of the Southern California Bight, Mar. Ecol. Prog. Ser, vol.259, pp.145-161, 2003.

M. Lehtiniemi, H. Ojaveer, M. David, B. Galil, S. Gollasch et al., Dose of truth-Monitoring marine non-indigenous species to serve legislative requirements, Mar. Policy, vol.54, pp.26-35, 2015.

C. Lejeusne, D. G. Bock, T. W. Therriault, H. J. Macisaac, and M. E. Cristescu, Comparative phylogeography of two colonial ascidians reveals contrasting invasion histories in North America, Biol. Invasions, vol.13, pp.635-650, 2011.

S. López-legentil, M. Legentil, P. Erwin, and X. Turon, Harbor networks as introduction gateways: contrasting distribution patterns of native and introduced ascidians, Biol. Invasions, vol.17, pp.1623-1638, 2015.

D. J. Mcglashan, M. Ponniah, P. Cassey, and F. Viard, Clarifying marine invasions with molecular markers: an illustration based on mtDNA from mistaken calyptraeid gastropod identifications, Biol. Invasions, vol.10, pp.51-57, 2008.

R. H. Millar, British Ascidians (Synopses of the British Fauna, New Series, issue.1, 1970.

D. Abdoullaye, I. Acevedo, A. A. Adebayo, J. Behrmann-godel, and R. C. Benjamin, Permanent genetic resources added to molecular ecology resources database 1, Molecular Ecology Resources Primer Development Constorium, vol.10, pp.232-236, 2009.

A. L. Nunes, S. Katsanevakis, A. Zenetos, and A. C. Cardoso, Gateways to alien invasions in the European seas, Aquat. Invasions, vol.9, pp.133-144, 2014.

M. Nydam and J. J. Stachowicz, Predator effects on fouling community development, Mar. Ecol. Prog. Ser, vol.337, pp.93-101, 2007.

H. Ojaveer, B. S. Galil, M. L. Campbell, J. T. Carlton, J. Canning-clode et al., Classification of non-indigenous species based on their impacts: considerations for application in marine management, PLoS Biol, vol.13, p.1002130, 2015.

H. Ojaveer, B. S. Galil, D. Minchin, S. Olenin, A. Amorim et al., Ten recommendations for advancing the assessment and management of non-indigenous species in marine ecosystems, Mar. Policy, vol.44, pp.160-165, 2014.

V. Ordóñez, M. Pascual, M. Fernández-tejedor, and X. Turon, When invasion biology meets taxonomy: Clavelina oblonga (Ascidiacea) is an old invader in the Mediterranean Sea, Biol. Invasions, vol.18, pp.1203-1215, 2016.

E. Pante, N. Puillandre, A. Viricel, S. Arnaud-haond, D. Aurelle et al., Species are hypotheses: avoid connectivity assessments based on pillars of sand, Mol. Ecol, vol.24, pp.525-544, 2015.
URL : https://hal.archives-ouvertes.fr/hal-02002440

B. E. Picton, Ascidians of the British Isles. A Colour Guide, 1985.

J. Pons, T. G. Barraclough, J. Gomez-zurita, A. Cardoso, D. P. Duran et al., Sequence-based species delimitation for the DNA taxonomy of undescribed insects, Syst. Biol, vol.55, p.595609, 2006.

S. Ratnasingham and P. D. Hebert, BOLD: the barcode of life data system: barcoding, Mol. Ecol. Notes, vol.7, pp.355-364, 2007.

E. Reem, J. Douek, and B. Rinkevich, Ambiguities in the taxonomic assignment and species delineation of botryllid ascidians from the israeli mediterranean and other coastlines, Mitochondrial DNA Part A, vol.29, pp.1073-1080, 2018.

R. M. Rocha, M. Salonna, F. Griggio, M. Ekins, G. Lambert et al., The power of combined molecular and morphological analyses for the genus Botrylloides: identification of a potentially global invasive ascidian and description of a new species, Syst. Biodivers, pp.1-18, 2019.

J. Rozas, J. C. Sanchez-delbarrio, X. Messeguer, and R. Rozas, , 2003.

. Dnasp, DNA polymorphism analyses by the coalescent and other methods, Bioinformatics, vol.19, pp.2496-2497

J. S. Ryland, Gender of the genus Botrylloides Milne Edwards, Zootaxa, vol.3973, pp.398-400, 2015.

Y. Saito, H. Mukai, and H. Watanabe, Studies on Japanese compound styelid ascidians II. A new species of the genus Botrylloides and redescription of B. violaceus Oka, Publications Seto Mar. Biol. Lab, vol.26, pp.357-368, 1981.

K. Sambrook, R. H. Holt, R. Sharp, K. Griffith, R. C. Roche et al., Capacity, capability and cross-border challenges associated with marine eradication programmes in Europe: the attempted eradication of an invasive non-native ascidian, Didemnum vexillum in Wales, Policy, vol.48, pp.51-58, 2014.

J. Savigny, Mémoires Sur Les Animaux sans Vertèbres, Pt 2, Fasc. 1, 1816.

K. Tamura, M. Nei, and S. Kumar, Prospects for inferring very large phylogenies by using the neighbor-joining method, Proc. Natl. Acad. Sci. U.S.A, vol.101, pp.11030-11035, 2004.

K. Tamura, D. Peterson, N. Peterson, G. Stecher, M. Nei et al., MEGA5: molecular evolutionary genetics analysis using maximum likelihood, evolutionary distance, and maximum parsimony methods, Mol. Biol. Evol, vol.28, pp.2731-2739, 2011.

W. G. Van-name, The north and south American ascidians, Bull. Am. Museum Nat. Hist, vol.84, pp.1-476, 1945.

R. Vilgalys, Taxonomic misidentification in public DNA databases, New Phytol, vol.160, pp.4-5, 2003.

C. Wood, J. D. Bishop, L. Rennocks, and R. Crundwell, RAS 2015 Non-Native Species Rapid Assessment Surveys in English Marinas (E Anglia & W coast), 2016.