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Records of alien marine species of Indo-Pacific origin at Sigri Bay (Lesvos Island, north-eastern Aegean Sea)

Published online by Cambridge University Press:  17 March 2015

A. Evagelopoulos ,
D. Poursanidis ,
E. Papazisi ,
V. Gerovasileiou ,
N. Katsiaras  and
D. Koutsoubas
A. Evagelopoulos*
Affiliation:
Department of Marine Sciences, University of the Aegean 81100 Mytilene, Greece
D. Poursanidis
Affiliation:
Department of Marine Sciences, University of the Aegean 81100 Mytilene, Greece Foundation for Research and Technology – Hellas (FORTH), Institute of Applied and Computational Mathematics, N. Plastira 100, Vassilika Vouton, 70013Heraklion, Greece
E. Papazisi
Affiliation:
Department of Marine Sciences, University of the Aegean 81100 Mytilene, Greece
V. Gerovasileiou
Affiliation:
Department of Zoology, School of Biology, Aristotle University, 54124 Thessaloniki, Greece
N. Katsiaras
Affiliation:
Department of Marine Sciences, University of the Aegean 81100 Mytilene, Greece Institute of Oceanography, Hellenic Centre for Marine Research, 46.7 km Athinon-Souniou Ave, 19013 Anavissos, Greece
D. Koutsoubas
Affiliation:
Department of Marine Sciences, University of the Aegean 81100 Mytilene, Greece
*
Correspondence should be addressed to: A. Evagelopoulos, Department of Marine Sciences, University of the Aegean, 81100 Mytilene, Greece email: [email protected]
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Abstract

Ten alien species were recorded in a first-time survey of the benthic biodiversity of the upper sublittoral at Sigri Bay (Lesvos Island, north-eastern Aegean Sea). The record of the mollusc Syrnola fasciata is the first in Hellenic territorial waters. The records of the brown alga Stypopodium schimperi, the bivalve Septifer cumingii, the gastropods Syrnola fasciata and Smaragdia souverbiana and the bony fish Siganus luridus constitute evidence for a further northwards extension of their geographic ranges in the Aegean Sea. The record of Cerithium scabridum is the first in Lesvos Island and partially fills the gap in the distribution of the species in the eastern Aegean Sea. We also recorded the green alga Caulerpa cylindracea, the angiosperm Halophila stipulacea and the bivalve Pinctada imbricata radiata, which are widely distributed in the eastern Mediterranean. The polychaete Marphysa adenensis, which was also found at Sigri Bay, has recently been reported for the first time from the Mediterranean as a cryptogenic species.

Keywords

invasive speciesnon-indigenous speciesLessepsian migrantsgeographic rangegeographic distributioneastern Mediterranean
Type
Research Article
Information
Marine Biodiversity Records , Volume 8 , 2015 , e35
Copyright
Copyright © Marine Biological Association of the United Kingdom 2015 

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References

REFERENCES

Akçali, B. and Cirik, Ş. (2007) Alien and invasive seaweeds distribution along the Turkish coast of the Aegean Sea. Rapports et Proce`s-verbaux des Re'unions – Commission Internationale pour L'Exploration Scientifique de la Mer Méditerranée 38, 412.Google Scholar
Albayrak, S. (2001) Prosobranch gastropods of the Imbros Island (NE Aegean Sea). Acta Adriatica 42, 35–42.Google Scholar
Al-Madfa, H., Abdel-Moati, M.A.R. and Al-Gimaly, F.H. (1998) Pinctada radiata (Pearl Oyster): a bioindicator for metal pollution monitoring in the Qatari waters (Arabian Gulf). Bulletin of Environmental Contamination and Toxicology 60, 245–251.Google Scholar
Bakir, B.B., Öztürk, B., Doğan, A. and Önen, M. (2012) Mollusc fauna of Iskenderun Bay with a checklist of the region. Turkish Journal of Fisheries and Aquatic Sciences 12, 171–184.Google Scholar
Bariche, M., Letourneur, Y. and Harmelin-Vivien, M. (2004) Temporal fluctuations and settlement patterns of native and Lessepsian herbivorous fishes on the Lebanese coast (eastern Mediterranean). Environmental Biology of Fishes 70, 81–90.CrossRefGoogle Scholar
Bianchi, C.N. (2007) Biodiversity issues for the forthcoming tropical Mediterranean Sea. Hydrobiologia 580, 7–21.CrossRefGoogle Scholar
Boudouresque, C.F. and Verlaque, M. (2002) Biological pollution in the Mediterranean Sea: invasive versus introduced macrophytes. Marine Pollution Bulletin 44, 32–38.Google Scholar
Buzzurro, G. and Greppi, E. (1994) Presenza di Smaragdia (Smaragdella) souverbiana (Montrouzier, 1863) nel Mediterraneo orientale. Bollettino Malacologico 29, 319–321.Google Scholar
Byers, J.E. and Grabowski, J.H. (2014) Soft-sediment communities. In Bertness, M.D., Bruno, J.F., Silliman, B.R. and Stachowicz, J.J. (eds) Marine community ecology and conservation. Sunderland, MA: Sinauer Associates, pp. 227–249.Google Scholar
Byers, J.E. and Pringle, J.M. (2006) Going against the flow: retention, range limits and invasions in advective environments. Marine Ecology Progress Series 313, 27–41.Google Scholar
Ceccherelli, G., Piazzi, L. and Cinelli, F. (2000) Response of the non-indigenous Caulerpa racemosa (Forsskål) J. Agardh to the native seagrass Posidonia oceanica (L.) Delile: effect of density of shoots and orientation of edges of meadows. Journal of Experimental Marine Biology and Ecology 243, 227–240.CrossRefGoogle Scholar
Çinar, M.E. and Dagli, E. (2012) New records of alien polychaete species for the coasts of Turkey. Mediterranean Marine Science 13, 103–107.Google Scholar
Coll, M., Piroddi, C., Steenbeek, J., Kaschner, K., Ben Rais Lasram, F., Aguzzi, J., Ballesteros, E., Bianchi, C.N., Corbera, J., Dailianis, T., Danovaro, R., Estrada, M., Froglia, C., Galil, B.S., Gasol, J.M., Gertwagen, R., Gil, J., Guilhaumon, F., Kesner-Reyes, K., Kitsos, M.-S., Koukouras, A., Lampadariou, N., Laxamana, E., López-Fé de la Cuadra, C.M., Lotze, H.K., Martin, D., Mouillot, D., Oro, D., Raicevich, S., Rius-Barile, J., Saiz-Salinas, J.I., San Vicente, C., Somot, S., Templado, J., Turon, X., Vafidis, D., Villanueva, R. and Voultsiadou, E. (2010) The biodiversity of the Mediterranean Sea: estimates, patterns, and threats. PLoS ONE 5, e11842, doi: 10.1371/journal.pone.0011842.CrossRefGoogle ScholarPubMed
Costello, M.J., Coll, M., Danovaro, R., Halpin, P., Ojaveer, H. and Miloslavich, P. (2010) A census of marine biodiversity knowledge, resources, and future challenges. PLoS ONE 5, e12110, doi: 10.1371/journal.pone.0012110.CrossRefGoogle ScholarPubMed
Day, J.H. (1962) Polychaeta from several localities in the Western Indian Ocean. Proceedings of the Zoological Society of London 139, 627–656.Google Scholar
Dekker, H. (2000) The Neritidae (Gastropoda) from the circumarabian seas, with the description of two new species, a new subgenus and a new genus. Vita Marina 47, 29–64.Google Scholar
Dimitriadis, C., Sini, M., Gerovasileiou, V., Fournari-Kostandinisou, I., Sourbes, L., Poursanidis, D. and Koutsoubas, D. (2013) Native vs. alien herbivorous fish in the National Marine Park of Zakynthos. In Mediterranean marine biodiversity. In view of climate change and the invasion of alien species, Heraklion, 7–9 October 2013. Heraklion: HCMR, p. 53.Google Scholar
EASIN (2014) European alien species information network. Available at: http://easin.jrc.ec.europa.eu/ (accessed 21 June 2014).Google Scholar
Eleftheriou, A. and McIntyre, A. (eds) (2005) Methods for the study of marine benthos, 3rd edn.Oxford: Blackwell Science.CrossRefGoogle Scholar
EU (2008a) Directive 2008/56/EC of the European Parliament and of the Council of 17 June 2008: establishing a framework for community action in the field of marine environmental policy (Marine Strategy Framework Directive). Official Journal of the European Communities, L164/19.Google Scholar
EU (2008b) Communication from the Commission to the Council, the European Parliament, the European Economic and Social Committee and the Committee of the Regions of 3 September 2008: a European Strategy for Marine and Maritime Research. A coherent European Research Area framework in support of a sustainable use of oceans and seas, COM 2008, p. 534.Google Scholar
EU (2010) Commission Decision of 1 September 2010: on criteria and methodological standards on good environmental status of marine waters. Official Journal of the European Communities, L232/14.Google Scholar
EU (2011) Communication from the Commission to the European Parliament, the Council, The Economic and Social Committee of the Regions of 3 May 2011: Our life insurance, our natural capital: an EU biodiversity strategy to 2020, COM 2011, 244 final.Google Scholar
EU (2013) Proposal for a Regulation of the European Parliament and of the Council of 9 Septenber 2013: on the prevention and management of the introduction and spread of invasive alien species. COM2013 620 final.Google Scholar
Galil, B.S. (2007) Loss or gain? Invasive aliens and biodiversity in the Mediterranean Sea. Marine Pollution Bulletin 55, 314–322.CrossRefGoogle ScholarPubMed
Giakoumi, S. (2014) Distribution patterns of the invasive herbivore Siganus luridus (Rüppell, 1829) and its relation to native benthic communities in the central Aegean Sea, Northeastern Mediterranean. Marine Ecology 35, 96–105.Google Scholar
Golani, D. (2010) Colonization of the Mediterranean by Red Sea fishes via the Suez Canal – Lessepsian migration. In Golani, D. and Appelbaum-Golani, B. (eds) Fish invasions of the mediterranean sea: change and renewal. Sofia-Moscow: Pensoft Publishers, pp. 145–188.Google Scholar
Gravier, C. (1900) Contribution à l'étude des Annélides Polychètes de la Mer Rouge. Première partie. Nouvelles Archives du Museum d'Histoire Naturelle Paris, Ser. 4, 2, 137–282.Google Scholar
Harmelin-Vivien, M. and Harmelin, J.G. (1975) Presentation d'une methode d'évaluation in situ de la faune ichtyologique. Travaux scientifiques du Parc national de Port-Cros 1, 47–52.Google Scholar
Harmelin-Vivien, M., Harmelin, J.G., Chauvet, C., Duval, C., Galzin, R., Leieune, P., Barnabb, G., Blanc, F., Chevalier, R., Duclerc, J. and Lassere, G. (1985) Evaluation visuelle des peuplements et populations de poissons. Methodes et problèmes. Revue d' Ecologie-La Terre Et La Vie 40, 467–539.Google Scholar
Hulme, P.E., Bacher, S., Kenis, M., Klotz, S., Kühn, I., Minchin, D., Nentwig, W., Olenin, S., Panov, V., Pergl, J., Pyšek, P., Roques, A., Sol, D., Solarz, W. and Vilà, M. (2008) Grasping at the routes of biological invasions: a framework for integrating pathways into policy. Journal of Applied Ecology 45, 403–414.CrossRefGoogle Scholar
Kara, A. and Akyol, O. (2011) Record of Lessepsian rabbitfish Siganus luridus from northern Aegean Sea (Izmir Bay, Turkey). Journal of Applied Ichthyology 27, 1381–1382.Google Scholar
Karachle, P.K., Triantaphyllidis, C. and Stergiou, K.I. (2004) Bluespotted cornetfish, Fistularia commersonii Rüpell, 1938: a Lessepsian sprinter. Acta Icthyologica et Piscatoria 34, 103–108.CrossRefGoogle Scholar
Katsanevakis, S., Bogucarskis, K., Gatto, F., Vandekerkhove, J., Deriu, I. and Cardoso, A.C. (2012) Building the European Alien Species Information Network (EASIN): a novel approach for the exploration of distributed alien species data. BioInvasions Records 1, 235–245.Google Scholar
Katsanevakis, S., Issaris, Y., Poursanidis, D. and Thessalou-Legaki, M. (2010) Vulnerability of marine habitats to the invasive green alga Caulerpa racemosa var. cylindracea within a marine protected area. Marine Environmental Research 70, 210–218.Google Scholar
Katsanevakis, S. and Tsiamis, K. (2009) Records of alien marine species in the shallow coastal waters of Chios Island (2009). Mediterranean Marine Science 10, 99–108.CrossRefGoogle Scholar
Katsanevakis, S., Zenetos, A., Poursanidis, D., Nunes, A.L., Deriu, I., Bogucarskis, K. and Cardoso, A.C. (2013) ELNAIS meets EASIN: distribution of marine alien species in Greece using EASIN mapping services and ELNAIS spatial data. Mediterranean Marine Science 14, 95–98.Google Scholar
Katsiaras, N., Simboura, N. and Koutsoubas, D. (2014) The rare subgroup C1 of Marphysa (Polychaeta, Eunicidae): re-description of species and first records in the Mediterranean Sea. Zootaxa 3873, 201–217.Google Scholar
Klein, J. and Verlaque, M. (2008) The Caulerpa racemosa invasion: a critical review. Marine Pollution Bulletin 56, 205–225.Google Scholar
Lavie, B. and Nevo, E. (1986) Genetic diversity of marine gastropods: contrasting strategies of Cerithium rupestre and C. scabridum in the Mediterranean Sea. Marine Ecology Progress Series 28, 99–103.Google Scholar
Lockwood, J.L., Hoopes, M.F. and Marchetti, M.P. (2013) Invasion ecology, 2nd edn.Chichester: Wiley-Blackwell.Google Scholar
MAMIAS (2014) Marine Mediterranean Invasive Alien Species Database. Available at: http://mamias.org/ (accessed 21 June 2014).Google Scholar
Manousis, T. and Galinou-Mitsoudi, S. (2014) New gastropod records for the Eastern Mediterranean Sea and one new alien (Emarginula decorata Deshayes, 1863) for the Mediterranean Sea from NW Aegean Sea, Greece. Journal of Biological Research-Thessaloniki 21, 20.CrossRefGoogle Scholar
Manousis, T., Mpardakis, G., Paraskevopoulos, C. and Galinou-Mitsoudi, S. (2010) The Bivalvia Mollusca of Thessaloniki & Thermaikos Gulfs (North Aegean Sea, Greece) with emphasis on new species for Hellenic waters. Journal of Biological Research-Thessaloniki 14, 161–179.Google Scholar
Meliane, I. and Hewitt, C. (2005) Gaps and priorities in addressing marine invasive species. Gland, Switzerland: IUCN Information Document, 9 pp.Google Scholar
Molnar, J.L., Gamboa, R.L., Revenga, C. and Spalding, M.D. (2008) Assessing the global threat of invasive species to marine biodiversity. Frontiers in Ecology and the Environment 6, 485–492.Google Scholar
Nunes, A.L., Katsanevakis, S., Zenetos, A. and Cardoso, A.C. (2014) Gateways to alien invasions in the European Seas. Aquatic Invasions, 9, 133–144.Google Scholar
Özbek, E.Ö., Özkaya, M., Öztürk, B. and Golani, D. (2014) First record of the blenny Parablennius thysanius (Jordan & Seale, 1907) in the Mediterranean. Journal of Black Sea/Mediterranean Environment 20, 53–59.Google Scholar
Öztürk, B. and Can, A. (2006) Indo-Pacific gastropod species in the Levantine and Aegean Seas. Aquatic Invasions 1, 124–129.Google Scholar
Pancucci-Papadopoulou, M.A., Raitsos, D.E. and Corsini-Foka, M. (2012) Biological invasions and climatic warming: implications for south-eastern Aegean ecosystem functioning. Journal of the Marine Biological Association of the United Kingdom 92, 777–789.Google Scholar
Pancucci-Papadopoulou, M.A., Zenetos, A., Corsini-Foka, M. and Politou, C.Y. (2005) Update of marine alien species in Hellenic waters. Mediterranean Marine Science 6, 147–158.Google Scholar
Piazzi, L., Meinesz, A., Verlaque, M., Akçali, B., Antolić, B., Argyrou, M., Balata, D., Ballesteros, E., Calvo, S., Cinelli, F., Cirik, S., Cossu, A., D'Archino, F., Djellouli, A.S., Javel, F., Lanfranco, E., Mifsud, C., Pala, D., Panayotidis, P., Peirano, A., Pergent, G., Petrocelli, A., Ruitton, S., Ž uljević, A. and Ceccherelli, G. (2005) Invasion of Caulerpa racemosa var. cylindracea (Caulerpales, Chlorophyta) in the Mediterranean Sea: an assessment of the spread. Cryptogamie Algologie 26, 189–202.Google Scholar
Por, F.D. (1971) One hundred years of Suez Canal – a century of Lessepsian migration: retrospect and viewpoints. Systematic Biology 20, 138–159.Google Scholar
Raitsos, D.E., Beaugrand, G., Georgopoulos, D., Zenetos, A., Pancucci-Papadopoulou, A.M., Theocharis, A. and Papathanassiou, E. (2010) Global climate change amplifies the entry of tropical species into the eastern Mediterranean Sea. Limnology and Oceanography 55, 1478–1484.CrossRefGoogle Scholar
Robertson, R. and Mau-Lastovicka, T. (1979) The Ectoparasitism of Boonea and Fargoa (Gastropoda: Pyramidellidae). Biological Bulletin 157, 320–333.Google Scholar
Rossini, R.A., Rueda, J.L. and Tibbetts, I.R. (2014) Feeding ecology of the seagrass-grazing nerite Smaragdia souverbiana (Montrouzier, 1863) in subtropical seagrass beds of eastern Australia. Journal of Molluscan Studies 80, 139–147.Google Scholar
Rothman, B.S. and Mienis, H.K. (2011) Smaragdia souverbiana: not only the first record from Israel, but also the oldest record from the Mediterranean Sea (Gastropoda, Neritidae). Triton 24, 9–10.Google ScholarPubMed
Rueda, J.L. and Salas, C. (2007) Trophic dependence of the emerald neritid Smaragdia viridis (Linnaeus, 1758) on two seagrasses from European coasts. Journal of Molluscan Studies 73, 211–214.Google Scholar
Sala, E., Kizilkaya, Z., Yildirim, D. and Ballesteros, E. (2011) Alien marine fishes deplete algal biomass in the eastern Mediterranean. PLoS ONE 6, e17356, doi: 10.1371/journal.pone.0017356.Google Scholar
Serbetis, C.D. (1963) L'acclimatation de la Meleagrina (Pinctada) margaritifera (Lam.) en Grèce. Rapports et procès-verbauxdes réunions. Commission Internationale pour l'Exploration Scientifique de la mer Méditerranée 17, 271–272.Google Scholar
Spalding, M.D., Fox, H.E., Allen, G.R., Davidson, N., Ferdaña, Z.A., Finlayson, M., Halpern, B.S., Jorge, M.A., Lombana, A., Lourie, S.A., Martin, K.D., McManus, E., Molnar, J., Recchia, C.A. and Robertson, J. (2007) Marine Ecoregions of the World: a bioregionalization of coast and shelf areas. BioScience 57, 573–583.CrossRefGoogle Scholar
Streftaris, N. and Zenetos, A. (2006) Alien marine species in the Mediterranean – the 100 “Worst Invasives” and their impact. Mediterranean Marine Science 7, 87–118.Google Scholar
Theocharis, A., Balopoulos, E., Kioroglou, S., Kontoyiannis, H. and Iona, A. (1999) A synthesis of the circulation and hydrography of the South Aegean Sea and the Straits of the Cretan Arc (March 1994–January 1995). Progress in Oceanography 44, 469–509.Google Scholar
Tsiamis, K., Montesanto, B., Panayotidis, P., Katsaros, C. and Verlaque, M. (2010) Updated records and range expansion of alien marine macrophytes in Greece (2009). Mediterranean Marine Science 11, 61–80.Google Scholar
Tsiamis, K., Panayotidis, P., Economou-Amilli, A. and Katsaros, C. (2013) Seaweeds of the Greek coasts. I. Phaeophyceae. Mediterranean Marine Science 14, 141–157.Google Scholar
van Aartsen, J.J., Barash, A. and Carrozza, F. (1989) Addition to the knowledge of the Mediterranean mollusca of Israel and Sinai. Bollettino Malacologico 25, 63–76.Google Scholar
Verlaque, M., Afonso-Carrillo, J., Gil-Rodriguez, M.C., Durand, C., Boudouresque, C.F. and Le Parco, Y. (2004) Blitzkrieg in a marine invasion: Caulerpa racemosa var. cylindracea (Bryopsidales, Chlorophyta) reaches the Canary Islands (north-east Atlantic). Biological Invasions 6, 269–281.Google Scholar
Verlaque, M. and Boudouresque, C.-F. (1991) Stypopodium schimperi (Buchinger ex Kützing) Verlaque et Boudouresque comb. nov. (Dictyotales, Fucophyceae), algue de mer Rouge récemment apparue en Méditerranée. Cryptogamie, Algologie 12, 195–211.Google Scholar
Verlaque, M., Durand, C., Huisman, J.M., Boudouresque, C.-F. and Le Parco, Y. (2003) On the identity and origin of the Mediterranean invasive Caulerpa racemosa (Caulerpales, Chlorophyta). European Journal of Phycology 38, 325–339.Google Scholar
Williamson, M. (1996) Biological invasions. London: Chapman & Hall.Google Scholar
WoRMS Editorial Board (2014) World Register of Marine Species. Available at: http://www.marinespecies.org (accessed 23 June 2014).Google Scholar
Yaglioglu, D., Turan, C., Erguden, D. and Gurlek, M. (2011) Range expansion of silverstripe blaasop, Lagocephalus sceleratus (Gmelin, 1789), to the northeastern Mediterranean Sea. Biharean Biologist 5, 159–161.Google Scholar
Zenetos, A., Çinar, M.E., Pancucci-Papadopoulou, M.A., Harmelin, J.G., Furnari, G., Andaloro, F., Bellou, N., Streftaris, N. and Zibrowius, H. (2005a) Annotated list of marine alien species in the Mediterranean with records of the worst invasive species. Mediterranean Marine Science 6, 63–118.Google Scholar
Zenetos, A., Gofas, S., Morri, C., Rosso, A., Violanti, D., Raso, J.G., Çinar, M.E., Almogi-Labin, A., Ates, A.S. and Azzurro, E. (2012) Alien species in the Mediterranean Sea by 2012. A contribution to the application of European Union's Marine Strategy Framework Directive (MSFD). Part 2. Introduction trends and pathways. Mediterranean Marine Science 13, 328–352.Google Scholar
Zenetos, A., Gofas, S., Russo, G. and Templado, J. (2004) CIESM atlas of exotic species in the Mediterranean, Vol. 3, Molluscs. Monaco: CIESM Publishers.Google Scholar
Zenetos, A., Gofas, S., Verlaque, M., Çinar, M.E., Garcia Raso, J.E., Bianchi, C.N., Morri, C., Azzurro, E., Bilecenoglu, M. and Froglia, C. (2010) Alien species in the Mediterranean Sea by 2010. A contribution to the application of European Union's Marine Strategy Framework Directive (MSFD). Part I. Spatial distribution. Mediterranean Marine Science 11, 381–493.Google Scholar
Zenetos, A., Katsanevakis, S., Poursanidis, D., Crocetta, F., Damalas, D., Apostolopoulos, G., Gravili, C., Vardala-Theodorou, E. and Malaquias, M. (2011) Marine alien species in Greek Seas: additions and amendments by 2010. Mediterranean Marine Science 12, 95–120.CrossRefGoogle Scholar
Zenetos, A., Koutsogiannopoulos, D., Ovalis, P. and Poursanidis, D. (2013) The role played by citizen scientists in monitoring marine alien species in Greece. Cahier de Biologie Marine 54, 419–426.Google Scholar
Zenetos, A., Koutsoubas, D. and Vardala-Theodorou, E. (2005b) Origin and vectors of introduction of exotic molluscs in Greek Waters. Belgian Journal of Zoology 135, 279–286.Google Scholar
Zenetos, A., Ovalis, P. and Kalogirou, S. (2009a) Closing the gap: Cerithium scabridum Philippi, 1848 found in the South Aegean (Greece, Mediterranean Sea). Journal of Biological Research – Thessaloniki 11, 107–110.Google Scholar
Zenetos, A., Pancucci-Papadopoulou, M., Zogaris, S., Papastergiadou, E., Vardakas, L., Aligizaki, K. and Economou, A.N. (2009b) Aquatic alien species in Greece (2009): tracking sources, patterns and effects on the ecosystem. Journal of Biological Research – Thessaloniki 12, 135–172.Google Scholar
Zenetos, A., Vassilopoulou, V., Salomidi, M. and Poursanidis, D. (2008) Additions to the marine alien fauna of Greek waters (2007 update). Marine Biodiversity Records 1, e91, doi: 10.1017/S1755267207009281.Google Scholar
Zervakis, V. and Georgopoulos, D. (2002) Hydrology and circulation in the North Aegean (eastern Mediterranean) throughout 1997 and 1998. Mediterranean Marine Science 3, 5–19.Google Scholar