February 1st to 5th 2016
Olhão, Portugal
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Reporting of Non Indigenous Species including harmful microalgae in the port of Trieste (North Adriatic Sea)

Scientific Exhibition
Biological Invasions
Thursday, February 4, 2016 -
17:30 to 19:30

Cabrini, M. 1 Auriemma, R. 2 Beran, A. 3 Cerino, F. 4 de Olazabal, A. 5 Di Poi, E. 6 Fornasaro, D. 7 Nasi, F. 8

1National Institute of Oceanography and Experimental Geophysics (OGS)
2National Institute of Oceanography and Experimental Geophysics (OGS)
3National Institute of Oceanography and Experimental Geophysics (OGS)
4National Institute of Oceanography and Experimental Geophysics (OGS)
5National Institute of Oceanography and Experimental Geophysics (OGS)
6National Institute of Oceanography and Experimental Geophysics (OGS)
7National Institute of Oceanography and Experimental Geophysics (OGS)
8National Institute of Oceanography and Experimental Geophysics (OGS)

The introduction of Non Indigenous Species and harmful microalgae through ships’ ballast water is recognized by United Nations as one of the four most serious threats to human health, environment and resources. In the world, 3-5 billion tons of ballast waters are annually discharged from the ships with the consequence that 7.000 species among microorganisms, plants and animals can be transferred from a sea to another. For this reason, ports are considered as potential areas of NIS introduction by discharged ballast waters. In the frame of the Ballast Water Management System for Adriatic Sea Protection project, the Port Baseline Survey and the monitoring of the ballast waters in the ships incoming in the port of Trieste were carried out. The PBS in the port of Trieste was performed from 2014 to 2015 to seasonally analyse the phyto, zooplankton and macrofauna communities. Sampling was carried out in 6 stations located in the port of Trieste and in the reference site (C1) located inside the Marine Reserve of Miramare. One NIS was recorded among phytoplankton communities, the diatom Pseudo-nitzschia multistriata. Many harmful species were also identified among dinoflagellates (Alexandrium pseudogonyaulax, Dinophysis caudata, D. fortii, D. sacculus, D. tripos, Lingulodinium polyedrum, Phalacroma mitra, P. rotundatum, Prorocentrum cordatum, Protoceratium reticulatum) and diatoms (Pseudo-nitzschia multistriata, P. cf. galaxiae and Pseudo-nitzschia spp.). In some sediment samples, cysts of the potentially toxic dinoflagellate Alexandrium margalefi, never been reported in Northern Adriatic Sea, were identified. About zooplankton, the copepod Pseudodiaptomus marinus, a NIS found in the Gulf of Trieste in the 2010 for the first time, was recorded. Finally, we reported the first recordings of the macrozoobenthic NIS, the polychaete Notomastus aberans and the bivalve Arcuatula senhousia.
keywords: 
NIS, North Adriatic, Diatoms, Copepods, Macrofauna

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