Naslov
Blooms of the potentially toxic diatom Pseudo-nitzschia calliantha Lundholm, Moestrup & Hasle in coastal waters of the northern Adriatic Sea (Croatia)

Autori
Marić, Daniela ; Ljubešić, Zrinka ; Godrijan, Jelena ; Viličić, Damir ; Ujević, Ivana ; Precali, Robert

Izvornik
Estuarine, coastal and shelf science (0272-7714) 92 (2011), 3; 323-331

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Pseudo-nitzschia spp. ; phytoplankton ; Pseudo-nitzschia calliantha ; domoic acid (DA) ; Adriatic Sea

Sažetak
The genus Pseudo-nitzschia contains more than 30 species, though most of them are discernible only on the basis of ultrastructural or genetic differences. We present a taxonomic study of Pseudonitzschia calliantha Lundhum, Hasle & Moestrup in the coastal waters of the northern Adriatic Sea together with domoic acid (DA) measurements on natural and breeding populations of shellfish. Sampling carried out monthly at 13 stations during 2007 showed Pseudo-nitzschia species to be present with high abundances during the entire year, forming blooms in coastal waters (reaching abundances of up to 1.2 x106 cells L-1) during the late summer/early autumn, when they contributed up to 70 % of the whole phytoplankton community. Ultrastructural examination provided evidence that the observed blooms were formed by the potentially toxic species P. calliantha. After the P. calliantha bloom, DA was detected at 3 stations along the north-eastern Adriatic coast with concentrations ranging from 0.11-1.32 μg g-1 in shellfish tissue. The distribution patterns of the species were analyzed statistically in order to explain the relationships between environmental variables and population dynamics. We here report on a mass appearance of the potentially toxic P. calliantha in the coastal waters of the northern Adriatic

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Biologija

POVEZANOST RADA