FN Archimer Export Format
PT J
TI Algal toxin profiles in Nigerian coastal waters (Gulf of Guinea) using passive sampling and liquid chromatography coupled to mass spectrometry
BT 
AF ZENDONG, Suzie Zita
   KADIRI, Medina
   HERRENKNECHT, Christine
   NEZAN, Elisabeth
   MAZZEO, Antonia
   HESS, Philipp
AS 1:1,3;2:2;3:3;4:4;5:5;6:1;
FF 1:PDG-ODE-DYNECO-PHYC;2:;3:;4:PDG-ODE-LITTORAL-LERBO;5:;6:PDG-ODE-DYNECO-PHYC;
C1 IFREMER, Lab Phycotoxines, Rue Ile Yeu, F-44311 Nantes, France.
   Univ Benin, Dept Plant Biol & Biotechnol, Benin, Nigeria.
   Univ Nantes, LUNAM, MMS EA2160, Fac Pharm, 9 Rue Bias, F-44035 Nantes, France.
   IFREMER, Stn Biol Marine, BP 40537, F-29185 Concarneau, France.
   Univ Naples Federico II, Dipartimento Farm, Via D Montesano 49, I-80131 Naples, Italy.
C2 IFREMER, FRANCE
   UNIV BENIN, NIGERIA
   UNIV NANTES, FRANCE
   IFREMER, FRANCE
   UNIV NAPLES FEDERICO II, ITALY
SI NANTES
   CONCARNEAU
SE PDG-ODE-DYNECO-PHYC
   PDG-ODE-LITTORAL-LERBO
   PDG-ODE-LITTORAL-PHYC
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
   copubli-univ-france
   copubli-int-hors-europe
   copubli-sud
IF 1.927
TC 12
UR https://archimer.ifremer.fr/doc/00314/42521/41893.pdf
LA English
DT Article
DE ;Dinoflagellates;Dinophysis;Phycotoxins;Untargeted analysis;Phytoplankton
AB Algal toxins may accumulate in fish and shellfish and thus cause poisoning in consumers of seafood. Such toxins and the algae producing them are regularly surveyed in many countries, including Europe, North America, Japan and others. However, very little is known regards the occurrence of such algae and their toxins in most African countries. This paper reports on a survey of phytoplankton and algal toxins in Nigerian coastal waters.  Seawater samples were obtained from four sites for phytoplankton identification, on three occasions between the middle of October 2014 and the end of February 2015 (Bar Beach and Lekki in Lagos State, Port Harcourt in Rivers State and Uyo in Akwa Ibom State). The phytoplankton community was generally dominated by diatoms and cyanobacteria; however several species of dinoflagellates were also identified: Dinophysis caudata, Lingulodinium polyedrum and two benthic species of Prorocentrum.  Passive samplers (containing Diaion® HP-20 resin) were deployed for several 1-week periods on the same four sites to obtain profiles of algal toxins present in the seawater. Quantifiable amounts of okadaic acid (OA) and pectenotoxin 2 (PTX2), as well as traces of dinophysistoxin 1 (DTX1) were detected at several sites. Highest concentrations (60 ng OA g-1 HP-20 resin) were found at Lekki and Bar Beach stations, which also had the highest salinities. Non-targeted analysis using full-scan high resolution mass spectrometry showed that algal metabolites differed from site to site and for different sampling occasions. Screening against a marine natural products database indicated the potential presence of cyanobacterial compounds in the water column, which was also consistent with phytoplankton analysis.  During this study, the occurrence of the marine dinoflagellate toxins OA and PTX2 has been demonstrated in coastal waters of Nigeria, despite unfavourable environmental conditions, with regards to the low salinities measured. Hence shellfish samples should be monitored in future to assess the risk for public health through accumulation of such toxins in seafood.
PY 2016
PD MAY
SO Toxicon
SN 0041-0101
PU Pergamon-elsevier Science Ltd
VL 114
UT 000374427400003
BP 16
EP 27
DI 10.1016/j.toxicon.2016.02.011
ID 42521
ER

EF