Co-occurrence of pectenotoxins and Dinophysis miles in an Indonesian semi-enclosed bay

Sem Likumahua; M Karin de Boer; Bernd Krock; Willem M Tatipatta; Malik S Abdul; Anita G J Buma

doi:10.1016/j.marpolbul.2022.114340

Co-occurrence of pectenotoxins and Dinophysis miles in an Indonesian semi-enclosed bay

Mar Pollut Bull. 2022 Dec;185(Pt B):114340. doi: 10.1016/j.marpolbul.2022.114340. Epub 2022 Nov 18.

Authors

Sem Likumahua¹, M Karin de Boer², Bernd Krock³, Willem M Tatipatta⁴, Malik S Abdul⁴, Anita G J Buma⁵

Affiliations

¹ Center for Isotope Research-CIO Oceans, Energy and Sustainability Research Institute Groningen, Faculty of Science and Engineering, University of Groningen, Nijenborgh 7, 9747AG Groningen, the Netherlands; Centre for Deep Sea Research, The National Research and Innovation Agency (BRIN), Jl. Y. Syaranamual Guru-guru, Poka, 97233 Ambon, Indonesia; Collaborative Research Center for Aquatic Ecosystem of Eastern Indonesia, Pattimura University, Jl. Ir. M. Putuhena, Poka, 97233 Ambon, Indonesia. Electronic address: sem.likumahua@brin.go.id.
² Center for Isotope Research-CIO Oceans, Energy and Sustainability Research Institute Groningen, Faculty of Science and Engineering, University of Groningen, Nijenborgh 7, 9747AG Groningen, the Netherlands; Beta Science Shop, Faculty of Science and Engineering, University of Groningen, Nijenborgh 6, 9747AG Groningen, the Netherlands.
³ Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany.
⁴ Centre for Deep Sea Research, The National Research and Innovation Agency (BRIN), Jl. Y. Syaranamual Guru-guru, Poka, 97233 Ambon, Indonesia.
⁵ Center for Isotope Research-CIO Oceans, Energy and Sustainability Research Institute Groningen, Faculty of Science and Engineering, University of Groningen, Nijenborgh 7, 9747AG Groningen, the Netherlands.

PMID: 36410193
DOI: 10.1016/j.marpolbul.2022.114340

Abstract

The study aims to unravel the variability of Dinophysis spp. and their alleged toxins in conjunction with environmental drivers in Ambon Bay. Phytoplankton samples, lipophilic toxins and physiochemical water properties were analysed during a 1.5-year period. Three Dinophysis species (D. miles, D. caudata, and D. acuminata) were found in plankton samples, of which D. miles was the most abundant and persistently occurring species. Pectenotoxin-2 (PTX2) and its secoacid (PTX2sa) were detected throughout, and PTX2sa levels strongly correlated with D. miles cell abundance. The toxin showed a positive correlation with temperature, which may suggest that D. miles cells contain rather constant PTX2sa during warmer months. Dissolved nitrate concentrations were found to play a major role in regulating cell abundances and toxin levels. This study adds adequate information regarding marine biotoxins and potentially toxic species for future Harmful Algal Bloom management in Ambon and Indonesia at large.

Keywords: Algal bloom; Ambon Bay; Dinophysis miles; Lipophilic; Pectenotoxins; Shellfish toxins.

MeSH terms

Bays*
Dinoflagellida*
Harmful Algal Bloom
Indonesia
Marine Toxins

Substances

Marine Toxins