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Yao EK, Ahoutou MK, Olokotum M, Hamlaoui S, Lance E, Marie B, Bernard C, Djeha RY, Quiblier C, Humbert JF, Coulibaly JK. Assessment of cyanotoxins in water and fish in an African freshwater lagoon (Lagoon Aghien, Ivory Coast) and the application of WHO guidelines. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:97857-97871. [PMID: 37603248 DOI: 10.1007/s11356-023-29025-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 07/24/2023] [Indexed: 08/22/2023]
Abstract
In comparison with northern countries, limited data are available on the occurrence and potential toxicity of cyanobacterial blooms in lakes and ponds in sub-Saharan countries. With the aim of enhancing our knowledge on cyanobacteria and their toxins in Africa, we performed a 17-month monitoring of a freshwater ecosystem, Lagoon Aghien (Ivory Coast), which is used for multiple practices by riverine populations and for drinking water production in Abidjan city. The richness and diversity of the cyanobacterial community were high and displayed few variations during the entire survey. The monthly average abundances ranged from 4.1 × 104 to 1.8 × 105 cell mL-1, with higher abundances recorded during the dry seasons. Among the five cyanotoxin families analyzed (anatoxin-a, cylindrospermopsin, homoanatoxin, microcystins, saxitoxin), only microcystins (MC) were detected with concentrations ranging from 0 to 0.364 μg L-1 in phytoplankton cells, from 32 to 1092 μg fresh weight (FW) kg-1 in fish intestines, and from 33 to 383 μg FW kg-1 in fish livers. Even if the MC concentrations in water and fish are low, usually below the thresholds defined in WHO guidelines, these data raise the issue of the relevance of these WHO guidelines for sub-Saharan Africa, where local populations are exposed throughout the year to these toxins in multiple ways.
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Affiliation(s)
| | - Mathias Koffi Ahoutou
- Institut Pasteur de Côte d'Ivoire, Abidjan, Côte d'Ivoire
- Université Jean Lorougnon Guédé, Daloa, Côte d'Ivoire
| | - Mark Olokotum
- National Fisheries Resources Research Institute, Jinja, Uganda
- Department of Zoology, Entomology and Fisheries Sciences, Makerere University, Kampala, Uganda
| | - Sahima Hamlaoui
- UMR Molécules de Communication et Adaptation des Micro-organismes, Muséum d'Histoire Naturelle de Paris, Paris, France
| | - Emilie Lance
- UMR Molécules de Communication et Adaptation des Micro-organismes, Muséum d'Histoire Naturelle de Paris, Paris, France
- UMR Stress environnementaux et biosurveillance des milieux aquatiques, Université de Reims Champagne-Ardenne, Reims, France
| | - Benjamin Marie
- UMR Molécules de Communication et Adaptation des Micro-organismes, Muséum d'Histoire Naturelle de Paris, Paris, France
| | - Cécile Bernard
- UMR Molécules de Communication et Adaptation des Micro-organismes, Muséum d'Histoire Naturelle de Paris, Paris, France
| | | | - Catherine Quiblier
- UMR Molécules de Communication et Adaptation des Micro-organismes, Muséum d'Histoire Naturelle de Paris, Paris, France
- Université Paris Cité, Paris, France
| | - Jean-François Humbert
- Centre Île-de-France-Versailles-Grignon, Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement, Paris, France.
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Moore C. Invited Perspective: Decentralized CyanoHAB Monitoring Is Needed to Understand Public Health Risks. ENVIRONMENTAL HEALTH PERSPECTIVES 2023; 131:61306. [PMID: 37342991 PMCID: PMC10284345 DOI: 10.1289/ehp12948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/23/2023]
Affiliation(s)
- Caroline Moore
- San Diego Zoo Wildlife Alliance, San Diego, California, USA
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Wildlife Disease Monitoring: Methods and Perspectives. Animals (Basel) 2022; 12:ani12213032. [PMID: 36359156 PMCID: PMC9659093 DOI: 10.3390/ani12213032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 10/25/2022] [Accepted: 11/01/2022] [Indexed: 11/06/2022] Open
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