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Sardenne F, Le Loc'h F, Bodin N, Mve-Beh JH, Munaron JM, Mbega JD, Nzigou AR, Sadio O, Budzinski H, Leboulanger C. Persistent organic pollutants and trace metals in selected marine organisms from the Akanda National Park, Gabon (Central Africa). MARINE POLLUTION BULLETIN 2024; 199:116009. [PMID: 38217912 DOI: 10.1016/j.marpolbul.2023.116009] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 12/08/2023] [Accepted: 12/27/2023] [Indexed: 01/15/2024]
Abstract
Akanda National Park (ANP) is composed of mangrove ecosystems bordering Libreville, Gabon's capital. The contamination of aquatic resources from the ANP by persistent organic pollutants (POPs) and trace metals (TMs) was never evaluated. To provide a basis for their monitoring in the ANP, five species (two fish, two mollusks, and one crustacean) were analyzed from three sampling sites in 2017. Contamination levels for POPs and TMs were below maximum acceptable limits for seafood, including Cd and Pb. No DDT was found in any sample. Inter-specific differences were more obvious than the differences among sites, although the results may be biased by an unbalanced sampling design. The oyster Crassostrea gasar was the most contaminated species, making this species a good candidate to assess environmental contamination in the area. The studied species also contained essential elements, such as Fe, Zn and Mn at interesting levels in a nutritional point of view.
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Affiliation(s)
- Fany Sardenne
- IRD, Univ Brest, CNRS, Ifremer, LEMAR, IUEM, F-29280 Plouzané, France.
| | - François Le Loc'h
- IRD, Univ Brest, CNRS, Ifremer, LEMAR, IUEM, F-29280 Plouzané, France
| | - Nathalie Bodin
- Sustainable Ocean Seychelles, BeauBelle, Mahé, Seychelles
| | - Jean-Hervé Mve-Beh
- IRD, Univ Brest, CNRS, Ifremer, LEMAR, IUEM, F-29280 Plouzané, France; Institut de Recherches Agronomiques et Forestières, CENAREST (Laboratoire d'Hydrobiologie et d'Ichtyologie), BP 2246 Libreville, Gabon
| | | | - Jean-Daniel Mbega
- Institut de Recherches Agronomiques et Forestières, CENAREST (Laboratoire d'Hydrobiologie et d'Ichtyologie), BP 2246 Libreville, Gabon
| | | | - Oumar Sadio
- IRD, Univ Brest, CNRS, Ifremer, LEMAR, Dakar, Sénégal
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Le ND, Hoang TTH, Nguyen TMH, Rochelle-Newall E, Pham TMH, Phung TXB, Duong TT, Nguyen TAH, Dinh LM, Duong TN, Nguyen TD, Le TPQ. Microbial contamination in the coastal aquaculture zone of the Ba Lat river mouth, Vietnam. MARINE POLLUTION BULLETIN 2023; 192:115078. [PMID: 37210986 DOI: 10.1016/j.marpolbul.2023.115078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 05/09/2023] [Accepted: 05/15/2023] [Indexed: 05/23/2023]
Abstract
Contamination of aquaculture products by pathogenic organisms is a major concern in areas where this activity is of high economic importance. The abundances of total coliforms (TC), Escherichia coli (EC) and faecal streptococci (FS) (in CFU.100 mL-1) in seawater in the Red River coastal aquaculture zone were determined. The results showed TC numbers (200 to 9100; average 1822), EC (<100 to 3400; average 469) and FS (<100 to 2100; average 384), of which TC exceeded the allowable threshold of the Vietnam regulation for coastal aquaculture water. TC and EC numbers in 4 wastewater types (domestic, livestock farming sewage, agricultural runoff, and mixed sewage canals) were investigated and revealed the importance of point sources of faecal contamination in seawater. These results underline the need to reduce the release of untreated wastewater and to put into place seawater microbial quality monitoring in areas where the development of sustainable aquaculture is an objective.
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Affiliation(s)
- Nhu Da Le
- Laboratory of Environmental Chemistry, Institute of Natural Product Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, Viet Nam; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, Viet Nam.
| | - Thi Thu Ha Hoang
- Laboratory of Environmental Chemistry, Institute of Natural Product Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, Viet Nam
| | - Thi Mai Huong Nguyen
- Laboratory of Environmental Chemistry, Institute of Natural Product Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, Viet Nam
| | - Emma Rochelle-Newall
- Institute of Ecology and Environmental Sciences of Paris (iEES-Paris), Sorbonne University, University Paris-Est Créteil, IRD, CNRS, INRA, Paris, France
| | - Thi Minh Hanh Pham
- Institute of Mechanics, Vietnam Academy of Science and Technology, 264 Doi Can, Ba Dinh, Hanoi, Viet Nam
| | - Thi Xuan Binh Phung
- Electric Power University, 235 Hoang Quoc Viet, Bac Tu Liem, Hanoi, Viet Nam
| | - Thi Thuy Duong
- Institute of Environmental Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, Viet Nam
| | - Thi Anh Huong Nguyen
- University of Science, Vietnam National University, Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Viet Nam
| | - Le Minh Dinh
- University of Science, Vietnam National University, Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Viet Nam
| | - Thanh Nghi Duong
- Institute of Marine Environment and Natural Resources, Vietnam Academy of Science and Technology, Hai Phong, Viet Nam
| | - Tien Dat Nguyen
- Center for Research and Technology Transfer, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Viet Nam
| | - Thi Phuong Quynh Le
- Laboratory of Environmental Chemistry, Institute of Natural Product Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, Viet Nam; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, Viet Nam.
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You S, Huang X, Xing L, Lesperance M, LeBlanc C, Moccia LP, Mercier V, Shao X, Pan Y, Zhang X. Dynamics of fecal coliform bacteria along Canada's coast. MARINE POLLUTION BULLETIN 2023; 189:114712. [PMID: 36827773 DOI: 10.1016/j.marpolbul.2023.114712] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 01/15/2023] [Accepted: 02/04/2023] [Indexed: 06/18/2023]
Abstract
The vast coastline provides Canada with a flourishing seafood industry including bivalve shellfish production. To sustain a healthy bivalve molluscan shellfish production, the Canadian Shellfish Sanitation Program was established to monitor the health of shellfish harvesting habitats, and fecal coliform bacteria data have been collected at nearly 15,000 marine sample sites across six coastal provinces in Canada since 1979. We applied Functional Principal Component Analysis and subsequent correlation analyses to find annual variation patterns of bacteria levels at sites in each province. The overall magnitude and the seasonality of fecal contamination were modelled by functional principal component one and two, respectively. The amplitude was related to human and warm-blooded animal activities; the seasonality was strongly correlated with river discharge driven by precipitation and snow melt in British Columbia, but such correlation in provinces along the Atlantic coast could not be properly evaluated due to lack of data during winter.
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Affiliation(s)
- Shuai You
- University of Victoria, 3800 Finnerty Road, Victoria, BC V8W 2Y2, Canada.
| | - Xiaolin Huang
- University of Victoria, 3800 Finnerty Road, Victoria, BC V8W 2Y2, Canada.
| | - Li Xing
- University of Saskatchewan, 105 Administration Place, Saskatoon, Saskatchewan S7N 5A2, Canada.
| | - Mary Lesperance
- University of Victoria, 3800 Finnerty Road, Victoria, BC V8W 2Y2, Canada.
| | - Charles LeBlanc
- Shellfish Water Classification Program - Atlantic Region, Environment and Climate Change Canada, Government of Canada, 443 University Ave., Moncton, NB E1A 3E9, Canada.
| | - L Paul Moccia
- Shellfish Water Classification Program - Pacific Region, Environment and Climate Change Canada, Government of Canada, 2645 Dollarton Highway, Vancouver, BC V7H 1B1, Canada.
| | - Vincent Mercier
- National Coordination, Environment and Climate Change Canada, Government of Canada, 443 University Ave., Moncton, NB E1A 3E9, Canada.
| | - Xiaojian Shao
- Digital Technologies Research Centre, National Research Council Canada, 1200 Montreal Road, Ottawa, ON K1A 0R6, Canada.
| | - Youlian Pan
- Digital Technologies Research Centre, National Research Council Canada, 1200 Montreal Road, Ottawa, ON K1A 0R6, Canada.
| | - Xuekui Zhang
- University of Victoria, 3800 Finnerty Road, Victoria, BC V8W 2Y2, Canada.
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