Massive fish death associated with the toxic cyanobacterial Planktothrix sp. bloom in the Beni-Haroun Reservoir (Algeria)

被引:9
作者
Benayache, Naila-Yasmine [1 ,2 ]
Afri-Mehennaoui, Fatima-Zohra [1 ]
Kherief-Nacereddine, Saliha [1 ]
Bao Vo-Quoc [3 ]
Hushchyna, Kateryna [3 ]
Tri Nguyen-Quang [3 ]
Bouaicha, Noureddine [2 ]
机构
[1] Univ Freres Mentouri Constantine 1, Lab Biol & Environm, Constantine 25000, Algeria
[2] Univ Paris Saclay, Lab Ecol Systemat Evolut, UMR 8079, 12 Route 128,Bat IDEEV, F-91190 Gif Sur Yvette, France
[3] Dalhousie Univ, Fac Agr, Biofluids & Biosyst Modeling Lab BBML, 39 Cox Rd, Truro Bible Hill, NS B2N 5E3, Canada
关键词
Cyanobacteria; Cyanotoxins; Planktothrix; Microcystins; Fish death; Cyprinus carpio; MICROCYSTIN-LR; HYPOPHTHALMICHTHYS-MOLITRIX; WATER; LAKE; AERUGINOSA; SALMON; TROUT; BIOACCUMULATION; HEPATOTOXINS; CYANOTOXINS;
D O I
10.1007/s11356-022-21538-7
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In July 2017, a massive bloom of the potentially toxic cyanobacterial species Planktothrix sp. was observed in the Beni-Haroun Reservoir (Algeria), which was followed by a massive fish death. Many questions were raised in association with the role of cyanotoxins and the fish massive mortality. The objective of this paper is twofold: (1) to investigate the variability of physicochemical and cyanobacterial parameters (chlorophyll-a, phycocyanin, allophycocyanin, and microcystins) throughout the period of July 2017 to June 2018; and (2) to determine the free and total MC levels in viscera and muscle tissues of the common carp (Cyprinus carpio), which are found dead in the considered reservoir in October 2017. Our results showed microcystin (MC) concentrations in water samples (by the protein phosphatase PP2A assay) had reached 651.2 ng MC-LR equiv./L. Total MC levels (free + bound) in the viscera and muscle tissues of sampled dead fish were at 960.24 and 438.54 mu g MC-LR equiv./kg dw, respectively. It is assumed that high concentrations of MC observed in the tissues of common carp induced a strong degradation of the visceral contents resulting in the complete lysis of the hepatopancreas, and presumably the massive fish death.
引用
收藏
页码:80849 / 80859
页数:11
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