Microcystin bioaccumulation can cause potential mutagenic effects in farm fish

Vasconcelos, Janiele França; Barbosa, José Etham de Lucena; Lira, Walclécio Morais; Azevedo, Sandra M.F.O.

doi:10.1016/j.ejar.2013.11.002

Cited by 19 publications

(12 citation statements)

References 40 publications

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“…Till now, this species was reported as a true element of plankton in karst environments of the Yucatán peninsula, Mexico (López-Adrián & Barrientos-Medina, 2007;Tavera et al, 2013) which are rich in tropical species of cyanobacteria. This species was also reported on several localities in Brazil: in São Paulo State (Sant'Anna et al, 2004), in the Cordeiro, Camalau and Acauã Reservoirs (Vasconcelos et al, 2013) and in Minas Gerais State (Magalhães et al, 2014). It was also found in the neo-tropical, eutrophic reservoir Riogrande II in Colombia (Palacio et al, 2015), but still, up to our knowledge, it was never reported for Europe.…”

Section: Discussionmentioning

confidence: 91%

Rare occurrence of nine Microcystis species (Chroococcales, Cyanobacteria) in a single lake (Lake Dojran, fYR Macedonia)

2017

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Investigations carried out on Lake Dojran, fYR Macedonia, during the spring-autumn seasons in 2015 have been focused on detecting the degree of eutrophication in the lake, successive algal flora changes in the plankton communities and eventual presence of cyanotoxins (free microcystins) in the water. The obtained results revealed a co-existence of nine Microcystis species in the lake (M. aeruginosa, M. botrys, M. flos-aquae, M. ichthyoblabe, M. novacekii, M. protocystis, M. smithii, M. viridis and M. wesenbergii), with domination of the pan and neo-tropical species M. protocystis, again confirmed in a European lake. Results also corroborate the necessity to change the accepted morphospecies concept into separation of Microcystis taxa as distinct species which are clearly delimited according to their constant morphological features. Toxicity analyses demand for a specific and targeted investigation, since the toxin production and presence depends on many factors, and the toxin dynamics including the highest peaks may be easily overlooked if other issues are in the focus of the performed monitoring. Detected values for free microcystins in the water reached 2.84 µg L -1 microcystin-LR equivalents.

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Section: Discussionmentioning

confidence: 91%

Rare occurrence of nine Microcystis species (Chroococcales, Cyanobacteria) in a single lake (Lake Dojran, fYR Macedonia)

2017

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“…These substances associated with the high temperatures favoring an increase in the density of phytoplankton, particularly cyanobacteria blooms (PADISÁK, 1998;CHORUS & BARTRAM, 1999, REYNOLDS et al 2002. However one of the most damaging consequences of blooms of cyanobacteria is the incorporation of cyanotoxins in different trophic levels (plankton, fish and man) (MAGALHÃES et al, 2001;VASCONCELOS et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

Microcystin Accumulation and Potential Depuration on Muscle of Fishes of Fish Farm: Implications to Public Health

Mendes¹,

Barbosa²,

Nery³

2016

International Journal of Innovative Studies in Aquatic Biology

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This study investigated the bioaccumulation of microcystin on muscle of O. niloticus of fish farms of Brazilian semiarid reservoirs and their potential depuration of MCYST on fish's muscle during ontogenetic fish development. Only one sampling was conducted in January 2012 in the five reservoirs located at Braziliam semiarid region. MCYST were detected in the waters of the all reservoirs and in 60% of the fish muscle samples. Significant differences were observed in MCYST concentrations for fish ontogenetic stages (p<0,05). Most MCYST concentration were observe in early fish stages. For an adult human weighing 60 kg ingesting 300g of fish muscle this MYCST level at fish on early fish stage phase represents an estimated daily intake (EDI) of 0,02 μg/kg of body weight. In juvenile and adults the levels of MCYST represent a daily intake of 0,005 and 0,001 μg/kg respectively, and np represent risk for consumers. However should be avoided consumption of fish when it confirmed the presence of microcystin already in the water. Both the control of eutrophication and the proper management of fish farming activity can serve as preventive measures in controlling algal blooms and their consequent risks to public health.

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“…Therefore, they cause changes in the trophic levels and adverse impacts on the functioning of freshwater ecosystems. This begins with the zooplankton community, which has its composition changed, especially by the mortality of certain species resulting therefore in the reduction of their diversity [59,109,116,117]. For example, the copepod Diaptomus birgei was the most sensitive to microcystins with a lethal concentration (LC 50 ) at 48 h of 0.45 to 1.0 μg mL −1 followed by the cladoceran Daphnia pulex, D. hyaline, and D. pulicaria with LC 50 at 48 h of 9.6, 11.6, and 21.4 μg L −1 , respectively [109].…”

Section: Acute Effectsmentioning

confidence: 99%

An Overview of Cyanobacteria Harmful Algal Bloom (CyanoHAB) Issues in Freshwater Ecosystems

Benayache¹,

Nguyen-Quang²,

Hushchyna³

et al. 2019

Limnology - Some New Aspects of Inland Water Ecology

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This chapter will present an overview of cyanobacterial harmful algal blooms (cyano-HABs) and biotic and abiotic factors, as well as various aspects associated with these worldwide ecological bursts. The exact causes of the cyanoHABs are still not well defined, but eutrophication and climate change (temperature increase, light intensity variation, etc.) are the two assumed main factors that may promote the proliferation and expansion of cyanobacterial blooms. However, these premises need to be profoundly investigated as the optimal combination of all factors such as increased nutrient loading, physiological characteristics of cyanobacterial species, and climate effects which could lead to the blooming pattern will require robust modeling approaches to predict the phenomena. Negative issues associated with cyanoHABs are diverse including the toxic products (cyanotoxins) released by certain taxa which can damage the health of humans and animal habitats around the related watershed as well as generate a huge water quality problem for aquatic industries.

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Microcystin bioaccumulation can cause potential mutagenic effects in farm fish

Cited by 19 publications

References 40 publications

Rare occurrence of nine Microcystis species (Chroococcales, Cyanobacteria) in a single lake (Lake Dojran, fYR Macedonia)

Rare occurrence of nine Microcystis species (Chroococcales, Cyanobacteria) in a single lake (Lake Dojran, fYR Macedonia)

Microcystin Accumulation and Potential Depuration on Muscle of Fishes of Fish Farm: Implications to Public Health

An Overview of Cyanobacteria Harmful Algal Bloom (CyanoHAB) Issues in Freshwater Ecosystems

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