Effects of the phytoplanktivorous silver carp (Hypophthalmichthys molitrixon) on plankton and the hepatotoxic microcystins in an enclosure experiment in a eutrophic lake, Lake Shichahai in Beijing

Zhang, Xia; Xie, Ping; Liang, Hao; Guo, Nining; Ying-an, Gong; Hu, Xiulin; Chen, Jun; Gao, Liang

doi:10.1016/j.aquaculture.2006.03.018

Cited by 49 publications

(44 citation statements)

References 27 publications

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“…A subchronic toxicity experiment where the phytoplanktivorous silver carp were fed with toxic fresh Microcystis viridis cells (MC-RR and -LR contents were 268-580 and 110-292 μg g − 1 DW, respectively) found that MC-LR were almost not detectable in the fish liver, and suggested that silver carp may have a mechanism to degrade MC-LR actively in the intestines and are probably more resistant to MCs than other fishes (Xie et al, 2004). Recently, Zhang et al (2006) studied the effects of the silver carp on plankton and microcystins in an enclosure experiment in a eutrophic lake and demonstrated that silver carp can be an efficient bimanipulation fish to reduce nuisance toxic cyanobacterial blooms.…”

Section: Introductionmentioning

confidence: 99%

Sequential ultrastructural and biochemical changes induced in vivo by the hepatotoxic microcystins in liver of the phytoplanktivorous silver carp Hypophthalmichthys molitrix

Xie

Li³

et al. 2007

Comparative Biochemistry and Physiology Part C: Toxicology &

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Section: Introductionmentioning

confidence: 99%

Sequential ultrastructural and biochemical changes induced in vivo by the hepatotoxic microcystins in liver of the phytoplanktivorous silver carp Hypophthalmichthys molitrix

Xie

Li³

et al. 2007

Comparative Biochemistry and Physiology Part C: Toxicology &

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“…Shen et al (2005) determined the final MC contents in muscle and liver of silver carp after 28-days' feeding experiment in two 100 L tanks using fresh Microcystis cells collected from a pond. Recently, Zhang et al (2006) studied the effects of the silver carp on plankton and microcystins in an enclosure experiment in a eutrophic lake and demonstrated that silver carp can be an efficient biomanipulation fish to reduce nuisance toxic cyanobacterial blooms. However, there is little knowledge about dynamics and distribution pattern of MC in organs of silver carp under chronic, natural exposure situations.…”

Section: Introductionmentioning

confidence: 99%

In situ studies on the bioaccumulation of microcystins in the phytoplanktivorous silver carp (Hypophthalmichthys molitrix) stocked in Lake Taihu with dense toxic Microcystis blooms

et al. 2006

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“…Some studies actually showed a decrease in total phytoplankton biomass (Zhang et al, 2006;Menezes et al, 2010), whereas others report enhanced biomass (Figueredo and Giani, 2005; this study) or no influence (Attayde et al, 2007;Okun et al, 2008;Rondel et al, 2008). Unlike T. rendalli, the exotic Oreochromis niloticus, the Nile tilapia, is a planktivore or herbivore/detritivore in African water bodies (Zengeya et al, 2011).…”

Section: Final Remarksmentioning

confidence: 90%

Tilapia rendalli increases phytoplankton biomass of a shallow tropical lake

Silva

Arcifa²,

Salazar-Torres

et al. 2014

Acta Limnol. Bras.

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Aim: This study aimed to experimentally test the influence of a planktivorous filter-feeding fish (Tilapia rendalli) on the phytoplankton dynamics of a small and shallow tropical reservoir (Lake Monte Alegre, Brazil). Adults of T. rendalli of this lake feed preferentially on phytoplankton, and we hypothesize that: I) adults of T. rendalli will decrease the phytoplankton biomass and composition through direct herbivory, and II) as it is a eutrophic system, fish would not have strong influence on phytoplankton through nutrient cycling. Methods: To evaluate these different effects on algae, a field experiment was performed in the summer period for 15 days, in mesocosms isolated from the sediment, using a control group (no fish) and a treatment group (with one fish in each mesocosm). Physical and chemical variables and phyto-and zooplankton were evaluated at the start, middle, and end of the experiment. Results: At the end of the experiment, it was observed a significant increase in ammonium concentrations and total phytoplankton biomass, Cyanobacteria and Zygnemaphyceae and all size classes except class II (20-30 µm) in the treatment group (with fish). The biomass increase of the potentially toxic cyanobacterium Cylindrospermospsis raciborskii was also observed in the fish treatment at the end of the experimental period. Conclusion: This study did not support both initial hypotheses. It supports the assertion that in tropical water bodies, with similar characteristics to the environment studied, planktivorous filter-feeding fish, such as T. rendalli, are not effective in reducing phytoplankton biomass through direct grazing, even when phytoplankton is one of their main food items. T. rendalli can contribute to the increase of phytoplankton biomass and can promote or increase the eutrophication of aquatic systems.Keywords: mesocosm experiment, exotic omnivorous fish, direct grazing, nutrient increase.Resumo: Objetivos: Este estudo visou testar experimentalmente a influência de um peixe planctófago filtrador (Tilapia rendalli) sobre a dinâmica fitoplanctônica de um reservatório tropical pequeno e raso (Lago Monte Alegre, Brasil). Adultos de T. rendalli deste lago alimentam-se preferencialmente de fitoplâncton e nossas hipóteses são: I) adultos de T. rendalli reduziriam a biomassa e composição do fitoplâncton através da herbivoria direta, e II) como este é um sistema eutrófico, o peixe poderia não ter grande influência sobre o fitoplâncton através da ciclagem de nutrientes. Métodos: para avaliar esses diferentes efeitos sobre as algas, um experimento de campo foi feito no período de verão durante 15 dias em mesocosmos isolados do sedimento, usando um grupo controle (sem peixe) e um grupo tratamento (com um peixe em cada mesocosmo). As variáveis físicas e químicas e o fito-e zooplâncton foram avaliados no início, meio e fim do experimento. Resultados: No final do experimento, foi observado um incremento significativo nas concentrações de íon amônio, biomassa fitoplanctônica total, de cianobactérias e zignemaf...

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Effects of the phytoplanktivorous silver carp (Hypophthalmichthys molitrixon) on plankton and the hepatotoxic microcystins in an enclosure experiment in a eutrophic lake, Lake Shichahai in Beijing

Cited by 49 publications

References 27 publications

Sequential ultrastructural and biochemical changes induced in vivo by the hepatotoxic microcystins in liver of the phytoplanktivorous silver carp Hypophthalmichthys molitrix

Sequential ultrastructural and biochemical changes induced in vivo by the hepatotoxic microcystins in liver of the phytoplanktivorous silver carp Hypophthalmichthys molitrix

In situ studies on the bioaccumulation of microcystins in the phytoplanktivorous silver carp (Hypophthalmichthys molitrix) stocked in Lake Taihu with dense toxic Microcystis blooms

Tilapia rendalli increases phytoplankton biomass of a shallow tropical lake

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