Development of a multispecies system for testing reproductive effects on aquatic invertebrates. Experience with Daphnia magna, Chironomus prasinus and Lymnaea peregra

2002 ◽  
Vol 60 (3-4) ◽  
pp. 249-256 ◽  
Author(s):  
Paloma Sánchez ◽  
José V Tarazona
Author(s):  
Ivo Sukop

The qualitative composition of aquatic invertebrates and zooplankton abundance of the Mikulovské rybníky ponds is presented in the study. Size and species composition of zooplankton in studied ponds was influenced by high fish stocks in 1992–1994. In many cases, small taxa (Rotatoria, copepod Acanthocyclops robustus and cladoceran Bosmina longirostris) formed the zooplankton assemblage. Large zooplankton species (e.g. Daphnia magna) dominated only occasionaly and exclusively in ponds with low fish stock.


Author(s):  
Mina Jo ◽  
Sangwoo Lee ◽  
Seokjoo Yoon ◽  
Woo-Keun Kim

2009 ◽  
Vol 28 (10) ◽  
pp. 2150 ◽  
Author(s):  
Rachid Manar ◽  
Hlima Bessi ◽  
Paule Vasseur

2017 ◽  
Vol 24 (1) ◽  
pp. 47-68 ◽  
Author(s):  
Marlena Piontek ◽  
Wanda Czyżewska

Abstract The issues presented in this study concern a very important problem of the occurrence of cyanobacterial blooms in surface water used for water supply purposes. The objective of this study was to analyze the occurrence of cyanotoxic risk in the catchment area of the Obrzyca River (including Sławskie lake which is the beginning of the river), which is a source of drinking water for the inhabitants of Zielona Góra. In order to evaluate toxicity of cyanobacterial bloom it was conducted toxicological testing using aquatic invertebrates (Daphnia magna, Dugesia tigrina) and heterotrophic bacteria (Escherichia coli, Enterococcus faecalis, Pseudomonas fluorescens). Test samples were collected from May to October, 2012. The most toxic was a sample collected from Lake Sławskie on 20th October when cyanobacteria bloom with a predominance of Microcystis aeruginosa occurred and the amount of microcystins was the largest. The methanol extract of the sample was toxic only above a concentration of 6·103 mg·dm-3. The lethal concentration (48-h LC 50) for Daphnia magna was 3.09·103 and for Dugesia tigrina (240-h LC 50) 1.51·103 mg·dm-3 of microcystins (MC-LR, MC-YR and MC-RR). The same extract stimulated growth of Escherichia coli and Enterococcus faecalis cells.


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