Single and combined toxicity of amino-functionalized polystyrene nanoparticles with potassium dichromate and copper sulfate on brine shrimp Artemia franciscana larvae

Author(s):  
Antonio Júdson Targino Machado ◽  
Bianca Mataribu ◽  
Catarina Serrão ◽  
Leanderson da Silva Silvestre ◽  
Davi Felipe Farias ◽  
...  
2019 ◽  
Vol 675 ◽  
pp. 570-580 ◽  
Author(s):  
Inmaculada Varó ◽  
Aurora Perini ◽  
Amparo Torreblanca ◽  
Yaiza Garcia ◽  
Elisa Bergami ◽  
...  

2014 ◽  
Vol 83 (2) ◽  
pp. 95-99 ◽  
Author(s):  
Marcel Falis ◽  
Michaela Špalková ◽  
Jaroslav Legáth

Assessment of the potential risk of pesticides is an important part of registration procedures in many countries. However, risk assessment of several pesticides used during the growing season has not been carried out. The aim of this study was to investigate the effects of pesticides (azoxystrobin and glyphosate), heavy metals (cadmium chloride, potassium dichromate, zinc disulphate) and their combinations on lethality to Artemia franciscana. In total, 1,250 freshly hatched nauplii of A. franciscana were used in the study. They were placed in 125 Petri dishes (10 nauplii in one Petri dish) containing 10 ml of azoxystrobin, glyphosate, cadmium chloride, potassium dichromate and zinc sulphate separately, or their combinations; the control dish contained only sea water. Each experimental set consisted of 50 nauplii which were divided into five replicates of 10 nauplii per replicate. Live A. franciscana were counted after 24, 48, 72 and 96 h and the numbers were compared with the control group. A significant (P < 0.05) decrease in lethality was observed after exposure to azoxystrobin in combination with glyphosate after 48, 72 and 96 h of exposure, in combination with glyphosate and potassium dichromate after 48 h of exposure, and in combination with glyphosate and zinc disulphate after 48, 72 and 96 h of exposure. The results of this study provide information about the combined toxicity of pesticides used during the growing season and some heavy metals as major pollutants of the rural environment. A study of this kind has not been conducted yet. Further research for investigation of the combined toxicity of pollutants and pesticides is required.


2004 ◽  
Vol 301A (6) ◽  
pp. 542-546 ◽  
Author(s):  
Ziro Nambu ◽  
Shin Tanaka ◽  
Fumiko Nambu

2018 ◽  
Vol 1 (1) ◽  
pp. 27-36
Author(s):  
Patriciu Constantin Popovici ◽  
Viorel Robert Ancuceanu ◽  
Tudorel Octavian Olaru ◽  
Cristina-Silvia Stoicescu ◽  
Mihaela Dinu

Abstract The fern Nephrolepis exaltata (L.) Schott, fam. Nephrolepidaceae, has little traditional medicinal use. In order to estimate its potential safety, in the present study we have investigated the phytotoxicity (on Triticum aestivum L.) and toxicity on brine shrimp of extracts from plants grown hydroponically. The species identity was confirmed by macroscopic and microscopic examinations on rhizomes, rachises, pinnae and runners, using bright field and fluorescent microscopy. Biological assays were performed on aqueous and ethanol solutions of the fronds. The brine shrimp lethality assay was performed on Artemia franciscana Kellog and a phytobiological bioassay on Triticum aestivum L. Lethality, root elongation and karyokinetic film modifications were evaluated, and LC50 and IC50 values were calculated. The microscopic analysis revealed the main histo-anatomic elements: polystelic structure and hypodermis (rhizome, rachis, runners), trichomes (rachis), homogenous structure, trichomes and diacytic/anisocytic stomata (leaves). The ethanol and aqueous extracts showed low cytotoxic effects on both Triticum aestivum roots and Artemia franciscana nauplii.


2010 ◽  
Vol 02 (03) ◽  
Author(s):  
Irja Sunde Roiha Erling Otterlei ◽  
Ole Bent Samuelsen

1998 ◽  
Vol 64 (6) ◽  
pp. 2318-2322 ◽  
Author(s):  
Bruno Gomez-Gil ◽  
Maria A. Herrera-Vega ◽  
F. Alberto Abreu-Grobois ◽  
Ana Roque

ABSTRACT Two groups of nauplii from the brine shrimp (Artemia franciscana) were enriched with different bacteria, and the dynamics of bacterial uptake by the nauplii were observed. This study showed that the efficiency of Artemia nauplii in bioencapsulating bacteria strongly depends on the type of bacteria used, time of exposure, and status (live or dead) of the bacteria.


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