Question
How do different freshwater algae species specifically respond to water pollutants?
I need related studies using freshwater algae biological indicator of water quality for writing an article for publication
All Answers (5)
-
I´d like to recommend a paper:
Title: Water quality, toxicity and gill lesions caused by intraperitoneally administered water-bloom crude extract in Brycon cephalus (Günter, 1896; Characidae) from fee-fishing ponds in São Paulo state, Brazil
Autors: Eler, MN., Campagna, AF., Minillo, A., Ribeiro, MAP. and Espíndola, ELG.
Link: http://www.ablimno.org.br/acta/pdf/v21n1_210107.pdf
Abstract: Aim: The aim of this study was to evaluate the water quality, cyanobacteria toxins in a water-bloom and acute toxicity of intraperitoneally administered crude extract of water-bloom to Brycon cephalus (Günter, 1896; Characidae), as well as the histological changes of the gill tissues of fish exposed for 26 hours. Methods: B. cephalus is a native Brazilian fish, popular with anglers. Samples were collected from two ponds (fishing and hatchery) from fee-fishing facilities located in the Mogi-Guaçu basin, SP, Brazil. The physical, chemical and biological parameters were measured. The Elisa competitive immunoassay was used to ascertain the microcystin content in intracellular cyanobacteria water-bloom samples from Hatchery Pond (HP), and tissue sections were stained with haematoxylin-eosin and examined using light microscopy. Results: According to the Modified Carlson Index, both ponds were classified as being hyper-eutrophic (>80), with chlorophyll-a of 327.4- 420.6 μg.L–1, TP of 248-340 μg.L–1, and Secchi disc depth of 50-30 cm). The Elisa technique showed evidence of microcystin-LR in the water bloom (242 μg.g–1p.s). There were two species of Anabaena; two of Aphanocapsa; one each of Aphanotece sp.; and Cylindorospermopsis rarciborkii, and four species of Microcystis. In a 26 hours laboratory acute test, doses of 1000, 500, 250 and 125 ug.kg–1 of crud extract caused 100, 80, 60 and 20% mortality in B. cephalus. The LC50 was 229 mg.kg–1 of fish body weight. No histopathological changes were found in the control fish. The results showed that the gills exposed to the different concentrations of crude extract suffered modified morphology, lesions, total fusion of lamellae, dilated sanguineous capillaries of secondary lamellae and displacement of the epithelium. Conclusions: We suggest that fish farms and fee- fishing facilities should be monitored for algae blooms, to minimize the exposure of fish to potent cyanotoxins and the probability of fish kills as a consequence of biologics intoxication.
Keywords: cyanobacteria bloom, fee-fishing ponds, toxicity, mycrocistin, gill lesion, Brycon cephalus. -
Title: Phytoplankton community: indicator of water quality in the Armando Ribeiro Gonçalves Reservoir and Pataxó Channel, Rio Grande do Norte, Brazil
Autors : Chellappa, NT.; Câmara, FRA.; Rocha, O.
Link: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842009000200003
Abstract: The current study analysed spatial-temporal modifications of the phytoplankton community and water quality, during dry and wet seasons. The phytoplankton community was studied in three areas: Armando Ribeiro Gonçalves Reservoir (ARG), which is an important public use reservoir in RN, Pataxó Channel (PC-before water treatment), Itajá, RN, and after the water treatment (WTP). Water samples from the reservoir were collected during both dry (January, February and November, 2006) and wet seasons (March to June, 2006). Quali-quantitative analyses of phytoplankton were carried out. Results indicated a qualitative similarity of the phytoplankton community in the three areas. However, significant differences were registered in these areas in relation to species relative abundance, with dominance of potentially toxic cyanobacteria, such as Planktothrix agardhii Gomont (dry season) and Microcystis aeruginosa Kutz (wet season). Ecological indexes obtained higher values before water treatment. Nevertheless, densities of cyanobacteria (organisms/mL) gradually reduced in the waters of the reservoir and of the Pataxó Channel before and after water treatment. After the treatment, density values of cyanobacteria were adequate for human consumption, according to the values established by the Health Ministry.
Keywords: Pataxó Channel/RN, Phytoplankton, biological indicator, water quality. -
One more. Dear colegue,
If you could not get the papers by link, let me know this and send your e-mail, and I will send you them in pdf.
Title: Biological indices for classification of water quality around Mae Moh power plant, Thailand
Link: http://www.mijst.mju.ac.th/vol2/24-36.pdf
Mj. Int. J. Sci. Tech. 2008, 2(01), 24-36
Autors: Pongsarun Junshum, Somporn Choonluchanon, and Siripen Traichaiyaporn
Abstract: The algal communities and water quality were monitored at eight sampling sites around Mae Moh power plant during January-December 2003. Three biological indices, viz. algal genus pollution index, saprobic index, and Shannon-Weaver index, were adopted to classify the water quality around the power plant in comparison with the measured physicochemical water quality. The result shows that the Shannon-Weaver diversity index appears to be much more applicable and interpretable for the classification of water quality around the Mae Moh power plant than the algal genus pollution index and the saprobic index.
Keywords: algae, algal genus pollution index, biological indices, Mae Moh power plant, saprobic index, Shannon-Weaver index, water quality -
If it is not too late, I can send you a copy of "Selection of strains of microalgae to be utilized in toxicity bioassays", Gayana Oceanologia 6(1-2):1-9, 1998. ebayschm@udec.cl -
Thank you very much for your replies, these will help me a lot
