scholarly journals MUTAGENESIS IN Tradescantia pallida AS A BIOMARKER OF THE EFFECTS OF WATER POLLUTED WITH URBAN EFFLUENT

2014 ◽  
Vol 14 (1) ◽  
pp. 97 ◽  
Author(s):  
Ana Lúzia de Souza Araújo ◽  
Eliane Tigre Guimarães ◽  
Robson Seriani
Keyword(s):  
Positive Control ◽  
Negative Control ◽  
Sao Paulo ◽  
Distilled Water ◽  
Paulo State ◽  
Tietê River ◽  
Significant Difference ◽  
Tradescantia Pallida ◽  
São Paulo State ◽  
Urban Effluent

The present paper evaluated the toxicity of effluent released into the Tiete River, in Barra Bonita City, São Paulo State, using the test micronucleus with Tradescantia pallida. Young inflorescences of T. pallida (n = 20) were partially immersed in one of three treatments: water containing effluent, a positive control (0.1% formaldehyde), and a negative control (distilled water). The results showed a statistically significant difference (p < 0.05) between groups, indicating the genotoxicity of the effluent.

Metal and trace element assessments of bottom sediments from medium Tietê River basin, Sao Paulo State, Brazil: part II

2018 ◽  
Vol 316 (2) ◽  
pp. 805-818 ◽  
Author(s):  
D. I. T. Favaro ◽  
F. R. Rocha ◽  
M. Angelini ◽  
H. R. A Henriques ◽  
J. S. Soares ◽  
...  
Keyword(s):  
Trace Element ◽  
River Basin ◽  
Bottom Sediments ◽  
Sao Paulo ◽  
São Paulo ◽  
Paulo State ◽  
Tietê River ◽  
São Paulo State

scholarly journals Controlling bovine brucellosis in the state of São Paulo, Brazil: results after ten years of a vaccination program

2016 ◽  
Vol 37 (5Supl2) ◽  
pp. 3505 ◽  
Author(s):  
Ricardo Augusto Dias ◽  
Ana Paula Cunha Belchior ◽  
Rodrigo De Souza Ferreira ◽  
Rita Coelho Gonçalves ◽  
Ricardo Souza Costa Barão de Aguiar ◽  
...  
Keyword(s):  
Confidence Interval ◽  
Sao Paulo ◽  
The State ◽  
Vaccination Program ◽  
São Paulo ◽  
Bovine Brucellosis ◽  
Paulo State ◽  
Significant Difference ◽  
Strain Vaccine ◽  
São Paulo State

A cross- sectional study was carried out, between May and November 2011, to estimate the situation of the bovine brucellosis in São Paulo State, 10 years after the commencement of the vaccination of the heifers with the S19 strain. The State was divided into seven regions and in each of them, 300 farms with reproductive activity were randomly chosen and considered as primary sample units. A fixed number of cows was randomly selected and tested for antibodies against Brucella spp. A farm was considered infected if at least one female tested positive. In the selected farms, an epidemiological questionnaire was administered which focused on herd traits as well as husbandry and sanitary practices that could be associated with the risk of infection. The prevalence (percentile, [95% confidence interval]) of infected herds was 10.2% [8.8-11.8] for the State, and for the regions, it varied from 7.3% [4.7-11.2] to 12.3% [8.8-16.8], not showing significant difference between different regions. The apparent prevalence of positive farms in the State and regions remained similar to the prevalence observed 10 years before. The prevalence of positive animals was 2.4% [1.8-3.1] in the State and varied from 1.1% [0.6-2] to 3.5% [1.7-7.1] in the regions, not showing significant difference between regions. Again, there was no difference in the prevalence of positive animals after 10 years of the vaccination program. The risk factors (odds ratio, 95% confidence interval) associated with bovine brucellosis in the State included number of cows ? 24 (3.08, 2.22-4.27) and the acquisition of breeding animals (1.33, 0.95-1.87). The São Paulo State should conduct systematic vaccination coverage of above 80% of the eligible heifers with the S19 strain vaccine annually. Moreover, the State should emphatically use RB51 strain vaccine in females above 8 months of age not vaccinated with S19 strain vaccine. An efficient animal health education program to orientate farmers to test replacement animals for brucellosis prior to introduction in their herds should also be implemented.

scholarly journals First occurrence of Limnoperna fortunei (Dunker, 1857) in the Rio Tietê watershed (São Paulo State, Brazil)

2008 ◽  
Vol 68 (4 suppl) ◽  
pp. 1107-1114 ◽  
Author(s):  
DC. Pareschi ◽  
T. Matsumura-Tundisi ◽  
GR. Medeiros ◽  
AP. Luzia ◽  
JG. Tundisi
Keyword(s):  
Geographical Distribution ◽  
Food Chain ◽  
Sao Paulo ◽  
São Paulo ◽  
Limnoperna Fortunei ◽  
Paulo State ◽  
Tietê River ◽  
Ecological Implications ◽  
First Occurrence ◽  
São Paulo State

This paper describes the recent expansion of the geographical distribution of Limnoperna fortunei (Dunker, 1857) in the Tietê River watershed, São Paulo State, Brazil. Estimations related to the velocity of invasion and its causes are presented. Ecological implications related to biodiversity and possible changes in the food chain are discussed.

scholarly journals Size and dry weight of main zooplankton species in Bariri reservoir (SP, Brazil)

2008 ◽  
Vol 68 (1) ◽  
pp. 69-75 ◽  
Author(s):  
EJ. González ◽  
Matsumura-Tundisi ◽  
JG. Tundisi
Keyword(s):  
Weight Distribution ◽  
Secondary Production ◽  
Dry Weight ◽  
Sao Paulo ◽  
Copepod Species ◽  
Zooplankton Species ◽  
Production Studies ◽  
Paulo State ◽  
Tietê River ◽  
São Paulo State

In order to generate a database for secondary production studies in the São Paulo State (Brazil) reservoirs, the size and dry weight of 13 zooplankton species from Bariri reservoir (middle Tietê River) were determined. Diameter and dry weight of eggs from some cladoceran and copepod species were also determined. Sizes varied from 108.6 mm (Keratella tropica) to 2488.6 µm (females of Argyrodiaptomus azevedoi), while dry weights varied between 0.025 µg (K. tropica) and 51.250 µg (females of A. azevedoi). Egg diameters varied between 75.0 µm (Mesocyclops ogunnus) and 171.8 µm (Ceriodaphnia silvestrii), while egg dry-weights varied between 0.074 µg (Acanthocyclops robustus) and 0.865 µg (Bosmina hagmanni). Size and dry weight distribution of the zooplanktonic organisms was not linear in the Bariri reservoir.

scholarly journals Infection levels of Austrodiplostomum compactum (Digenea, Diplostomidae) metacercariae in Plagioscion squamosissimus (Teleostei, Sciaenidae) from the Nova Avanhandava reservoir, São Paulo State, Brazil

2009 ◽  
Vol 84 (3) ◽  
pp. 284-291 ◽  
Author(s):  
J.V.K. Paes ◽  
E.D. Carvalho ◽  
R.J. da Silva
Keyword(s):  
Condition Factor ◽  
Parasitic Infection ◽  
Sao Paulo ◽  
São Paulo ◽  
Intensity Of Infection ◽  
Paulo State ◽  
Tietê River ◽  
Relative Condition Factor ◽  
High Prevalence ◽  
São Paulo State

AbstractThis study was aimed at evaluating the infection levels of Austrodiplostomum compactum metacercariae in 378 specimens of Plagioscion squamosissimus (‘corvina’ or ‘pescada branca’) from the Nova Avanhandava reservoir, low Tietê River, São Paulo State, Brazil. High prevalence, mean intensity of infection and abundance were observed in P. squamosissimus during most of the study, with the exception of March 2004. The relative condition factor (Kn) did not differ between parasitized and non-parasitized fish. A statistically significant positive correlation was observed between host standard length and intensity of infection. The analysis of biotic and abiotic variables showed that no abiotic variable correlated with parasitic infection levels. Moreover, P. squamosissimus status was demonstrated to be unaffected by A. compactum metacercariae infection.

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