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    Self organizing map of artificial neural network for groundwater quality classification in the F'kirina plain (Oum El Bouaghi province-NE of Algeria)
    (researchgate, 2017-12-16) Ouanes miyada; Belgacem Houha
    Abstract The topological Self-Organizing Maps of Kohonen and other methods of artificial intelligence are effective tools for modeling and solving environmental problems. In this study, we propose an approach to classify the annual physico-chemical parameters of subterranean waters in the F'kirina plain based on the artificial neural network type. The results obtained demonstrate the presence of 4 classes and make it possible to clearly understand and visualize the spatial and temporal distribution of the physicochemical quality of subterranean waters. Class 1 shows high concentrations for all parameters, whereas class 3 is represented by very low concentrations
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    Some Physiological and Biochemical Effects of NaCl Salinity on Durum Wheat (Triticum durum Desf.)
    (Advances in Biological Research, 2011) Azzedine Fercha
    Abstract: The main objective of this study was to examine the effects of NaCl on the leaf growth and some physiological and biochemical characteristics of an Algerian durum wheat (var. Waha) landrace. NaCl (150 mM),as compared to control plants, significantly reduced all the leaf-growth parameters as leaf area (33%), leaf dry weight (41%) and leaf fresh weight (32%), but did not induce any change in the leaf succulence and, consequently, in the leaf RWC. On the other hand, NaCl salinity induced the accumulation of proline (2.25 fold, P<0.05) and soluble sugars (60%, P<0.01) in the leaves of durum wheat seedlings. However, while photosynthetic pigments content do not undergo important change, total carotenoids content decreased (14%) under salt stress conditions. NaCl treatment enhanced significantly the accumulation of H2O2 (4.0-fold, P<0.01) and led to lipid peroxidation. All of these parameters and the interaction among them were analyzed usingANOVA and multiple correlation analysis. The importance of the interactions between osmolytes andantioxidants in determining the salt tolerance of durum wheat was discussed.
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    Comparative study of the Environmental impact on the nutritional quality of Durum Wheat (Triticum durum Desf.)
    (Copyright@ EM International, 2021-03-08) Azzedine Fercha
    ABSTRACT In this study, we set out to assess the impact of environment (Khenchela vs. Constantine) on the nutritional qualities of two durum wheat genotypes grown extensively in Algeria (Waha vs. GTA- dur). Based on our results, the absence of an ‘Environmental’ effect upon the content of insoluble proteins, TKW (Thousand Kernel Weight), and in the absence of qualitative analysis of insoluble proteins (electrophoresis analysis), we concluded that these parameters are not very associated with culture conditions in both regions (soil type, farming practices, etc.), which does not seem to be stressful for the cultivation of wheat. However, the variation of the content of the wheat grains in soluble sugars and soluble proteins appear to reflect better the impact of changing environment upon the composition of the nutrient grains and therefore the quality of this preferred nutritional foodstuff of all Algerians in particular as couscous and porridge.
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    Antimicrobial Activity of Xerophytic Plant (Cotula cinerea Delile) Extracts Against Some Pathogenic Bacteria and Fungi
    (Jordan Journal of Biological Sciences, 2013-05-30) Djamel Bensizerara
    Abstract In the present investigation, an Algerian commonly available plant namely Cotula cinerea, found throughout sandy desert grounds, was screening for antimicrobial activity against five different human pathogenic microbes namely, Staphylococcus aureus, Klebsiella pneumoniae, Pseudomonas aeruginosa, Escherichia coli and Candida albicans. The antimicrobial activity was evaluated using the agar disc diffusion method. Aerial parts of C. cinerea were subjected to extraction using four solvents of different polarity (70% ethanol, n-butanol, ethyl acetate and petroleum ether). Petroleum ether and n-butanol extracts had the most effective antimicrobial activity with Gram-negative K. pneumoniae demonstrating the highest susceptibility. Linear regression analysis was performed to find correlations between extract concentrations and inhibition activity. Results showed a s ignificant increase in mean diameter of inhibition zone with increasing extract concentrations of all solvents except n-butanol. Two-way ANOVA test was used to compare the effect of C. cinerea extracts on the antimicrobial properties. All plant extracts have shown significant differences in their actions as antimicrobial agents. Indeed, the n-butanol extract at a low concentration of 0.25 mg mL-1 indicated a potent antimicrobial activity of C. cinerea extracts
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    Ecological status interactions for assessing bird diversity in relation to a heterogeneous landscape structure
    (Assessing bi AVIAN BIOLOGY RESEARCH, 2013) Djamel Bensizerara
    Avian diversity is used to assess the functionality of diverse types of habitats around Salt Lake Djendli, North- east Algeria. The landscape is stratified into five habitat types in a gradient from wetland to forested mountains. Bird species found in these habitats can be classified into four ecological groups with decreasing degrees of aquatic specialisation and increasing forest specialisation. For each surveyed species, five ecological status were assigned. Overall, there was lower species richness in urban areas compared to other “natural” habitats. Birds have a biogeographical affinity to the western Palaearctic according to the dominant faunal types. Interactions of ecological status with phenological traits reveal that water birds are different from non-aquatic species because most of them are migrants. Moreover, overall, there is no worrying conservation status for surveyed birds. Bird diet is dependent on the ecological status that differentiate bird groups from each other due to differences in the food resources of the habitats they frequent. Phenological categories tend to link together birds of urban and open-lands. These two groups are affected by seasonal human activities. Our findings emphasise the importance of using combinations within the birds’ ecological status, which would give information on the actual state of avifauna. This approach is relevant for future programmes and conservation actions.
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    Tarifs et tables de cubage d’arbres individuels du pin d’Alep, Pinus halepensis Mill., dans l’Aurès algérien
    (researchgate, 2019-01-15) Goubi Mostefa
    The aim of this study was to develop volume tables for individual Aleppo pine trees, Pinus halepensis Mill., in the Ouled-Yaâgoub pine forest in Algeria. Nine linear and non-linear functions were systematically adjusted to the data collected from 340 trees representing the different diameter and height classes and chosen from trees felled during final logging operations in the study site. The approach used to estimate the parameters of the different functions tested is based on linear and non-linear regression applying the ordinary and weighted least-squares technique. Numerical and graphical analyses mainly based on the distribution of residues and the precision of the volume tables obtained were used to compare the different functions tested. Two functions were selected to generate volume tables for individual trees in Algeria’s Ouled-Yaâgoub pine forest. The first is a single-entry table expressing volume as a function of tree diameter at a height of 1.30 m; the second is a double-entry table expressing volume as a function of tree diameter at a height of 1.30 m and total tree height. The adjusted determination coefficients and residual least squares obtained with these two functions or tables are respectively 0.944 and 109.78 dm3 for the first and 0.977 and 69.69 dm3 for the second. Finally, to manage the Ouled-Yaâgoub forest efficiently, the estimation of standing Aleppo pine timber must also consider the aim of management operations. The single-entry volume table, which is easier to produce, can be used for forestry operations such as thinning, while the double-entry table, which is more accurate, can be used for the final logging cut to produce marketable timber, for which the volume estimations have to be more accurate.
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    Ajwain (Trachyspermum ammi L.) Oils
    (elsevier, 2016) Sofiane Habibatni
    This book provides an authoritative synopsis of many of the complex features of the essential oils as applied to food science, ranging from production and harvesting, to the anti-spoilage properties of individual components. It embraces a holistic approach to the topic, and is divided into two distinct parts, the general aspects and named essential oils. With more than 100 chapters in parts two and three, users will find valuable sections on botanical aspects, usage and applications, and a section on applications in food science that emphasizes the fact that essential oils are frequently used to impart flavor and aroma. However, more recently, their use as anti-spoilage agents has been extensively researched. Explains how essential oils can be used to improve safety, flavor, and function Embraces a holistic approach to the topic, and is divided into two distinct parts, the general aspects and named essential oils Provides exceptional range of information, from general use insights to specific use and application information, along with geographically specific information Examines traditional and evidence-based uses Includes methods and examples of investigation and application
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    Probiotic potential of lactobacillus strains isolated from fresh bee pollen
    (Scholars Research Library, 2016) Oumaima NAILI
    ABSTRACT The present work aimed to evaluate the probiotic potential of lactobacillus strains isolated from fresh bee pollen. Thirty three lactobacillus isolates were screened for antagonistic activity against six pathogenic bacteria. Ten of them were selected identified as lactobacillus plantarum and evaluated for resistance to acidic pH (2 and 3) and 0.3% bile salts, hydrophobicity and autoaggregation ability. Moreover, their safety was verified by testing haemolytic activity on human blood agar and antibiotic resistance. The results showed that all lactobacillus strains were effective against all indicator bacteria; all strains were able to maintain their viability after 3h exposure to pH 3 and 4h in the presence 0.3% of bile salts. While only five could survive with losses in cell viability after 3h exposure to pH 2. Most strains showed a high hydrophobicity and autoaggregation ability. All lactobacillus strains were resistant to ciprofloxacin, tobramycin, nalidixic acid and colistin. 50% of the strains were susceptible to chloramphenicol, Nitroxolin, penicillin G, Cefoxitin, pristinomycin, cefexim and 80% are susceptible tostreptomycin. No haemolysis was observed on blood agar. Five strains of Lactobacillus plantarum were selected as suitable candidates for industrial use.
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    Phosphate removing using bacteria isolated from activated sludge for wastewater remediation
    (Journal of Biodiversity and Environmental Sciences, 2015) Oumaima NAILI
    Abstract The objective of the current study is to isolate phosphate removing microbes from activated sludge for wastewater remediation in the area of Khenchela (Eastern Algeria) . Phosphate rate was determined using colorimetric method and batch tests were developed to evaluate the biomass composition of the sludge. Four efficient pure strains isolated from activated sludge samples and identified as Acinetobacter junii, Pseudomonas aeruginosa, Moraxella lacunata, Alcaligenes denitrificans were tested for their capacities of phosphate reduction. The best rate of phosphate removal by pure cultures is observed with Acinetobacterjunii, 76%, followed by Alcaligenes denitrificans, 70.42%, Pseudomonas aeruginosa, 61.78%, and Moraxella lacunata, 50.6%. Our results show that applying of mixed bacterial culture containing mostly isolated strains for bioremediation purpose can be used successfully for the elimination of phosphate from activated sludge of wastewater treatment plants.
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    Soil respiration as an indicator of soil quality under agrochemical treatment in a semi‑arid area of southern Mediterranean
    (Springer, 2023-09-29) Nawal Ababsa; asmina Della
    Abstract Pesticides are chemicals whose use is primarily intended to protect crops against pests. Unfortunately, the excessive use of these phytosanitary products generates environmental risks. To fully comprehend the biohazard posed by these agrochemi- cals, it is crucial to reveal the biological reaction of soil to pesticides. The objective of this work was to study the impact of pesticides on soil respiration through microbial communities. The experimentation was carried out for 28 days under con- trolled conditions on two types of soils. The first was subjected to phytosanitary treatments (Mospilan), and the second does not receive phytosanitary treatments. Soil respiration was monitored for two sampling periods where the soil was sampled in autumn 2021 and spring 2022. C-CO, released from the soil that never received a plant protection treatment is greater in fall and spring than C-CO2 released from the soil subjected to plant protection treatments. The results present the soils not treated with the pesticide as being those with the highest respiration values (a peak of 272.8 mg of CO2 kg of soil1 I h1 is recorded on the 14th day in autumn and a peak of 941.6 8 mg of CO2 kg of soil-1 1 h1 recorded on the 7th day for the soil sampled in the spring) and the soils treated with the pesticide as those with the lowest values (a maximum of 214.13 mg of CO, kg of soil 1 h1 is always recorded on day 14 in autumn and 272.8 mg of CO2 kg of soil-1 1 h1 is always recorded on day 7 in spring). Quantifying the fluxes of released C-CO, allowed us to determine the negative impact of pesticides on the inhibition of microbial respiration. It is recommended to spread this study over several types of soil, considering several types of pesticides.
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    Branchinectella media (Schmankewitsch, 1873) and Phallocryptus spinosus (Milne-Edwards, 1840) (Crustacea) in saline lakes from the Aures region (North-east Algeria)
    (researchgate, 2018-09) Rais Lynda
    ABSTRACT. – The co-occurrence of two anostracan species Branchinectella media and Phallocryptus spinosus have been surveyed monthly in four saline lakes from the Aures region (Chott Tinsilt, Garaa El-Tarf, Sebkha Djendli and Garaa O’Lembarek), in North-East Algeria, between 2013 and 2014. Branchinectella media occurred during the winter at low water temperatures ranging between 5 and 16 °C and a salinity between 2.24 and 44 ppt (g/L), while P. spinosus preferred spring with a temperature range between 18 and 22 °C and a salinity from 12.08 to 48.6 ppt. The presence of both species overlapped only in March in the four sites. Phallocryptus spinosus always occurred with higher monthly densities between 5.2 ± 0.99 and 27.7 ± 3.81 ind.L–1 versus 1.65 ± 0.64 to 10.55 ± 0.78 ind.L–1 for B. media. Phallocryptus spinosus was two times larger than B. media (F = 26.80, P < 0.001) and its females were two times more fertile (t = 12.89, P < 0.0001) in the four sites. From the present study, we concluded that B. media, which is considered as a rare species according to the literature, was sensitive to environmental factors, mainly the temperature, and was dominated by P. spinosus, making it vulnerable, especially to the effects of the predicted climate warming
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    Comparing chemical composition and phenolic compounds of some herbals as potential feed additives in ruminant Nutrition
    (Springer, 2019) Souhil Boufennara
    Abstract. The chemical composition and phenolic compounds of eight herbals (Alpinia of ficinarum, Artemisia absinthium, Cuminum cyminum, Dittrichia viscosa, Mentha rotundifolia L.,Nigella sativa, Rosmarinus officinalis L and Zingiber officinale) were evaluated. Feed com ponents were determined by proximate analysis, whereas phenolic and tannin compounds were analysed by colorimetric procedures. The crude protein content of the herbal samples varied widely, being particularly high for Nigella sativa and low for Alpinia officinarum and Rosma rinus officinalis. The highest contents of Total extractable phenols (TEP) and Total extractable tannins (TET) were observed in the Cuminum cyminum and Dittrichia viscose whereas herbals, Nigella sativa and Zingiber officinale showed lower concentrations. The tannin concentration varied considerably between species, but in general the plants investigated in this study had low tannin contents (except for Alpinia officinarum). Based on the results above, it could be con- cluded that a large reserve of herbal species in the local flora is available that could be poten tially used as additives for livestock feeding. These herbs appear to be promising alternatives to antibiotics in altering rumen fermentation and reducing methane production in ruminants.
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    Protective effect of ginger against toxicity induced by chromate in rats
    (jle,com, 2013) Meriem Krim
    Abstract : The evaluation of the effect of ginger on the modulation of toxic effects induced by chromate is the objective of our study. 50 male rats Albinos wistar were divided to five groups as follow: group I (T) is served as control, received a mineral water by gavage (per os); group II (G) received an experimental diet with 2% of ginger; group III (Cr) received an oral dose of potassium dichromate (15 mg/kg) and normal diet; group IV (CrG): received an oral dose of potassium dichromate (15 mg/kg) and an experimental diet containing 2% ginger; and group V (Cr+G) received an oral dose of potassium dichromate (25 mg/kg) and an experimental diet with 2% of ginger. The results of this study indicate that the chromate provoked a haematoxic effect (anemia), nephrotoxic, hepatotoxic, and also a perturbation in lipids profile. In addition, chromate has a pro-oxidant effect, which was indicated by decrease of reduced glutathione (GSH) levels in different tissues. However, the administration of ginger revealed a reduction of the intensity of oxidative stress induced by the chromate resulting in the decrease of the majority of the previous parameters concentrations. In conclusion we demonstrated that ginger has potent antioxidants activity, revealed by the amelioration of chromate’s toxic effects.We can say that ginger has a protective effect towards damages induced by the chromate.
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    The Investigation of the Oxidative Stress-Related Parameters in Type 2 Diabetes Mellitus
    (elsevier, 2024-03-06) Meriem Krim
    Objective: Oxidative stress, defined as an imbalance between reactive oxygen species production and breakdown by endogenous antioxidants, is closely associated with diabetes mellitus. The diabetes is characterized by hyperglycemia together with biochemical alterations of glucose and lipid peroxidation. Oxidative stress has been implicated in the pathogenesis of type 2 diabetes and its complications. Methods: This study was conducted to investigate the variation in oxidative stress-related parameters in type 2 diabetes. Blood serum samples were collected from diabetes patients and nondiabetes healthy controls. Glucose concentrations, levels of glycated hemoglobin (A1C) and serum oxidative stress markers (glucose-6-phosphate dehydrogenase [G6PDH], malondialdehyde [MDA], glutathione [GSH], glutathione reductase [GR], glutathione peroxidase [GPx] and superoxide dismutase [SOD]) were estimated. Results: Fasting serum glucose concentration in type 2 diabetes patients of both sexes was increased significantly as compared with the healthy controls. Level of A1C was greater than standards. Significant elevation in MDA level and depletion in GSH content were observed in diabetes patients in comparison with controls. The diminution in G6PDH activity was accompanied in part by a decrease in the antioxidative enzymes activities (GPx and GR), and in part by an increase in SOD activity in all diabetes patients as compared with the control group. The regression analysis showed no correlation between diabetes duration and severity of oxidative stress; however, there was a significant association between A1C and severity of oxidative stress. Conclusions: The present study shows that there is an oxidative stress state in type 2 diabetes patients compared with healthy subjects. Our data suggest that chronic hyperglycemia causes a significant change
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    Nest-site characteristics of Levaillant’s Woodpecker Picus vaillantii endemic to North Africa
    (NISC (Pty) Ltd and Informa UK Limited (trading as Taylor & Francis Group), 2022) Mehdi Badis
    Levaillant’s Woodpecker is an endemic species of the forests of north-western Africa. Through the cavities it digs, its presence is essential for the existence of other cavity nesters. However, despite its importance to its ecosystems, there are not much data dealing with its ecology and especially its habitats. To describe these habitats, we investigated nest-sites characteristics of Levaillant’s Woodpecker Picus vaillantii in the Aures forest massifs of north-eastern Algeria, during two breeding seasons 2018 and 2019. Using the point count method, we detected 45 occupied nesting cavities, unevenly distributed over the formations, dominated by Atlas cedar (73.3%), Holm oak (13.3%), and Aleppo pine (4.4%). Results showed high utilisation of live trees (71.1%) with healthy crowns (75.5%). Findings also revealed that the species favoured tree trunks (77.7%) as nesting support and that the determination of the nest height was strongly dependent on the height of the nesting tree. Nest height and tree diameter at this height varied significantly among tree species. Nests were higher in Aleppo pine, however, tree diameters at nest positions were lower in this species, compared with other tree species. These results on the ecology of Levaillant’s Woodpecker can serve to fill the information gap in the ornithological knowledge of the Aures forests areas and provide important information for the conservation of the species in the context of forest management
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    Effects of the methane-inhibitors Nitrophenol, 5-Nitrobenzimidazol and two new synthetic nitrocompounds on in vitro ruminal fermentation
    (journal homepage, 2018) Laiche Aouidane
    The objective of this study was to examine the effects of four nitrocompounds (Nitrophenol, 5-Nitrobenzimidazol and two synthetic nitrocompounds ABLE 244 and ABLE 245) on methane production and fermentation characteristics using in vitro rumen batch culture. 0, 2, 8 or 12 µM of each nitrocompound were incubated. The higher concentrations of Nitrophenol and 5-Nitrobenzimidazol produced 60% less CH (P < 0.05) compared to controls, while two synthetic nitrocompounds ABLE 244 and ABLE 245 had no effect on CH 4 production. Quantification of fermentation end-products indicated that fermentation efficiencies were not compromised by the nitro-treatments. 4
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    N-Acetyltransferase 2, glutathione S-transferase gene polymorphisms and susceptibility to hepatocellular carcinoma in an Algerian population
    (trading as Taylor & Francis Group, 2022-02-16) BENDJEMANA KATIA
    ABSTRACT 1. This study was conducted to investigate the potential association of genetic polymorphisms of glutathione S-transferase M1/T1 (GSTM1, GSTT1), and N-acetyltransferase 2 (NAT2) genes and epidemiological parameters with the risk of HCC in the Algerian population. 2. A case-control study including 132 confirmed HCC patients and 141 cancer-free controls was performed. Genotyping analysis was performed using conventional multiplex PCR and PCR-RFLP. Statistical analysis was performed using the Chi-square test. Logistic regression analysis was used to estimate odds ratios and 95% confidence intervals (95% CI). 3. GSTM1 null and NAT2 slow acetylator genotypes confer an increased risk to HCC (OR ¼ 1.88, 95% CI 1.16–3.05; OR ¼ 2.30, 95% CI 1.26–4.18, respectively). This association was prevalent in smokers (OR ¼ 2.00, 95% CI 1.05–3.8 and OR ¼ 2.55, 95% CI 1.22–5.34, respectively). No significant association was observed for GSTT1 null genotype in the contribution to HCC risk (OR ¼ 0.76, 95% CI 0.46–1.27). 4. In conclusion, the GSTM1 and NAT2 gene polymorphisms are positively associated with the risk of HCC in older men and especially in smokers.
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    (International Journal of Pharmacy and Pharmaceutical Sciences, 2018-03-08) BENDJEMANA KATIA
    ABSTRACT Objective: The present study was carried out to analyze the relationship between CYP2E1 genetic polymorphism and the risk of developing nasopharyngeal cancer (NPC). Methods: The study involved 100 patients with nasopharyngeal carcinoma, compared with 180 healthy controls. Genomic DNA samples were assayed for restriction fragment length polymorphisms in the CYP2E1 by PCR amplification followed by digestion with RsaI. The frequency comparison between the two groups was determined by the χ(2) test. Results: Our results showed that the distribution of CYP2E1-/-allele frequency was found to be significantly different between controls (22 %) and cancer cases (26%) along with twice increase of the NPC risk in Algeria (OR=2.2, CI 95% [1.02-2.54]). Conclusion: Our results are in line with those found for other populations and subsequent they emphasize the importance of the involvement of this gene in the development of the NPC detoxification process, which exhibited more and more strong association with environmental factors.
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    Toxicity of Subchronic Doses of Propiconazole, Propineb and Their Mixture on Reproductive Parameters in Male Rats
    (Advances in Environmental Biology, 2015-01-28) Aiche Mohamed Amine
    The present study has been carried out to elucidate the toxic effects of two commonly used pesticides, propiconazole, propineb and their mixture on reproductive parameters in male wistar rats. Twenty eight male rats were randomly divided into four groups. Rats in groups 2, 3, and 4 received propiconazole 60 mg/Kg, Propineb 100 mg/Kg and their mixture 30 mg/kg Propiconazole + 50 mg/kg Propineb, respectively, while those of group one served as control , and that throughout the 4 weeks experimental period. Animals were observed for clinical toxicity. At the end of treatment, all groups of animals were scarified and samples of different organs were fixed in the formol 10% for histopathological study. The semen study showed a decrease in the count and mobility of spermatozoa, accompanied with a significant decrease in morphological changes of flagellum in the treated groups especially with mixture compared to control group. It was also a decrease in the weight of the testis and epididymis in the treated groups compared to the control. Histological changes were observed in the testis and epididymis in all treated groups. In conclusion this paper shows clearly that the treatment with these pesticides alone or in combination for 4 weeks can induce a decrease in the quality of the sperm with histopathological changes in the testes and epididymis.