scholarly journals Physico-chemical characteristics of the mosquito breeding water in two urban areas of Cairo Governorate, Egypt

2013 ◽  
Vol 45 (3) ◽  
pp. 17 ◽  
Author(s):  
M.A. Kenawy ◽  
S.E. Ammar ◽  
H.A. Abdel-Rahman
Keyword(s):  
Urban Areas ◽  
Culex Pipiens ◽  
Mosquito Species ◽  
Chemical Characteristics ◽  
Mean Values ◽  
Physico Chemical ◽  
Mosquito Breeding ◽  
Culiseta Longiareolata ◽  
Different Characteristics ◽  
Larval Species

Certain physico-chemical characteristics of mosquito breeding habitats [temperature, pH, salinity, turbidity, dissolved oxygen (DO) and nitrite] were examined relative to the distribution of mosquito larval species in two urban areas of Cairo Governorate namely El- Muqattam (M) and Abu-Seir (A). Mean values and ranges of such characteristics for the reported mosquito species (<em>Culex pipiens</em>, <em>Cx. perexiguus</em>, <em>Ochlerotatus caspius</em>, <em>Cx. pusillus</em> and <em>Culiseta longiareolata</em>) were reported. In conclusion, based on the significant correlations of the different characteristics with the abundance of the two common larval species (<em>Culex pipiens</em> and <em>Cx. perexiguus</em>), salinity and DO may be considered the predictor variables associated with the immature abundance. Considering altogether mosquitoes, there is an increasing presence from planned safe (M) to unplanned unsafe (A) habitats mainly due to turbidity and nitrite.

scholarly journals Human biting Culex pipiens bioform molestus is spread in several areas in south Sweden

2019 ◽  
Author(s):  
Luande Verah Nafula ◽  
Disa Eklöf ◽  
Anders Lindström ◽  
Steven Ger Nyanjom ◽  
Magnus Evander ◽  
...  
Keyword(s):  
Rural Areas ◽  
Urban Areas ◽  
Culex Pipiens ◽  
Mosquito Species ◽  
Urban Environments ◽  
Coi Gene ◽  
Morphological Identification ◽  
Potential Vector ◽  
South Sweden ◽  
Citizen Science Project

AbstractThe mosquito species Culex pipiens is a potential vector of several pathogens infecting humans and occurs in two distinct bioforms, pipiens and molestus. Traditional morphological identification fails to separate the bioforms of Cx. pipiens despite their behavioural differences since they are morphologically indistinguishable. However, molecular methods can identify the two bioforms. The bioform molestus thrives in urban environments and bite all kinds of vertebrates, whereas bioform pipiens is more rural and mainly feed on birds.Mosquito samples submitted in a citizen science project from people experiencing mosquito problems in South Sweden were analyzed to determine the geographical distribution of the molestus bioform of Cx. pipiens. Mosquito specimens were identified to species by DNA barcoding of the cytochrome C oxidase subunit I (COI) gene and the bioforms were determined with the CQ11 microsatellite marker. To establish other differences between the bioforms, part of the CPIJ001674 gene was sequenced. Culex pipiens f molestus, was present both within and outside of urban areas in several sites in southern Sweden. In one site, hybrids between the two bioforms were found. Culex pipiens f molestus has previously been found in urban areas in Sweden, but the detection of the bioform in several rural areas was surprising, indicating that it may be more widely spread than previously thought.

The biting flies of the Kano Plains, Kenya: Part II. Larval habitats of common mosquito species (Dipt., Culicidae)

1971 ◽  
Vol 61 (2) ◽  
pp. 299-307 ◽  
Author(s):  
Canute P. M. Khamala
Keyword(s):  
Culex Pipiens ◽  
Mosquito Species ◽  
Breeding Site ◽  
Breeding Sites ◽  
Larval Habitats ◽  
Emergent Plants ◽  
Culex Pipiens Fatigans ◽  
Breeding Habitats ◽  
Mosquito Breeding ◽  
Selection Of

Six natural terrestrial mosquito breeding habitats were recognised in the Kano Plains of Kenya by their condition, i.e. temporary or permanent, presence or absence of emergent plants, and by the chemical and physical characteristics of their water. Between September 1968 and March 1970, 13 mosquito species were found breeding in these habitats. Most species were restricted to a few habitats; only four showed a wide occurrence, being found in at least four. Anopheles gambiae Giles and Culex annulioris Theo. exploited all six habitats, suggesting that the characteristics studied were probably not critical to their selection of a breeding site. Mansonia and Coquillettidia spp. were restricted to habitats with some plants, indicating their dependence on such vegetation for respiration and protection. The indiscriminate selection of breeding sites by disease vectors, e.g. A. gambiae, A. pharoensis Theo. and Culex pipiens fatigans Wied., is worth noting in irrigation schemes.

scholarly journals Trend of mosquito (Diptera: Culicidae) monthly distribution in Sanandaj County of Iran

2021 ◽  
Vol 22 (11) ◽  
Author(s):  
Bahadin Salavati ◽  
AMIR HOSSEIN ZAHIRNIA ◽  
Hassan Nasirian ◽  
SHAHYAD AZARI-HAMIDIAN
Keyword(s):  
Urban Areas ◽  
Mosquito Control ◽  
Mosquito Species ◽  
Control Measures ◽  
Adult Mosquito ◽  
Rural And Urban Areas ◽  
Rural And Urban ◽  
Significant Difference ◽  
Monthly Distribution ◽  
Mosquito Breeding

Abstract. Salavati B, Zahirnia AH, Nasirian H, Hamidian SA. 2021. Trend of mosquito (Diptera: Culicidae) monthly distribution in Sanandaj County of Iran. Biodiversitas 22: 4705-4715. Mosquitoes are the most significant arthropods of medical importance due to their burden of transmitting pathogens and parasites. The present study was designed to investigate the distribution of mosquitos (Diptera: Culicidae) in Sanandaj County in 2018. Sanandaj County was divided into four areas in rural and urban areas, including north, south, east, and west. Four rural and urban areas were randomly selected from four geographical directions. A sampling of larval and adult mosquitoes was performed using standard methods. The dipping technique was used to collect the mosquito larvae. A sampling of adult mosquitoes was performed during feeding on humans and animal baits and resting in the natural indoors, outdoors, and artificial areas. Light traps were also used to collect adult mosquitoes. The larval and adult specimens were identified using the morphology-based key. In total, nine mosquito species, including Anopheles maculipennis s.l., Anopheles superpictus s.l., Culiseta longiareolata, Culiseta subochrea, Culex hortensis, Culex mimeticus, Culex modestus, Culex pipiens, and Culex theileri were inhabited in Sanandaj County. The larval and adult mosquito species trend remains constant for at least 6 months of a year, from May to October. One-way ANOVA didn't reveal a significant difference between mosquito breeding places' habitats and water types, mosquito localities and life stages, monthly mosquito distribution, and adult mosquito resting places. The frequency trends of larval and adult mosquito species remain constant at least for 6 months of a year. It needs to be ready for timely mosquito control measures.

scholarly journals Study on the physico-chemical characteristics of longan (Euphoria longana) germplasm

2012 ◽  
Vol 37 (3) ◽  
pp. 441-447
Author(s):  
MM Khatun ◽  
MR Karim ◽  
MM Molla ◽  
MM Khatun ◽  
MJ Rahman
Keyword(s):  
Agricultural Research ◽  
Soluble Solids ◽  
Research Centre ◽  
Chemical Characteristics ◽  
Central Laboratory ◽  
Agricultural Research Institute ◽  
Physico Chemical ◽  
Wide Range ◽  
Different Characteristics ◽  
Physical And Chemical

A study on the physico-chemical characteristics of 15 promising longan germplasm was carried out at the fruit Research Farm of Horticulture Research Centre (HRC) as well as laboratory of Post harvest Technology Section of HRC and the Central Laboratory of Bangladesh Agricultural Research Institute, Joydebpur, Gazipur. The experiment was conducted during the fruiting season of 2010. Fifteen promising lines of longan germplasm including BARI Anshphal-1, BARI Anshphal-2, EL-Joy 003 to EL-Joy 015 of 12 years old were included in this experiment. A wide range of variations were observed among the germplasm in respect of different characteristics under the present study. Per cent edible portion was the highest in EL-Joy 010 (76.57 %), EL-Joy 006 (74.55%), EL-Joy 003 (74.20 %) and the lowest in EL-Joy 012 (65.10 %). Total reducing and non-reducing sugar was the maximum in EL-Joy 009 (6.94 %) and BARI Anshphal-2 (16.50 %), respectively. BARI Anshphal-1 contained the highest amount of ascorbic acid (13.00 mg/100 g) and EL-Joy 009 possessed the maximum total soluble solids (22.30 %). The study revealed that BARI Anshphal-1, BARI Anshphal-2, EL-Joy 003, EL-Joy 006, EL-Joy 009, EL-Joy 010 were the best in respect of physical and chemical characteristics of fruits. Bangladesh J. Agril. Res. 37(3): 441-447, September 2012 DOI: http://dx.doi.org/10.3329/bjar.v37i3.12087

scholarly journals Sewage Sludge to Fertilise Durum Wheat: Effects on Crop and Soil

2021 ◽  
Author(s):  
Pilar Mañas ◽  
Jorge de las Heras
Keyword(s):  
Sewage Sludge ◽  
Winter Wheat ◽  
Urban Areas ◽  
Triticum Turgidum ◽  
Morphological Characteristics ◽  
Physico Chemical ◽  
Different Characteristics ◽  
Weight Number ◽  
Composted Sewage Sludge ◽  
Sludge Application

The vast quantities of degradable waste generated in urban areas may negatively influence the environment if improperly managed. This study examines effects on soil properties, yield and morphological performance of winter wheat (Triticum turgidum L. cv. Vitron) after applying composted and air-dried sewage sludge. The experiment was conducted on the field scale in two different farm soil plots Toledo, (central Spain) with different characteristics, especially salinity, concentration of chlorides, sulphates and pH. Three fertiliser treatments were considered: commercial fertiliser; air-dried sewage sludge and composted sewage sludge. Sewage sludge promoted better yields than the commercial fertiliser, and preserved soil physico-chemical characteristics. The sewage sludge application (air-dried and composted) to soil improved the results of the morphological characteristics of the studied wheat in relation to the commercial fertiliser. In the saline soil plot, air-dried sewage sludge improved the morphological characteristics of spikes (length, weight, number of grains per spike), but not final grain weight and, consequently, yield. These were upgraded with the composted sewage sludge. Use of sewage sludge for winter wheat production was the better studied option and proved a sustainable approach to recycle such waste on land.

scholarly journals Poultry Faeces Management by Bioconversion Technology with Modified GGC 2047 Model

2016 ◽  
Vol 1 ◽  
pp. 107
Author(s):  
S. K. Neupane ◽  
Ram K. Sharma ◽  
Shiva Shankar Karki
Keyword(s):  
Rural Areas ◽  
Urban Areas ◽  
Biogas Production ◽  
Chemical Characteristics ◽  
Poultry Farm ◽  
Poultry Waste ◽  
Environmental Aspects ◽  
Physico Chemical ◽  
Biogas Energy ◽  
College Of Engineering

<p>In this report, entitled “Poultry Faeces Management by Bioconversion Technology with Modified GGC 2047 model” focuses on various parameters relating to physico-chemical characteristics of the substrate, fertilizing value of digested poultry waste and potential to create profitability from biogas energy, thus generated and balancing the environmental aspects using poultry waste digestion. Also, biogas may be the tool of energy generation in rural areas while sanitation (waste management) in urban areas of developing countries asNepal. Biogas production from chicken faeces could be obtained more effectively by feeding around 8.5 kg per day. It is concluded that digester could be run by around 2.5 quintal chicken faeces per month. Hence those people, who can manage this quantity of waste, can utilize bio-digester without poultry farm.</p><p><em>Journal of Advanced College of Engineering and Management, Vol. 1, 2015</em>, pp. 107-117</p>

scholarly journals ASSESSMENT OF PHYSICO-CHEMICAL CHARACTERISTICS AND HEAVY METAL CONCENTRATIONS OF STUBBS CREEK, IBENO, AKWA IBOM, NIGERIA

2021 ◽  
pp. 15-26
Author(s):  
Henry Robert Anwan ◽  
Martins Agenuma Anetekhai ◽  
Gabriel Olarinde Mekuleyi
Keyword(s):  
Heavy Metals ◽  
Seasonal Variation ◽  
Water Samples ◽  
Oxygen Demand ◽  
Total Hardness ◽  
Chemical Characteristics ◽  
Mean Values ◽  
Spatial And Seasonal Variation ◽  
Physico Chemical ◽  
Total Dissolved Solid

The present study examined some physico-chemical characteristics (temperature, pH, total hardness, dissolved oxygen (DO), total dissolved solid(TDS), conductivity, transparency, biochemical oxygen demand (BOD), acidity and alkalinity) and some heavy metals (Fe, Zn, Cu, Cd, Cr and Ni) concentration of Stubbs Creek, Ibeno, Akwa Ibom, Nigeria between August 2014 and July, 2015. Six sampling stations (Mkpanak, Okpot Ikot, Ebana Mbri, Esit Eket, Okpuk and Ikot Ebia Anam) in Stubbs Creek were selected. Water samples were analyzed using APHA-AWWA-WPCF methods while heavy metals in the water samples were digested and determined using UNICAM 939 Atomic Absorption Spectrophotometer (AAS). The mean values of water parameters of Stubbs Creek are: temperature (27.22 ± 0.230C); pH (6.83 ± 0.13), DO (3.86 ± 0.20 mg/L), BOD (2.84 ± 0.11 mg/L), conductivity (522.23 ±69.12 µScm-1), TDS (288.83 ± 39.50 mg/L), transparency (0.86 ± 0.05m), alkalinity (95.51± 6.44mg/L), acidity (97.03±7.45) and total hardness(12.11±1.55).Only TDS, conductivity, alkalinity and total hardness showed significant (p<0.05) spatial variation across the sampling stations. However, the values of temperature, TDS, conductivity, alkalinity and total hardness indicated significant seasonal variation. Similarly, there were no significant (p<0.05) spatial and seasonal variation in the values of heavy metals recorded across the sampling stations. All the physico-chemical parameters and heavy metals in this study are below the maximum permissible limit recommended by WHO. The result showed that Stubbs Creek is less polluted at present and safe for the biota. However, responsible use of the water bodies by all and sundry should be maintained in order to preclude problems common with effluents discharge.

scholarly journals Quality Characteristics of Banana based Milk Smoothies Developed from Milk of Hariana, Sahiwal and Cross Breed Cows

2020 ◽  
Vol 39 (01) ◽  
Author(s):  
Brijesh Kumar ◽  
V. P. Singh ◽  
V. Pathak
Keyword(s):  
Sodium Alginate ◽  
Quality Characteristics ◽  
Sensory Characteristics ◽  
Sensory Profile ◽  
Chemical Characteristics ◽  
Mean Values ◽  
Overall Acceptability ◽  
Physico Chemical

A study was undertaken to assess the quality characteristics and suitability of milk of Hariana (H), Cross breed (CB) and Sahiwal (S) cows for development of milk smoothies. The 125 g milk of each breed, 75 g of banana, three variants of sugar and 0.1 percent sodium alginate were used in formulation. Prepared smoothies were analyzed for different phyico-chemical and sensory characteristics. In general, non-significant (P0.05) differences were observed in physico-chemical characteristics among different smoothies. But mean values of water, protein and solid-not-fat showed significantly (P 0.05) different values. Water was significantly (P 0.05) lower while solid-not-fat was significantly (P 0.05) higher in Cross breed milk smoothies as compared to the smoothies of other breeds of cows. The sensory profile of all the smoothies were no significant (P 0.05) differences with each other. Finally Sahiwal milk smoothies were selected based on higher scores of sweetness, acidity, consistency and overall acceptability scores than others.

Sign in / Sign up

Export Citation Format

Share Document