scholarly journals Mosquito Species Abundance, Distribution and Diversity in Ughelli North Local Government Area, Delta State, Nigeria

2020 ◽  
Vol 3 (1) ◽  
pp. 42-51
Author(s):  
E Onodua ◽  
PE Odo ◽  
AO Egwunyenga

This research was carried out to record mosquito species abundance, distribution, diversity and breeding sites in four villages of Ughelli North Local Government Area of Delta State. Potential habitats of mosquitoes were sampled using dippers, hand-lens and plastic containers between June and November 2014. A total number of 274 sites were examined and only 146 were positive for mosquito larvae. The habitats sampled include domestic containers 107(39.05%), puddles 59(21.53%), tyres 47(17.15%) and drains 61(22.26%). The variation in the number of larvae collected from the various habitats were not significant (P=0.1203, F=2.705 and df= 3). One thousand six hundred and fifty-three (1.653) mosquito larvae were collected and reared to adults. Seven hundred and twelve (712) of the larvae emerged as adults that were separated into three genera: Anopheles, Aedes and culex and identified up to species level. Culex quinquefasciatus was found to be the most abundant (29.35%) in the study area, followed by Aedes aegypti (25.70%). C. nebulosus was the least abundant species with 2.95 %. Domestic containers were the most preferred breeding habitats for all the mosquito species and the variation in the species of mosquito with respect to types of habitat showed significant association in Ofuoma (P=0.0167, F=4.322,df=3) and Adjekota (P=0.0252, F=3.852, df=3). There was significant difference in the occurrence of mosquito species in the month of September (p value 0.0085) compared to June (p value 0.0518), July (p value 0.2370), August (p value 0.1920), October (p value 0.0534) and November (p value 0.0241. Variations existed in the physico-chemical parameters in the different sources of collections in different locations. Temperature ranged from 20.0 to 24.60C while pH (hydrogen ion concentration) range was 6.9 – 7.7 and Dissolved oxygen (D.O) ranged between 1.4 and 2.7(mg/L) as Conductivity ranged between 67.9 and 82.1(μs) and turbidity varied from 62.0NTU in the container samples to 84.2NTU in the gutter samples and depth varied between 6.3 and 68.3(cm) across the different locations but depth ranged from 6.3cm to 68.3cm and temperature was (22.8±2.6), Analysis of variance (ANOVA) and mean was used to determine the significant differences (p<0.05) in habitats and species distribution while Shannon Wiener and Simpson indices were used to determine species diversity and abundance. There is need for concerted efforts in mosquito control in Ughelli North to mitigate the incidence of mosquito transmitted diseases.

2020 ◽  
Vol 3 (3a) ◽  
pp. 38-45
Author(s):  
JK Makpo ◽  
SM Ameh ◽  
A Asarya ◽  
YP Gambo

This work assessed the presence of heavy metals in water contaminated with petroleum products in Keffi Local Government Area. Two water sampling station were selected based on the stratified method of sampling of Antau River. Station A is located along Federal Government College Keffi popularly known as Antau Bridge where Agricultural and mechanical activities, with sales of petroleum product take place. Station B was located at Dadin Kowa known as Gada Manu where human activities such as bathing and washing takes place which served as control. The distance between stations is 1km. The procedural plan of this study was monthly sampling of water from both Stations. Materials such as funnel, sampling container, distilled water, conical flask, filter paper, 50ml polypropylene centrifuge tube, cooler were used. Heavy metal concentration was determined using X – ray Fluorescent Spectroscopy (XRF) at the Center for Energy Research and Training (CERT), Ahmadu Bello University Zaria. The water parameters of the four samples were determined using the Extech instrument. The result on Physico – chemical parameters revealed the values obtained from contaminated water samples to be pH (7.31), Dissolved Oxygen (1.14), Electrical Conductivity (8.22), Total Dissolved Solid (4.13), Temperature (27.45) and Salinity (0.091) while the controlled Station at point B were pH (7.43), DO (7.35), EC (3.14), TDS (1.54), Temperature (26.75), Salinity (0.o94) respectively. From the result obtained, the heavy metal contaminated samples had the following values: Mg (29.31±), Al (218.69±), Si (230.12±), S (1153.65±), Cl (54.25±), Ca (106.56±), Ti (23.66±), Cr (3.15±), Fe (15.92±), Cd (7.54±). For the control sample at point B, the following values were obtained: Mg (27.49±), Al (223.71±), Si (243.21±), S (94.84±), Cl (23.52±), Ca (28.44±), Ti (32.99±), Fe (16.63±), Cd (7.67±) respectively. The P-value was 0.8105 (p>0.05) for the water quality parameters while for the concentration of heavy metal P-value was 0.2054 (p>0.05). This implies that there was no significant difference between the concentrations of elements. However, the concentration values of heavy metals in the contaminated water at Station A and control water samples at Station B were higher than the World Health Organization values (Standard) for drinking water


2018 ◽  
Author(s):  
LeBari Barine Gboeloh ◽  
Ike-Ihunwo Chikaire Ndamzi

ABSTRACTSoil transmitted helminthes (STHs) are common public health concern among children in Sub saharan Africa. A study to determine the prevalence and intensity of these parasites among pupils of two primary schools in Nkpor and Mgbodohia communities, Obio/Akpor Local Government Area, Rivers State, Nigeria was conducted. The formo-ether concentration technique was used to concentrate and separate the eggs and cysts from the faeces. Out of 107 pupils (56males and 51 females) investigated, 81 (75.7 %) were positive for at least one gastrointestinal helminth. The parasites identified included Ascaris lumbricoide(58.0%), Hookworms(28.4%), Trichirus trichiura(13.6%) and A.lumbricoide + T. trichiura (6.3%). Ascaris lumbricoide was significantly (P<0.05) higher in prevalence than other parasites. Although more females (54.3%) were infected than males (45.7%), there was no significance(P>0.05) difference in the prevalence in relation to sex. Of the 44 males infected, 24(54.5%), 5 (11.4%), 13(29.5%) and 2(4.5%) haboured A. lumbricoide, T. trichiura, Hookworms and mixed infection (A. lumbricoide + T. trichiura) repectively. Out of the 37 females infected, 21 (56.8%), 3(8.1%), 10(27.0%) and 3(8.1%) haboured A. lumbricoide, T. trichiura, Hookworms and mixed infection (A. lumbricoide + T. trichiura) repectively. There was no significance difference in the prevalence of A. lumbricoide and Hookworms between males (54.5%) and females (56.8%). There was significant difference in prevalence among two major age groups (5-10years-45% and 11-15years-41.9%). Children within the age group of 16-20years had the least infection (9.9%). The intensities of A.lumbricoide, T.trichiura and hookworm were 246.5, 107.5 and 187 Epg respectively. The intensity of A. lumbricoide was significantly difference than other parasites identified.Soil transmited helminthes remain a public health concern among children in the study area. Provision of portable water, toilet facilities, good education on the epidemiology of STHs and regular de-worming will enhance control measures.


2017 ◽  
Vol 13 (22) ◽  
pp. 192
Author(s):  
Eboatu, V. N. ◽  
Igboka, Doris Oluchukwu

Academic achievement of students does not depend only on school, environmental factors and teacher characteristics, but also on the level of home involvement. This study therefore sought to establish the extent of parental school involvement for students’ improved academic achievement in Awka South Local Government Area of Anambra State. The descriptive survey design was used for this study, with six (6) research questions guiding the study. The population for the study comprised 417 public secondary school teachers from which a sample of 125 teachers using simple random sampling technique. The instrument for data collection was a researcher designed, structured questionnaire which was duly validated by experts in educational management and measurement and evaluation. The questionnaire was tested for reliability using test-retest method. The tool for correlation was the Pearson Product Moment Correlation and this yielded a co-efficient of 0.82. Data collected was analysed using mean and standard deviation statistics to answer the 6 research questions while ANOVA with Friedman’s Test was used to test for significant difference in the six indices of parental involvement. The findings show among others that teachers perceive that parents in Awka South Local Government Area effectively communicate with school and coach their children for improved academic achievement to a moderate extent. There was no significant difference in the teacher’s perception of parental involvement based on the six indices of involvement. Based on the findings, the researchers recommended among others, that parents and the school use social media and other devices to communicate more effectively with the school for improved students’ academic performance.


2019 ◽  
Vol 8 ◽  
pp. 361-379
Author(s):  
Christy Mbakohol Jirgba ◽  
Joy Iember Bur

This study examined the effects of self-regulated learning instructional strategy on students’ achievement in basic science among Upper Basic 2 in Makurdi Local Government Area of Benue State. The study employed non-equivalent group pre-test-post-test quasi experimental design. The population of the study was 638 upper basic school levels. The sample for this study was 128 students from six co-educational schools within Makurdi Local Government Area of Benue State. Two research questions and two hypotheses guided the study. The instrument used for data collection was Basic Science Achievement Test (BSAT) and was trial tested using Kuder-Richardson (K-R, 20) formula to determine the reliability coefficient of BSAT which was found to be 0.99. Descriptive statistics of means and standard deviation were used to answer all the research questions and inferential statistics of Analysis of Covariance (ANCOVA) was used to test all the hypotheses at 0.05 significant level. The results of the study showed that demonstration method enhanced students’ achievement in basic science better than self-regulated strategy. There is no significant difference between the mean achievement score of students taught basic science using self-regulated learning strategy and those taught using demonstration method. There was no significant difference between the mean achievement scores of male and female students taught basic science using self-regulate learning strategy. Basic science Teachers should not only use demonstration method to teach but also allow the student to actively participate in the learning. This can foster confidence in the students and enhance better achievement in basic science.


2010 ◽  
Vol 16 ◽  
pp. 117-141 ◽  
Author(s):  
S. Kathleen Lyons ◽  
Felisa A. Smith

Macroecology is a rapidly growing sub-discipline within ecology that is concerned with characterizing statistical patterns of species' abundance, distribution and diversity at spatial and temporal scales typically ignored by traditional ecology. Both macroecology and paleoecology are concerned with answering similar questions (e.g., understanding the factors that influence geographic ranges, or the way that species assemble into communities). As such, macroecological methods easily lend themselves to many paleoecological questions. Moreover, it is possible to estimate the variables of interest to macroecologists (e.g., body size, geographic range size, abundance, diversity) using fossil data. Here we describe the measurement and estimation of the variables used in macroecological studies and potential biases introduced by using fossil data. Next we describe the methods used to analyze macroecological patterns and briefly discuss the current understanding of these patterns. This chapter is by no means an exhaustive review of macroecology and its methods. Instead, it is an introduction to macroecology that we hope will spur innovation in the application of macroecology to the study of the fossil record.


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