scholarly journals Thrips (Thysanoptera) of vegetable crops (okro, spinach, garden egg and pumpkin) grown in Southeastern Nigeria

2011 ◽  
Vol 39 (No. 4) ◽  
pp. 132-138 ◽  
Author(s):  
E.T. Oparaocha ◽  
R.N. Okigbo
Keyword(s):  
Lower Number ◽  
Frequency Of Occurrence ◽  
Vegetable Crops ◽  
Southeastern Nigeria ◽  
Amaranthus Hybridus ◽  
Solanum Incanum ◽  
Telfairia Occidentalis ◽  
Port Harcourt ◽  
Microscopic Studies ◽  
Hibiscus Esculentus

Eight vegetable crops were sampled at five localities in Southeastern Nigeria and were found to harbour one or more species of thrips. The crops were Amaranthus hybridus, A. spinosus, Basella rubra, Solanum incanum, S. melongena, Hibiscus esculentus, Telfairia occidentalis and a species of Solanum. The sampled localities, with the frequency of occurrence of thrips, were Umuahia (29.6%), Owerri (28.5%), Port Harcourt (25.7%), Calabar (18.7%) and Enugu (6.0%). The studies revealed that crops with very heavy infloresences, e.g. Amaranthus hybridus, had a higher number of thrips (40%) per flower/leaf, while simple flowered crops like Telfairia occidentalis could only harbour a far lower number of thrips per flower/leaf. This showed a preference of these thrips for plants with heavy inflorescences which provided them with more protection, especially their larvae. Taxonomic/microscopic studies identified three species of thrips: Haplothrips gowdeyi that attacked 63% of all the sampled crops, Frankliniella schultzei was hosted by 50% of the crops, and Megalurothrips ventralis also preyed on 50% of the plant samples.  

scholarly journals Concentration of Trace Metals (Lead, Iron, Copper and Zinc) In Crops Harvested in Some Oil Prospecting Locations in River State, Nigeria

2005 ◽  
Vol 5 (9) ◽  
pp. 01-21
Author(s):  
Alexander Hart ◽  
◽  
Oboh CA ◽  
Barimalaa IS ◽  
TG Sokari
Keyword(s):  
Trace Metals ◽  
State University ◽  
Industrial Base ◽  
Iron Copper ◽  
Copper And Zinc ◽  
Port Harcourt ◽  
Zinc Concentrations ◽  
Hibiscus Esculentus ◽  
High Level ◽  
Rivers State

Concentrations of the trace metals lead, iron, copper and zinc were estimated in crops harvested in some oil prospecting locations in Rivers State, Nigeria. The locations were; Agbada-Aluu (AA), Ebocha (EB), Idu Ekpeye (IE), Obagi (OB) and Trans Amadi Layout (TA), with the Teaching and Research Farm of Rivers State University of Science and Technology, Port Harcourt as control. Crops investigated were cassava (Manihot esculenta), cocoyam (Colocasia esculenta), okra (Hibiscus esculentus), pumpkin leaves (Telfairia occidentalis) and waterleaf (Talinum traingulare). Results of the mean lead concentrations were from 1.1µg/g in cocoyam to 9.1 µg/g in okro, showing higher trends in the industrialized areas. While cocoyam had the lowest lead concentration, the concentration rest of the crops did not differ significantly from one another. Crops from locations TA, OB, IE and EB had significantly higher concentrations of lead, although IE, AA and TF were not significantly different from one another. Mean concentrations of iron were between 40 µg/g in cassava from TF, and 651 µg/g in pumpkin leaves from TA - the industrial base of Rivers State - reflecting a high level of pollution from the various industries in that location. Differences in concentration of iron in crops showed pumpkin leaves to have the highest level of iron, followed by the other green vegetables – waterleaf and okra - although no significant differences occurred between okra, cocoyam and cassava. Copper concentrations were between 4.4 µg/g in cocoyam from locations TF and 23 µg/g in pumpkin leaves from TA. Pumpkin leaves had the highest concentrations of copper, followed by okra, then waterleaf, with cocoyam and cassava having the least significant levels. Zinc concentrations in crops were between 29 µg/g in cocoyam from TF to 240 µg/g in pumpkin leaves from EB. Pumpkin leaves and okra contained the highest levels of the metal, followed by waterleaf, then cassava and finally cocoyam. In terms of location, TA, OB and EB had the highest concentrations in crops, the least occurring in TF and AA. These results reflect higher concentrations of metals in crops from the industrialized locations, with the green vegetables, particularly pumpkin leaves, having the highest uptake, while cocoyam invariably had the least. These findings give cause for concern, particularly as heavy metals are bio-accumulative in the system and portend a serious health risk to man and animals.

scholarly journals Biodeterioration of Classroom Wall Surfaces in the University of Port Harcourt, Nigeria

2019 ◽  
pp. 1-8
Author(s):  
B. C. Anele ◽  
P. O. Okerentugba ◽  
H. O. Stanley ◽  
C. J. Ugboma
Keyword(s):  
Physicochemical Parameters ◽  
Biochemical Characterization ◽  
Diffusion Method ◽  
Frequency Of Occurrence ◽  
Bacterial Isolates ◽  
Port Harcourt ◽  
Aspergillus Fumigates ◽  
Bacillus Spp ◽  
Antibiotics Susceptibility ◽  
The University

Aim: This study investigated the biodeterioration of classroom wall surfaces in the University of Port Harcourt, Nigeria. Study Design: Scrapings from selected classroom wall surfaces were analyzed for their microbiological and physicochemical parameters. Isolated bacteria were screened for their antibiotics susceptibility. Place and Duration of Study: This study was carried out at the University of Port Harcourt between March - June 2018. Methods: The population of culturable bacterial and fungal biodeteriogens was determined by plating. Physicochemical parameters were determined using standard methods. Antibiotic susceptibility pattern of the bacterial isolates was determined using the disc diffusion method. Results: The total culturable heterotrophic bacterial counts ranged from 6.48 to 8.23 log CFU/g while the total fungal counts ranged from 5.00 to 7.28 log CFU/g. The bacterial isolates identified by biochemical characterization and their frequency of occurrence are Micrococcus spp. (7.3%), Citrobacter spp. (3.2%), Bacillus spp. (39.1%), Serratia spp. (3.2%), Corynebacterium spp. (10.9%), Staphylococcus aureus (20.1%), Proteus spp. (9.2%) and Shigella spp (7.0%). The fungal isolates and their frequency of occurrence are Aspergillus flavus (39.1%), Penicillium spp. (20.1%), Microsporium canis (14.3%), Coccidioides spp. (10.9%), Aspergillus fumigates (3.2%) and Tricophyton spp (3.2%). All antibiotics used showed activity against all bacterial isolates except Proteus spp. From the results of the physicochemical parameters, pH values ranged from 6.15 to 9.01, nitrate ranged from 5.30 to 14.83 mg/kg, phosphate ranged 2.19 to 5.94 mg/kg, sulphate ranged from 12.97 to 19.07 mg/kg and Total Organic Carbon ranged from 74.89 to 119.43 mg/kg. Conclusions: This study has shown the potential public health risk associated with classroom building deterioration owing to the presence of pathogenic microorganisms. Therefore, measures towards prevention and mitigation of classroom building biodeterioration should be in place.

Metastenasellus Powelli Sp. N., a New Stenasellid Isopod Crustacean From Littoral Groundwaters of Southeastern Nigeria

Crustaceana ◽  
1979 ◽  
Vol 37 (3) ◽  
pp. 265-276 ◽  
Author(s):  
Guy Magniez
Keyword(s):  
Southeastern Nigeria ◽  
Port Harcourt ◽  
Eaux Souterraines

AbstractContrairement à tous les autres Sténasellides, qui vivent dans les eaux souterraines continentales (grottes, nappes phréatiques, sources thermales), la nouvelle espèce a été trouvée dans la zone oligohaline du littoral, près de Port Harcourt, Nigéria. Description de Metastenasellus powelli sp. n. affinités de cette nouvelle espèce, aire géographique et diagnose rénovée du genre Metastenasellus Magniez, 1966, liste des espèces connues à ce jour.

scholarly journals PRELIMINARY OBSERVATIONS ON THE SEMINAL CHARACTERISTICS OF RABBITS RAISED IN TWO LOCATIONS IN SOUTHEASTERN NIGERIA.

2021 ◽  
Vol 22 (2) ◽  
pp. 108-112
Author(s):  
U. Herbert ◽  
C. O. Acha
Keyword(s):  
Sperm Motility ◽  
Semen Quality ◽  
Sperm Concentration ◽  
Southeastern Nigeria ◽  
Abnormal Sperm ◽  
Port Harcourt ◽  
Semen Volume ◽  
Live Sperm ◽  
Artificial Vagina ◽  
Time Of Collection

A total of sixteen rabbits sourced from two locations in Southeastern Nigeria were used for this study. Semen was collected from all the rabbits twice weekly for eight weeks using an artificial vagina while observation on the effect of time of collection on semen quality were also made. The results obtained indicated that time of collection had no significant effect (P > 0.05) on all the seminal characteristics measured. However, source of the animals showed significant effect (P < 0.05) on semen volume, sperm concentration, total sperm per ejaculate and proportion of abnormal sperm. Average semen volume, sperm concentration and total sperm per ejaculate were: 0.69±0.007 ml, 104.0±1.44 x 106/m1 and 71.40±0.90x106 respectively for the rabbits sourced from Port Harcourt. The corresponding values for rabbits sourced from Owerri were: 0.66±0.008m1, 96.02 ±1.63x106iml and 63.49±1.50 x 106 respectively. Abnormal sperm proportions were 11.05±0.22% and 1216 ± 032% for the rabbits sourced from Port Harcourt and Owerri respectively. There were no significant (P> 0.05) differences observed between locations in live sperm concentration and sperm motility. Live sperm concentration and sperm motility were 87.75±1.09% and 71.62±0.74% for the Port Harcourt group, while the values obtained for the Owerri group were 88.06±034% and 71.19±0.89% respectively.  

scholarly journals Kell Blood Group Antigens Not Found in Indigenes of Ogoni Ethnic Group of Rivers State, Nigeria

2020 ◽  
pp. 1-5
Author(s):  
Serekara Gideon Christian ◽  
Evelyn Mgbeoma Eze ◽  
Anthony Chijioke Uzoanya Ezimah ◽  
Fiekumo Igbida Buseri
Keyword(s):  
Ethnic Group ◽  
Blood Group ◽  
Niger Delta ◽  
Parental Origin ◽  
Blood Group Antigens ◽  
Frequency Of Occurrence ◽  
Expiry Date ◽  
Percentage Distribution ◽  
Port Harcourt ◽  
Rivers State

Aim: The aim of the study was to determine the frequency of occurrence and percentage distribution of Kell blood group antigens in indigenes of Ogoni ethnic group of Rivers State, Nigeria. Study Design:  This was a cross-sectional study carried out among indigenes of Ogoni whose first generational parental origin is Ogoni. A total of 101 subjects (49 females and 52 males), within the age of 30–60 years were recruited for the study and they were apparently healthy and free from transfusion transmissible infections upon serological screening. Place and Duration of Study: Ogoniland is located in an area along the Niger Delta Eastern edge, and to the north-east of the Imo River and Port Harcourt city. Ogoniland covers about 1036 Sq Km and borders the Bay of Guinea. All participants were recruited in Bori. Bori is the traditional headquarter of Ogoni. Bori is located on latitude: 4040ʹ34.64ʺ N and longitude: 7021ʹ54.68ʺ E. The analysis was carried out at the Post Graduate Laboratory of Rivers State University, Nkpolu-Oroworukwo, Port Harcourt, Rivers State, Nigeria. Port Harcourt, the capital of Rivers State, is located on latitude 4.750N and longitude 7.000E and lies along Bonny River in the Niger Delta. All subjects were recruited the same day and their blood samples collected on 2nd October, 2019, and analysis conducted on 3rd October, 2019. Methodology: Identification of Kell blood group antigens was done using Anti-Kell monoclonal reagent, prepared by Lorne Laboratories Ltd, UK. Lot No: 76090-A5; Expiry Date: 2021/02/21. Phenotyping of red cells was done using tube method as described by Lorne Laboratory Ltd. Results: The result showed zero frequency of occurrence and percentage distribution of Kell blood group antigen in the studied population (49 males and 52 females). Conclusion: The presence of Kell blood group antigens in indigenes of Ogoni recruited for the study which serve as representative of the Ogonis was rare. It is therefore necessary to take into cognizance that haemolytic transfusion reactions due to Kell antigens and antibodies will rarely occur, and as such Kell blood group is not significant in blood transfusion and in antenatal and blood group serology amongst the Ogonis.

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