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16 results on '"Botwe, Paul K."'

8. Urinary Pesticide Residual Levels and Acute Respiratory Infections in Children Under 5 Years of Age: Findings From the Offinso North Farm Health Study

Author

Akyeampong, Enoch, primary, Bend, John R, additional, Luginaah, Isaac, additional, Oscar Yawson, David, additional, Jerry Cobbina, Samuel, additional, Ato Armah, Frederick, additional, Osei Adu, Michael, additional, Kofi Essumang, David, additional, Iddi, Samuel, additional, Botwe, Paul K, additional, and Quansah, Reginald, additional

Published
2022
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10. Effects of elevated temperatures on the development of immature stages of Anopheles gambiae (s.l.) mosquitoes.

Author

Agyekum, Thomas P., Arko‐Mensah, John, Botwe, Paul K., Hogarh, Jonathan N., Issah, Ibrahim, Dwomoh, Duah, Billah, Maxwell K., Dadzie, Samuel K., Robins, Thomas G., and Fobil, Julius N.

Abstract

Objective: This study investigated the effects of temperature on the development of the immature stages of Anopheles gambiae (s.l.) mosquitoes. Methods: Mosquito eggs were obtained from laboratory established colonies and reared under eight temperature regimes (25, 28, 30, 32, 34, 36, 38 and 40°C), and 80 ± 10% relative humidity. Larvae were checked daily for development to the next stage and for mortality. Pupation success, number of adults produced and sex ratio of the newly emerged adults were recorded. Larval survival was monitored every 24 h, and data were analysed using Kaplan–Meier survival analysis. Analysis of variance was used where data followed normal distribution, and a Kruskal–Wallis test where data were not normally distributed. Larval and pupal measurements were log‐transformed and analysed using ordinary least square regression with robust standard errors. Results: Increasing the temperature from 25 to 36°C decreased the development time by 10.57 days. Larval survival (X2(6) = 5353.12, p < 0.001) and the number of adults produced (X2(5) = 28.16, p < 0.001) decreased with increasing temperature. Increasing temperatures also resulted in significantly smaller larvae and pupae (p < 0.001). At higher temperatures, disproportionately more male than female mosquitoes were produced. Conclusions: Increased temperature affected different developmental stages in the life cycle of An. gambiae (s.l.) mosquitoes, from larval to adult emergence. This study contributes to the knowledge on the relationship between temperature and Anopheles mosquitoes and provides useful information for modelling vector population dynamics in the light of climate change. [ABSTRACT FROM AUTHOR]

Published
2022
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11. Development of an observation-based tool for ergonomic exposure assessment in informal electronic waste recycling and other unregulated non-repetitive work

Author

Acquah, Augustine A., primary, D’Souza, Clive, additional, Martin, Bernard, additional, Arko-Mensah, John, additional, Asabea Nti, Afua, additional, Kwarteng, Lawrencia, additional, Takyi, Sylvia, additional, Botwe, Paul K., additional, Tettey, Prudence, additional, Dwomoh, Duah, additional, Quakyi, Isabella A., additional, Robins, Thomas G., additional, and Fobil, Julius N., additional

Published
2020
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12. Effects of Elevated Temperatures on the Growth and Development of Adult Anopheles gambiae (s.l.)(Diptera: Culicidae) Mosquitoes

Author

Agyekum, Thomas P, Arko-Mensah, John, Botwe, Paul K, Hogarh, Jonathan N, Issah, Ibrahim, Dwomoh, Duah, Billah, Maxwell K, Dadzie, Samuel K, Robins, Thomas G, and Fobil, Julius N

Abstract

Higher temperatures expected in a future warmer climate could adversely affect the growth and development of mosquitoes. This study investigated the effects of elevated temperatures on longevity, gonotrophic cycle length, biting rate, fecundity, and body size of Anopheles gambiae (s.l.)(Diptera: Culicidae) mosquitoes. Anopheles gambiae (s.l.)eggs obtained from laboratory established colonies were reared under eight temperature regimes (25, 28, 30, 32, 34, 36, 38, and 40°C), and 80 ± 10% RH. All adults were allowed to feed on a 10% sugar solution soaked in cotton wool; however, some mosquitoes were provided blood meal using guinea pig. Longevity was estimated for both blood-fed and non-blood-fed mosquitoes and analyzed using the Kaplan–Meier survival analysis. One-way ANOVA was used to test the effect of temperature on gonotrophic cycle length, biting rate, and fecundity. Adult measurement data were log-transformed and analyzed using ordinary least square regression with robust standard errors. Increasing temperature significantly decreased the longevity of both blood-fed (Log-rank test; X2(4) = 904.15, P< 0.001) and non-blood-fed (Log-rank test; X2(4) = 1163.60, P< 0.001) mosquitoes. In addition, the fecundity of mosquitoes decreased significantly (ANOVA; F(2,57) = 3.46, P= 0.038) with an increase in temperature. Body size (β = 0.14, 95% CI, 0.16, 0.12, P< 0.001) and proboscis length (β = 0.13, 95% CI, 0.17, 0.09, P <0.001) significantly decreased with increasing temperature from 25 to 34°C. Increased temperatures expected in a future warmer climate could cause some unexpected effects on mosquitoes by directly influencing population dynamics and malaria transmission.

Published
2022
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14. Effect of Particulate Matter Exposure on Respiratory Health of e-Waste Workers at Agbogbloshie, Accra, Ghana

Author

Amoabeng Nti, Afua Asabea, primary, Arko-Mensah, John, additional, Botwe, Paul K., additional, Dwomoh, Duah, additional, Kwarteng, Lawrencia, additional, Takyi, Sylvia Akpene, additional, Acquah, Augustine Appah, additional, Tettey, Prudence, additional, Basu, Niladri, additional, Batterman, Stuart, additional, Robins, Thomas G., additional, and Fobil, Julius N., additional

Published
2020
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