JOURNAL ARTICLES

• Lima, M. A., Islam, Md. H., Neogi, S., Nasrin, K., Sen, A., Masood, A., David, G. S., Pathan, Md. M., Olalekan, B. A., Bordin, C., & Al Mamun Hridoy, Md. A. (2025). Recent advances in biochar technology for aquatic pollution control: A critical review of applications, barriers, and future opportunities. Discover Sustainability, 6(1), 980. https://doi.org/10.1007/s43621-025-01581-3

• Bordin, C., Hridoy, M. A. A. M., Pathan, M. M., Islam, S. M. S., Lima, M. A., Rahim, M. T. N., Mim, T. R., David, G. S., Ul Islam, M. A.-A., Masood, A., Ahmed, S., Baki, A. O., & Sa’adi, Z. (2025). Energy storage in the energy transition and blue economy: Challenges, innovations, future perspectives, and educational pathways. Discover Applied Sciences, 7(10), 1084. https://doi.org/10.1007/s42452-025-07720-9

• Hridoy, M. A. A. M., Akter, P., Bordin, C., Acharjee, M. R., Baki, A. O., Neogi, S., Masood, A., & David, G. S. (2025). Integrated assessment of heavy metal contamination and human health risks in granitic soils of South India: A multi-index approach to pollution and ecological impacts. Results in Surfaces and Interfaces, 20, 100628. https://doi.org/10.1016/j.rsurfi.2025.100628

• Umanah, S., David, G. (2025). Response of African Catfish Hybrid to Diets Supplemented with Varying Levels of Tryptophan. Trends in Agricultural Sciences, 4(3), 219-228. https://doi.org/10.17311/tas.2025.219.228

• Isangedighi, I.A., Abasiubong, T.M., David, G.S. (2025). Heavy Metal Accumulation and Nutrient Composition in Erpetoichthys calabaricus: Environmental and Human Health Implications. Asian Journal of Biological Sciences, 18(2), 432-442. https://doi.org/10.3923/ajbs.2025.432.442

• Oribhabor, B. J., Etuwede, T. G. and David, G. S. (2021). Determination of heavy metals contamination and microbiological characteristics of hand-dug wells and boreholes in Otueke, Bayelsa State. Proceedings of the 3rd Annual Conference of Freshwater Biological Association of Nigeria (FBAN), 12th – 16th September 2021, Uyo, Akwa Ibom State. pp. 266-273. 

• Umanah, S. I. and David, G. S. (2021). Implications of dietary Delonix regia seed meal on growth, feed utilization, haematology, and fillet yield of red Nile tilapia Oreochromis niloticus. World Journal of Advanced Research and Reviews, 12(1): 140-154. DOI: 10.30574/wjarr.2021.12.1.0508

• Umanah, S. I., Nlewadim, A. A. and David, G. S. (2021). The effect of dietary protein levels and female brood stock size on size heterogeneity among Heterobranchus longifilis Fingerlings. Asian Journal of Emerging Research, 3(1): 49-54.  DOI: 10.3923/ajerpk.2021.49.54

• Isangedighi, I. A., David, G. S. and Obot, O. I. (2020). Plastic waste in the aquatic environment: Impacts and Management. In: Analysis of Nanoplastics and Microplastics in Food, Nollet, L. M. L. and Saddiqi, K. S. (eds.). Boca Raton, Florida: CRC Press (Taylor and Francis Group). pp. 15-46. ISBN: 978-0-429-46959-6.  DOI: 10.1201/9780429469596-2

• Obot, O. I., David, G. S. and Ekpo, I. E. (2020). Zooplankton assemblages of a tropical coastal creek, southeastern Nigeria. Ecologia, 10(2): 63-70.  DOI: 10.3923/ecologia.2020.63.70

• Afia, O. E., David, G. S. and Umoren, I. U. (2020). Varying feeding levels and the growth response of North African catfish. South Asian Research Journal of Agriculture and Fisheries, 2(3): 56-62.  DOI: 10.36346/sarjaf.2020.v02i03.004

• Afia, O. E., and Kolawole, O. A. and David, G. S. (2020). Growth response of Clarias gariepinus (North African catfish) under varying feeding rates. Sumerianz Journal of Biotechnology, 3(11): 113-117.  DOI:  10.47752/sjb.311.113.117

• Obot, O. I., David, G. S. and Fombo, U. S. (2019): Spatial and temporal variations in the benthic macroinvertebrates of Douglas creek, south-eastern Nigeria. Journal of Aquatic Science and Marine Biology, 2(3): 01- 06.  DOI: 10.22259/2638-5481.0203001

• Afia, O. E. and David, G. S. (2019): Comparative effect of stocking densities and feeding levels on monthly growth response of hybrid catfish (Heterobranchus longifilis x Clarias gariepinus) in collapsible tanks. Journal of Aquatic Science and Marine Biology, 2(2): 28-32. DOI: 10.22259/2638-5481.0202004

• Afia, O. E., David, G. S. and Udo, I. U. (2019). Studies on the effects of feeding levels on growth response and nutrient utilization of Heteroclarias (hybrid catfish). Journal of Applied Sciences, 19(7): 725-730. DOI: 10.3923/jas.2019.725.730

• Umanah, S. I., George, E. M. and David, G. S. (2019). Growth performance and feed utilization of Heterobranchus bidorsalis fed with flamboyant seed meal substituted for wheat offal. Asian Journal of Biological Science, 12(4): 842-850. DOI: 10.3923/ajbs.2019.842.850

• Afia, O. E. and David, G. S. (2019). Haematology of hybrid catfish (Heteroclarias): Effects on stocking densities and feeding levels. Trends in Applied Sciences Research, 14(4): 271-277. DOI:  10.3923/tasr.2019.271.277

• Oribhabor, B. J., Akpan, A. E. and David, G. S. (2019). The food and feeding habits of fishes of a coastal Nigeria River. Scientific Research Journal, 7(9): 43-63. DOI: 10.31364/SCIRJ/v7.i9.2019.P0919697

• Isangedighi, I. A. and David, G. S. (2019). Heavy metals contamination in fishes: Effects on human health. Journal of Aquatic Science and Marine Biology, 2(4): 7-12.  DOI: 10.22259/2638-5481.0204002

• Obot, O. I., Ekpo, I. F. and David, G. S. (2019). The effect of sand mining on the physico-chemical parameters of Ikot Ekpan River, Akwa Ibom State, Nigeria. Journal of Aquatic Science and Marine Biology, 2(4): 21-24.  DOI: 10.22259/2638-5481.0204004

• Ekpo, I. E., Obot, O. I. and David, G. S. (2018): Impact of oil spill on living aquatic resources of the Niger Delta region: A review. Journal of Wetlands and Waste Management, 2(1): 48-57. 

• Afia, O. E., David, G. S. and Effiong I. B. (2018): Comparative effect of different stocking densities of Heteroclarias on plankton abundance in tarpaulin tanks. Journal of Aquatic Science and Marine Biology, 1(2): 5-12.  DOI: 10.22259/2638-5481.0102002

• Isangedighi, I. A., David, G. S. and Obot, O. I. (2018): Plastic waste in the aquatic environment: Impacts and management. Environment, 2(1): 1-31. DOI: 10.31058/j.envi.2018.21001

• David, G. S. and Afia, O. E. (2017): Growth performance, nutrient utilisation, and survival of African sharptooth catfish (Clarias gariepinus, Burchell 1822) fingerlings fed locally formulated and commercial pelleted diets reared in tarpaulin tanks. International Journal of Agricultural Research and Food Production, 2(1): 13-38. 

• Afia, O. and David, G. (2017): Growth performance of African catfish in lime treated ponds. Lambert Academic Publishing: Beau Bassin, Mauritius. 73pp. ISBN: 978-620-2-19786-1. 

• Afia, O. E. and David, G. S. (2017): Haematological profile and growth response of African sharptooth catfish (Clarias gariepinus, Burchell 1822) fingerlings to locally formulated and commercial pelleted diets in tarpaulin tanks. American Journal of Innovative Research and Applied Sciences, 5(6): 213-222.  

• Isangedighi, I. A., Obot, O. I., Udo, O. J. and David, G. S. (2017): Comparative study of the nutrient contents of cultured and wild African catfish (Clarias gariepinus, Burchell 1822). International Journal of Agriculture, Environment and Bioresearch, 2(5): 363-371. 

• Afia, O. E. and David, G. S. (2017): Cost-effectiveness, feed utilization and body composition of African sharptooth catfish (Clarias gariepinus, Burchell 1822) fingerlings fed locally formulated and commercial pelleted diets in tarpaulin tank. Tropical Freshwater Biology, 26 (2017): 39-52.  DOI: 10.4314/tfb.v26i1.4

• Obot, O. I., Etim, L. and David, G. S. (2016): Review of physical and chemical properties of some Nigerian creeks. Nigerian Journal of Agriculture, Food and Environment, 12(4): 82-90. 

• Obot, O. I., Isangedighi, A. I. and David, G. S. (2016): Heavy metals concentration in some commercial fishes in the lower Cross River estuary, Nigeria. Nigerian Journal of Agriculture, Food and Environment, 12(4): 218-223.  

TALKS/ORAL PRESENTATION

• David, G. S., Bussy, C., Kane, I. A. and Shiels, H. A. Systematic meta-synthesis of microplastics as vectors of contaminants in the aquatic environment: understanding biological impacts. Presented at the Doctoral Academy Graduate Society Summer Symposium 2025, Alan Turing Building, University of Manchester, 19th June 2025.

• David, G. S. Histopathological Assessment of Blue Mussels (Mytilus edulis) in a Contaminated Saltmarsh and a Contrasting Good Water Quality Bay. Thesis presented at the 7th Annual Symposium of IMBRSea, Université Côte d'Azur, Nice, France, July 1st to 5th, 2024.

• Okon, E. M., Ehigie, J. O., Falana, B. M., David, G. S., Arije, D., Kipchumba, A. K., Birikorang, H., Okocha, R. C., Sodipe, S., Adeleke, M.   Trends and Transitions of Aquaculture and Fisheries Research in Canada (2010 - 2023). Presented at the Aquaculture Association of Canada Conference, Prince Edward Island, Canada, held on June 16 -19, 2024. Presenter: Okon, E. M 

• David, G. S., Medina, M., Yurika, N. and Sharif, S. Investigating the bioindicator properties of calanoid copepods in response to paracetamol-induced pharmaceutical pollution in marine ecosystem. Presented at the 2023 IMBRSea Annual Joint School Symposium, Tjarno Marine Laboratory, Stromstad, Sweden, July 17th to 29th, 2023. 

• Oribhabor, B. J., Etuwede, T. G. and David, G. S. Determination of heavy metals contamination and microbiological characteristics of hand-dug wells and boreholes in Otueke, Bayelsa State. Presented at the 3rd Annual Conference of Freshwater Biological Association of Nigeria (FBAN), University of Uyo, Uyo, Nigeria, September 12th to 16th, 2021.

POSTER PRESENTATIONS

• David, G. S., Bussy, C., Kane, I. A., and Shiels, H. A. Systematic review of microplastics as vectors of contaminants in the aquatic environment: understanding biological impacts. Poster presented at the New and Emerging Organic Pollutant Analytics (NEOPA) Symposium, hosted by Manchester Environmental Institute, Core Technology Facility, University of Manchester, 2nd June 2025.

• David, G. S., Bussy, C., Kane, I. A., and Shiels, H. A. Systematic meta-synthesis of microplastics as vectors in aquatic environment: understanding biological impacts. Poster presented at the School of Medical Sciences  PGR Research Showcase, Nancy Rothwell Building, University of Manchester, 23rd May 2025.

• David, G. S., Bussy, C., Kane, I. A., and Shiels, H. A. Systematic meta-synthesis of microplastics as vectors: understanding biological impacts. Poster presented at the Biologists @100 conference, hosted by The Company of Biologists, ACC Liverpool, United Kingdom, 24th – 27th March 2025.

• David, G. S. Microplastics and microfibre pollution in the marine environment. Poster presented at the 6th Annual Joint School Symposium of IMBRSea, Tjarno Marine Laboratory, Stromstad, Sweden, July 17th to 29th, 2023.