Biography

I hold a PhD in Fisheries Science from Kenyatta University, Nairobi, Kenya, MSc in Fisheries and Aquatic Sciences (Aquaculture) and a degree in Fisheries and Aquatic Sciences from Moi University, Eldoret, Kenya. I have 12years of research experience, aquaculture management and program coordination in the aquaculture sector. I havepublished 33 scientific publications in peer-refereed journals, over 18conferenceproceedings and have supervised several students attached to the stations where I have worked at NARDTC Sagana. I am a member of scientific bodies including Sustainable Aquaculture Research Networks in Sub-Saharan Africa (SARNISSA) and East African Austrian Water Association (EAAWA). I have experience withinternationaland regional organizations such as UK Research and Innovation, London International Development Centre (LIDC), Flemish Interuniversity Council (VLIR-UOS), Association for Strengthening Agricultural Research in East and Central Africa(ASARECA), and VicRes-IUCEA in the area of fisheries and aquaculture. Currently, I am a Research Scientistat KMFRI, based at the National Aquaculture Research Development and Training Centre and I have served as aResearch officer with Kenya Marine and Fisheries Research Institute (KMFRI), from April, 2009 to date.I have worked as the Program coordinator aquaculture fresh water systems in KMFRI from October 2013 to July, 2014where I wasin charge of supervision and coordination of research activities being undertaken in the program and performance evaluation of researchers in the program. I am the National coordinator of the fish seed quality assessment in the country for both private and public fish hatcheries where my responsibilities are monitoring and evaluation of the performance of the hatcheries, coordinating the development of Tilapia and Catfish seed standards and authentication of new hatcheries; which has led to the supply of seed to meet the demand of fish seed across the country. I am also a member of the National technical team responsible for the development of the Manual of Standard Operating Procedure for Fish Inspection and Quality Assurance for Fish business operators in Kenya. Additionally am a technical member of the East Africa Community taskforce on development of technical guidelines for fish seed in East Africa Community. I have been a resource person in training of fish farmers, Hatchery managers, processors, traders, students and government extension officers in Good aquaculture practices, Sanitary and phytosanitary requirements in Aquaculture, Ornamental fishery, Seed production and hatchery management, Aquaculture entrepreneurship, Aquaculture economics, Aquaculture nutrition, Fish health management and general aquaculture management. I have previously served as a research assistant at CARE Kenya an international NGO dealing in small holder livelihood projects.

Area of Interest:

Plant and Soil Sciences

100%

Aquaculture Economics

62%

Aquaculture Production

90%

Genetic Improvement

75%

Seed Production

55%

Research Publications in Numbers

Books
12

Chapters
5

Articles
33

Abstracts
27

Selected Publications

Opiyo, M.A., P. Orina and H. Charo-Karisa, 2017. Fecundity, growth parameters and survival rate of three African catfish (Clarias gariepinus) strains under hatchery conditions. J. Aquaculture Eng. Fish. Res., 3: 75-81.
CrossRef | Direct Link |
Opiyo, M.A., P. Orina, D. Kyule, J.M. Munguti, B.M. Nyonje and H. Charo-Karisa, 2016. Growth performance and survival of three African Catfish (Clarias gariepinus, Burchell 1882) strains reared in hapas in Kenya. Bull. Anim. Health Prod. Afr., 64: 31-39.
Opiyo, M.A., J.B. Mugo, D. Kyule and G. Okemwa, 2016. Overview of ornamental fish production in Kenya: Current status, opportunities and challenges. Bull. Anim. Health Prod. Afr., 64: 193-200.
Oluoch-Otiego, J., E. Oyoo-Okoth, K.K.G. Kiptoo, E.J. Chemoiwa and C.C. Ngugi et al., 2016. PCBs in fish and their cestode parasites in Lake Victoria. Environ. Monitoring Assess., Vol. 188. 10.1007/s10661-016-5483-0.
CrossRef |
Kyule, D., M.A. Opiyo, E. Ogello, K. Obiero and B. Maranga et al., 2016. Determination of fish value added product- preferences among the residents of Wote Town, Makueni county, Kenya. Bull. Anim. Health Prod. Afr., 64: 69-78.
Githukia, C.M., E.M. Kembenya and M.A. Opiyo, 2016. Anaesthetic effects of sodium bicarbonate at different concentrations on African catfish (Clarias gariepinus) juveniles. J. Aquaculture Eng. Fish. Res., 2: 151-157.
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Mugo‐Bundi, J., E. Oyoo‐Okoth, C.C. Ngugi, D. Manguya‐Lusega and J. Rasowo et al., 2015. Utilization of Caridina nilotica (Roux) meal as a protein ingredient in feeds for Nile tilapia (Oreochromis niloticus). Aquaculture Res., 46: 346-357.
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Orina, P.S., J.O. Rasowo, M.A. Opiyo, P. Boera, J. Abwao and H. Charo-Karisa, 2014. Optimization of seed and broodstock transport densities for improved survival of survival of African carp (Labeo victorianus, Boulenger, 1901). Int. J. Chem. Stud., 2: 34-42.
Orina, P.S., J.M. Munguti, M.A. Opiyo and H. Charo-Karisa, 2014. Optimization of seed and broodstock transport densities for improved survival of cultured Nile tilapia (Oreochromis niloticus, L. 1758). Int. J. Fish. Aquatic Stud., 1: 157-161.
Opiyo, M.A., J.M. Munguti, E.O. Ogello and H. Charo-Karisa, 2014. Growth response, survival and profitability of Nile tilapia (Oreochromis niloticus) fed at different feeding frequencies in fertilized earthen ponds. Int. J. Sci. Res., 3: 893-898.
Opiyo, M.A., C.M. Githukia, J.M. Munguti and H. Charo-Karisa, 2014. Growth performance, carcass composition and profitability of Nile tilapia (Oreochromis niloticus L.) fed commercial and on-farm made fish feed in earthen ponds. Int. J. Fish. Aquat. Stud., 1: 12-17.
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Opiyo, M.A., C.C. Ngugi and J. Rasowo, 2014. Combined effects of stocking density and background colour on growth performance and survival of Nile tilapia (Oreochromis niloticus, L.) fry reared in aquaria. J. Fish. Sci., 8: 228-237.
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Obiero, K., M.A. Opiyo, M.J. Munguti, P.S. Orina and D. Kyule et al., 2014. Consumer preference and marketing of farmed Nile Tilapia (Oreochromis niloticus) and African Catfish (Clarias gariepinus) in Kenya: Case study of Kirinyaga and vihiga counties. Int. J. Fish. Aquatic Stud., 1: 67-76.
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Munguti, J.M., S. Musa, P.S. Orina, D.N. Kyule, M.A. Opiyo, H. Charo-Karisa and E.O. Ogello, 2014. An overview of current status of Kenyan fish feed industry and feed management practices, challenges and opportunities. Int. J. Fish. Aquatic Stud., 1: 128-137.
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Kyule, D.N., E. Yongo, M.A. Opiyo, K. Obiero, J.M. Munguti and H. Charo-Karisa, 2014. Fish product development and market trials of fish and fish products in Kenya: A case study of Kirinyaga and Meru counties. Livestock Res. Rural Dev., 26: 6-13.
Opiyo, M.A., E.O. Ogello and H. Charo-Karisa, 2013. Effectiveness of sodium bicarbonate as an anaesthetic for different sizes of Nile tilapia (Oreochromis niloticus L., 1758) juveniles. Int. J. Aquatic Sci., 4: 14-22.
Charo-Karisa, H., M.A. Opiyo, J.M. Munguti, E. Marijani and L. Nzayisenga, 2013. Cost-benefit analysis and growth effects of pelleted and unpelleted on-farm feed on African catfish (Claries gariepinus Burchell 1822) in earthen ponds. Afr. J. Food Agric. Nutr. Dev., 13: 8019-8033.
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Ogello, E.O., R. Omondi, M.A. Opiyo, H. Charo‐Karisa, J. Munguti and C.M. Aura, 2012. Survival and avoidance response of the freshwater gastropod Melanoides tuberculatus (Muller) to different concentrations of tobacco waste. Aquaculture Res., 43: 1571-1576.
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Munguti, J., H. Charo-Karisa, M.A. Opiyo, E.O. Ogello, E. Marijani, L. Nzayisenga and D. Liti, 2012. Nutritive value and availability of commonly used feed ingredients for farmed Nile tilapia (Oreochromis niloticus L.) and African catfish (Clarias gariepinus, Burchell) in Kenya, Rwanda and Tanzania. Afr. J. Food Agric. Nutr. Dev., 12: 6135-6155.
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Ogello, E.O. and M.A. Opiyo, 2011. A review of the African catfish production in Kenya: Opportunities and challenges. Samaki News, 7: 18-20.