Jimmy Brian Mboya

Dr. Jimmy Brian Mboya

orcid

Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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13 June 2024 in Aquaculture, Fish and Fisheries
Verified
Journal Article
Open access
MMMAVINDU MUTHOKA
MAVINDU MUTHOKA
KOKevin Okoth Ouko
Kevin Okoth Ouko
JMJimmy Brian Mboya
Jimmy Brian Mboya
MNMerceline Ndinda Ndambuki
Merceline Ndinda Ndambuki
Nicholas OutaNicholas Outa
Nicholas Outa
LNLucy Njogu
Lucy Njogu
Aquaculture is the world's fastest‐growing food‐producing sector, making it a significant contributor to food and nutrition security for the globally growing human population. Nevertheless, its long‐term growth is limited by the effects of climate change. Aquaculture in Sub‐Saharan Africa (SSA), which is dominated by small‐scale fish farming, is increasingly threatened by climate change, which has a substantial influence on its productivity and scalability. In this context, the present research looks at the socio‐economic consequences of climate change on small‐scale fish producers in SSA, as well as potential adaptation techniques to the effects of climate change. A clear understanding of these socio‐economic repercussions of climate change is critical for developing effective strategies to reduce future impacts and safeguard aquaculture‐based livelihoods. Furthermore, understanding the socio‐economic consequences of climate change on communities dependent on aquaculture is important for advising policymakers and decision‐makers on formulating and implementing policies that sustain aquaculture production amidst the climate change crisis. This article suggests various adaptation strategies to increase resilience to climate change, including diversification of livelihoods and species, use and incorporation of local and indigenous knowledge, shifting to aquaculture species less vulnerable to changing climatic conditions, capacity building through aquaculture insurance schemes, continued fish supply from capture fisheries, and consolidation of equity and human rights concerns. These adaptive methods, when combined, have the potential to enhance outcomes for populations who are more susceptible owing to their unstable socio‐economic conditions.

9 October 2022 in Aquaculture, Fish and Fisheries
Verified
Journal Article
Open access
KOKevin Obiero
Kevin Obiero
JMJimmy Brian Mboya
Jimmy Brian Mboya
KOKevin Okoth Ouko
Kevin Okoth Ouko
DODave Okech
Dave Okech
Fish cage culture has rapidly grown throughout Lake Victoria's shores, with Nile tilapia (Oreochromis niloticus) being the primarily cultured species. However, there is inadequate information on its economic viability. The study investigated the economic feasibility of fish cage farming system in Lake Victoria, Kenya, by evaluating the relationship between cost of inputs and revenue from fish sales and analysing the overall profitability of the fish cage culture in the lake. Systematic sampling was employed to select 200 cage farmers for the study. Structured questionnaire was used for data collection. Data was analysed using descriptive statistics, multiple regression analysis, gross margin analysis, net farm income and profitability ratios. The average quantity of fish produced in the production cycle was 11,971.53 kg from which an average of 9020.77 kg was sold at an average selling price of Kenyan Shillings (KSH) 281.36 (USD 2.60) per kg. The multiple regression results revealed that the cost of feeds (coefficient of −0.603) and fish seed (coefficient of −0.387) had a significant influence on returns from fish cage culture business at p < 0.01 and p < 0.05, respectively. The costs of feeds and fish seed were significant components of the total production cost, accounting for 60.25% and 33.50%, respectively. Fish cage production was profitable, with an average gross margin of KSH 1146,727.68 (USD 10,545.59) and net farm income of KSH 1020,518.78 (USD 9384.94) in a production cycle, with a benefit cost ratio of 1.43, an expense structure ratio of 0.06, a gross revenue ratio of 0.70 and a return on investment of 0.43. The study recommends formulation of friendly policies, legislations, operating guidelines and an enabling environment for feed and fish seed producers by policy makers to enhance fish feed and seed production and subsequently reduce prices of feed and seed. Through this, economic viability of fish cage culture will be enhanced.

16 January 2025 in Aquaculture Nutrition
Verified
Journal Article
Open access
JMJonathan Mbonge Munguti
Jonathan Mbonge Munguti
MMMAVINDU MUTHOKA
MAVINDU MUTHOKA
JMJimmy Brian Mboya
Jimmy Brian Mboya
DKDomitila Kyule
Domitila Kyule
MMMenaga Meenakshisundaram
Menaga Meenakshisundaram
CTChrysantus Tanga
Chrysantus Tanga
Aquaculture plays a critical role in global food security, with Nile tilapia ( Oreochromis niloticus ) recognized for its adaptability and robust growth. However, traditional feeds, heavily reliant on fishmeal (FM) and soybean meal, face economic and environmental challenges. In response, black soldier fly larvae meal (BSFLM) has emerged as a promising, nutrient‐dense alternative. This review synthesizes existing literature on BSFLM’s nutritional profile and its suitability for Nile tilapia diets, while acknowledging that the data come from diverse independent studies conducted under varying environmental conditions and husbandry practices. BSFLM consistently provides high‐quality protein (29.9%–48.2%), aligning with tilapia’s requirements, and is rich in essential minerals and fatty acids. While its lipid content (25.69%–28.43%) may require processing adjustments, the overall profile supports tilapia health and growth. Trends from case studies suggest that certain systems, such as hapas placed in ponds, have reported favorable growth and feed conversion efficiencies at 50% FM replacement levels. However, these findings cannot be directly compared across all studies due to differences in methodologies, culture conditions, and inclusion rates. Instead, they collectively indicate that BSFLM can effectively replace traditional protein sources and enhance sustainability. As research and production scale up, careful consideration of context, system design, and feed formulations will be essential. Collaborative efforts among researchers, industry, and policymakers will further refine the use of BSFLM, ultimately advancing the environmental and economic sustainability of Nile tilapia aquaculture.

4 December 2023 in Aquaculture, Fish and Fisheries
Verified
Journal Article
Open access
MMMAVINDU MUTHOKA
MAVINDU MUTHOKA
EOErick Ogello
Erick Ogello
Nicholas OutaNicholas Outa
Nicholas Outa
KOKevin O. Obiero
Kevin O. Obiero
JMJimmy Brian Mboya
Jimmy Brian Mboya
BMBramwel O. Mukaburu
Bramwel O. Mukaburu
Lake Victoria is the second‐largest freshwater lake in the world, with a surface area of 68,800 km2. The lake is rich in natural resources that are essential to the local economy and livelihoods. However, International Union for Conservation of Nature (IUCN) ranks 76% of freshwater species endemic to the Lake Victoria Basin as threatened with extinction. The biodiversity richness of the lake is still diminishing, and the risk of species extinction is increasing. Many species are yet to be identified, and thus the number of species threatened with extinction exceeds what is currently known. Furthermore, the lake is home to species that are found nowhere else on the planet, but its protection is never given the attention it needs. Genetic diversity loss is harmful to future populations and influences sustainability of the ecosystem. The decline in Lake Victoria's biodiversity is primarily attributed to various pressing issues, including water pollution, invasive species, climate change, overexploitation and the challenges stemming from high human population density. These problems are exacerbated by inadequate regulatory enforcement and a lack of comprehensive data and information to inform and guide conservation efforts. If these factors are not addressed, they may have a detrimental impact on Lake Biodiversity. This article aims to document the main threats to aquatic biodiversity as well as potential management strategies for preventing further losses of the aquatic biodiversity in Lake Victoria. The study recommends reviewing, bolstering and reinforcing the rules and regulations governing the extraction, accessibility and discharge of nutrients into the lake. The national governments should work with local governments, non‐governmental organizations and local people to safeguard and conserve the lake's biodiversity. The national governments of the riparian nations should also reserve funds each fiscal year specifically for research that would inform effective management measures to prevent further losses of the lake's biodiversity.

1 January 2024 in Aquaculture Research
Verified
Journal Article
Open access
KOKevin Obiero
Kevin Obiero
EOErick Ogello
Erick Ogello
JMJonathan Mbonge Munguti
Jonathan Mbonge Munguti
JMJimmy Brian Mboya
Jimmy Brian Mboya
DKDomitila Kyule
Domitila Kyule
RYRodrigue Yossa
Rodrigue Yossa
Climate‐smart agriculture (CSA) has been promoted in Kenya as a panacea for climate change impacts on agricultural productivity. Consequently, various climate‐smart aquaculture technologies, innovations, and management practices (CSA‐TIMPs) have been developed, validated, and adopted through the Kenya Climate‐Smart Agriculture Project (KCSAP). Nevertheless, there has been no evaluation of the climate‐smartness of the CSA‐TIMPs for priority setting. In this study, we evaluated and ranked the CSA‐TIMPs using a modified Climate‐smart Agriculture Prioritization Framework (CSA‐PF). The prioritization process included multistakeholder validation workshops involving researchers, fisheries officers, farmers, traders, and policy makers. The climate‐smartness scores of the CSA‐TIMPs were given based on the CSA pillars (i.e., adaptation, mitigation, and productivity) under various climate‐smartness indicators, with a score ranging from −10 (for a negative impact) to +10 (for a positive impact). This resulted in the identification and documentation of forty (40) CSA‐TIMPs. Climate‐smartness scores varied from 3.8 to 6.1, with higher values indicating strong synergies between the CSA pillars, with productivity having the highest average score of 6.4. The top 5 list of CSA‐TIMPs with the best synergies among the CSA pillars was then developed for prioritization. Adoption of these CSA‐TIMPs would be instrumental in achieving the CSA triple wins, especially in improving aquaculture productivity. Therefore, sustained efforts in stakeholder engagement, capacity building, and policy support are essential to ensure the successful adoption of CSA‐TIMPs in Kenya. A dynamic approach that includes continuous validation, comprehensive monitoring and evaluation, and an enabling environment for adoption will be key to achieving sustainable and scalable impacts.

10 February 2023 in Aquaculture, Fish and Fisheries
Verified
Journal Article
Open access
KOKevin Odhiambo Obiero
Kevin Odhiambo Obiero
JMJimmy Brian Mboya
Jimmy Brian Mboya
KOKevin Okoth Ouko
Kevin Okoth Ouko
EKElijah Migiro Kembenya
Elijah Migiro Kembenya
ENElizabeth Akinyi Nyauchi
Elizabeth Akinyi Nyauchi
CGCecilia Muthoni Githukia
Cecilia Muthoni Githukia