Siyanbola Omitoyin

@ui.edu.ng

Senior Lecturer, Department of Aquaculture and Fisheries Management, Faculty of Renewable Natural Resources
University of Ibadan

Siyanbola Omitoyin


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https://researchid.co/sb

RESEARCH INTERESTS

Aquaculture /Fisheries Management, Policy and Gender
6

Scopus Publications

247

Scholar Citations

8

Scholar h-index

7

Scholar i10-index

Scopus Publications

  • Role of credit access, improved varieties, and gender dynamics in commercialization of cassava seeds in Nigeria
    D.O. Abioye, M. Yami, V. Fillipi, S. Omitoyin, A.I. Ogunniyi, A.P. Olufemi, D.A. Fadare, B. Olorode, J. Adeyeye, S.Z. Sore, R. Atser, G. Atser, L. Sanni, B. Popoola, A. Shaibu, F. Nwilene, A. Akande
    World Development Perspectives, 2026
    • Access to credit increases participation in cassava seed entrepreneurship. • Adoption of improved cassava varieties raises cassava seed entrepreneurship participation likelihood. • Digital tools and extension services significantly support market entry. • Joint credit–technology support yields the largest gains for women and youth. • Constraints vary by productivity regime; conflict exposure shows resilience effects. Cassava seed entrepreneurship is critical for strengthening seed systems and advancing agricultural transformation in Nigeria. This study examines the determinants of smallholder participation in cassava seed entrepreneurship and simulates the effects of targeted policy interventions using survey data from 993 cassava farmers in Benue State. The analysis applies a binary logit framework with counterfactual scenario simulations and production-regime, specific estimations to account for heterogeneity between low- and high-productivity environments, alongside additional robustness checks. The results show that access to credit (dy/dx = 13.2%, p < 0.01), adoption of improved cassava varieties (dy/dx = 14.3%, p < 0.01), use of an area-calculation mobile application (dy/dx = 7.1%, p < 0.05), and access to extension services (dy/dx = 5.2%, p < 0.05) significantly increase the likelihood of participation in cassava seed entrepreneurship. Gender-disaggregated analysis indicates that male farmers have a modest but meaningful advantage (β = 0.92, dy/dx = 5.8%), reflecting differential access to productive resources and institutional support. The production-regime analysis reveals important structural differences in participation drivers. In low-productivity environments, participation is primarily constrained by financial capital, with credit access emerging as the dominant determinant. In contrast, in high-productivity environments, participation is more strongly influenced by technological complementarities, particularly adoption of improved varieties, digital decision-support tools, and extension services that enhance productivity and market coordination. These findings highlight that entrepreneurial engagement is context-dependent rather than uniform across farming systems. Policy simulations further indicate that the joint provision of credit and improved varieties could increase participation probabilities by 36.1 percentage points for men, 32.0 percentage points for youth (≤35 years), and 25.8 percentage points for women, demonstrating substantial untapped entrepreneurial potential among women and youth if structural barriers are relaxed. As part of the robustness analysis, conflict exposure, used as a proxy for local political instability, shows a positive and statistically significant association with participation, suggesting that farmers in conflict-affected environments may adopt cassava seed entrepreneurship as a resilience or income-diversification strategy. Consistency across alternative specifications confirms that institutional access, technological adoption, and productive capacity remain more decisive for participation than most demographic characteristics. Overall, the study underscores the need for gender- and youth-responsive policies that integrate financial inclusion, technological support, institutional strengthening, context-sensitive interventions as well as attention to productivity regimes and local security conditions, to promote inclusive and resilient cassava seed systems in Nigeria.
  • Sustainability of Artisanal Fishing in Nigeria: Implications for Food Security
    Journal of Advocacy Research and Education, 2025
    The growing demand for artisanal fish as a source of protein is overstretching the fishcatching sector, threatening its sustainability.This study examines the food security implications of the nexus between artisanal fishery catch and sustainable fishing in Osun State, Nigeria.With a structured questionnaire, primary data were collected from 150 artisanal fishers in Osun State and analysed using Seemingly Unrelated and binary logistic regressions.The results reveal that catfish and tilapia are the most harvested fish species by artisanal fishers, who are more food-secure.Fishing experience and gender significantly influence sustainability indicators, while food security is influenced by social, environmental, and catfish harvesting.Artisanal fishers should improve their sustainability efforts to ensure food security.The Federal Ministry of Agriculture, through its Department of Fisheries and Aquaculture, should educate and encourage artisanal fishers to diversify their fishing activities to address the negative environmental impacts of continuous fishing and to improve their economic well-being.
  • Farmers’ willingness to adopt digital application tools in Ogun State, Nigeria
    Daniel Oyewale Abioye, Olufemi Popoola, Adebowale Akande, David Abimbola Fadare, Siyanbola Adewumi Omitoyin, Babatunde Yinusa, Olayinka Oladayo Kolade
    Journal of Strategy and Management, 2024
    PurposeThe agricultural sector has experienced a transformative impact through the adoption of digital technologies, particularly mobile applications designed for farmers. This study investigates the factors influencing smallholder farmers' willingness to adopt digital application tools in Ogun State, Nigeria, focusing on the IITA herbicide calculator and Akilimo mobile applications.Design/methodology/approachData were gathered from 572 smallholder farmers participating in the Zero Hunger project. This research contributes to the limited empirical evidence in Nigeria concerning farmers' willingness to adopt digital application tools. The study analyzes the effects of education, training, access to internet services, smartphone ownership, willingness to use paid applications, awareness of application tools and the cost of digital tools on farmers' willingness to adopt. Gender differentials in willingness to adopt were also explored.FindingsThe results indicate positive and statistically significant effects of education, training, internet access, smartphone ownership, willingness to use paid applications, awareness of application tools and the cost of digital tools on farmers' willingness to adopt. However, female farmers exhibited a lower willingness to adopt digital application tools.Practical implicationsPolicymakers are urged to create supportive policies promoting basic formal education and provide effective extension services to enhance farmers' training. Additionally, efforts should be made to reduce the cost of digital applications and improve internet accessibility in rural areas. Encouraging female farmers to adopt advanced agricultural technologies is essential. Stakeholders are advised to raise awareness of digital application tools to expedite the adoption of agricultural technologies in the country.Social implicationsThis study will be helpful for the government to determine the state’s readiness for digital agriculture, it will help technology developers and agricultural technology startups to understand the factors determining farmers willingness to adopt digital application tools.Originality/valueThis study offers insights into the readiness of Ogun State, Nigeria, for digital agriculture. It provides valuable information for technology developers and agricultural startups to understand the determinants of farmers' willingness to adopt digital application tools, contributing to the advancement of the agricultural technology landscape.
  • Length-weight relationship and condition factor revealed possibility of mix strains in Clarias gariepinus population of Oueme Valley, Benin Republic (West Africa)
    O.O. Oyebola, S.B. Omitoyin, A.O.O. Hounhoedo, H. Agadjihouèdé
    Total Environment Research Themes, 2022
    Growth pattern (Length-Weight Relationship-LWR), condition factor(K) and phylogenetic linkage of sourced Clarias gariepinus from Oueme valley(main catfish brooder source in Benin) was investigated to understand possible sources of diversity in growth pattern in spawned C. gariepinus. Mean length-ML cohorts(1:1 sex ratio) of 30 randomly selected C. gariepinus ‘labelled’ brooders from sellers in each of Adjohoun(wild-habitat); Dangbo(culture-habitat) and Porto-Novo(culture-habitat) were characterized for differences(p < 0.05) in Mean Weight-MW(g), condition factor(K) and growth behavior(LWR intercept-a; slope-b) in sexes and unsexed populations. 16S-barcode gene sequences of 10 random tissue subsamples from the populations were analyzed for genetic linkages using Maximum Likelihood Method. ML ranged 34.26 ± 2.17 cm-35.54 ± 2.07 cm. MW was similar across Dangbo(326.18 ± 51.64) and Adjohoun(364.57 ± 64.48), significantly highest in Porto-novo(410.42 ± 54.67). K (0.72 ± 0.03-Dangbo − 1.02 ± 0.09-Porto-novo) differ across populations; ML and MW similar across Adjohoun sexes; different (male > female) across Dangbo and Porto-Novo. Sexes similar in K in Portonovo and Adjohoun but differ in Dangbo. At p = 0.00, r2 ranged 0.81–0.94, ‘a’ 0.45(Porto-Novo) to 1.09(Adjohoun), ‘b’ 0.18(Adjohoun) to 0.42(Porto-Novo) in unsexed population. Male and females ‘a’ were 1.01:1.16(Adjohoun), 0.77:0.85(Dangbo), −0.41:0.86(Porto-Novo); ‘b’ 0.21:0.15(Adjohoun), 0.31:0.28(Dangbo) and 0.75:0.26(Porto-Novo) at p = 0.00, r2 range 0.72–0.90. 80 %Porto-novo were closest to Clarias batrachus; 20 % closest to C. gariepinus × C. batrachus-crossbred; 70 %Dangbo closest to C. gariepinus × C. batrachus-crossbred, 10 % closest to Clarias batrachus. 20 % closest to C. gariepinus. 90 %Adjohoun was closest to C. gariepinus × C. batrachus-crossbred, 10 % closest to C. gariepinus. The populations diverged in weight, condition factor and sexual dimorphism, and demonstrated negative allometry irrespective of sexes to implicate sub-optimum robustness. Each contained mixed strains of Catfish species mistaken as C. gariepinus whose growth could be influenced by growth attributes of dominant strain. Dominance of C. batrachus × C. gariepinus-crossbreds’ in culture-Dangbo and Wild-Adjohoun signals possible introgression of invasive C. batrachus gene, indicating dire need for stricter management and conservation of local catfish gene pool for posterity.
  • Awareness and constraints of aquaculture biosecurity among fish farmers in Ekiti State, Nigeria
    Siyanbola A. Omitoyin, Kemisola D. Osakuade
    Aquaculture Studies, 2021
    The study investigated the level of awareness and constraints the farmers were facing in adopting effective biosecurity measures in Ekiti State. Primary data were collected using multi-stage sampling technique to randomly select 150 fish growers, out of which 144 questionnaires were recovered. Analysis was carried out using descriptive statistics, four-point Likert scale and multiple regression. The result showed that 76.4% of the fish farmers with mean age of 40.48±10.28years were married, 61.1% owned the land on which they farm their fish, 73.6% operated as small scale fish farmers with farm size of &lt;1 hectare. About 91.0% knew about fish diseases, the main source of pollution on the farm was flooding while some (61.1%) experienced outbreak of fish diseases at juvenile stage. High cost of facilities, lack of financial assistance, poor knowledge on biosecurity, expensive laboratory charges and inadequate monitoring by extension agents was perceived as the major constraints. The farmers need financial help to get adequate facilities and to enlarge their scale of operation. Adequate extension services to enlighten them on the effective biosecurity measures should be adopted.
  • Growth, gut morphology and microflora of african catfish clarias gariepinus fed mushroom (pleurotus pulmonarius) stalk meal supplemented diets
    Oluwakemi Abimbola Adejonwo, Bamidele Oluwarotimi Omitoyin, Emmanuel Kolawole Ajani, Olugbenga Adeniran Ogunwole, Siyanbola Adewumi Omitoyin
    Ribarstvo Croatian Journal of Fisheries, 2020
    Effects of dietary supplementation of Pleurotus pulmonarius stalk meal on growth, gut microflora and intestinal morphology of Clarias gariepinus were assessed in this study. The stalk meal was incorporated at 0.0 g/100 g (Control), 2.5 g/100 g (PSM 2), 5.0 g/100 g (PSM 3), 7.5 g/100 g (PSM 4) and 10.0 g/100 g (PSM 5). Clarias gariepinus (n=375), with an initial weight of 10.84±0.04 g, were allotted at 25 fish/60 litres of water in a completely randomised design for each diet treatment in triplicate. Feeding trial was conducted for eight weeks. Weight gain, specific growth rate, survival rate, feed intake and feed conversion ratio were not significantly different across all diet treatments. However, the production performance index of the fish and protein efficiency ratio were higher in fish fed PSM 3 diet than other treatments. Total viable bacteria count in the gut ranged from 7.56 (PSM 2) to 8.34 log10 cfu/g (PSM 4), while lactic acid bacteria count was between 5.00 (control) and 7.03 log10 cfu/g (PSM 3). Escherichia coli were identified in the gut of the control group but were not detected in those fed supplemented diets. More colonies of Salmonella and Vibrio species were observed in the control but fewer colonies in the diets supplemented groups. The proximal, middle and distal villus length, proximal, middle and distal cryptal depth, proximal and distal absorption area of fish fed supplemented diet were higher than those of the control. Conversely, proximal, middle and distal villus width and middle absorption area were not significantly different. In spite of observable favourable gut microflora and gut histomorphology of fish fed supplemental P. pulmonarius stalk meal diet, these attributes did not manifest in growth performance indices.

RECENT SCHOLAR PUBLICATIONS

  • Role of credit access, improved varieties, and gender dynamics in commercialization of cassava seeds in Nigeria.
    A Abioye, D.O., Yamig, M., Fillipie, V., Omitoyin, S., Ogunniyie, A. I ...
    World Development Perspectives 42, 1-16 , 2026
    2026
  • Designing gender-inclusive data systems in small-scale fisheries (sept, 10.1007/s13280-025-02250-5, 2025)
    SJ Harper, M Williams, D Kleiber, M Axelrod, S Mangubhai, E Torell, ...
    AMBIO 55 (2), 260-262 , 2026
    2026
  • Designing gender-inclusive data systems in small-scale fisheries
    SJ Harper, M Williams, D Kleiber, M Axelrod, S Mangubhai, E Torell, ...
    Ambio 55 (2), 245-259 , 2026
    2026
    Citations: 8
  • World Development Perspectives
    DO Abioye, M Yami, V Fillipi, S Omitoyin, AI Ogunniyi, AP Olufemi, ...
    World Development 42 (10078), 100789 , 2026
    2026
  • Adoption impact and heterogeneity of mobile agricultural advisory technologies among smallholder farmers in Nigeria
    DO Abioye, DA Fadare, S Omitoyin, AI Ogunniyi, P Olinya, A Shaibu, ...
    Discover Agriculture 3 (1), 251 , 2025
    2025
    Citations: 3
  • Do Mobile Agricultural Technologies Improve Crop Productivity? Evidence from Smallholder Farmers in Nigeria
    DA Fadare, S Omitoyin, P Olinya, A Shaibu, F Nwilene, A Akande
    2025
  • Lean Management Technique for Increased Culture Fisheries at Eriwe Cluster Cooperative Fish Farm Estate, Ijebu-Ode, Nigeria
    R Sule, S. O,. Oyebola,.O.O,. Olaifa, F. E. , Omitoyin, S. A., Oduntan, O. B ...
    Our Connection to Life: Multiple lenses on Nigeria’s small-scale Fisheries … , 2025
    2025
  • Gender Issues and Challenges of Inland Artisanal Fisheries in Nigeria in Akintola, S. L., & Fakoya, K. A. (Eds.).Our Connection to Life: Multiple lenses on Nigeria’s small-scale
    Omitoyin, S. A., Shakiru, S.O., Oduntan
    TBTI Global Publication Series. St. John’s, Canada, 330 - 349 , 2025
    2025
  • Understanding gender issues in Nigerian Fisheries and Aquaculture Sector: Peremptory for Sustainable Fisheries and Aquaculture development
    SA Omitoyin
    2025
  • Analysis of Gender Roles, Status and Needs Among Fishers in Epe Fishing Community, Lagos State
    SA Omitoyin, OS Okunlola
    RENEWABLE NATURAL RESOURCES MANAGEMENT AND USE: A PATH TO SUSTAINABLE … , 2025
    2025
  • Farmers’ willingness to adopt digital application tools in Ogun State, Nigeria
    DO Abioye, O Popoola, A Akande, DA Fadare, SA Omitoyin, B Yinusa, ...
    Journal of Strategy and Management , 2024
    2024
    Citations: 19
  • Effect of graded levels of Moringa oleifera leaf meal on growth, haematology and serum biochemistry of African catfish Clarias Gariepinus juveniles.
    SA Omitoyin, O Orisasona, EK Ajani, BO Omitoyin
    Aceh Journal of Animal Science 8 (3) , 2023
    2023
    Citations: 6
  • Profiling women’s reality of risk and vulnerabilities in the Nigerian cassava agri-food system
    TA Adeyemo, O Nwanze-Olaosebikan, SA Omitoyin
    University of Ibadan , 2023
    2023
  • Length-weight relationship and condition factor revealed possibility of mix strains in Clarias gariepinus population of Oueme Valley, Benin Republic (West Africa)
    OO Oyebola, SB Omitoyin, AOO Hounhoedo, H Agadjihouèdé
    Total Environment Research Themes 3, 100009 , 2022
    2022
    Citations: 15
  • Pineapple pomace as replacement for wheat bran in extruded diet for Catfish Clarias gariepinus.
    OB Oduntan, SA Omitoyin, SO Sule
    Aceh Journal of Animal Science 7 (2) , 2022
    2022
    Citations: 1
  • Technology Adoption by Small Holder Fish Farmers in Oyo State, Nigeria
    SA Omitoyin, AA Adediran
    Journal of Marine Science Research and Oceanography 5 (1), 41-54 , 2022
    2022
    Citations: 6
  • Chemical characterisation and in vitro assessment of two mushroom stalks as prebiotics for Clarias gariepinus (Burchell, 1822)
    OA Adejonwo, BO Omitoyin, OA Ogunwole, EK Ajani, SA Omitoyin
    Agricultura Tropica et Subtropica 54 , 2021
    2021
    Citations: 4
  • Assessment of Livelihood Vulnerability of Fisherfolks in Coastal and Freshwater Fishing Communities of Ilaje in Ondo State
    SA Omitoyin, AP Ogungbure, KD Osakuade
    Asian Journal of Fisheries and Aquatic Research 11 (2), 1-14 , 2021
    2021
    Citations: 9
  • Sustainable forestry and fisheries resources management in the context of Coronavirus pandemic in Africa
    IO Azeez, SA Omitoyin
    African Journal of Sustainable Development 11 (1), 53-72 , 2021
    2021
  • Adoption of Biosecurity Measures for Sustainable Aquaculture Production in Ekiti State, Nigeria
    S Omitoyin, Osakuade, K.
    RENEWABLE 1 (1), 74-87 , 2021
    2021

MOST CITED SCHOLAR PUBLICATIONS

  • Socio-economic determinants of consumption pattern of fish among households in Ibadan North Local Government Area of Oyo State, Nigeria
    OR Adeniyi, SA Omitoyin, OO Ojo
    Rural Outreach Program , 2012
    2012.0
    Citations: 48
  • Potential impacts of climate change on livelihood and food security of Artisanal Fisherfolks in Lagos State, Nigeria
    SA Omitoyin, FB Tosan
    Journal of Agricultural Science 4 (9), 20 , 2012
    2012.0
    Citations: 34
  • Farmers’ willingness to adopt digital application tools in Ogun State, Nigeria
    DO Abioye, O Popoola, A Akande, DA Fadare, SA Omitoyin, B Yinusa, ...
    Journal of Strategy and Management , 2024
    2024.0
    Citations: 19
  • Length-weight relationship and condition factor revealed possibility of mix strains in Clarias gariepinus population of Oueme Valley, Benin Republic (West Africa)
    OO Oyebola, SB Omitoyin, AOO Hounhoedo, H Agadjihouèdé
    Total Environment Research Themes 3, 100009 , 2022
    2022.0
    Citations: 15
  • Growth, gut morphology and microflora of African catfish Clarias gariepinus fed mushroom (Pleurotus pulmonarius) stalk meal supplemented diets
    OA Adejonwo, BO Omitoyin, EK Ajani, OA Ogunwole, SA Omitoyin
    Croatian Journal of Fisheries 78 (2), 79-90 , 2020
    2020.0
    Citations: 15
  • Profitability of Aquacultural practices: empirical experience from fish farmers in Epe Local Government Area of Lagos State
    OR Adeniyi, SA Omitoyin, HI Aderibigbe
    Nigerian Journal of Fisheries 7 (1), 117-125 , 2010
    2010.0
    Citations: 12
  • Awareness and Constraints of Aquaculture Biosecurity Among Fish Farmers in Ekiti State, Nigeria
    SA Omitoyin, KD Osakuade
    Aquaculture Studies 21 (2), 83-92 , 0
    Citations: 11
  • Assessment of Livelihood Vulnerability of Fisherfolks in Coastal and Freshwater Fishing Communities of Ilaje in Ondo State
    SA Omitoyin, AP Ogungbure, KD Osakuade
    Asian Journal of Fisheries and Aquatic Research 11 (2), 1-14 , 2021
    2021.0
    Citations: 9
  • Designing gender-inclusive data systems in small-scale fisheries
    SJ Harper, M Williams, D Kleiber, M Axelrod, S Mangubhai, E Torell, ...
    Ambio 55 (2), 245-259 , 2026
    2026.0
    Citations: 8
  • GENDER PARTICIPATION IN AQUACULTURE IN LAGOS STATE, NIGERIA
    Omitoyin, Siyanbola A., Fawehinmi, Olabisi A., Pomary, Ambrose B.
    IBADAN JOURNAL OF GENDER STUDIES, 22-33 , 2020
    2020.0
    Citations: 7
  • Sources and uses of microcredit in poverty alleviation among fish farmers in Osun State, Nigeria
    SA Omitoyin, OH Sanda
    Journal of Fisheries and Aquatic Science 8 (1), 154 , 2013
    2013.0
    Citations: 7
  • Towards Boosting Aquaculture Production: An Identification of Key Determinants of Catfish (Clarias gariepinus) Consumption in Ibadan Metropolis of Oyo State, Nigeria
    A Kehinde, S Omitoyin, OP Agbola, DO Awotide, O Oke
    Proceedings of conference on International Research on Food Security … , 2009
    2009.0
    Citations: 7
  • Effect of graded levels of Moringa oleifera leaf meal on growth, haematology and serum biochemistry of African catfish Clarias Gariepinus juveniles.
    SA Omitoyin, O Orisasona, EK Ajani, BO Omitoyin
    Aceh Journal of Animal Science 8 (3) , 2023
    2023.0
    Citations: 6
  • Technology Adoption by Small Holder Fish Farmers in Oyo State, Nigeria
    SA Omitoyin, AA Adediran
    Journal of Marine Science Research and Oceanography 5 (1), 41-54 , 2022
    2022.0
    Citations: 6
  • Effect of Micro-Credit on Sustainable Livelihood of Artisanal Fisherfolks in Lagos Lagoon Nigeria
    SA Omitoyin, BT Fregene
    African Journal of Livestock Extension 7, 70-76 , 2009
    2009.0
    Citations: 6
  • Sources and impact of micro-credit on the productivity of artisanal fisherfolks in Lagos lagoon
    SA Omitoyin, BT Fregene
    Fisheries Society of Nigeria , 2008
    2008.0
    Citations: 6
  • Socioeconomic Particularity and Constraints of Artisanal Fisherfolks in selected fishing communities along Kainji Dam, New Bussa, Niger State.
    Omitoyin, S. A. and Aderanti, O. R.
    Nigerian Journal of Fisheries 17 (2), 2060 -2069 , 2020
    2020.0
    Citations: 5
  • Chemical characterisation and in vitro assessment of two mushroom stalks as prebiotics for Clarias gariepinus (Burchell, 1822)
    OA Adejonwo, BO Omitoyin, OA Ogunwole, EK Ajani, SA Omitoyin
    Agricultura Tropica et Subtropica 54 , 2021
    2021.0
    Citations: 4
  • Technical Efficiency of Fish Production in Earthen Ponds in Osun State, Nigeria
    SA Omitoyin, OA Fawehinmi
    Ibadan Journal of Agricultural Research 12 (2), 3-3 , 2016
    2016.0
    Citations: 4
  • Adoption impact and heterogeneity of mobile agricultural advisory technologies among smallholder farmers in Nigeria
    DO Abioye, DA Fadare, S Omitoyin, AI Ogunniyi, P Olinya, A Shaibu, ...
    Discover Agriculture 3 (1), 251 , 2025
    2025.0
    Citations: 3