Abajue MC (2023). Environmental Sustainability: Relevance of Forensic Insects and Other Ecosystem Services in Africa. In: Izah, S.C., Ogwu, M.C. (eds) Sustainable Utilization and Conservation of Africa's Biological Resources and Environment pp. 603-634, Springer, Singapore.
Crossref

Adamou M, Kingha TBM, Yatahaï CM (2020). The role of carpenter bee (Xylocopa olivacea) pollination on fruit and seed yields of Lipstick tree (Bixa orellana, Bixaceae) crop in Cameroon. International Journal of Agricultural Policy and Research 8(1):26-34.

Asiwe JAN (2009). Insect mediated outcrossing and geneflow in cowpea (Vigna unguiculata (L.) Walp): Implication for seed production and provision of containment structures for genetically transformed cowpea. African Journal of Biotechnology 8(2):226-230.

Blackhurst HT, Miller JC (1980). Cowpea, In: Fehr W.R. & Hadley H.H. (eds.): Hybridization of Crop Plants. American Society of Agronomy - Crop Science Society of America. Madison, Wisconsin pp. 327-337.
Crossref

Buchmann SL, Nabhan GP (1996). The Forgotten Pollinators. Washington, D.C. Shearwater Books, Island Press: Covelo, California, USA 292 p.

Davis DW, Oelke EA, Oplinger ES, Doll JD, Hanson CV, Putnam DH (1991). Field Crops Manual. In: Bressani R, editor. Cowpea Research, Production and Utilization. John Wiley and Sons, UK.

Deli KP, Adamou M, Fameni ST, Faïbawa E and Tchuenguem FF-N (2020). Impact of a single flower visit of Xylocopa olivacea (Hymenoptera: Apidae) on Phaseolus vulgaris Bigarre variety (Fabaceae) pod and seed production at Dang (Ngaoundéré, Cameroon). International Journal of Entomology Research 5(4):85-93.

Diguir BB, Pando JB, Fameni TS, Tchuenguem FF-N (2020). Pollination efficiency of Dactylurina Staudinger (Hymenoptera: Apidae) on Vernonia amygdalina (Asteraceae) florets at Dang (Ngaoundéré, Cameroon). International Journal of Research Studies in Agricultural Sciences 6(2):22-31.
Crossref

Djonwangwé D, Pando JB, Kameni BAS, Mbonomo BMA, Tchuenguem FF-N, Messi J (2017). Impact des activités de butinage de Xylocopa inconstans Smith F. 1874 (Hymenoptera : Apidae) et Megachile eurymera Smith 1864 (Hymenoptera : Megachilidae) sur la pollinisation et les rendements fruitier et grainier de Vigna unguiculata (L.) Walp. 1843 (Fabaceae) à Maroua, Extrême - Nord, Cameroun. Afrique Science 13(5):1-17.

Donfack P (1998). Fallow vegetation in Northern - Cameroon: Typology, Diversity, Dynamic, Production. Postgraduate Doctorate Thesis, University of Yaoundé I, Cameroon 118 p.

Eeraerts M (2023). A minimum of 15% semi-natural habitat facilitates adequate wild pollinator visitation to a pollinator-dependent crop. Biological Conservation 278:109887.
Crossref

Elisante F, Ndakidemi P, Arnold SEJ, Belmain SR, Gurr GM, Darbyshire I, Xie G, Stevenson PC (2020). Insect pollination is important in a smallholder bean farming system. PeerJ 8:e10102, 23 p.
Crossref

Enyiukwu DN, Amadioha AC, Ononuju CC (2018). Biochemical composition, potential food and feed values of aerial parts of cowpea (Vigna unguiculata (L.) Walp.). Greener Trends in Food Science and Nutrition 1:11-8.
Crossref

Feketéné FA, Szucs I, Bauerné GA (2023). Evaluation of the Pollination Ecosystem Service of the Honey Bee (Apis mellifera) Based on a Beekeeping Model in Hungary. Sustainability 15(13):9906.
Crossref

Hieng IO (2009). Etude des paramètres géotechniques des sols du Cameroun. Clé (Eds), Yaoundé-Cameroun 147 p.

Hordzi WHK (2011). Insects observed on cowpea flowers in three Districts in Central Region of Ghana. African Journal of Food, Agriculture, Nutrition and Development 11(3):4880-4895.
Crossref

Hordzi WHK (2014). Knowledge of the Roles of Cowpea Insect Flower Visitors and Effects of Pesticide Control Measures on them by Farmers in Three Districts in the Central Region of Ghana. International Journal of Research Studies in Biosciences 2(5):38-50.

Imam W, Eming S, Darsono D (2017). Diversity of Wild Bees along Elevational Gradient in an Agricultural Area in Central Java, Indonesia. Hindawi Psyche (9):1-5.
Crossref

Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) (2016). The assessment report of the Intergovernmental Science Policy Platform on Biodiversity and Ecosystem Services on Pollinators, Pollination and Food Production. S.G. Potts, V. L. Imperatriz Fonseca, and H. T. Ngo (eds). Secretariat of the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services, Bonn, Germany 552 p.

Jacob-Remacle A (1989). Foraging behavior of domestic and wild bees within the apple ochards in Belgium. Apidologie 20(4):271-285.
Crossref

Kengni BS, Ngakou A, Tchuenguem FFN (2015). Pollination and yield attributes of (cowpea) Vigna unguiculata L. Walp. (Fabaceae) as influenced by the foraging activity of Xylocopa olivacea Fabricius (Hymenoptera: Apidae) and inoculation with Rhizobium in Ngaoundere, Cameroon. International Journal of Agronomy and Agricultural Research 6(2):62-76.

Kingha TBM, Tchuenguem FF-N, Ngakou A, Brückner D ((2012). Foraging and pollination activities of Xylocopa olivacea (Hymenoptera, Apidae) on Phaseolus vulgaris (Fabaceae) flowers at Dang (Ngaoundere - Cameroon). Journal of Agricultural Extension and Rural Development 4(6):330-339.

Klein AM, Freitas BM, Bomfim IGA, Boreux V, Fornoff F, Oliveira MO (2020). Insect Pollination of Crops in Brazil, A Guide for Farmers, Gardeners, Politicians and Conservationists. Albert-Ludwigs University Freiburg, Nature Conservation and Landscape Ecology 162 p.

Mackie WW, Smith FL (1935). Evidence of field hybridization in beans. American Society of Agronomy Journal 27:903-909.
Crossref

Ministère de l'Economie, de la Planification et de l'Aménagement du Territoire (MINEPAT) (2014). Rapport sur le développement économique du Cameroun (RADEC). Région du Nord 180 p.

Mohammadou M, Adamou M, Taimanga DK, Kenne M (2023). Seed yield improvement in Vigna unguiculata (L) (Fabaceae): Efficiency of pollinator and impact of aqueous leaf extract of three plant species in North Cameroon. Asia Journal Research in Crop Science 8(3):146-172.
Crossref

Ndayikeza L (2014). Abondance et distribution des abeilles du genre Xylocopa Latreille, 1802 (Hymenoptera: Apoidea) du Burundi. Bulletin Scientifique de l'Institut National pour l'Environnement et la Conservation de la Nature 11:38-48.

Organization for Economic Co-operation and Development (OECD) (2016). Cowpea (Vigna unguiculata), in Safety Assessment of Transgenic Organisms in the Environment, Harmonisation of Regulatory Oversight in Biotechnology, Volume 6: OECD Consensus Documents, OECD Publishing, Paris 330 p.

Pamminger T, Becker R, Himmelreich S, Schneider CW, Bergtold M (2019). The Nectar Report: Quantitative Review of Nectar Sugar Concentrations Offered by Bee Visited Flowers in Agricultural and Non-Agricultural Landscapes. Peer J 7:63-29.
Crossref

Pando JB, Tchuenguem FFN, Tamesse JL (2013). Activité de butinage et de pollinisation de Xylocopa olivacea Fabricius 1787 (Hymenoptera: Apidae) sur les fleurs de Vigna unguiculata (L.) Walp. 1843 (Fabaceae) à Yaoundé-Cameroun. Faunistic Entomology 66:47-59.

Pando JB, Tchuenguem FF-N, Djonwangwé D, Tamesse JL (2014). The importance of single floral visit of Chalicodoma cincta cincta Fabricius 1871 (Hymenoptera: Megachilidae) in the pollination and yield of Vigna unguiculata (L.) Walp. 1843 (Fabaceae) in Cameroon. International Journal of Agronomy and Agricultural Research 4(4):179-187.

Pharaon MA, Douka C, Dounia, Eloundou CE, Tchuenguem FF-N (2019). Pollination efficiency of Apis mellifera L. (Hymenoptera: Apidae) on flowers of Vigna unguiculata (L.) Walp. (Fabaceae) at Bilone (Obala, Cameroon). International Journal of Bioscience 14(1):1-11.
Crossref

Robinson SVJ, Cartar RV, Pernal SF, Waytes R, Hoover SE (2023). Bee visitation, pollination service, and crop yield in commodity and hybrid seed canola. Agriculture, Ecosystems and Environment 347:108396.
Crossref

Rollin O, Giovanni B, Stefano B, Decourtye A, Wratten SD, Canale A, Desneux N (2015). Weed-insect pollinator networks as bio indicators of ecological sustainability in agriculture. A review. Agronomy for Sustainable Development 36(1):1-22.
Crossref

Roy R, Schmitt AJ, Thomas JB, Carter CJ (2017). Review: nectar biology: from molecules to ecosystems. Plant Science 262:148-164.
Crossref

Tchuenguem FF-N, Messi J, Pauly A (2001). Activité de Meliponula erythra sur les fleurs de Dacryodes edulis et son impact sur la fructification. Fruits 56(3):179-188.
Crossref

Tchuenguem FF-N, Messi J, Brückner D, Bouba B, Mbofung G and Hentchoya HJ (2004). Foraging and pollination behaviour of the African honey bee (Apis mellifera adansonii) on Callistemon rigidus flowers at Ngaoundéré (Cameroon). Journal of the Cameroon Academy of Sciences 4:133-140.

Tchuenguem FF-N (2005). Activité de butinage et de pollinisation de Apis mellifera Adansonii Latreille (Hymenoptera: Apidae, Apinae) sur les fleurs de trois plantes à Ngaoundéré (Cameroun): Callistemon rigidus (Myrtaceae), Syzygium guineense var. macrocarpum (Myrtaceae) et Voacanga africana (Apocynaceae). Thèse de Doctorat d'Etat, Université de Yaoundé I, Yaoundé.

Tchuenguem FF-N, Ngakou A, Kengni BS (2009). Pollination and yield responses of cowpea (Vigna unguiculata L. Walp.) to the foraging activity of Apis mellifera adansonii (Hymenoptera: Apidae) at Ngaoundéré (Cameroon). African Journal of Biotechnology 8(9):1988-1996.