Cucurbita maxima (Cucurbitaceae) is an edible, medicinal and vitamin-rich species. In Cameroon, although this plant is among the edible crops, knowledge about the relationship between this crop and pollinators is scarce. This study aims to describe the floral biology of C. maxima and the relationship between this crop and A. mellifera for their optimal exploitation. Observations were carried out at two sites (Torok and Vogzom) during the 2022 agricultural season. The growth stages of flowers buds and their daily appearance rate were recorded. Four treatments were defined at each site to assess the effectiveness of bee visits on pollination and fruit yield. The number of male flowers exceeded that of female flowers, with a sex ratio of 5:1 (♂/♀). The impact of climate factors on bee visits, fruit mass and diameter, and the number of mature fruits from the different treatments was evaluated. High temperatures decreased bee visits, as did rainy days. Flower visits for nectar collection were more frequent than those for pollen. Bees effectively promoted the pollination of female flowers during their foraging trips. There is a correlation between the number of bee visits received by female flowers and the fruit set rate per treatment. The production of good-quality fruit and seeds from this plant depends on optimal bee pollination activity. It is to Maintain climatic factors at a level favorable to pollinator activity by combating climate change.
| Published in | Medicine and Life Sciences (Volume 2, Issue 1) |
| DOI | 10.11648/j.mls.20260201.13 |
| Page(s) | 23-36 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2026. Published by Science Publishing Group |
Floral Biology, Cucurbita maxima, Apis mellifera, Pollination, Pollinator Efficiency, Resilient Farming
| [1] | FAO, 2021. “Country Profile-Cameroon,” FAO-AQUASTAT Annual Report, Subregional Office for Subregional Office for Central Africa. 2021. |
| [2] | World Bank, 2022. Open Data, on World Bank Open Data(accessed May 31, 2023) |
| [3] | SDN30, 2020. National Development Strategy 2020-2030 (SND30) for structural transformation and inclusive development, 2020, 48-55. |
| [4] | NIS, 2024. National Institute of Statistics: results of the 5th Cameroonian Household Survey (ECAM5), 2024, 2 p. |
| [5] | De Silguy, C., 1997. Organic farming, effective and low-polluting techniques. Living Earth (ed.), Paris, 1997, 186 p. |
| [6] | Westphal, E., Embrechts, J., Zonen and Veenman, H., 1981. Autochthonous agriculture in Cameroon. Agricultural College Wageningen, 1981, 107-129. |
| [7] | Woodcock, TS, 2012. Pollination in the agricultural landscape: best management practices for crop pollination. Canadian Pollination Initiative, University of Guelph, 113p. |
| [8] | Mbogne, TJ, Youmbi, E., Ibouraïman, B. & Ntsomboh, NG, 2015. Agromorphological, Chemical and Biochemical Characterization of Pumpkin (Cucurbita maxima and Cucurbita moschata, Cucurbitaceae) Morphotypes Cultivated in Cameroon. Research in Plant Sciences, 3(1). 12-17. April 2015. |
| [9] | By-Gene, E., Lester, JL Jifon and Donald JM, 2010. Impact of Potassium Nutrition on Food Quality of Fruits and Vegetables: a Condensed and Concise Review of the Literature, 94 (1). 18-21. January 2010. |
| [10] | Rajasree, RS, Sibi, PI, Francis F. and William, H., 2016. Phytochemicals of Cucurbita ceae family - a review, International Journal of Pharmacognosy and Phytochemistry Research, 8(1). 113-123. December 2016. |
| [11] |
FAO, 2023.
www.fao.org/rankings/countries_by_commodty, [archive], on 2023. |
| [12] | Charlène, P. and Brejean, A., 2013. Fiche technico- économiques: Cultiver le Potimarron de plein champ en agriculture biologique. 8p. |
| [13] | FAO: Protecting pollinators. Department of Agriculture, Biosecurity, Nutrition and Consumer Protection. Vialle delle Terme di Caracalla, Rome. 21 p. |
| [14] | Willis-Chan, DS, Law, K. and Morandin, LA, 2022. Practices to protect pollinators from pesticides: Cucurbits, Pollinator Partnership Canada, 2022. 46p. |
| [15] | Gallai, N., Salles, JM, Settele, J. & Vaissière, BE, 2009. Economic evaluation of the vulnerability of world agriculture confronted with pollinator decline. Ecological Economics, 68: 810-821. |
| [16] | FAO, 2018. Importance of bees in biodiversity and their contribution to food and nutrition security (FAO). Brazaville, 3 p. |
| [17] | Mc-Gregor, SE (1976) Insect pollination of cultivated plants. Agric. Res. Serv. USDA, Agriculture. Handbook 496, New York, 411 p. |
| [18] | Cordova, S., 1990. Pollination of watermelon by honey bees. MS thesis, University of Delaware, Delaware, 61 p. |
| [19] | Free, JB, 1993. Insect pollination of crops. Academic Press, London, 152 p. |
| [20] | Stanghellini, MS, Ambrose, JT and Schultheis, JR, 2002. Diurnal activity, floral visitation and pollen deposition by honey bees and bumble bees on field-grown cucumber and watermelon. Journal of Apicultural Research, 41:27-34. |
| [21] | Njoroge, GN, Gemmill. B., Bussman, R., Newton, LE and Ngumi, VW, 2004. Pollination ecology of Citrullus lanatus at Yatta, Kenya. International Journal of Tropical Insect Sciences, 24: 73-77. |
| [22] | Monica, B., Raimund, T. and Stefan, D., 2024. Negative and sex-specific effects of drought on flower production, resources and pollinator visitation, but not on floral scent in monoecious Cucurbita pepo. New Phytologist 244: 1013-1023. |
| [23] | Kouonon, LC, Anne-Laure, J., Arsene, I., Zoro, B., Bertin, P., Jean-Pierre, B. and Djé Y., 2009. Reproductive biology of the andromonoecious Cucumis melo subsp. Agrestis (Cucurbita ceae). Annals of Botany, 104: 1129-1139. |
| [24] | Malzy, P., 1954. Some plants of North Cameroon and their uses. Journal of Tropical Agriculture and Applied Botany, 1(6): 148-179. May-June 1954. |
| [25] | Achu, BM, Fokou, E., Tchiegang, C., M Fotso, M. 2005. Nutritive value of some Cucurbita ceae oilseeds from different regions in Cameroon. Afr. J. Biotechnol., 4(11). 1329-1334. November 2005. |
| [26] | Fokou, E., Achu, MB and Tchouanguep, MF, 2004. Preliminary Nutritional Evaluation of Five Species of Egusi Seeds in Cameroon. Afr. J. Food Agriculture. Nutr. Develop. 4(1): 1-11. August 2004. |
| [27] | Tchuenguem, FFN, 2005. Foraging and pollination activity of Apis mellifera adansonii Latreille (Hymenoptera: Apidae, Apinae) on the flowers of three plants in Ngaoundere (Cameroon): Callistemon severe (Myrtaceae), Syzygium Guinean var. macrocarpum (Myrtaceae) and Voacanga African (Apocynaceae). Thesis Doctorate of State, University of Yaounde I, 103 p. |
| [28] | Djè, Y., Kuoonon, LC, Arsène, I., Zoro, B., Glawdys, Y., Gnamien, JP and Baudoin, 2006. Study of the botanical, agronomic characteristics and floral biology of African melon (Cucumis melo L. var. agrestis Naudin, (Cucurbitaceae). Biotechnol. Agron. Soc. Approximately. 10(2): 109 - 119. |
| [29] | Sanda, H., 2021. Study of the floricolous entomofauna and the pollinating activity of Apidae (Hymenoptera) on Cucurbita moschata (Cucurbitaceae) in Dang (Ngaoundere). Master, University of Ngaoundere, 66p. |
| [30] | Tchuenguem, FFN, Messi, J., Brückner, D., Bouba, B., Mbofung, G. and Hentchoya, HJ, 2004. Foraging and pollination behavior of the African honeybee (Apis mellifera adansonii) on Callistemon rigidus flowers at Ngaoundere (Cameroon). Journal of the Cameroon Academy Sciences, 4(2): 133-140. |
| [31] | Pando, JB, Djonwangwé, D., Moudelsia, BO, Tchuenguem, FFN and Tamesse, JL, 2020. Diversity of Abelmoschus floricultural insects esculentus (Malvaceae) and their impact on fruit and seed yields in Maroua, Cameroon. Journal of Animal & Plant Sciences, 43(1): 7350-7365. |
| [32] | Adamou, M., Mohamadou, M., Kengni, BS, Ndiklai, FC, Youssoufa, O., Yatahaï, CM, Mohammadou, M., Tchoubou, SA and Tchuenguem, FFN 2025. Contribution of Apis mellifera (Hymenoptera: Apidae) in the yields of Abelmoschus esculentus (L.) Moench (Malvaceae) in Bockle and Pitoa (North, Cameroon). Cameroon Journal of Biological and Biochemical Sciences, 33, 126-140. |
| [33] | Sanda, H., Angoni, H., Azo'o, E.M., Oumarou, H.Z., Abdouraman, Mbere, N., Tchopwe, M. A., Maralossou, B. 2025. Contribution of floral visit of Apis mellifera (Apidae) on the yield of Cucurbita maxima (Cucurbitaceae) in Torok and Vogzom in Cameroon (2025). Open Access Library Journal, 12: e14070 |
| [34] | Kengni, BS, Ngakou, A. and 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. |
| [35] | Gingrass, D., Gingrass, J. and Olivera, D., 1999. Visits of honeybees (Hymenoptera: Apidea) and their effects on Cucumber yields in the field. Journal of Economic Entomology, 92: 435-438. |
| [36] | Azo'o, EM, 2014. Diversity of anthophilous insects and impact of their activity on Cucumeropsis yields mannii Naud., Citrullus lanatus (Thunb) Mansf. (Cucurbitaceae) and Abelmoschus esculentus (L) Moench. (Malvaceae) in Cameroon. Doctoral thesis, University of Yaounde 1, 174 p. |
| [37] | Azo'o, EM, Tchuenguem, FFN & Messi, J., 2017. Biological diversity of the entomofauna associated with Citrullus lanatus (Cucurbitaceae) flowers and assessment of its impact on yields. Journal of Entomology and Zoology Studies, 5(5): 810-81. |
| [38] | Nepi, M. & Paccini, E., 1993. Pollination, pollen viability, and pistil receptivity in Curcurbita pepo. Annal of Botany, 72:527-536. |
| [39] | Odet, J., 1991. The melon. Paris: CTIFL. 293 p. |
| [40] | Fomekong, A., Messi J., Kekeunou, S. & Tamesse, JL, 2010. Development, morphology and reproduction of Coridius xanthopterus (Heteroptera: Dinidoridae), pest of Cucumeropsis mannii in Southern Cameroon. Entomologie Faunistique, 62(4): 153-163. |
| [41] | Azo'o, EM & Messi, J., 2012. Yield responses of Cucumeropsis mannii (Cucurbitaceae) to the presence or the absence of the insect foraging activity at Nkolbisson in Cameroon. Journal of Animal and Plant Sciences, 13(3): 1791-1799. |
| [42] | Canto-Aguilar, A. & Parra-Tabla, V., 2000. Importance of conserving alternative pollinators: assessing the pollination efficiency of the squash bee, Peponapis limitaris in Cucurbita moschata (Cucurbitaceae). Journal of Insect Conservation, 4: 203-210. |
| [43] | Asworth, L. & Galetto, L., 2001. Pollinators and reproductive success of the wild cucurbit Cucurbita maxima ssp. andreana (Cucurbitaceae). Plant Biology, 3: 398-404. |
| [44] | Suhail, A., Ul-Abdin, Z., Iqbal, M., Weseem, U., Shahid, R.N. and Ul -Haq, I., 2001. Insecticidal mortality and pollination role of Honey bee (Apis mellifera L.) on Cucumbers (Cucumis sativus L.) crops. International Journal of Agriculture and Biology, 4: 501-502. |
| [45] | Bomfim, I., Souza de Aragão, F. and Walters, S., 2016. Pollination in Cucurbitacea crops. In: Cucurbita ceae: history, nomenclature, taxonomy and reproductive growth, 181-200. |
| [46] | Petersen, JD, Reiners, S. & Nault, BA, 2013. Pollination Services Provided by Bees in Pumpkin Fields Supplemented with Either Apis mellifera or Bombus impatiens or Not Supplemented. PLoS ONE, 8(7): 69-81. |
| [47] | Djonwangwé, D., Tchuenguem, FFN, Messi, J. & Brückner, D., 2011. Foraging and pollination activities of Apis mellifera adansonii Latreille (Hymenoptera: Apidae) on Ximenia americana (Olacaceae) flowers at Ngaoundere (Cameroon). International Research Journal of Plant Sciences, 2(6): 170-178. |
| [48] | Potts, GS, Biesmeijer, JC, Kremen, C., Neumann, P. and Schweiger, O., 2010. Global pollinator declines: trends, impacts and drivers. Trends Ecol Evol., 25: 345-353. |
| [49] | Pierre, J. (1997) Do the domestic bee and bumblebees obtain their food optimally? Technical beekeeping bulletin, 24(1): 27-32. |
| [50] | Kamo, T, Nikkeshi, A., Tawaratsumida, T., Tanaka, Y., Nakamura, S. and Kishi, S., 2022. Pollination efficiency of bumblebee, honeybee, and hawkmoth in kabocha squash, Cucurbita maxima, production in Kagoshima, Japan. Appl Entomol Zool 57:119-129. |
| [51] | Klein, AM, Vaissière, BE, Cane, JH, Steffan-Dewenter, I., Cunningham, SA, Kremen, C. and Tscharntke, T., 2007. Importance of pollinators in changing landscapes for world crops. Proceedings of the Royal Society (B), 274: 303-313. |
| [52] | Dalmazzo, M., Zumoffen, L., Ghiglione, C., Roig- Alsina, A. and Chacoff, N., 2024. Diversity and biological traits of bees visiting flowers of Cucurbita maxima var. zapallito different between biodiversity-based and conventional management practices. About Monit Assess 196(6). |
| [53] | Córtez-Goméz, AM, González- Cháves, A., UrbinaCardona, N. and Garibaldi, LA, 2023. Functional traits in bees: the role of body size and hairs in the pollination of a Passiflora crop. Neotrop Entomol 52: 642-651. |
| [54] | Pablo, J. Ramello, Valentín, A., Lorena, A., Leopoldo and Mariano L., 2024. Bee size increases pollen deposition in Cucurbita maxima (Cucurbitaceae) crops Apidology 55: 23. March 2024. |
| [55] | Philippe, JM, 1991. Pollination by bees: placing colonies in flowering crops to increase crop yields. EDISUD (ed), Aix-en-Provence, 178 p. |
| [56] | Isutsa, D.K. and Mallowa, S.O., 2013. Increasing leaf harvest intensity enhances edible leaf vegetable yields and decreases mature fruit yields in multi-purpose pumpkin. Journal of Agricultural and Biological Science, 8: 610-615. |
APA Style
Sanda, H., Hyacinthe, A., Menkamla, A. T., Haman, Z. O., Benoit, M., et al. (2026). Knowledge of Floral Biology, the Variation of Climatic Factors and the Role of Pollinators Significantly Improve the Yield of Cucurbita maxima Cultivation in Cameroon. Medicine and Life Sciences, 2(1), 23-36. https://doi.org/10.11648/j.mls.20260201.13
ACS Style
Sanda, H.; Hyacinthe, A.; Menkamla, A. T.; Haman, Z. O.; Benoit, M., et al. Knowledge of Floral Biology, the Variation of Climatic Factors and the Role of Pollinators Significantly Improve the Yield of Cucurbita maxima Cultivation in Cameroon. Med. Life Sci. 2026, 2(1), 23-36. doi: 10.11648/j.mls.20260201.13
AMA Style
Sanda H, Hyacinthe A, Menkamla AT, Haman ZO, Benoit M, et al. Knowledge of Floral Biology, the Variation of Climatic Factors and the Role of Pollinators Significantly Improve the Yield of Cucurbita maxima Cultivation in Cameroon. Med Life Sci. 2026;2(1):23-36. doi: 10.11648/j.mls.20260201.13
@article{10.11648/j.mls.20260201.13,
author = {Hebri Sanda and Angoni Hyacinthe and Albert Tchopwe Menkamla and Zephirin Oumarou Haman and Maralossou Benoit and Tchobsala},
title = {Knowledge of Floral Biology, the Variation of Climatic Factors and the Role of Pollinators Significantly Improve the Yield of Cucurbita maxima Cultivation in Cameroon},
journal = {Medicine and Life Sciences},
volume = {2},
number = {1},
pages = {23-36},
doi = {10.11648/j.mls.20260201.13},
url = {https://doi.org/10.11648/j.mls.20260201.13},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.mls.20260201.13},
abstract = {Cucurbita maxima (Cucurbitaceae) is an edible, medicinal and vitamin-rich species. In Cameroon, although this plant is among the edible crops, knowledge about the relationship between this crop and pollinators is scarce. This study aims to describe the floral biology of C. maxima and the relationship between this crop and A. mellifera for their optimal exploitation. Observations were carried out at two sites (Torok and Vogzom) during the 2022 agricultural season. The growth stages of flowers buds and their daily appearance rate were recorded. Four treatments were defined at each site to assess the effectiveness of bee visits on pollination and fruit yield. The number of male flowers exceeded that of female flowers, with a sex ratio of 5:1 (♂/♀). The impact of climate factors on bee visits, fruit mass and diameter, and the number of mature fruits from the different treatments was evaluated. High temperatures decreased bee visits, as did rainy days. Flower visits for nectar collection were more frequent than those for pollen. Bees effectively promoted the pollination of female flowers during their foraging trips. There is a correlation between the number of bee visits received by female flowers and the fruit set rate per treatment. The production of good-quality fruit and seeds from this plant depends on optimal bee pollination activity. It is to Maintain climatic factors at a level favorable to pollinator activity by combating climate change.},
year = {2026}
}
TY - JOUR T1 - Knowledge of Floral Biology, the Variation of Climatic Factors and the Role of Pollinators Significantly Improve the Yield of Cucurbita maxima Cultivation in Cameroon AU - Hebri Sanda AU - Angoni Hyacinthe AU - Albert Tchopwe Menkamla AU - Zephirin Oumarou Haman AU - Maralossou Benoit AU - Tchobsala Y1 - 2026/02/09 PY - 2026 N1 - https://doi.org/10.11648/j.mls.20260201.13 DO - 10.11648/j.mls.20260201.13 T2 - Medicine and Life Sciences JF - Medicine and Life Sciences JO - Medicine and Life Sciences SP - 23 EP - 36 PB - Science Publishing Group UR - https://doi.org/10.11648/j.mls.20260201.13 AB - Cucurbita maxima (Cucurbitaceae) is an edible, medicinal and vitamin-rich species. In Cameroon, although this plant is among the edible crops, knowledge about the relationship between this crop and pollinators is scarce. This study aims to describe the floral biology of C. maxima and the relationship between this crop and A. mellifera for their optimal exploitation. Observations were carried out at two sites (Torok and Vogzom) during the 2022 agricultural season. The growth stages of flowers buds and their daily appearance rate were recorded. Four treatments were defined at each site to assess the effectiveness of bee visits on pollination and fruit yield. The number of male flowers exceeded that of female flowers, with a sex ratio of 5:1 (♂/♀). The impact of climate factors on bee visits, fruit mass and diameter, and the number of mature fruits from the different treatments was evaluated. High temperatures decreased bee visits, as did rainy days. Flower visits for nectar collection were more frequent than those for pollen. Bees effectively promoted the pollination of female flowers during their foraging trips. There is a correlation between the number of bee visits received by female flowers and the fruit set rate per treatment. The production of good-quality fruit and seeds from this plant depends on optimal bee pollination activity. It is to Maintain climatic factors at a level favorable to pollinator activity by combating climate change. VL - 2 IS - 1 ER -