Diversity of molluscs in the Bagoue region (Côte d’ivoire): Influence of seasons
Paper Details
Diversity of molluscs in the Bagoue region (Côte d’ivoire): Influence of seasons
Abstract
Côte d’Ivoire finds itself lacking in animal proteins despite the multiple efforts made to achieve food self-sufficiency for its population. Indeed, natural resources capable of guaranteeing food security are under pressure from humans (destruction of forests and wildlife and action of bush fires). Thus, our work was carried out in the Bagoué region in the north of Côte d’Ivoire. From January 2018 to December 2019 (2 years), we inventoried 7 species of mollusks divided into 5 families according to the two well-defined dry and rainy seasons. To carry out our work, the Bagoué region was divided into six zones. We demarcated quadrats of 200 m² in three villages chosen in each zone. To do this, we searched in the ground, the litter, on the leaves and tree trunks and then on the trees. The identification of molluscs was carried out using morphological criteria. Our study recorded 5089 ± 47.97 Achatina fulica (324 ± 9.13 in dry season and 4765 ± 38.84 in rainy season), 1794 ± 17.18 Laristes varicus (144 ± 1.02 in dry season and 1650 ± 15.97 in rainy season), 991 ± 22.45 Archachatina ventricosa (40 ± 2.2 in dry season and 951 ± 20.25 in rainy season), 968 ± 9.87 Limicolaria flammea (9 ± 0.99 in dry season and 959 ± 19.86 in rainy season), 444 ± 2.39 Gabbiella africana (432 ± 41.12 in dry season and 309 ± 38.21 in rainy season), 271 ± 1.44 Limacus flavus (12 ± 10.11 in dry season and 254 ± 23.28 in rainy season) and 187 ± 1.21 Mytilis edulis (36 ± 11.20 in dry season and 151 ± 21.02 in rainy season). At the end of our study, it appears that in the natural environment, the 7 species of molluscs collected vary according to the seasons. The populations of Bagoué, through their activities (bush fires, deforestation, slash-and-burn cultivation) have a considerable impact on the biotope. These activities could be a danger to the survival of molluscs. Thus, we suggest raising awareness among populations on environmental protection, strengthening measures for the protection and conservation of animal and plant species.
Abbott RT. 1989. Compendium of landshells. A colored guide to more than 2000 of the world’s terrestrial shells, 240 p.
Achard F, Eva HD, Stibig HJ, Mayaux P, Gallego J, Richards T, Malingreau JP. 2002. Determination of deforestation rates of the world’s humid tropical forests. Science 297, 999–1002.
Amani SC. 2018. Biodiversity, ecology of terrestrial Gastropod Molluscs and status of the collection of edible snails in the classified forest of Yapo (Ivory Coast). Doctoral thesis, Université Nangui Abrogoua (Abidjan, Côte d’Ivoire), 157 p.
Anonymous. 2014. Fifth national report on the biological diversity of Côte d’Ivoire. https://www.cbd.int/doc/world/ci-nr-05-fr. Accessed June 1, 2017.
Barnosky AD, Matzke N, Tomiya S, Wogan GOU, Swartz B, Quental TB, Marshall C, McGuire JL, Lindsey EL, Maguire KC, Mersey B, Ferrer EA. 2011. Has the Earth’s sixth mass extinction already arrived? Nature 471(7336), 51–57. https://doi.org/10.1038/nature09678.
Bequaert J. 1950. Studies on the Achatinidae, a group of African land snails. Bulletin of the Museum of Comparative Zoology at Harvard College 105, 1–216.
Binder E. 1963. Molluscs of the Mount Nimba Strict Nature Reserve. Memoirs of the French Institute of Black Africa 66, 13–31.
Binder E. 1976. The “Gymnarions” of West Africa: from Senegal to Togo (Mollusca Pulmonata). Revue Suisse de Zoologie 83, 705–721.
Brooks TM, Mittermeier RA, Mittermeier CG, da Fonseca GAB, Rylands AB, Konstant WR, Flick P, Pilgrim J, Oldfield A, Magin G, Hilton-Taylor C. 2002. Habitat loss and extinction in the hotspots of biodiversity. Conservation Biology 16, 909–923.
Bruggen ACV. 1969. Notes on the distribution of territorial molluscs in southern Africa. Malacologia 9, 256–258.
Bruggen ACV. 1995. Mollusc biodiversity: time for a new approach. In: Bruggen ACV, Wells SM, Kemperman TCM, eds. Biodiversity and conservation of molluscs. Leiden: Backhuys, 1–19.
Cameron RAD, Pokryszko BM. 2007. Estimating the species richness and composition of land mollusc communities: problems, consequences and practical advice. Journal of Conchology 38, 529–547.
Cardoso P, Erwin TL, Borges PAV, New TR. 2011. The seven impediments in invertebrate conservation and how to overcome them. Biological Conservation 144(11), 2647–2655. https://doi.org/10.1016/j.biocon.2011.07.024.
Codjia JTC, Noumonvi RGC. 2002. Technical Guide for Breeding African Giant Snails, SNV (Dutch Organization for Development), 52 p. Withdrawn on 9 March 2008 from http://www.bib.fsagx.ac.be/bedim/production/guide/pdf/2.pdf.
Daget J. 2003. Terrestrial and fluvial molluscs of Mount Nimba. In: Lamotte M, Roy R, eds. Le peuplement animal du mont Nimba (Guinée, Côte d’Ivoire, Liberia). Mémoires du Muséum national d’Histoire naturelle 190, 183–209.
Damerdji A. 2009. Composition and structure of the malacofauna in the extreme west of the Algerian coast. Afrique Science 5(3), 149–168.
Dyduch-Falniowska A, Tobis H. 1989. Spatial structure of a gastropod community in the litter of a beech forest of Dentario-Glandulosae fagetum in the Tatra Mountains. Folia Malacologica 1216(3), 53–72.
Forcart L. 1953. The Veronicellidae of Africa (Mollusca, Pulmonata). Annales du Musée Royal du Congo Belge 23, 119 p.
Gaillard JA. 1954. Note on the genus Curvella Chaper and its West African species. Journal de Conchyliologie 84, 56–69.
Jess MRJ. 1989. The interaction of the diet and substrate on the growth of Helix aspersa (Müller) var. maxima. In: Henderson I, ed. Slugs and Snails in World Agriculture. 1, 311–317.
Kayeye JLB, Kabale BN, Cishibanji PB, Mashimango JJB, Bajo JPB. 2014. A preliminary survey and distribution of land snails of Katana region, Southern Kivu, Democratic Republic of Congo. International Journal of Innovation and Scientific Research 9(2), 212–224.
Kerney MP, Cameron RAD. 2015. Snails and Slugs of Europe. Paris: Delachaux et Niestlé, 370 p.
Kohonen T. 1982. Self-organized formation of topologically correct feature maps. Biological Cybernetics 43, 59–69.
Kohonen T. 1995. Self-Organized Maps. Springer-Verlag, Series in Informatique Sciences 30, 362 p.
Kohonen T. 2001. Self-Organized Maps, 3rd edition. Springer-Verlag, Series in Informatique Sciences, 501 p.
Kouassi KD. 2008. Effects of diet and rearing substrate on the biological performance of Archachatina ventricosa and some aspects of the collection of giant snails from Ivory Coast. Single doctoral thesis, University of Abobo-Adjamé (Côte d’Ivoire), N°32, 125 p.
Lamotte M, Roy R. 2003. Inventory and originality of the animal population of the prairie altitude of Nimba. In: Lamotte M, Roy R, eds. The Animal Population of Mount Nimba (Guinea, Côte d’Ivoire, Liberia). Memoirs of the National Museum of Natural History 190, 51–105.
Lek S, Giraudel JL, Guegan JF. 2000. Neuronal networks: algorithms and architectures for ecologists and evolutionary ecologists. In: Lek S, Guegan JF, eds. Artificial Neuronal Networks: Application to Ecology and Evolution. Berlin: Springer-Verlag, 3–27.
Lydeard C, Cowie RH, Ponder WF, Bogan AE, Bouchet P, Clark SA, Cummings KS, Frest TJ, Gargominy O, Herbert DG, Hershler R, Perez KE, Roth B, Seddon M, Strong EE, Thompson FG. 2004. The global decline of nonmarine mollusks. BioScience 54(4), 321–330. https://doi.org/10.1641/0006-3568(2004)054[0321:TGD ONM]2.0.CO;2.
Mbétid-Bessane E. 2006. Analyse de la filière des escargots comestibles dans la région de l’équateur en République Centrafricaine. Tropicultura 24(2), 115–119.
Memel JD. 2009. Diversity, abundance, and spatial-temporal distribution of terrestrial snails in a national tropical rainforest: Banco National Park (Côte d’Ivoire). Unique thesis from the University of Abobo-Adjamé, 125p.
Meyer WM, Ostertag R, Cowie RH. 2013. Influence of terrestrial molluscs on litter decomposition and nutrient release in a Hawaiian rainforest. Biotropica 45(6), 719–727.
Michael S, Litay R, Robert A, Claire NW, Mark C. 2004. Relationship between macroinvertebrate fauna and environmental variables in small present range and conservation. Journal of Molluscan Studies 77, 248–254.
N’dri KJ. 2015. Diversity of terrestrial gastropod mollusks and growth of the snail Achatina fulica (Bowdich, 1720) in a natural environment (UNA site and forest). Master’s thesis, Nangui Abrogoua University, Abidjan (Côte d’Ivoire), 68p.
N’dri KJ. 2021. Diversity, spatial and temporal distribution of terrestrial gastropod molluscs from the National Floristic Center (CNF) of Abidjan; growth and reproduction of the snail Archachatina ventricosa (Gould, 1850) in a natural environment. Doctoral thesis, UFR of Natural Sciences, Nangui Abrogoua University, Abidjan, Côte d’Ivoire, option: Animal Biology and Ecology; specialty: terrestrial malacology, 189p.
Oke OC, Alohan FI. 2006. The land snail diversity in a square kilometer of tropical rainforest in Okomu National Park, Edo State, Nigeria. African Scientist 7(3), 135–142.
Oke OC, Chokor JU. 2009. The effect of land use on snail species richness and diversity in the tropical rainforest of southwestern Nigeria. African Scientist 10(2), 95–108.
Oke OC. 2013. Territorial mollusc species richness and diversity in Omo Forest Reserve, Ogun State, Nigeria. African Invertebrates 54(1), 93–104.
Otchoumou A. 1997. Study of three species of edible snails from humid hygrophilous forests of eastern Côte d’Ivoire Achatina achatina (Linnaeus), Achatina fulica (Bowdich) and Archachatina marginata (Swainson) variety ventricosa: reproduction and growth in the natural environment and in breeding. Postgraduate doctoral thesis, University of Cocody-Abidjan, 110p.
Patil JV, Ekhande AP, Padate G. 2012. A study of terrestrial molluscs with respect to their species richness, relative abundance, and density in Toranmal Reserve Forest, North Maharashtra, India. European Journal of Zoological Research 1(2), 26–30.
Peake J. 1978. Pulmonates Vol. 2A, 479–483.
Philippeau G. 1992. How to interpret the results of a principal component analysis? Stat-ITCF collection, 63 p.
Pimm SL, Jenkins CN, Abell R, Brooks TM, Gittleman JL, Joppa LN, Raven PH, Roberts CM, Sexton JO. 2014. The biodiversity of species and their rates of extinction, distribution, and protection. Science 344.
Régnier C, Achaz G, Lambert A, Cowie RH, Bouchet P, Fontaine B. 2015. Mass extinction in poorly known taxa. Proceedings of the National Academy of Sciences of the United States of America 112(25), 7761–7766. https://doi.org/10.1073/pnas.1502350112
Rowson B, Anderson R, Turner JA, Symondson WOC. 2014. The slugs of Britain and Ireland: undetected and undescribed species increase a well-studied, economically important fauna by more than 20%. PLoS ONE 9(4), e91907. https://doi.org/10.1371/journal.pone.0091907
Sawadogo BJ, Dianou D, Traoré SA. 2012. Carbon dioxide and methane emissions from Macrotermes bellicosus termite mounds in Burkina Faso. International Journal of Biological and Chemical Sciences 6(3), 1223–1232.
Sika NA. 2015. Assessment of stocks of edible snails in Côte d’Ivoire and test of the breeding production of two species of Achatinidae: Achatina fulica (Bowdich, 1820) and Archachatina marginata (Swainson, 1821) from protein-based foods. State thesis in natural sciences, Félix Houphouët Boigny University, 167p.
Takeda N, Ozaki T. 1986. Induction of behavior in the snail Achatina fulica. Zoological Magazine 92, 656 p.
Tattersfield P, Warui CM, Seddon MB, Kiringe JW. 2001. Land snail faunas of the Afromontane forests of Mount Kenya, Kenya: ecology, diversity, and distribution patterns. Journal of Biogeography 28, 843–861.
Tattersfield P. 1990. Terrestrial mollusc faunas of some southern Pennian forests. Journal of Conchology 33, 355–374.
Tattersfield P. 1996. Local patterns of land snail diversity in a Kenyan rainforest. Malacology 38, 161–180.
Thiombiano A. 2005. The Combretaceae of Burkina Faso: Taxonomy, ecology, dynamics, and regeneration of species. Doctoral thesis, University of Ouagadougou.
Van Mol JJ. 1970. Revision of the Urocyclidae (Mollusca, Gastropoda, Pulmonata). Anatomy, Systematics, Zoogeography. Annals of the Royal Museum of Central Africa 8(Zoological Sciences) 180, 234p.
Vrignaud S. 2010. Inventory of continental molluscs in the National Nature Reserve of Val d’Allier (Allier, France). The Grand Duke 76, 40–48.
Welter-Schultes FW. 2000. The pattern of geographic and altitudinal variation of the Cretan Abinaria land snail idea (Gastropoda: Clausiliidae). Biology of the Journal of the Linnean Society 71, 237–250.
Welter-Schultes FW. 2012. European non-marine molluscs: A guide to species identification. Planet Poster Editions, Göttingen, 760p.
Wiktor A. 1983. Some data on slugs from Morocco and Algeria with a description of a new Deroceras species (Gastropoda, Pulmonata). Treatises on Malacology, National Museum of Animal Sciences, Dresden 8(13), 155–165.
Wiktor A. 1987. Milacillae (Gastropoda, Pulmonata) systematic monograph. Annales Zoologici Polska Akademia Nauk 41(3), 153–319.
Wiktor A. 2000. Agriolimacidae (Gastropoda: Pulmonata). A systematic monograph. Annale Zoologici 49(3), 347–590.
Wronski T, Hausdorf B. 2009. Diversity and body-size patterns of land snails in a rainforest in Uganda. Journal of Molluscan Studies 76, 87–100.
Kouadio Behegbin Habib Herbert, Aman Jean Baptiste, Memel Jean Didié (2025), Diversity of molluscs in the Bagoue region (Côte d’ivoire): Influence of seasons; JBES, V26, N2, February, P102-115
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