Reference : Diet and food preference of the waterbuck (Kobus ellipsiprymnus defassa) in the Pendjari...

	Document type :	Scientific journals : Article
	Discipline(s) :	Life sciences : Zoology
	To cite this reference:	http://hdl.handle.net/2268/117092

Title :	Diet and food preference of the waterbuck (Kobus ellipsiprymnus defassa) in the Pendjari National Park, Benin
Language :	English
Author, co-author :	Kassa, Barthélemy [ > > ]
	Libois, Roland [Université de Liège - ULg > Département de Biologie, Ecologie et Evolution > Zoogéographie >]
	Sinsin, Brice [ > > ]
Publication date :	2008
Journal title :	African Journal of Ecology
Publisher :	Blackwell Publishing
Volume :	46
Issue/season :	3
Pages :	303-310
Audience :	International
ISSN :	0141-6707
Keywords :	[en] waterbuck ; Benin ; Pendjari national park ; food selectivity
Abstract :	[en] This study investigated composition and selectivity in diet for waterbuck in the Pendjari National Park in northwestern Benin, through the use of micrographic analysis of faecal samples. Three plant species (Panicum anabaptistum, Echinochloa stagnina and Andropogon gayanus) were regularly consumed all year round. Meanwhile, three other species (i.e., Hyparrhenia involucrata, Acroceras amplectens and Oryza barthii) are mostly found in its diet during the beginning of the rainy season. During the dry season, long life grasses (>40%) and tree forage (about 35%) were the most dominant life form in the diet. On the contrary at the beginning of the rainy season, annual species (> 50%) were dominant. In conclusion, the waterbuck has a grazer regime when plant species are abundant and a mixed diet during the dry season. Waterbuck’s food niche breath, defined by Hespenheide [Ecology and Evolution of communities. Harvard Univ. Press, 1975], was lower than 1, implying this antelope does not eat all food categories in a proportional way. Shannon diversity index showed that the diet was more diversified during the rainy season and less diversified at the end of the dry season. Based on [Ecology, 64 (1983), 1297] diet selectivity index, waterbuck exerted a positive selection on the major graminaceous species.
Funders :	Commission universitaire pour le Développement - CUD
Target :	Researchers ; Professionals
Permalink :	http://hdl.handle.net/2268/117092

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