Reference : Étude du régime et de la sélectivité alimentaire du grand cormoran (Phalacrocorax carbo)...

	Document type :	Scientific journals : Article
	Discipline(s) :	Life sciences : Zoology
	To cite this reference:	http://hdl.handle.net/2268/132102

Title :	Étude du régime et de la sélectivité alimentaire du grand cormoran (Phalacrocorax carbo) sur le lac Kivu (R.D. Congo)
Language :	French
Alternative title :	[en] Diet and dietary selectivity of the cormorant (Phalacrocorax carbo) in the Kivu lake (RDC)
Author, co-author :	Musema Bahizire, Altor [> >]
	Libois, Roland [Université de Liège - ULg > Département de Biologie, Ecologie et Evolution > Zoogéographie >]
Publication date :	2010
Journal title :	Annales des Sciences et Sciences Appliquées de l'Université Officielle de Bukavu
Publisher :	Univ. de Bukavu
Volume :	2
Pages :	1-6
Peer reviewed :	No
Audience :	National
City :	Bukavu
Country :	RDC
Keywords :	[en] diet ; cormorant ; Lake Kivu
Abstract :	[en] This contribution intends to give a preliminary view of the diet of the Cormorant on the lake Kivu. Fifty pellets were collected from August to October 2004 in a colony situated in Bukavu and analysed. A reference collection of fish skull bones was also prepared and correlations between the length of some characteristic bones and the total length of the fish were computed, allowing the assessment of the length of each prey identified in the pellets. The cormorants eat mainly Haplochromis species (either in relative abundance or occurrences) but the biomass intake is dominated by the genera Tilapia and Oreochromis (together: 65 %). The importance of catfish (Clarias sp.) or barbels (Barbus sp.) is very small (< 4%, whatever the expression of the results). The sardine Limnothrissa miodon appears in 1 out of 5 pellets but its contribution in terms of biomass is negligible. Comparing the diet with the available resources, it appears that the cormorant is an opportunistic predator, taking almost all the available taxa (except Raiamas moorii) without selecting a particular one, except the big cichlids (genus Tilapia and Oreochromis). However, more than 90% of its preys are small fish measuring less than 10 cm.
Funders :	Commission universitaire pour le Développement - CUD
Target :	Researchers ; Students
Permalink :	http://hdl.handle.net/2268/132102

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