Département de Biologie, Section d'Hydrobiologie, Laboratoire de Limnologie, Centre de Recherche en Sciences Naturelles (CRSN-Lwiro), D.S. Bukavu, RD Congo
An experience was taken to the laboratory of Limnology of the CRSN/Lwiro in view to verify if fishes Barbus pellegrini would get acclimatized well in captivity and would consume larvas of mosquitos because well-known of entomophages, it of the 23/04 at 12/05/2014. To the term of this one, we noted a good acclimatization of our fishes in their surroundings of raising; larvas of mosquitos submitted to our fishes were consumed since the 6 hours of their submissiveness. When to what was to know how much of larvas a fish could consume, a variation in active number of 4 to 10 larvas in 24h was him. It has is sufficient 9 to 14 days so that develop himself of mosquito larvas in adults.
A systematic sampling of the aquatic macrofauna of the Kalengo River has been achieved of October 2011 to September 2012 in five stations according to the method Man-time. To the whole 56 species were inventoried, repartees in 7 groups taxonomies to know: Bugs (35 species, either 62, 5%), Mollusks (8, either 14,3%), Fishes (6, either 10,7%), Annelids (3, either 5,4%), the Plathelmintheses (2, either 3,6%), Crustaceans and Amphibians (1, either 1,8%). Bugs, Mollusks and Annelids were present in all sites and it during all year round of survey. The evolution of populations of the aquatic macrofauna during the period of survey, watch a certain stability of the total specific wealth and a better representativeness during months of April and June.
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