Lake Victoria ecosystem has been undergoing several changes since the 1920s as a result of eutrophication and since the 1950s as a result of introduced fish species like Nile perch (Lates niloticus). Because of these changes, it is believed that the ecology and biology of the indigenous fish species of Lake Victoria have changed as well. One of the indigenous fish species of Lake Victoria is Rastrineobola argentea (Dagaa). In contrast to other fish species of Lake Victoria, information on the food items and feeding habits (selectivity) of Dagaa is limited. The main aim of this study was to find out the major food items of Dagaa, to assess whether Dagaa feeds selectively and how Dagaa and its preys are distributed spatially in Mwanza Gulf- Lake Victoria. Dagaa‘s dietary preferences were determined using the modified Ivlev electivity index from the expression (Di = (ri-pi)/ ((ri+pi)-(2ripi))). Results indicated that, Cyclopoids dominated as the major food item for Dagaa and were selected while calanoids were avoided.
Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.
Vendeur : BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, Allemagne
Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Lake Victoria ecosystem has been undergoing several changes since the 1920s as a result of eutrophication and since the 1950s as a result of introduced fish species like Nile perch (Lates niloticus). Because of these changes, it is believed that the ecology and biology of the indigenous fish species of Lake Victoria have changed as well. One of the indigenous fish species of Lake Victoria is Rastrineobola argentea (Dagaa). In contrast to other fish species of Lake Victoria, information on the food items and feeding habits (selectivity) of Dagaa is limited. The main aim of this study was to find out the major food items of Dagaa, to assess whether Dagaa feeds selectively and how Dagaa and its preys are distributed spatially in Mwanza Gulf- Lake Victoria. Dagaa's dietary preferences were determined using the modified Ivlev electivity index from the expression (Di = (ri-pi)/ ((ri+pi)-(2ripi))). Results indicated that, Cyclopoids dominated as the major food item for Dagaa and were selected while calanoids were avoided. 56 pp. Englisch. N° de réf. du vendeur 9783659785191
Quantité disponible : 2 disponible(s)
Vendeur : moluna, Greven, Allemagne
Etat : New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Tibihika Papius DiasAuthor: Papius Dias Tibihika, MSc. Aquaculture and Fisheries from Wageningen University and Research Centre, the Netherlands. Current work/employment:2012 to date: Research officer/Programme leader, livestock and . N° de réf. du vendeur 158605451
Quantité disponible : Plus de 20 disponibles
Vendeur : buchversandmimpf2000, Emtmannsberg, BAYE, Allemagne
Taschenbuch. Etat : Neu. This item is printed on demand - Print on Demand Titel. Neuware -Lake Victoria ecosystem has been undergoing several changes since the 1920s as a result of eutrophication and since the 1950s as a result of introduced fish species like Nile perch (Lates niloticus). Because of these changes, it is believed that the ecology and biology of the indigenous fish species of Lake Victoria have changed as well. One of the indigenous fish species of Lake Victoria is Rastrineobola argentea (Dagaa). In contrast to other fish species of Lake Victoria, information on the food items and feeding habits (selectivity) of Dagaa is limited. The main aim of this study was to find out the major food items of Dagaa, to assess whether Dagaa feeds selectively and how Dagaa and its preys are distributed spatially in Mwanza Gulf- Lake Victoria. Dagaa's dietary preferences were determined using the modified Ivlev electivity index from the expression (Di = (ri-pi)/ ((ri+pi)-(2ripi))). Results indicated that, Cyclopoids dominated as the major food item for Dagaa and were selected while calanoids were avoided.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 56 pp. Englisch. N° de réf. du vendeur 9783659785191
Quantité disponible : 1 disponible(s)
Vendeur : AHA-BUCH GmbH, Einbeck, Allemagne
Taschenbuch. Etat : Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Lake Victoria ecosystem has been undergoing several changes since the 1920s as a result of eutrophication and since the 1950s as a result of introduced fish species like Nile perch (Lates niloticus). Because of these changes, it is believed that the ecology and biology of the indigenous fish species of Lake Victoria have changed as well. One of the indigenous fish species of Lake Victoria is Rastrineobola argentea (Dagaa). In contrast to other fish species of Lake Victoria, information on the food items and feeding habits (selectivity) of Dagaa is limited. The main aim of this study was to find out the major food items of Dagaa, to assess whether Dagaa feeds selectively and how Dagaa and its preys are distributed spatially in Mwanza Gulf- Lake Victoria. Dagaa's dietary preferences were determined using the modified Ivlev electivity index from the expression (Di = (ri-pi)/ ((ri+pi)-(2ripi))). Results indicated that, Cyclopoids dominated as the major food item for Dagaa and were selected while calanoids were avoided. N° de réf. du vendeur 9783659785191
Quantité disponible : 1 disponible(s)
Vendeur : preigu, Osnabrück, Allemagne
Taschenbuch. Etat : Neu. Selective feeding and distribution of the cyprinid Rastrineobola argen | Papius Dias Tibihika (u. a.) | Taschenbuch | 56 S. | Englisch | 2015 | LAP LAMBERT Academic Publishing | EAN 9783659785191 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu. N° de réf. du vendeur 104128230
Quantité disponible : 5 disponible(s)