Data/hora: 06/06/2024 06:13:45

Provedor de dados: 	5	
País: 	France	
Título: 	Diel feeding periodicity, daily ration and relative food consumption in some fish populations in three reservoirs of Sri Lanka	
Autores: 	Weliange, Wasantha S.; Amarasinghe, Upali S.; Moreau, Jacques; Villanueva, Ching-maria.	
Data: 	2006-07	
Ano: 	2006	
Palavras-chave: 	Cichlidae; Cyprinidae; Trophic modelling; Freshwater fish; Feeding chronology; Diel feeding pattern.	
Resumo: 	Twelve diel surveys were carried out in three reservoirs of Sri Lanka viz. Minneriya, Udawalawe and Victoria, to investigate diel feeding patterns, daily ration and relative food consumption in fish populations. Stomach content weights of different size classes of various fish species in the three reservoirs in 12 diel surveys were analysed using an iterative method, MAXIMS. Predominantly herbivorous or detritivorous fish species such as Amblypharyngodon melettinus and Oreochromis niloticus exhibited one peak in the diel feeding pattern. Two peak feeding periods were evident in predominantly insectivores and/or zooplanktivores (e. g., Puntius chola and Rasbora daniconius) and interestingly in macrophyte feeders (i.e., Etroplus suratensis, Puntius filamentosus and Tilapia rendalli). It might be possible that all species with two feeding peaks in diel feeding patterns rely on vision for feeding. Food consumption per biomass (Q/B ratio) defined as amount of food consumed per unit weight of an age-structured population of fish was estimated on the basis of the average quantities of food consumed over a long period of time by various size classes in order to minimize the bias of estimates.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	http://archimer.ifremer.fr/doc/2006/publication-2134.pdf

DOI:10.1051/alr:2006023	
Editor: 	EDP Sciences	
Relação: 	http://archimer.ifremer.fr/doc/00000/2134/	
Formato: 	application/pdf	
Fonte: 	Aquatic Living Resources (0990-7440) (EDP Sciences), 2006-07 , Vol. 19 , N. 3 , P. 229-237	
Fonte: 	2006 EDP