Changes in diet of a neotropical cichlid in response to river damming

Document title: Changes in diet of a neotropical cichlid in response to river damming
Journal: Acta scientiarum. Biological sciences
System number: 000433602
ISSN: 1679-9283
Authors: 1
Institutions: 1Universidade Estadual de Mato Grosso do Sul, Centro de Estudos em Recursos Naturais, Dourados, Mato Grosso do Sul. Brasil
Volumen: 41
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Analítico, descriptivo
English abstract Changes in diet of Laetacara araguaiae Ottoni and Costa, 2009 were evaluated in the Sucuriú River (Upper Paraná basin, Brazil) in an area with a small hydroelectric power plant, both before and after the formation of the reservoir, in order to answer: Did the construction of the reservoir affected the diet ofthis species? The results showed greater change of diet composition in the upstream section of the reservoir. It was observed that before the formation of the reservoir and the first year after, the individuals from upstream section formed a group characterized by an insectivorous diet. With the dam construction and habitat change we observed that aquatic plant material, sediment, and algae predominated in the diet. These results show the opportunistic feeding habit of L. araguaiaeand contribute to the understanding of how the impoundment of rivers can influence the trophic dynamics of the ichthyofauna
Disciplines: Biología
Keyword: Biología acuática,
Impacto ambiental,
Hábitos alimenticios,
Espectro trófico,
Laetacara araguaiae,
Keyword: Aquatic biology,
Environmental impact,
Feeding habits,
Trophic spectrum,
Laetacara araguaiae,
Full text: