Diet shifts and food selection of perch Perca fluviatilis and roach Rutilus rutilus in humic lakes of varying water colour.
J Fish Biol
; 77(1): 241-56, 2010 Jul.
Article
em En
| MEDLINE
| ID: mdl-20646150
ABSTRACT
The field data from four humic lakes suggested that water colour may have both direct and indirect effects on inter- and intra-specific interactions of perch Perca fluviatilis and roach Rutilus rutilus. The results agree with suggestions that, compared with R. rutilus, P. fluviatilis may be an inferior forager on zooplankton in highly coloured water. As an indirect effect, water colour decreases the coverage of macrophytes and limits suitable littoral habitats, benefiting R. rutilus over P. fluviatilis. Perca fluviatilis benefiting from complex habitats does not have the advantage in macrophyte-poor highly coloured water.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Percas
/
Cyprinidae
/
Dieta
/
Preferências Alimentares
/
Água Doce
Limite:
Animals
País/Região como assunto:
Europa
Idioma:
En
Revista:
J Fish Biol
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Finlândia