Data/hora: 01/06/2024 09:22:30

Provedor de dados: | 83
País: | Brazil
Título: | Body condition and energy density of juvenile streaked prochilod Prochilodus lineatus (Valenciennes, 1837) in a Neotropical floodplain
Autores: | Corbetta,Daiany de Fátima; Veronezzi,Ana Lúcia; Benedito,Evanilde.
Data: | 2016-01-01
Ano: | 2016
Palavras-chave: | Condition Factor; Food web; Habitat; Impact; Paraná basin.
Resumo: | ABSTRACT Variations in energetic density (E  D ) and the relative condition factor (K  n ) of juveniles of Prochilodus lineatus were investigated to identify whether these two variables respond similarly to environmental factors. We hypothesized that fluviometric levels in different sub-basins of the Upper Paraná River floodplain positively influence the E  D and K  n of juvenile fish. Temporally, the values of E  D and K  n were linked more directly to the dynamics of the flood pulses on the plain. Spatially, the lowest values of E  D and K  n were observed in the environment that was directly affected by the operation of dams, the sub-basin Paraná. Although the energy density and condition factor did not show similar results for juveniles in some of the analyses, the evaluation of both parameters provided a complementary tool and additional information that enabled a more accurate investigation of the temporal and spatial dynamic processes in this Neotropical floodplain. We conclude that water level variations in different sub-basins of the Upper Paraná River floodplain considerably affect the relative condition factor and energy status of P. lineatus . We suggest that the impacts of this modification should be mitigated or avoided in order to maintain fish stocks and promote ecosystem integrity.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000400201
Editor: | Sociedade Brasileira de Ictiologia
Relação: | 10.1590/1982-0224-20150035
Formato: | text/html
Fonte: | Neotropical Ichthyology  v.14 n.4 2016
Fonte: | info:eu-repo/semantics/openAccess