English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

This study investigated the population parameters, condition and diet of Oligosarcus paranensis at Fiu and Mourao Reservoirs, located in Parana State, Brazil. The fishes were collected quarterly between 1996/1997 and 1998/1999 using gillnets. Food items were quantified by volumetric method. The specimens at Fiu showed comparatively smaller length and worse condition. Sex ratio was statistically equal to 1:1 at Mourao, whereas there was a significant predominance of males at Fiu. Sex ratio also varied among size classes. Allometric growth prevailed among the studied groups. The diet consisted mainly of fishes and was complemented with invertebrates and plant matter in both reservoirs. There was a change in the feeding pattern as the standard length increased. Fishes changed from invertivores to piscivores, except for males in Mourao, for which a reverse trend occurred.

biota neopropica/biota neotropica

Population structure, condition and diet of Oligosarcus paranensis (Menezes &amp; Gery, 1983) (Osteichthyes: Characidae) at two reservoirs in South Brazil