Early life stages of fish and the relationships with zooplankton in a tropical Brazilian reservoir: Lake Monte Alegre
Braz. j. biol
;
62(1): 41-50, Feb. 2002. ilus, tab, graf
Article
in English
| LILACS
| ID: lil-321285
RESUMO
For evaluating the trophic relationship between early life stages of fish and zooplankton in Lake Monte Alegre, fish distribution and feeding habits have been studied in areas with and without macrophytes. In the first of these areas, 356 specimens belonging to 8 species, mostly juveniles, were caught by a sieve. Another 35 specimens, belonging to 4 species, were caught by gill nets and seine in areas lacking macrophytes. Their diets were composed of aquatic insects, microcrustaceans, rotifers, detritus, and other aquatic invertebrates. Microcrustacean prey were mainly littoral or benthic dwellers, found in the highest proportion in specimens of 7-20 mm SL. Most fish species have parental care, which could explain the absence of planktonic larvae. Early life stages of fish do not exert a predation pressure on the lake zooplankton
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Predatory Behavior
/
Zooplankton
/
Fishes
Country/Region as subject:
South America
/
Brazil
Language:
English
Journal:
Braz. j. biol
Journal subject:
Biology
Year:
2002
Type:
Article
/
Project document
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade de Säo Paulo/BR
Similar
MEDLINE
...
LILACS
LIS