Composition, diversity and short-term temporal fluctuations of zooplankton communities in fish culture ponds (Pindamonhangaba), SP

Brazilian Journal of Biology

Nf. Negreiros²  Ne. Rojas¹  O. Rocha¹  Mj. Santos Wisniewski¹ 

[1] ,Universidade Federal de São Carlos Programa de Pós-Graduação em Ecologia e Recursos Naturais São Carlos SP ,Brazil

关键词: fish pond;    zooplankton;    diversity;    temporal fluctuations;    viveiros;    zooplâncton;    diversidade;    flutuações temporais;   

DOI  :  10.1590/S1519-69842009000400005

来源: SciELO

【 摘 要 】

The present study aimed at evaluating the composition, diversity and short-term temporal fluctuations of zooplankton communities in fish ponds. The study was carried out in two fish ponds, with 180 m² of water surface (6 × 30 m) each, located in the Aquiculture Centre of the Pindamonhangaba Fisheries Institute - São Paulo. The study was developed over eight weeks, from February 16 to April 6, 1998. The physical and chemical conditions of the water in the fish ponds were adequate for zooplankton development. The zooplanktonic community was characterised by high richness of species and a greater diversity was observed in the first fish pond, with a superior density of Rotifera. Temporal changes in zooplankton composition occurred in both ponds with Cladocera appearing in abundance later, in the fourth week, whereas copepods and rotifers were well represented since the beginning. Many species found are typical of fish ponds and are considered to constitute an excellent food source, showing high nutritional value for fish larvae, a good example being individuals from the Rotifera group and the micro-crustacean species Moina minuta and Thermocyclops decipiens.

【 授权许可】

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