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Influence of phosphate in the growth and biochemical composition of the Chlorophyceae Pseudokirchneriella subcapitata and implications on production and biochemical composition of the Anostraca Dendrocephalus brasiliensis fed with this algae

Grant number: 11/22005-9
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): March 01, 2012
Effective date (End): February 28, 2013
Field of knowledge:Agronomical Sciences - Fishery Resources and Fishery Engineering - Aquaculture
Principal researcher:Maria da Graça Gama Melão
Grantee:Lays de Oliveira Goncalves Alho
Home Institution: Centro de Ciências Biológicas e da Saúde (CCBS). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
Associated research grant:08/02078-9 - Ecophysiological and production studies of the freshwater Anostraca Dendrocephalus brasiliensis Pesta 1921 and its implications on zooplanktonic and nektonic communities, AP.TEM

Abstract

Aquaculture is an expanding activity in Brazil and in the world, but there are great difficulties in the production of fish's larvae and alevins, and other aquatic organisms, due to the difficulty of accepting dry rations as a first food. Thus, the availability of live food, especially zooplankton, is essential to ensure survival and healthy development of young stages of fish and crustaceans. However, obtaining enough zooplankton biomass to attend growing worldwide demand is still a huge obstacle to aquaculture. The Neotropical freshwater Anostraca Dendrocephalus brasiliensis has a great potential for use in national aquaculture, due to its big size, easy growing and high attractivity to fish. This anostracean is a filter-feeding and consumes large amounts of algae. Biochemical composition of many species of micro algae can be modified by changing environmental conditions of growth media. Thus, this study aims to analyze the biochemical composition of the Chlorophyta Pseudokirchneriella subcapitata grown under different phosphate (K2HPO4) concentrations and check its influence on secondary production and biochemical composition of D. brasiliensis fed with this alga.

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