February 15-18, 2009 Washington State Convention Center Seattle ...

EVALUATE THE OF PLANKTONIC AND BENTHIC COMMUNITIES OF MICROALGAE IN
THE SHRIMP POND (Litopenaeus vannamei)
João Batista Pereira Neto, Danielli Matias de Macêdo Dantas, Alfredo Olivera Gálvez and Luis Otavio Brito
Pernambuco Federal Rural University
Fisheries and Aquaculture Department
Dois Irmãos, 52171-900
Recife, Pernambuco, Brazil
engpescalo@hotmail.com
The present study aimed to evaluate the of planktonic and benthic communities of microalgae, and establish relationships with
the hydrological variables, management practices and the production data of the shrimp ponds.
During of period the 2005 September the 2006 september, three Litopenaeus vannamei ponds and the affluent channel were
analyzed by taking phytoplankton and benthos samples twice a week.
In the ponds were recorded information’s about the hydrological variables, climatic, culture management and the production
data.
The Cyanobacteria dominated the phytoplankton in all cycles, reaching the relative abundance of 80%, being the Pseudoanabaena
genus the main responsible for this domination. In the benthos, the Diatoms dominated with abundance over 85%.
The phytoplankton reached higher densities in the ponds, whereas the phytobenthos was dominant in the affluent channel. A
positive relation between the benthos diatoms and the shrimps´ growth was observed.
2