Saved in:
| Main Author: | |
|---|---|
| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidade Estadual de Maringá
2010
|
| Subjects: | |
| Online Access: | https://www.redalyc.org/articulo.oa?id=187114391002 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Table of Contents:
- Phytoplanktonic composition of three cultivation systems used in Litopenaeus vannamei (BOONE, 1931) marine shrimp farms Michelle Pereira Melo José Marcelino Oliveira Carvalheiro Tarcísio Alves Cordeiro Andressa Ribeiro Queiroz João Paulo Prado Ivone Ferreira Borges Biología shrimp farms Floristic composition different methods of producing The aim of this work is to assess the different compositions of phytoplankton in three cultivation systems of marine shrimps Litopenaeus vannamei (BOONE, 1931), denominated as organic, intensive and semi intensive. The samples were done fortnightly, when phytoplankton was collected by a net for phytoplankton, 65 m mesh, being then filtrated in a total volume of water of 100 L, and preserved in formaldehyde solution at 4% and identified according to the methodology of Cordeiro et al. (1997). The results show that the densities of Diatoms were of 16.65, 10.47 and 7.57 cel. 103 mL-1 for the organic, intensive and semi intensive cultivations, respectively. As for cyanobacteria, the average figures were 42.06 cel. 103 mL-1 for semi intensive 17.27 cel. 103 mL-1, in the intensive cultivation and 6.11 cel. 103 mL-1 for the organic cultivation system. The dinoflagellates had the highest cellular density in the phytoplankton community analyzed with 61.9 cel. 103 mL-1 in the intensive cultivation, 0.33 and 0.03 cel. 103 mL-1 for both semi intensive and organic cultivation systems respectively. Euglenas presented the results of 4.98 and 14.86 cel. 103 mL-1 only for semi intensive and intensive cultivations. It was then concluded that all cultivations presented average rates below recommended for such studied systems. 2010 artículo científico 1679-9283 https://www.redalyc.org/articulo.oa?id=187114391002 en http://www.redalyc.org/revista.oa?id=1871 Acta Scientiarum. Biological Sciences application/pdf Universidade Estadual de Maringá Acta Scientiarum. Biological Sciences (Brasil) Num.3 Vol.32