FundaÃÃo Cearense de Apoio ao Desenvolvimento Cientifico e TecnolÃgico / As infecÃÃes bacterianas em camarÃes sÃo causadas, freqÃentemente, por
bactÃrias do gÃnero Vibrio O presente estudo teve por objetivo quantificar e
identificar Vibrio na hemolinfa do camarÃo marinho Litopenaeus vannamei
cultivado em fazendas no Estado do CearÃ, Brasil. Relacionou-se tambÃm o
tempo de coagulaÃÃo das hemolinfas com as contagens de Vibrio. Foram
realizadas 16 coletas em quatro fazendas (A, B, C e D), sendo oito para
camarÃes com 4 g, e oito para camarÃes com oito gramas. As coletas foram
realizadas nos perÃodos sazonais: chuvoso e estiagem. Perfazendo um total de
480 amostras, sendo 240 para camarÃes com 4 g e 8 g cada, respectivamente.
Os valores da Contagem PadrÃo em Placas (CPP) de vÃbrios totais, de vÃbrios
Sac+ e Sac-, nas amostras de hemolinfa dos camarÃes com 4g, no perÃodo
chuvoso, variaram de: 2,74 x 104 a 28,70 x 106 UFC/mL (est.); de < 6,0 a 14,64
x 106UFC/mL e de < 6,0 a 12,72 x 106 UFC/mL, respectivamente. Para a
hemolinfa dos camarÃes com 8 g os valores obtidos foram: 1,68 x 104 a 15,18 x
106 UFC/mL (est.), de < 6,0 a 1,8 x 105 UFC/mL e de < 6,0 a 15,18 x
106UFC/mL (est.), respectivamente. No perÃodo de estiagem esses valores
para a hemolinfa dos camarÃes de quatro gramas, foram: 9,0 x 102 (est.) a 5,40
x 104 UFC/mL vÃbrio total; < 6,0 a 1,71 x 10⁴UFC/mL (Sacâ) e de < 6,0 a 5,40 x
104 UFC/mL (Sac+). Para os camarÃes com 8 g a contagem de VÃbrio total foi
de 9,0 x 102 (est.) a 2,0 x 107, de < 6,0 a 4,02 x 106 UFC/mL (Sac-) e de < 6,0 a
2,0 x 10⁷ UFC/mL (est.) (Sac +). Os resultados mostram que os Ãndices de
colÃnias de Vibrio Sac- e Sac+ foram maiores no perÃodo chuvoso do que no
de estiagem. NÃo houve relaÃÃo entre o tempo de coagulaÃÃo e as contagens
de Vibrio na hemolinfa dos camarÃes. As espÃcies que predominaram nos
perÃodos estudados foram: V. coralliilyticus, V. parahaemolyticus, Vibrio
pelagius II, Vibrio alginolyticus, Vibrio mediterranei, Vibrio mimicus, Vibrio
vulnificus B1. / Most of shrimp bacterial infections are caused by Vibrio bacteria genus. This
study aims to quantify identify Vibrio in the hemolymph of the marine shrimp
Litopenaeus vannamei cultivated in farms in State of Cear, Brazil. Related is
also the time of coagulation of hemolymph with counts of Vibrio. Sixteen
samples were performed on four farms (A, B, C and D), eight shrimps with 4 g,
and eight with eight grams shrimps. The collections were made in seasonal
periods: rainy and drought. A total of 480 samples, and 240 to shrimps with 4 g
and 8 g each, respectively. The values in the Standard Plate Count (SPC) of
total vibrio, Vibrio Suc+ and Suc- in the hemolymph of shrimp samples with 4 g,
in the rainy season ranged from: 2. 74 x 10⁴ to 28.70 x 10⁶ CFU/mL (est.), <6.0
to 14.64 x 106CFU/mL and <6.0 to 12.72 x 106 CFU/mL, respectively. For
hemolymph of shrimp with 8 g of the SPC and the total Vibrio Suc+ and Sucranged
from 1.68 x 10⁴ to 15.18 x 10⁶ CFU/mL (est.), <6.0 to 1.8 x 105 CFU/mL
and <6.0 to 15.18 x 106CFU/mL (est). During the period of drought for these
values of shrimp haemolymph of four grams, were: 9.0 x 10Â (est.) to 5.40 x 104
CFU mL total Vibrio, <6.0 to 1.71 x 10⁴CFU/mL (Suc-) and <6.0 to 5.40 x 104
CFU/mL (Suc+). For shrimp with 8 g a total Vibrio count was 9.0 x 10Â (est.)
CFU/mL to 2.0 x 10⁷, <6.0 to 4.02 x 106 CFU/mL (Suc-) and <6.0 to 2.0 x
10⁷CFU/mL (est.) (Suc+). The results show that the rates of colonies of Vibrio
Suc- and Suc+ were higher in the rainy season than in the drought. There was
no relationship between the time of coagulation and the counts of Vibrio in the
hemolymph of shrimps. The species that predominated in the period were: V.
coralliilyticus, V. parahaemolyticus, Vibrio pelagius II, Vibrio alginolyticus, Vibrio
mediterranei, Vibrio mimicus, Vibrio vulnificus B1
| Identifer | oai:union.ndltd.org:IBICT/oai:www.teses.ufc.br:4930 |
| Date | 01 February 2009 |
| Creators | Edirsana Maria Ribeiro de Carvalho |
| Contributors | Regine Helena Silva dos Fernandes Vieira, Silvana Saker Sampaio, Ernesto Hofer |
| Publisher | Universidade Federal do CearÃ, Programa de PÃs-GraduaÃÃo em Engenharia de Pesca, UFC, BR |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da UFC, instname:Universidade Federal do Ceará, instacron:UFC |
| Rights | info:eu-repo/semantics/openAccess |
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