SciELO - Scientific Electronic Library Online

 
vol.27 número2Characterization and RNAi-mediated knockdown of a chitin synthase in Hypothenemus hampei (Curculionidae)Hunting in a peasant community of the Sierra de Huautia, Morelos, Mexico índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

  • Em processo de indexaçãoCitado por Google
  • Não possue artigos similaresSimilares em SciELO
  • Em processo de indexaçãoSimilares em Google

Compartilhar


Acta Biológica Colombiana

versão impressa ISSN 0120-548X

Resumo

CORDOBA-MEZA, Tania; ESPINOSA-DIAZ, Luisa F.  e  VIVAS-AGUAS, Lizbeth - Janet. Occurrence and distribution of cultivable Vibrio cholerae in Ciénaga Grande De Santa Marta, Colombian Caribbean. Acta biol.Colomb. [online]. 2022, vol.27, n.2, pp.199-207.  Epub 29-Maio-2024. ISSN 0120-548X.  https://doi.org/10.15446/abc.v27n2.92057.

Vibrio cholerae is a potential human pathogen that inhabits aquatic environments, although its presence and abundance have been associated with increased water temperature, little research has been done on its ecology in tropical estuarine environments, where salinity changes tend to be more important. The present study evaluated the distribution of V. cholerae in the Ciénaga Grande de Santa Marta and its relationship with temperature and salinity; For this, between 2016 and 2018 this microorganism was quantified bimonthly in surface water samples, using TCBS agar and biochemical tests. V. cholerae was detected in 57 of 198 samples (28.8 %), varying in density between 5 CFU / 100 mL and 54,800 CFU / 100 mL. Between January and September 2016 there was a high average monthly salinity (≥ 28.7 °C) and a low detection of the bacteria (0.01 %). Average salinity dropped drastically in November 2016 (9.6), coinciding with a proliferation of V. cholerae (geometric average 36.4 CFU / 100 mL). During 2017 and 2018, the average salinity remained below 15.2 and the detection of V. cholerae was higher (39.4 %) than in 2016, with higher densities in the months with lower salinity. At the BVA and NVE stations, where palaphytic populations are located, the highest average (geometric) densities were recorded, 25.3 CFU / 100mL and 15.4 CFU / 100mL, respectively. The results of this study show that salinity plays a determining role in the occurrence and abundance of V. cholerae in this tropical lagoon.

Palavras-chave : Cholera; estuary; Vibriosis; El Niño event.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )