Preliminary evidence for human fecal contamination in corals of the Florida Keys, USA.

Abstract:

:Corals and reef environments are under increased stress from anthropogenic activities, particularly those in the vicinity of heavily populated areas such as the Florida Keys. The potential adverse impacts of wastewater can affect both the environment and human health; however, because of the high decay rate of bacterial indicators in coral reef waters it has been difficult to document the presence of microbial contaminants and to assign risks in these environments. Here we show initial evidence that microorganisms associated with human feces are concentrated along the surface of coral heads relative to the overlying water column in the Florida Keys. Bacterial indicators (fecal coliform bacteria, enterococci or Clostridium perfringens) were detected in 66.7% of the coral surface microlayer (CSM) samples at levels between five and 1000 CFU/100 ml, but were found infrequently and at low numbers in the overlying water column ( < or = 2.5 CFU/100 ml). Similarly, enterovirus nucleic acid sequences, an indicator of human-specific waste, were detected in 93.3% of the CSM samples and only once in the water column by cell culture. Results show that coral mucus may accumulate enteric microorganisms in reef environments, and may indicate a risk to public and environmental health despite low indicator levels in the surrounding water.

journal_name

Mar Pollut Bull

authors

Lipp EK,Jarrell JL,Griffin DW,Lukasik J,Jacukiewicz J,Rose JB

doi

10.1016/s0025-326x(01)00332-0

subject

Has Abstract

pub_date

2002-07-01 00:00:00

pages

666-70

issue

7

eissn

0025-326X

issn

1879-3363

pii

S0025-326X(01)00332-0

journal_volume

44

pub_type

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