Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Cellular responses of the starfish Parvalustra exigua to metal pollution in False Bay, South Africa

Cellular responses of the starfish Parvalustra exigua to metal pollution in False Bay, South Africa The cushion sea star Parvalustra exigua from five sites along the shore of False Bay on the southern coast of South Africa was studied using two cellular biomarkers, the neutral red retention assay (NRR) and the lysosomal destabilization assay (DI) to assess damage in the coelomocytes in response to metals. This was compared to pollution levels using a pollution load index (PLI) calculated for metals present. Laboratory exposures to cadmium were done to verify biomarker responses. The PLIs for the sites correlated with the levels of anthropogenic activities and effluent inflow. The highest pollution was at Muizenberg, with human habitation on the shore level, a fishing harbour and informal settlements. These specimens had shorter NRR times, indicating more damage than those from sites with lower pollution. The DI results also correlated with pollution levels. This study provided evidence that P. exigua has potential for monitoring environmental pollution, using biomarkers, especially in southern coastal areas due to its distribution. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png African Zoology Taylor & Francis

Cellular responses of the starfish Parvalustra exigua to metal pollution in False Bay, South Africa

Reinecke, Sophié A.; Reinecke, Adriaan J.
African Zoology , Volume 49 (2): 14 – Oct 1, 2014
Download PDF
14 pages

Cellular responses of the starfish Parvalustra exigua to metal pollution in False Bay, South Africa

Abstract

The cushion sea star Parvalustra exigua from five sites along the shore of False Bay on the southern coast of South Africa was studied using two cellular biomarkers, the neutral red retention assay (NRR) and the lysosomal destabilization assay (DI) to assess damage in the coelomocytes in response to metals. This was compared to pollution levels using a pollution load index (PLI) calculated for metals present. Laboratory exposures to cadmium were done to verify biomarker responses. The PLIs...
Loading next page...
 
/lp/taylor-francis/cellular-responses-of-the-starfish-parvalustra-exigua-to-metal-blWU5FCHNu
Publisher
Taylor & Francis
Copyright
© Zoological Society of Southern Africa
ISSN
2224-073X
eISSN
1562-7020
DOI
10.1080/15627020.2014.11407639
Publisher site
See Article on Publisher Site

Abstract

The cushion sea star Parvalustra exigua from five sites along the shore of False Bay on the southern coast of South Africa was studied using two cellular biomarkers, the neutral red retention assay (NRR) and the lysosomal destabilization assay (DI) to assess damage in the coelomocytes in response to metals. This was compared to pollution levels using a pollution load index (PLI) calculated for metals present. Laboratory exposures to cadmium were done to verify biomarker responses. The PLIs for the sites correlated with the levels of anthropogenic activities and effluent inflow. The highest pollution was at Muizenberg, with human habitation on the shore level, a fishing harbour and informal settlements. These specimens had shorter NRR times, indicating more damage than those from sites with lower pollution. The DI results also correlated with pollution levels. This study provided evidence that P. exigua has potential for monitoring environmental pollution, using biomarkers, especially in southern coastal areas due to its distribution.

Journal

African Zoology – Taylor & Francis

Published: Oct 1, 2014

Keywords: Parvalustra exigua; heavy metals; pollution load index; neutral red retention assay; lysosomal destabilization assay; biomarkers

There are no references for this article.