Abstract
In mussels, stress signals such as heat, osmotic shock and hypoxia lead to the activation of the phosphorylated p38 mitogen activated protein kinase (pp38-MAPK). This stress activated protein has been efficiently used as a biomarker to several natural and anthropogenic stresses. However, what has not been tested is whether differences in gender or size can affect the response of this biomarker. The present study tested whether there was variation in the expression of pp38-MAPK in mussels Perna perna of different gender and size classes when exposed to natural stress conditions, such as air exposure. The results show that gender does not affect the expression of pp38-MAPK. However, size does have an effect, where mussels smaller than 6.5 cm displayed significantly (p < 0.05) lower levels of pp38-MAPK when compared to those larger than 7 cm. Mussels are one of the most used bioindicator species and the use of biomarkers to determine the health status of an ecosystem has been greatly increasing over the years. The present study highlights the importance of using mussels of similar size classes when performing experiments using stress-related biomarkers.
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Acknowledgements
The authors would like to thank the staff at CEADS—Ilha Grande for using their facilities to collect and process the mussels. The authors also thank the anonymous reviewer for the suggestions that greatly improved the final version of the paper. This work was funded through ‘CNPq/ Programas Ciências do Mar Brazil/Germany’ (n° 59004/2005-0).
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Zilberberg, C., Sereno, D., Lima, G. et al. Effect of Mussel’s Gender and Size on a Stress Response Biomarker. Water Air Soil Pollut 217, 317–320 (2011). https://doi.org/10.1007/s11270-010-0589-4
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DOI: https://doi.org/10.1007/s11270-010-0589-4