Evaluation of filtration rate of bivalve’s Barbatia hellblingii and Saccostrea cucullata and possibility of their using species of as biomonitor in coasts of Persian Gulf

Filtration in bivalves is the most important physiological and biological activities that can redound absorption of environmental contaminations. Since Saccostrea cucullata and Barbatia hellbingii are well distributed in Bushehr coasts, this investigation is carried out to evaluate the potential of these species to filtrate more Chlorella volgaris algae. The filtration rate of the Saccostrea cucullata and Barbatia hellbingii were measured at 25 °C and 36 ppt in the laboratory using concentration of chlorella volgaris. Results showed filtration rate of Saccostrea cucullata and Barbatia hellbingii were 29.3683 ± 0.46212 and 31.1453 ± 0.66055, respectively. There was a significant difference between mean filtration rates with the two treatments (P < 0.05), and Barbatia hellbingii showed higher filtration rate in experimental condition, so it can be suggested Barbatia hellbingii as a better biomonitor.