A novel animal model for accumulated palytoxin bioassay in associated communities with zoanthids using Dara Index

چکیده مقاله

Palytoxin (PTX) is a potent marine toxin that produced by zoanthids in coral islands of the Persian Gulf. The purpose of this study was to collect more information on Zoanthus sansibaricus toxicity as the dominant species of Hormuz Island and the consequences of exposure to PTX on associated communities with it. Hence, zoanthid colonies were collected during reef walk at low tide in April 2016. Also, among associated communities, snails were collected from the rock for experimental purpose as they are very abundant on and around Hormuz Island reef. In this model for each transect, 36 snails were divided into 4 set, each set had 3 replicates and working mucus solution, as PTX exist in the mucus of zoanthids, was injected in 2 different doses. Results showed that no snails were dead during the study period. However, calculation of Dara Index (DI) was indicated PTX accumulation in high toxin concentrations in snail’s foot and thus snail can be introduced as an indicator of ecotoxicity conditions.

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