By: Ferdaus Mohamat-Yusuff, Dhilshad Shereen Mohamed Ibrahim, Aqilah Mukhtar

Article Prepared By: Farah Izana Abdullah

Blood cockles Tegillarca granosa are Malaysia's main semi-cultured shellfish species, dominating 93% of the total shellfish species production for domestic demand and exports to Thailand and Singapore. The states of Johor, Selangor, Perak, and Pulau Pinang are essential in producing adult T. granosa and act as the cockle spat's natural habitat. However, the total production of T. granosa has been significantly decreasing despite increasing farming areas.

Diuron is an active biocide in antifouling paint for marine structures and is a source of pollution in the aquatic environment. However, minimal data address the effect of Diuron on T. granosa. This study aimed to identify the toxicity effect of Diuron on T. granosa by determining accumulation in the soft tissues and alteration in the gill tissue structure. Overall, the amount of Diuron accumulated in the T. granosa's soft tissue does not proportionately increase with the increment of exposure concentration due to the cockle's susceptibility and behavior that excrete and limit the Diuron accumulation. The mean index values of the gill histopathology ranged from 5.25–7.67 and were classified as moderate to severe. Gills characteristics and T. granosa protective behavior potentially limit Diuron accumulation in the soft tissue.

Web: https://doi.org/10.1016/j.marpolbul.2021.113071

Date of Input: 23/12/2022 | Updated: 23/12/2022 | m_fakhrulddin