The pearl oyster Pinctada imbricata radiata (Leach, 1814) is considered as an invasive species and despite its presence, for more than half of a century in the Mediterranean its fisheries in Greek waters is illegal, unregulated and unreported (IUU) due to lack of legal framework and fisheries exploitation. The present study is based on a three-level approach including a(n): (a) in-situ field sampling of live shell specimens, (b) estimation of biological and population parameters and (c) estimate of population stock state complemented with in-depth interviews conducted to fishers. The specimens of the pearl oyster were collected from two enclosed gulfs in Greek waters from November 2018 to October 2019. Asymptotic lengths (L${}_{\mathrm{\propto }}$) were estimated at 100.63 mm and 103.04 mm, in the North Evoikos and Saronikos Gulfs, respectively and the growth coefficient (K) was estimated at 0.47 year ⁻¹ and 0.34 year ⁻¹, respectively. The longevity of the species was estimated at 5 years. Total mortality coefficients (Z) were 1.92 year ⁻¹ and 1.44 year ⁻¹, in the two areas, respectively and the exploitation levels (E) were computed as 0.68 year ⁻¹ and 0.65 year ⁻¹, respectively. The results of the present study will fill the gaps in knowledge of pearl oyster to set up a reference base for its exploitation as a fishery resource based on invasive species.

珍珠牡蛎Pinctada imbricata radiata（Leach，1814）被认为是一种入侵物种，尽管它存在，但在地中海超过半个世纪的时间里，由于缺乏法律框架和渔业开发。本研究是基于包括（n）的三电平的方法：（a）中的原位的外壳带电标本场采样，（b）中的生物和总体参数估计和与补充的人口库存状态（c）估计对渔民进行了深入采访。从2018年11月至2019年10月，在希腊水域的两个封闭海湾中采集了珍珠贝的样本。${}_{\mathrm{\propto }}$）在北部Evoikos海湾和Saronikos海湾估计分别为100.63毫米和103.04毫米，并且增长系数（K）分别估计为0.47年^-1和0.34年^-1。该物种的寿命估计为5年。这两个地区的总死亡率系数（Z）分别为1.92年^-1和1.44年^-1，开发水平（E）分别计算为0.68年^-1和0.65年^-1。本研究的结果将填补珍珠牡蛎知识的空白，从而为将其作为入侵物种的渔业资源利用奠定基础。