The brown mussel, Perna perna, is an ecologically important species which has a great potential for aquaculture in Ghana. Though it is harvested from the wild for consumption locally, there is no information on its population parameters to guide its management and subsequent culturing. The species inhabiting Iture rocky beach near Cape Coast (Ghana) was therefore investigated to elucidate its growth and other population parameters. Specimens had shell length ranging from 5.00 to 78.0 mm, a modal shell length class of 35.0–39.9 mm, and exhibited negative allometric growth. The asymptotic length (L∞), growth coefficient (K), and growth performance index (Φ') were 80.10 mm, 0.49 per year, and 3.49, respectively. The recruitment pattern showed that P. perna has year‐round recruitment with a single peak between April and July. Total mortality (Z) was estimated at 2.79 per year, while natural mortality (M) and fishing mortality (F) were 0.87 and 1.92 per year, respectively. The calculated exploitation level of the population (E = 0.69) suggests possible overfishing of the mussels at Iture rocky beach. These results could serve as baseline information for management of the mussel population in Ghana.

中文翻译：

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加纳海角海岸附近岩石海滩上的棕贻贝Perna per的种群动态

褐贻贝Perna perna是一种重要的生态物种，在加纳具有巨大的水产养殖潜力。尽管它是从野外收获的，供当地消费，但尚无有关其种群参数的信息来指导其管理和后续培养。因此，对居住在加纳开普海岸附近Iture岩滩的物种进行了调查，以阐明其生长和其他种群参数。标本的壳长范围为5.00至78.0 mm，模态壳长等级为35.0–39.9 mm，并表现出负异形生长。渐近长度（大号∞），生长系数（ķ）和生长性能指数（Φ'）为80.10毫米，0.49每年，和3.49，分别。招聘模式表明P. perna全年进行招募，在4月到7月之间达到一个高峰。总死亡率（Z）估计为每年2.79，而自然死亡率（M）和捕捞死亡率（F）分别为每年0.87和1.92。计算得出的人口剥削水平（E  = 0.69）表明，Iture石滩上的贻贝可能过度捕捞。这些结果可作为管理加纳贻贝种群的基准信息。