Beltrán, Carlos, Luis Vargas, and Pedro Quijón. 2005. “Infestation of Polydora Rickettsi (Polychaeta: Spionidae) in Shells of Crepidula Fecunda (Mollusca: Calyptraeidae) in Relation to Intertidal Exposure at Yaldad Bay, Chiloe, Chile”. Scientia Marina 69 (1):99-103. https://doi.org/10.3989/scimar.2005.69n199.