Frequency of neoplasia in the baltic clam Limecola balthica from the Gulf of Gdańsk between 1999-2002

The presented dataset contains data describing the frequency of neoplasia in one of the most common bivalve species inhabiting the Baltic Sea, the baltic clam Limecola balthica. The frequency of neoplasia was assessed at various locations of the Gulf of Gdańsk between years 1999 - 2002. The dataset contains information describing the sampling areas such as geographical position, depths, and basic hydrological characteristics recorded during sampling. The diagnosis of neoplasia was performed using various techniques such as histology, flow cytometry and cytogenetics. The leucemia-like cancer occurring in this bivalve species is currently of unknown origin. The spatial and temporal changes in the occurrence of the disease are highlighted with the cancer occurring at high frequency in clams inhabiting deeper regions of the Gulf of Gdańsk and lower frequency is observed in more shallow localities.