Is there any research on whether this local adaptations have a genetic or epigenetic origin? One would expect it to be purely genetic, but I'd be super-cool if

Is there any research on whether this local adaptations have a genetic or epigenetic origin? One would expect it to be purely genetic, but I'd be super-cool if the Portia had developed some way to transmit learned adaptations to their descendants. The reason it's at least plausible is that epigenetics seem to be involved in the memory formation process (http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3549063/ http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3549063/)