Fig. 2. (a) Changes in Taranto mussel production, (b) quality (expressed as condition index CI), and (c) flesh weight (expressed as dry weight). Letters in the first panel identify the following events: (A) cholera epidemic (1973); (B) crisis of the heavy industry that made many farmers return to their old occupations; introduction of long-lines; (C) policy changes and illegal occupation of new areas (G. Portacci, unpublished data).

Fig. 2