Fig. 3From: Population structure, growth and production of the yellow clam Mesodesma mactroides (Bivalvia: Mesodesmatidae) from a high-energy, temperate beach in northern ArgentinaMonthly length–frequency distribution of M. mactroides collected between December 2004 and December 2006 at Santa Teresita (black histograms) compared with historical data from Olivier et al. (1971) sampled between 1968 and 1969 at Mar Azul (grey histograms)Back to article page