Fig. 4From: Population structure, growth and production of the yellow clam Mesodesma mactroides (Bivalvia: Mesodesmatidae) from a high-energy, temperate beach in northern ArgentinaThe VBGF (grey lines) of M. mactroideswas estimated with the FISAT program from monthly length–frequency data (black histograms for the period December 2004 to December 2006)Back to article page