Morphological screening of carp Cyprinus carpio: relationship between morphology and fillet yield

We propose a simple method to quantify the morphology of 2-3-year-old carps (Cyprinus carpio) which is related to their fillet yield. This method is b ased on the automated image analysis of the lateral projection of the fish (mask). Seven morphological measurements specifically related to fillet yie ld of carps were defined. The comparison between this method and the conven tional quantification of fish shape, based on measurements of skeletal land marks, increases the significance of this fitting. From the analysis of the morphometric data, we propose a profitable carp morphotype which is define d by four angles and two distances which quantify the shape sf the head and the position of the caudal peduncle, respectively. The main characteristic of this morphotype is the absence of a large dorsal development, and the v entral position of the caudal peduncle. (C) Ifremer/Elsevier, Paris.