Geometric morphometrics was used to explore body shape morphology in 120 bluefin tuna specimens captured in a traditional trap in the western Mediterranean during the years 2008 and 2009. The shape of each individual was captured by recording the 2-D coordinates of 10 morphological pointing landmarks. We applied a general procustes analysis (GPA) in order to eliminate any morphological variations resulting from size, position or orientation of specimens. We then used the TPS (thin-plate spline) method to provide a graphical representation of shape and to compare the two sets of data. Preliminary results highlight some shape differences between the two groups and we discuss their possible sources.
Addis P., Melis P., Cannas R., Secci M., Tinti F., Piccinetti C., et al. (2010). A morphometric approach for the analysis of body shape in bluefin tuna: Preliminary results. COLLECTIVE VOLUME OF SCIENTIFIC PAPERS, 65, 982-987.
A morphometric approach for the analysis of body shape in bluefin tuna: Preliminary results.
TINTI, FAUSTO;PICCINETTI, CORRADO;
2010
Abstract
Geometric morphometrics was used to explore body shape morphology in 120 bluefin tuna specimens captured in a traditional trap in the western Mediterranean during the years 2008 and 2009. The shape of each individual was captured by recording the 2-D coordinates of 10 morphological pointing landmarks. We applied a general procustes analysis (GPA) in order to eliminate any morphological variations resulting from size, position or orientation of specimens. We then used the TPS (thin-plate spline) method to provide a graphical representation of shape and to compare the two sets of data. Preliminary results highlight some shape differences between the two groups and we discuss their possible sources.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
