BIOSYSTEMATIC ANALYSIS OF 2 TELEOSTEAN PO PULATIONS (SARDINA-PILCHARDUS) AND OF THEIR PARASITE COPEPODES (PERODERMA-CYLINDRICUM) ALONG TUNISIAN COASTS

A genetic analysis realized, on tunisian coats, within and between two populations of a Teleostean (Sardina pilchardus) on one hand, and two populations of their parasitic Copepods (Peroderma cylindricum) on th e other hand, reveal that: (I) the 14 loci analysed are monomorphic in the Teleostean populations; (II) 3 loci among 13 investigated are pol ymorphic in the Copepod populations. Statistical tests from deviations of Hardy-Weinberg equilibrium and genotypic homogeneity show the exis tence of strong gen flows within and between Copepod populations. Thus , it seems that the Teleostean (Sardina pilchardus) and the Copepod (P eroderma cylindricum) constitute, at least on Tunisian coasts, two hom ogeneous taxinomic units.