PARTIAL SEQUENCE OF THE SHRIMP PENAEUS-NOTIALIS MITOCHONDRIAL GENOME

About half of the mitochondrial DNA of the shrimp Penaeus notialis (Cr ustacea: Decapodea) has been cloned (in 2 overlapping fragments of 7.9 kb and 1 kb) and partially sequenced. The gene content and arrangemen t are identical to that of the homologous domain in Drosophila yakuba. Intergenic nucleotides are scarce and a 982 bo non-coding sequence ex hibit features similar to that 1 of mtDNA control regions. The gene or ganization and the tRNA structures differentiate Penaeus notialis mito chondrial genome from that of Artemia franciscana. Paraphyletism of cr ustacean mtDNA with respect to Insecta is discussed. A secondary struc ture of s-rRNA is proposed.