MULTIPLE CRYPTIC SPECIES: MOLECULAR DIVERSITY AND REPRODUCTIVE ISOLATION IN THE BOSTRYCHIA RADICANS/B. MORITZIANA COMPLEX (RHODOMELACEAE, RHODOPHYTA) WITH FOCUS ON NORTH AMERICAN ISOLATES

摘要: Red algae of the Bostrychia radicans/B. moritziana complex are common in warm temperate areas North America. Phylogenetic analysis both plastid and mitochondrial DNA sequence data revealed seven distinct evolutionary lineages among worldwide samples. Although only two haplotypes (plastid mitochondrial) were found Pacific Mexico, four 11 a similar latitudinal spread along Atlantic coast United States. On U.S. one haplotype was northern samples (Connecticut to Carolina), whereas further south several found. analyses suggested that this single could be result northward range expansion possibly since last glacial maximum. Crossing within same lineage showed with generally sexually compatible; different reproductively isolated. Samples from Mexico partially compatible some USA C) more closely related these than other Compatible solute types mirrored haplotype, B having sorbitol, all also contained dulcitol. USA, (e.g. vs. C), but lineage, isolated each other. Data indicate reproductive isolation occurs between supported number cryptic species is high.