Stocks of Dolphins ('Stenella' spp. and 'Delphinus delphis') in the EasternTropical Pacific: A Phylogeographic Classification

摘要

Current information is reviewed that provides clues to the intraspecificstructure of dolphin species incidently killed in the yellowfin tuna purse-seine fishery of the eastern tropical Pacific (ETP). Four species are reviewed: pantropical spotted, Stenella attenuata spinner, S. longirostris, striped, S. coeruleoalba; and common, Delphinus delphis, dolphins. For each species, distributional, demographic, phenotypic, and genotypic data are summarized, and the putative stocks are categorized based on four hierarchal phylogeographic criteria relative to their probability of being evolutionarily significant units.