![]() Genetic diversity for the snook species studied was slightly higher than the mean estimation reported in allozymes for 106 marine fish (0.055) and for anadromous fish species (0.043 to 0.057). Multilocus allele frequency homogeneity tests and population-subdivision estimates for both allozyme and RAPD markers revealed the existence of population structure in C. medius, in coincidence with geographic separation of samples, whereas no divergence was detected in C. This finding may be attributed to the greater population size of C. robalito, which originated by a recent population range expansion, and hence the potential for dispersal is mediated by larval drift. ![]() Instituto de Ciencias del Mar y Limnología-CONABIO, México Fluctuations in population size and population range expansion are used to explain discrepancies between levels of genetic diversity and population structure in the studied species.ĪrticleTitleUse of allelic frequencies to describe population structureĪrticleTitleEcología y estructura de las comunidades de peces en el sistema lagunar Teacapán-Agua Brava, Nayarit, MéxicoĪmezcua-Linares F (1996) Peces demersales de la plataforma continental del Pacífico central de México. ![]()
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