Genotypic evolution in the face of phenotypic conservativeness abudefduf pomacentridae from the atlantic and pacific sides of panama
Gorman, G.C.; Kim, Y.J.
Copeia 4: 694-697
ISSN/ISBN: 0045-8511 DOI: 10.2307/1443168
A. saxatilis and A. troschelii from the Atlantic and Pacific sides of Panama are geminate species that show little morphological differentiation. Absolute differences occur at 7 of 28 enzyme loci. The clock hypothesis suggests a divergence time of 5 million yr. Genotypic evolution of enzyme loci appears to be a function of time and uncorrelated with the rate of morphological evolution.