| tempo and mode of speciation in the baja california disjunct fish species anisotremus davidsonii. | the baja california region provides a natural setting for studying the early mechanisms of allopatric speciation in marine systems. disjunct fish populations from several species that occur in the northern gulf of california and northern pacific coast of baja california, but are absent from its southern shores, were previously shown to be genetically isolated, making them excellent candidates for studying allopatry. in addition, one of these species, the sargo anisotremus davidsonii, has two pai ... | 2005 | 16262860 |