2. We assayed the functional equivalence of three congeneric, morphologically similar predatory fish species (genus Enneacanthus). Functional equivalence was evaluated using aspects of both effects of ...

Abstract Species recognition is critical for maintaining species barriers by preventing interbreeding between distinct species that co-occur and regularly interact. In birds, feather ornamentation is ...

S. M. Siegel, B. Z. Siegel, A Living Organism Morphologically Comparable to the Precambrian Genus Kakabekia, American Journal of Botany, Vol. 55, No. 6, Part 1 (Jul ...