Species concepts

Species Concepts and Species Delimitation

— The issue of species delimitation has long been confused with that of species conceptualization, leading to a half century of controversy concerning both the definition of the species category and methods for inferring the boundaries and numbers of species. Alternative species concepts agree in treating existence as a separately evolving metapopulation lineage as the primary defining property...

Species concepts and species delimitation.

The issue of species delimitation has long been confused with that of species conceptualization, leading to a half century of controversy concerning both the definition of the species category and methods for inferring the boundaries and numbers of species. Alternative species concepts agree in treating existence as a separately evolving metapopulation lineage as the primary defining property o...

Species, Concepts Of

cladistic A classification based entirely on monophyletic taxonomic groupings within a phylogeny; taxonomic units that are paraphyletic or polyphyletic are rejected. A ‘‘cladist’’ is one who practices ‘‘cladistics,’’ usually in the sense of using parsimony to adjudicate between data from multiple characters in the construction of a ‘‘cladogram,’’ which is an estimate of the true phylogeny. cohe...

SPECIES CONCEPTS AND SPECIES IDENTIFICATION Species Concepts, Species Boundaries and Species Identification: a View from the Tropics

Species concepts in Calonectria (Cylindrocladium)

Species of Calonectria and their Cylindrocladium anamorphs are important plant pathogens worldwide. At present 52 Cylindrocladium spp. and 37 Calonectria spp. are recognised based on sexual compatibility, morphology and phylogenetic inference. The polyphasic approach of integrating Biological, Morphological and Phylogenetic Species Concepts has revolutionised the taxonomy of fungi. This review ...