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PHYLOGENETIC SELECTION OF A RESOURCE: A NEW USE FOR CLADISTICS
Author(s) -
Dreckmann K. M.,
De LaraIsassi G.,
AlvarezHernández S.
Publication year - 2000
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1046/j.1529-8817.1999.00001-56.x
Subject(s) - cladistics , biology , taxon , clade , phylogenetic tree , taxonomy (biology) , evolutionary biology , phylogenetics , zoology , ecology , biochemistry , gene
A phylogenetic model for the selection of commercial resources using the cladistic method is proposed. The group selected as an example was the marine agarophyte red algal genus Gracilaria Greville. We suggest the use of the cladistic principle of evolutionary transformational series in order to test the quality of agars instead of the assay‐herror traditional method that consumes time and budget. If we asume that the “good quality of agar” in extant taxa is a sinapomorphic character (but not a reliable taxonomic one), then taxa included in the same monophiletic clade in which the species with “good quality of agar” are, has a high evolutionary posibility to share that character. In order to do this we have to incorporate to the set of available specific characters, those of the taxa actually used as a agar source but not present in the area under scope. A complete set of the basic cladistic data required for run the most popular program currently in use (PAUP) are provided. We applied the model to the Mexican Atlantic species and found that, using Gracilaria chilensis and G. cornea as “indicator taxa,” and found Mexican populations of G. crassissima , G. caudata , G. cervicornis and Gracilariopsis lemaneiformis are candidates for a study of yield and agar properties.