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Titolo:
A GENERAL CLASSIFICATION OF NEW-WORLD LEISHMANIA USING NUMERICAL ZYMOTAXONOMY
Autore:
CUPOLILLO E; GRIMALDI G; MOMEN H;
Indirizzi:
INST OSWALDO CRUZ,DEPT BIOCHEM & MOLEC BIOL,CP926 BR-21045900 RIO JANEIRO BRAZIL INST OSWALDO CRUZ,DEPT IMMUNOL BR-21045900 RIO JANEIRO BRAZIL
Titolo Testata:
The American journal of tropical medicine and hygiene
fascicolo: 3, volume: 50, anno: 1994,
pagine: 296 - 311
SICI:
0002-9637(1994)50:3<296:AGCONL>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
SP-N KINETOPLASTIDA; CUTANEOUS LEISHMANIASIS; GENUS LEISHMANIA; AMAZONIAN BRAZIL; SAND FLIES; OLD-WORLD; MEXICANA; PARASITE; TRYPANOSOMATIDAE; POPULATIONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
44
Recensione:
Indirizzi per estratti:
Citazione:
E. Cupolillo et al., "A GENERAL CLASSIFICATION OF NEW-WORLD LEISHMANIA USING NUMERICAL ZYMOTAXONOMY", The American journal of tropical medicine and hygiene, 50(3), 1994, pp. 296-311

Abstract

More than 250 strains of Leishmania isolated from different localities and hosts in the New World were analyzed by enzyme electrophoresis, and their electromorphic profiles were compared with 19 reference strains representing most of the described species of this parasite. The 18 enzymic loci analyzed were very polymorphic, and the strains were classified into 44 zymodemes, each grouping strains with the same enzymeprofiles. Each zymodeme was considered as an elementary taxon and thephenetic and phylogenetic relationships were determined by agglomerative hierarchical, ordination, and cladistic techniques. The different classification methods produced very similar results. The 44 zymodemescould be clustered into two groups, corresponding to the subgenera Leishmania and Viannia, by the numerical methods. The subgenus Viannia was shown to be monophyletic and could be further divided into species complexes representing L. braziliensis, L. naiffi, and L. guyanensis/Lpanamensis/L shawi, as well as some isolated taxa including L. lainsoni. The subgenus Leishmania, on the other hand, was polyphyletic, withNew World isolates related to L. major clustered separately from the L. mexicana species complex. Most of the other zymodemes in this grouprepresented independent taxa. The results confirm Viannia as a valid taxon but suggest that the status of the subgenus Leishmania should befurther investigated. Leishmania braziliensis and L. naiffi were shown to be the most polymorphic species, while L. guyanensis, in spite ofbeing the most common species found in this study, was remarkably homogeneous. The only variants were found south of the Amazon river. North of this river, the species was monomorphic.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 18:02:24