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Titolo:
Occurrence of sibling species of Lutzomyia longipalpis (Diptera : Psychodidae) in Venezuela: First evidence from reproductively isolated sympatric populations
Autore:
Lampo, M; Torgerson, D; Marquez, LM; Rinaldi, M; Garcia, CZ; Arab, A;
Indirizzi:
Inst Venezolano Invest Cient, Ctr Ecol, Caracas 1020A, Venezuela Inst Venezolano Invest Cient Caracas Venezuela 1020A as 1020A, Venezuela Univ Guelph, Dept Zool, Guelph, ON N1G 2W1, Canada Univ Guelph Guelph ON Canada N1G 2W1 ept Zool, Guelph, ON N1G 2W1, Canada Univ Estadual Paulista, Dept Biol, BR-13506900 Rio Claro, SP, Brazil Univ Estadual Paulista Rio Claro SP Brazil BR-13506900 BClaro, SP, Brazil
Titolo Testata:
AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE
fascicolo: 6, volume: 61, anno: 1999,
pagine: 1004 - 1009
SICI:
0002-9637(199912)61:6<1004:OOSSOL>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
LEISHMANIASIS EPIDEMIOLOGY; PHLEBOTOMINE SANDFLIES; GENETIC-VARIABILITY; COLOMBIA; COMPLEX; NUMBER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Lampo, M Inst Venezolano Invest Cient, Ctr Ecol, Apartado 21827, Caracas 1020A, Venezuela Inst Venezolano Invest Cient Apartado 21827 Caracas Venezuela 1020A
Citazione:
M. Lampo et al., "Occurrence of sibling species of Lutzomyia longipalpis (Diptera : Psychodidae) in Venezuela: First evidence from reproductively isolated sympatric populations", AM J TROP M, 61(6), 1999, pp. 1004-1009

Abstract

The delimitation of cryptic species within the main vector of the Americanvisceral leishmaniasis, Lutzomyia longipalpis, remains a topic of controversy. An analysis of generic variability based on 8 enzymatic loci revealed fixed differences in 2 diagnostic loci, adenylate kinase (Ak) and hexokinase (Hk), between sympatric and allopatric populations at 4 localities in Venezuela. The absence of heterozygotes for these 2 loci within 1 locality indicates, for the first time, the presence of 2 sympatric reproductively isolated populations or cryptic species within L. longipalpis. Significant differences were also detected between these cryptic species in the allele frequencies of glucose-6-phosphate isomerase (Gpi) and malate dehydrogenase, decarboxylating (Me). One species showed mean heterozygosities that ranged between 6.6% and 6.7%, with 1.6-1.9 alleles detected per locus, while the other had mean heterozygosities that ranged from 4.3% to 6.3%, with 1.3-1.6 alleles per locus. Comparisons of isozyme profiles with published data suggests that 1 species is similar to the L. longipalpis described in Colombian and Brazilian populations, whereas the other has not been previously reported.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/10/20 alle ore 10:58:23