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Titolo:
Interspecific hybridization and genetic variability of Phlebotomus sandflies
Autore:
Ghosh, KN; Mukhopadhyay, JM; Guzman, H; Tesh, RB; Munstermann, LE;
Indirizzi:
Yale Univ, Sch Med, Dept Epidemiol & Publ Hlth, New Haven, CT 06520 USA Yale Univ New Haven CT USA 06520 iol & Publ Hlth, New Haven, CT 06520 USA Univ Texas, Med Branch, Ctr Trop Dis, Galveston, TX 77555 USA Univ Texas Galveston TX USA 77555 , Ctr Trop Dis, Galveston, TX 77555 USA
Titolo Testata:
MEDICAL AND VETERINARY ENTOMOLOGY
fascicolo: 1, volume: 13, anno: 1999,
pagine: 78 - 88
SICI:
0269-283X(199902)13:1<78:IHAGVO>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
LUTZOMYIA-LONGIPALPIS DIPTERA; PAPATASI DIPTERA; PSYCHODIDAE; LEISHMANIASIS; POLYMORPHISM; COLONIZATION; CONSEQUENCES; DISPERSAL; CULICIDAE; COMPLEX;
Keywords:
Phlebotomus bergeroti; P-duboscqi; P-papatasi; sandflies; leishmaniasis vectors; hybrid sterility; population genetics; isozyme electrophoresis; India; Israel;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
39
Recensione:
Indirizzi per estratti:
Indirizzo: Munstermann, LE Yaleven,v, Sch Med, Dept Epidemiol & Publ Hlth, 60 Coll St,706 LEPH, New Ha Yale Univ 60 Coll St,706 LEPH New Haven CT USA 06520 ew Ha
Citazione:
K.N. Ghosh et al., "Interspecific hybridization and genetic variability of Phlebotomus sandflies", MED VET ENT, 13(1), 1999, pp. 78-88

Abstract

The first successful hybridization is reported between Phlebotomus papatasi and P. duboscqi, two important Old World sandfly vectors of leishmaniasisand other diseases. Laboratory strains of P. papatasi and P. duboscqi wereseparable by six diagnostic enzyme loci: Est-3, Idh-1, Mdh-2, Mpi, Tre-1 and Tre-3. Hybrids between the two species were verified by the recovery of heterozygous isozyme patterns for the diagnostic loci. No F-2 or backcross progeny were obtained. P. papatasi was separated from P. bergeroti by threediagnostic enzyme loci: Est-3, Mpi and Pgd. The isozyme patterns of P. hergerori contain elements of both P. duboscqi and P. papatasi, although sevendiagnostic loci (Est-3, Idh-1, Me, Mpi, Pgd, Tre-1 and Tre-3) separated P.bergeroti from P. duboscqi. Genetic variability profiles of the three species were established for 20 enzyme loci. Three geographically distant strains of P. papatasi from Calcutta, Maharashtra and Israel had isozyme geneticdistances of < 0.05. The recently established Calcutta strain showed an unexpectedly low genetic variability with only one (Idh-2) of 20 loci being polymorphic (average heterozygosity of 1.9 %) in contrast to 5-8 polymorphicloci (10-12 % heterozygosity) in the Maharashtra and Israel strains. Mass and single pair crosses between the three P. papatasi strains were fertile with normal progeny numbers. Thus we found no signs of speciation in P. papatasi.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/09/20 alle ore 19:03:01