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Titolo:
SHORT REPORT - DIAPAUSE, TRANSOVARIAL TRANSMISSION, AND FILIAL INFECTION-RATES IN GEOGRAPHIC STRAINS OF LA-CROSSE VIRUS-INFECTED AEDES TRISERIATUS
Autore:
WOODRING J; CHANDLER LJ; ORAY CT; MCGAW MM; BLAIR CD; BEATY BJ;
Indirizzi:
COLORADO STATE UNIV,ARTHROPOD BORNE & INFECT DIS LAB,COLL VET MED & BIOMED SCI,DEPT MICROBIOL FT COLLINS CO 80523 COLORADO STATE UNIV,ARTHROPOD BORNE & INFECT DIS LAB,COLL VET MED & BIOMED SCI,DEPT MICROBIOL FT COLLINS CO 80523
Titolo Testata:
The American journal of tropical medicine and hygiene
fascicolo: 5, volume: 58, anno: 1998,
pagine: 587 - 588
SICI:
0002-9637(1998)58:5<587:SR-DTT>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
CULICIDAE; DIPTERA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
10
Recensione:
Indirizzi per estratti:
Citazione:
J. Woodring et al., "SHORT REPORT - DIAPAUSE, TRANSOVARIAL TRANSMISSION, AND FILIAL INFECTION-RATES IN GEOGRAPHIC STRAINS OF LA-CROSSE VIRUS-INFECTED AEDES TRISERIATUS", The American journal of tropical medicine and hygiene, 58(5), 1998, pp. 587-588

Abstract

La Crosse (LAC) virus is transmitted horizontally to vertebrates and vertically to progeny by Aedes triseriatus mosquitoes, and in northernmidwestern states, this virus overwinters in diapausing eggs of the vector. In Florida, the vector remains active throughout the year and does not diapause. To determine if there is an association between diapause and vertical transmission efficiency of LAC virus, transovarial transmission (TOT), and filial infection (FI) rates were determined forgeographic strains of Ae. triseriatus. The TOT rates were not significantly different for Ae. triseriatus originating from Florida (78%) and those from Wisconsin (85%). The FI rates did differ significantly between the two groups (33% and 45%, respectively, for the Florida and Wisconsin mosquitoes). Furthermore, a line of mosquitoes was selected from a Wisconsin colony that had a reduced diapause phenotype (the AD-strain). While this strain displayed TOT rates that were the same as the other Wisconsin mosquitoes (85%), the FI rates were significantly lower (34%), indicating a reduction in TOT efficiency. The role of vertical transmission capacity in LAC virus endemicity remains to be determined.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 17:52:37