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Titolo:
Serological estimates of the seasonal dynamics of Erwinia tracheiphila in Acalymma vittata (Coleoptera : Chrysomelidae)
Autore:
Fleischer, SJ; de Mackiewicz, D; Gildow, FE; Lukezic, FL;
Indirizzi:
Penn State Univ, Dept Entomol, University Pk, PA 16802 USA Penn State Univ University Pk PA USA 16802 l, University Pk, PA 16802 USA Penn State Univ, Dept Plant Pathol, University Pk, PA 16802 USA Penn StateUniv University Pk PA USA 16802 l, University Pk, PA 16802 USA
Titolo Testata:
ENVIRONMENTAL ENTOMOLOGY
fascicolo: 3, volume: 28, anno: 1999,
pagine: 470 - 476
SICI:
0046-225X(199906)28:3<470:SEOTSD>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
CUCUMBER BEETLES COLEOPTERA; BACTERIAL WILT; BAITS; CANTALOUPE; MUSKMELON; CUCURBITS; PLANTS;
Keywords:
Acalymma vittatum; Erwinia tracheiphila; bacterial wilt; cucurbits; epidemiology;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Fleischer, SJ Penn State Univ, Dept Entomol, University Pk, PA 16802 USA Penn State Univ University Pk PA USA 16802 Pk, PA 16802 USA
Citazione:
S.J. Fleischer et al., "Serological estimates of the seasonal dynamics of Erwinia tracheiphila in Acalymma vittata (Coleoptera : Chrysomelidae)", ENV ENTOMOL, 28(3), 1999, pp. 470-476

Abstract

Serological assays were used to estimate the proportion of Acalymma vittata (F.) that harbored Erwinia tracheiphila (E. F. Smith) Holland, the causalagent of bacterial wilt in cucurbits. These proportions were related to the proportion of A. vittata that transmitted disease in single beetle caged bioassays. The serological assays classified beetles as harboring the bacteria when the titer was above approximate to 10(5) cells per beetle. From 7.1 to 10.7% of the A. vittata captured as they emerged from soil that had been in cucurbits the previous rear tested positive for the presence off. tracheiphila. Also, from 0 to 8.3% of beetles captured on squash traps during this time of beetle emergence tested positive. This provides strong serological evidence for A. vittata serving as the primary overwintering. reservoir for E. tracheiphila. During the growing season, the proportion of beetlestesting positive with serological assays varied and ranged up to approximate to 53, 78, and 39% in 1995, 1996, and 1997, respectively. These serological proportions were 3.6-5.1 times higher than the proportion of beetles that transmitted disease in single beetle caged bioassays, and explained 14-49% of the variation in the proportion of beetles that were able to transmitdisease in the caged bioassays. We suggest the proportion of A. vittata that harbored at least some E, trachciphila cells may be >5 times higher thanthe proportion of beetles that can, alone, transmit disease in a short time. We discuss these data as supporting the hypothesis of beetle aggregationbehavior as an important component of bacterial wilt epidemiology.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/09/20 alle ore 05:25:56