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Titolo:
Modeling the spread of pine wilt disease caused by nematodes with pine sawyers as vector
Autore:
Yoshimura, A; Kawasaki, K; Takasu, F; Togashi, K; Futai, K; Shigesada, N;
Indirizzi:
Nara Womens Univ, Dept Informat & Comp Sci, Nara 6308506, Japan Nara Womens Univ Nara Japan 6308506 rmat & Comp Sci, Nara 6308506, Japan Doshisha Univ, Dept Knowledge Engn & Comp Sci, Kyo Tanabe 6100321, Japan Doshisha Univ Kyo Tanabe Japan 6100321 mp Sci, Kyo Tanabe 6100321, Japan Hiroshima Univ, Fac Integrated Arts & Sci, Hiroshima 7938521, Japan Hiroshima Univ Hiroshima Japan 7938521 s & Sci, Hiroshima 7938521, Japan Kyoto Univ, Appl Bot Lab, Fac Agr, Kyoto 6068224, Japan Kyoto Univ KyotoJapan 6068224 pl Bot Lab, Fac Agr, Kyoto 6068224, Japan
Titolo Testata:
ECOLOGY
fascicolo: 5, volume: 80, anno: 1999,
pagine: 1691 - 1702
SICI:
0012-9658(199907)80:5<1691:MTSOPW>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
BURSAPHELENCHUS-XYLOPHILUS NEMATODA; MONOCHAMUS-ALTERNATUS COLEOPTERA; HOPE COLEOPTERA; WOOD NEMATODE; CERAMBYCIDAE; APHELENCHOIDIDAE; TRANSMISSION; INFECTION; SEEDLINGS; DENSITY;
Keywords:
Bursaphelenchus xylophilus; eradication; invasion condition; mechanistic model; Monochamus alternatus; nematode; obligatory mutualism; pine sawyer beetle; pine wilt disease; threshold host density vs. eradication rate; vector-borne disease;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
53
Recensione:
Indirizzi per estratti:
Indirizzo: Shigesada, N Nara Womens Univ, Dept Informat & Comp Sci, Kita Uoya Nishimachi, Nara 6308506, Japan Nara Womens Univ Kita Uoya Nishimachi Nara Japan 6308506 pan
Citazione:
A. Yoshimura et al., "Modeling the spread of pine wilt disease caused by nematodes with pine sawyers as vector", ECOLOGY, 80(5), 1999, pp. 1691-1702

Abstract

An epidemic of pine wilt disease has been spreading in wide areas of Japanfor nearly a century. The disease is caused by the pinewood nematode, Bursaphelenchus xylophilus, with the pine sawyer, Monochamus alternatus, as vector. The spread of disease is facilitated by an obligatory mutualism between the nematode and the pine sawyer: the pine sawyer helps the nematode transmit to a new host tree, while the nematode supplies the pine sawyer with newly killed trees on which to lay eggs. We present a mathematical model to describe the host-vector interaction between pines and pine sawyers carrying nematodes, on the basis of detailed data on the population dynamics of pine sawyers and the incidence of pine wilt disease at a study site located on the northwest coast of Japan. We used the model to simulate the dynamics of the disease and predict how the epidemic could be controlled by eradication of the pine sawyer, The main results are as follows: (1) There is a minimum pine density below which the disease always fails in invasion. However, even if the pine density exceeds this minimum, the disease fails in invasion due to the Allee effect when the density of pine sawyers is very low. (2) The: minimum pine density increases disproportionately with increase in the eradication rate. (3) The probability that a healthy tree will escape from infection until the epidemic dies out decreases sharply with increase in the initial pine density or the initial density of pine sawyers.

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Documento generato il 25/01/20 alle ore 06:16:08