Mathematical Model of Basal Sprout Production in Vector-Borne Tree Disease

被引:2
|
作者
Buch, Kelly Ruth [1 ,2 ]
Fefferman, Nina H. H. [2 ,3 ,4 ]
机构
[1] Austin Peay State Univ, Dept Math & Stat, Clarksville, TN 37044 USA
[2] Univ Tennessee, Dept Math, Knoxville, TN 37996 USA
[3] Univ Tennessee, Dept Ecol & Evolutionary Biol, Knoxville, TN 37996 USA
[4] Natl Inst Math & Biol Synth, Knoxville, TN 37996 USA
来源
FORESTS | 2023年 / 14卷 / 02期
关键词
laurel wilt; forest pathology; mathematical modeling; plant population dynamics; disease ecology; conservation epidemiology; AMBROSIA BEETLE COLEOPTERA; LAUREL WILT DISEASE; REDBAY TREES; POPULATIONS; ECOLOGY; CURCULIONIDAE; SCOLYTINAE; CHESTNUT; HISTORY;
D O I
10.3390/f14020349
中图分类号
S7 [林业];
学科分类号
0829 ; 0907 ;
摘要
Some tree species respond to disease by producing basal sprouts from the base and root system of a dying tree, which can alter disease dynamics by altering demography. In the case of many lethal, airborne tree diseases, the production of basal sprouts can be a key contributor to population resurgence post-epidemic, but the effect in lethal, vector-borne tree diseases has not yet been studied. To determine the role of basal sprout production and secondary infection via the root system of infected parent trees in lethal, vector-borne tree diseases, we develop a stage-structured SI-X mathematical model and use laurel wilt, a vector-borne tree disease in which infected trees provide suitable material for vector reproduction, as our model system. The mathematical model shows that the production and secondary infection of basal sprouts do not affect the short-term dynamics of laurel wilt but profoundly alter the long-term dynamics of the laurel wilt epidemic. In particular, in the absence of basal sprout infection, basal sprout production yields a larger host population after disease establishment, but as secondary infection increases, the utility of basal sprouts to maintain the host population decreases. Results suggest management strategies for lethal, vector-borne diseases should depend on the ratio of the basal sprout production rate to the secondary infection rate.
引用
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页数:18
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