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Individual-based modeling of the spread of pine wilt disease: vector beetle dispersal and the Allee effect

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Individual-based modeling of the spread of pine wilt disease: vector beetle dispersal and the Allee effect

Content Provider	Springer Nature Link
Author	Takasu, Fugo
Copyright Year	2009
Abstract	Pine wilt disease is caused by the pinewood nematode Bursaphelenchus xylophilus, which is vectored by the Japanese pine sawyer beetle Monochamus alternatus. Due to their mutualistic relationship, according to which the nematode weakens and makes trees available for beetle reproduction and the beetle in turn carries and transmits the nematode to healthy pine trees, this disease has resulted in severe damage to pine trees in Japan in recent decades. Previous studies have worked on modeling of population dynamics of the vector beetle and the pine tree to explore spatial expansion of the disease using an integro-difference equation with a dispersal kernel that describes beetle mobility over space. In this paper, I revisit these previous models but retaining individuality: by considering mechanistic interactions at the individual level it is shown that the Allee effect, an increasing per-capita growth rate as population abundance increases, can arise in the beetle dynamics because of the necessity for beetles to contact pine trees at least twice to reproduce successfully. The incubation period after which a tree contacted by a first beetle becomes ready for beetle oviposition by later beetles is crucial for the emergence of this Allee effect. It is also shown, however, that the strength of this Allee effect depends strongly on biological mechanistic properties, especially on beetle mobility. Realistic individual-based modeling highlights the importance of how spatial scales are dealt with in mathematical models. The link between mechanistic individual-based modeling and conventional analytical approaches is also discussed.
Starting Page	399
Ending Page	409
Page Count	11
File Format	PDF
ISSN	14383896
Journal	Population Ecology
Volume Number	51
Issue Number	3
e-ISSN	1438390X
Language	English
Publisher	Springer Japan
Publisher Date	2009-03-31
Publisher Place	Japan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biological invasion Bursaphelenchus xylophilus Monochamus alternatus Pinus Stochastic dispersal Forestry Behavioural Sciences Evolutionary Biology Plant Sciences Zoology Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

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Spread of the pinewood nematode vectored by the Japanese pine sawyer: modeling and analytical approaches

Different Developmental Responses of Virulent and Avirulent Isolates of the Pinewood Nematode, Bursaphelenchus xylophilus (Nematoda: Aphelenchoididae), to the Insect Vector, Monochamus alternatus (Coleoptera: Cerambycidae)

Possible altitude and temperature limits on pine wilt disease: the reproduction of vector sawyer beetles (Monochamus alternatus), survival of causal nematode (Bursaphelenchus xylophilus), and occurrence of damage caused by the disease

Evolutionary change in a pine wilt system following the invasion of Japan by the pinewood nematode, Bursaphelenchus xylophilus

Data from: Disentangling the drivers of invasion spread in a vector-borne tree disease (Dataset)

Chemotaxis of the Pinewood Nematode, Bursaphelenchus xylophilus, to Volatiles Associated with Host Pine, Pinus massoniana, and its Vector Monochamus alternatus

Research Progress on Biocontrol of Pine Wilt Disease by Microorganisms

Improving monitoring and management methods is of the utmost importance in countries at risk of invasion by the pinewood nematode

Effects of spring-killed pine trees on the epidemics of pine wilt disease

Individual-based modeling of the spread of pine wilt disease: vector beetle dispersal and the Allee effect

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Spread of the pinewood nematode vectored by the Japanese pine sawyer: modeling and analytical approaches

Different Developmental Responses of Virulent and Avirulent Isolates of the Pinewood Nematode, Bursaphelenchus xylophilus (Nematoda: Aphelenchoididae), to the Insect Vector, Monochamus alternatus (Coleoptera: Cerambycidae)

Possible altitude and temperature limits on pine wilt disease: the reproduction of vector sawyer beetles (Monochamus alternatus), survival of causal nematode (Bursaphelenchus xylophilus), and occurrence of damage caused by the disease

Evolutionary change in a pine wilt system following the invasion of Japan by the pinewood nematode, Bursaphelenchus xylophilus

Data from: Disentangling the drivers of invasion spread in a vector-borne tree disease (Dataset)

Chemotaxis of the Pinewood Nematode, Bursaphelenchus xylophilus, to Volatiles Associated with Host Pine, Pinus massoniana, and its Vector Monochamus alternatus

Research Progress on Biocontrol of Pine Wilt Disease by Microorganisms

Improving monitoring and management methods is of the utmost importance in countries at risk of invasion by the pinewood nematode

Effects of spring-killed pine trees on the epidemics of pine wilt disease

Individual-based modeling of the spread of pine wilt disease: vector beetle dispersal and the Allee effect