scholarly journals Measuring the Flight Ability of the Ambrosia Beetle, Platypus Quercivorus (Murayama), Using a Low-Cost, Small, and Easily Constructed Flight Mill

10.3791/57468 ◽  
2018 ◽  
Author(s):  
Ryuichi Okada ◽  
Duy Long Pham ◽  
Yasuto Ito ◽  
Michimasa Yamasaki ◽  
Hidetoshi Ikeno
Keyword(s):  
Low Cost ◽  
Ambrosia Beetle ◽  
Flight Ability ◽  
Platypus Quercivorus ◽  
Flight Mill

Potential impact of global warming on deciduous oak dieback caused by ambrosia fungus Raffaelea sp. carried by ambrosia beetle Platypus quercivorus (Coleoptera: Platypodidae) in Japan

2002 ◽  
Vol 92 (2) ◽  
pp. 119-126 ◽  
Author(s):  
N. Kamata ◽  
K. Esaki ◽  
K. Kato ◽  
Y. Igeta ◽  
K. Wada
Keyword(s):  
Global Warming ◽  
Reproductive Success ◽  
Evolutionary Process ◽  
Ambrosia Beetle ◽  
Quercus Crispula ◽  
Platypus Quercivorus ◽  
Stable Relationship ◽  
Future Global Warming ◽  
Potential Impact ◽  
Associated Species

AbstractDeciduous oak dieback in Japan has been known since the 1930s, but in the last ten years epidemics have intensified and spread to the island’s western coastal areas. The symbiotic ambrosia fungus Raffaelea sp. is the causal agent of oak dieback, and is vectored by Platypus quercivorus (Murayama). This is the first example of an ambrosia beetle fungus that kills vigorous trees. Mortality of Quercus crispula was approximately 40% but much lower for associated species of Fagaceae, even though each species had a similar number of beetle attacks. It is likely that other oaks resistant to the fungus evolved under a stable relationship between the tree, fungus and beetle during a long evolutionary process. Quercus crispula was probably not part of this coevolution. This hypothesis was supported by the fact that P. quercivorus showed the least preference for Q. crispulayet exhibited highest reproductive success in this species. Therefore, P. quercivorus could spread more rapidly in stands with a high composition of Q. crispula. The present oak dieback epidemic in Japan probably resulted from the warmer climate that occurred from the late 1980s which made possible the fateful encounter of P. quercivorus with Q. cripsula by allowing the beetle to extend its distribution to more northerly latitudes and higher altitudes. Future global warming will possibly accelerate the overlapping of the distributions of P. quercivorus and Q. crispula with the result that oak dieback in Q. crispula will become more prevalent in Japan.

scholarly journals A New Cytosporone Derivative from the Endophytic Fungus Cytospora sp

2014 ◽  
Vol 9 (7) ◽  
pp. 1934578X1400900 ◽  
Author(s):  
Tomoya Takano ◽  
Takuya Koseki ◽  
Hiromasa Koyama ◽  
Yoshihito Shiono
Keyword(s):  
Antimicrobial Activity ◽  
Endophytic Fungus ◽  
2D Nmr ◽  
Ambrosia Beetle ◽  
Oak Wilt ◽  
Tree Disease ◽  
Platypus Quercivorus ◽  
Mass Spectral ◽  
Screening Study ◽  
Raffaelea Quercivora

Japanese oak wilt (JOW) is a tree disease caused by the fungus Raffaelea quercivora, which is vectored by the ambrosia beetle, Platypus quercivorus. In a screening study of the inhibitory active compounds from fungi, a new cytosporone analogue, compound 1, was isolated from the endophytic fungus Cytospora sp. TT-10 isolated from Japanese oak, together with the known compounds, integracin A (2), cytosporones N (3) and A (4). Their structures were determined by extensive 1D– and 2D–NMR spectroscopic and mass spectral analyses. Compound 1 was identified as 4,5-dihydroxy-3-heptylphthalide and named cytosporone E. Compounds 2 and 3 showed antimicrobial activity against Raffaelea quercivora.

scholarly journals Seasonal Emergence and Flight Behavior of the Oak Ambrosia Beetle Platypus quercivorus along an Altitudinal Gradient in the High Elevation Areas

2019 ◽  
Vol 101 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Tomoko Fukuzawa ◽  
Ryosuke Arai ◽  
Hiroshi Kitajima ◽  
Masahiko Tokoro ◽  
Mineaki Aizawa ◽  
...  
Keyword(s):  
Altitudinal Gradient ◽  
High Elevation ◽  
Ambrosia Beetle ◽  
Flight Behavior ◽  
Platypus Quercivorus

Analysis of Oak Tree Mortality to Predict Ambrosia Beetle Platypus quercivorus Movement

2016 ◽  
Vol 62 (4) ◽  
pp. 377-384 ◽  
Author(s):  
Michimasa Yamasaki ◽  
Takayuki Kaneko ◽  
Atsushi Takayanagi ◽  
Makoto Ando
Keyword(s):  
Tree Mortality ◽  
Ambrosia Beetle ◽  
Platypus Quercivorus ◽  
Oak Tree

scholarly journals Draft Genome Sequence of Raffaelea quercivora JCM 11526, a Japanese Oak Wilt Pathogen Associated with the Platypodid Beetle, Platypus quercivorus

2016 ◽  
Vol 4 (4) ◽  
Author(s):  
Hayato Masuya ◽  
Ri-ichiroh Manabe ◽  
Moriya Ohkuma ◽  
Rikiya Endoh
Keyword(s):  
Genome Sequence ◽  
Draft Genome ◽  
Mass Mortality ◽  
Ambrosia Beetle ◽  
Draft Genome Sequence ◽  
Oak Wilt ◽  
Platypus Quercivorus ◽  
Japanese Oak Wilt ◽  
Raffaelea Quercivora

The Japanese oak wilt pathogen Raffaelea quercivora and the platypodid beetle, Platypus quercivorus , cause serious mass mortality of Quercus spp. in Japan. Here, we present the first draft genome sequence of R. quercivora JCM 11526 to increase our understanding of the mechanism of pathogenicity and symbiosis with the ambrosia beetle.

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