Stand‐level distribution and movement of <i>Platypus quercivorus</i> adults and patterns of incidence of new infestation

Esaki, Kojiro; Kato, Kenryu; Kamata, Naoto

doi:10.1111/j.1461-9563.2004.00206.x

Cited by 36 publications

(19 citation statements)

References 19 publications

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“…Platypus quercivorus flies to a new host tree from the tree it infested the previous year (Esaki et al 2004). NFM for a focal tree is, therefore, greatly affected by its surroundings, including how many nearby trees were infested in the previous year or how far it is from infested trees.…”

Section: Discussionmentioning

confidence: 99%

A low Platypus quercivorus hole density does not necessarily indicate a small flying population

Yamasaki

Iwatake

Futai

2007

Journal of Forest Research

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The ambrosia beetle Platypus quercivorus causes mass mortality of Fagaceae trees in Japan, and tree species differ in their susceptibility to P. quercivorus. We hypothesized that interspecific differences in susceptibility are caused by differences in beetle infestation patterns, that is, how many beetles fly to a tree and how many of those arriving bore holes. To examine how tree susceptibility is related to these parameters, two tree species with different degrees of susceptibility were studied (highly susceptible Quercus crispula and less susceptible Q. salicina). Specifically, we measured the number of male beetles per unit area that flew to the host trees (NFM) and the density of holes bored by male beetles (DH). From these two values, we calculated the proportion of male beetles flying to a host tree that bored holes (PBM). These parameters were compared for the two Quercus species. Although the two species did not differ in NFM in 2003, PBM was markedly lower for Q. salicina than for Q. crispula and DH was significantly lower for Q. salicina than for Q. crispula.Thus, the lower susceptibility of Q. salicina is partly explained by its low PBM.

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Section: Discussionmentioning

confidence: 99%

A low Platypus quercivorus hole density does not necessarily indicate a small flying population

Yamasaki

Iwatake

Futai

2007

Journal of Forest Research

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“…cuspidate var. sieboldii) (Kamata et al 2002;Esaki et al 2004), and Castanea crenata (Kobayashi and Ueda 2005). In particular, Q. crispula is seriously affected by the disease on Honshu Island, Japan (Shiomi and Osaki 1997;Nishigaki et al 1998).…”

Section: Introductionmentioning

confidence: 97%

Types of frass produced by the ambrosia beetlePlatypus quercivorusduring gallery construction, and host suitability of five tree species for the beetle

Tarno

Endoh

et al. 2011

Journal of Forest Research

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We studied the biology of the ambrosia beetle Platypus quercivorus in the logs of five tree species to determine: (1) the relationship between the amount of frass produced by beetles and tunnel length, (2) the relationship between frass shape and the morphological characteristics of P. quercivorus mouthparts, and (3) the suitability of five tree species for P. quercivorus reproduction. Five logs each from healthy Quercus crispula, Q. serrata, Castanea crenata, Sorbus japonica, and Cryptomeria japonica trees were used in this experiment. The results showed that there was a linear relationship between the amount of frass and tunnel length. Whenever powdery frass was produced, larvae were found in the gallery in the log, while fibrous frass was present only in galleries that contained just adults. The mouthparts of adults were completely sclerotized, which likely accounts for the fibrous frass production. Host preference of P. quercivorus was examined at two stages using five tree species. The first stage is digging initiation, which concerns male preference for digging a tunnel. More holes were made by males on S. japonica and Q. serrata logs, while fewer holes were made on C. japonica logs. The second stage is characterized by female orientation, mating, and progeny development. Platypus quercivorus could complete its lifecycle only in the two Quercus spp.

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“…In addition, holes on surface of stem produced galleries inside of stem with complicated pattern (Sone et al, 1998). In Japan, ambrosia beetle P. quercivorus is known to be associated with ambrosia fungi, Raffaelea quercivora (Esaki et al, 2004;Kinuura and Kobayashi, 2006). Ambrosia beetles including Euplatypus parallelus, P. quercivorus, and P. koryoensis commonly produce frass (Moon et al, 2008b;Tarno et al, 2011;Tarno et al, 2014).…”

Section: Resultsmentioning

confidence: 99%

NEW RECORD OF THE AMBROSIA BEETLE, Treptoplatypus micrurus Schedl. ATTACK ON SONOKEMBANG (Pterocarpus indicus Willd.) IN BATU, INDONESIA

2015

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Sonokembang (Pterocarpus indicus Willd.) is commonly planted as an ornamental tree in Batu city, East Java. In 2012 and 2013, there were some dying trees of sonokembang along the road of Batu city, and there were some indications that the signs and symptoms might be related to the ambrosia beetle samples from Batu. To clarify the precise condition, identification of beetle samples was needed in this research. Based on survey and sample collections conducted in Batu from the early July 2013 to the end of March 2014, characteristic of damage on trees was observed together with the presence of beetle collected. Identification was based on morphological characters such as posterior elytral declivities and body size of male, and mycangia on female`s pronotum. Based on the morphological characters, there were some special characters which described such as 1) the body size of female adult was bigger than male adult, 2) elytral declivities on male adult was unique, and 3) there was mycangia on pronotum of female adults. Morphological characters showed that the ambrosia beetle attacked on sonokembang belonged to Treptoplatypus micrurus Schedl. This ambrosia beetle species seems to be the responsible agent that caused dying trees of sonokembang.

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Stand‐level distribution and movement of Platypus quercivorus adults and patterns of incidence of new infestation

Cited by 36 publications

References 19 publications

A low Platypus quercivorus hole density does not necessarily indicate a small flying population

A low Platypus quercivorus hole density does not necessarily indicate a small flying population

Types of frass produced by the ambrosia beetlePlatypus quercivorusduring gallery construction, and host suitability of five tree species for the beetle

NEW RECORD OF THE AMBROSIA BEETLE, Treptoplatypus micrurus Schedl. ATTACK ON SONOKEMBANG (Pterocarpus indicus Willd.) IN BATU, INDONESIA

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