Spatial distribution of a flying ambrosia beetle Platypus quercivorus (Coleoptera: Platypodidae) at the stand level

Igeta, Yutaka; Esaki, Kojiro; Kato, Kenryu; Kamata, Naoto

doi:10.1303/aez.2004.583

Cited by 23 publications

(7 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Within natural forests, intense P. quercivorus flight activity occurs close to the ground (up to 2.5 m above soil level) (Igeta et al 2004), and beetle attacks are concentrated on basal parts of trees (Hijii et al 1991). Because it was difficult to count all beetles that flew to a tree and all holes that they bored, we restricted monitoring of NFM, NFF, and NH to the area up to 50 cm above ground.…”

Section: Study Site and Tree Speciesmentioning

confidence: 99%

Discrimination among host tree species by the ambrosia beetlePlatypus quercivorus

Yamasaki

Futai

2012

Journal of Forest Research

View full text Add to dashboard Cite

The ambrosia beetle Platypus quercivorus is a vector for the fungus that causes Japanese oak wilt, and susceptibility to infestation by P. quercivorus varies by tree species. We postulated that P. quercivorus discriminates among host tree species differing in susceptibility to attack. To test this postulate, we counted the number of flying male beetles (NFM), the number of holes bored by male beetles (NH), and the number of flying female beetles (NFF) per unit area of bark surface in three fagaceous tree species: Quercus crispula (with high susceptibility to infestation) and Q. serrata and Castanea crenata (both with low susceptibility). NFM and NH were used to calculate the proportion of male beetles that bored holes out of those that flew to the tree (PBM). We used generalized additive models to predict NFM, NFF, and PBM. The locations of trees, expressed as x and y coordinates, numbers of weeks after the first male beetle's flying (WEEK), diameters of trees 130 cm above ground (DBH), and tree species (SP) were incorporated into the models as candidate explanatory variables. The best-fit models for NFM and NFF included WEEK and DBH and the effect of location; SP was not included in the models. For PBM, the best-fit model included WEEK, DBH, and SP. The results indicate that male P. quercivorus prefer Q. crispula to Q. serrata and C. crenata and that selection is made before boring holes on trees, but that P. quercivorus do not discriminate among host species when they fly to trees.

show abstract

Section: Study Site and Tree Speciesmentioning

confidence: 99%

Discrimination among host tree species by the ambrosia beetlePlatypus quercivorus

Yamasaki

Futai

2012

Journal of Forest Research

View full text Add to dashboard Cite

show abstract

“…Timing is important for P. quercivorus in field tests using semiochemicals. The spatial distribution of brood trees that were killed by JOW in the previous year ) and spatial variations in light conditions (Igeta et al 2003(Igeta et al , 2004) are also important factors influencing trap captures. Traps that were deployed near brood trees or near the forest edge captured many P. quercivorus.…”

Section: Discussionmentioning

confidence: 99%

Field trap test for bioassay of synthetic (1S,4R)-4-isopropyl-1-methyl-2-cyclohexen-1-ol as an aggregation pheromone of Platypus quercivorus (Coleoptera: Platipodidae)

Kamata

Esaki²,

Mori

et al. 2008

Journal of Forest Research

Self Cite

View full text Add to dashboard Cite

An ambrosia beetle, Platypus quercivorus, is a vector of Japanese oak wilt, which causes massive mortality of oak trees in Japan. Previous studies have identified (1S,4R)-4-isopropyl-1-methyl-2-cyclohexen-1-ol ((-)-IMCH) as the major component of the aggregation pheromone of P. quercivorus. We tested the ability of synthetic (-)-IMCH to attract P. quercivorus adults. The synthetic compound attracted 14.4 times as many P. quercivorus, of both sexes, as control traps. Control and (-)-IMCH-baited traps both captured 3.32 times as many males as females, probably because of the nature of Lindgren funnel traps and of male-biased emergence sex ratio early in the season of adult flights. (-)-IMCH was proved to be a major component of the aggregation pheromone of P. quercivorus.

show abstract

“…This body section also contains powerful muscles that operate both the wings and legs. Beetles fly from hostile environments, escape enemies and seek mates over wide areas Igeta et al . 2004).…”

Section: Discussionmentioning

confidence: 99%

External microstructure of the ambrosia beetle Platypus koryoensis (Coleoptera: Curculionidae: Platypodinae)

Moon

Park

et al. 2008

Entomological Research

View full text Add to dashboard Cite

Platypus koryoensis is a minute ambrosia beetle found in forests. It can cause significant economic damage to oak trees. Recently in Korea, it has been reported as a major pest of oak trees, because it causes sooty mold of oak by introducing the pathogenic fungus Raffaelea sp. In this paper, we demonstrate the fine structural aspects of the external body of the ambrosia beetle using field emission scanning electron microscopy, as a part of basic research into this pest so that strategies for its control might be developed. This beetle has a sensory system well developed to respond to both visual and chemical stimuli. Both sexes have a pair of faceted compound eyes and a pair of knobbed antennae, but simple eyes are absent. The mouthparts on its distinct snouts are effective devices for penetration and for boring holes. The mouthparts consist of the labrum, a pair of mandibles, a pair of maxillae and the labium. Both the maxillary and the labial palpi have the function of directing the food to the mouth and holding it while the mandibles chew the food. The distal ends of these palpi are flattened and have shovel-like setae. The thorax has a particularly hard exoskeleton and hard elytra, including powerful muscles that operate both the wings and the legs. The legs are multi-segmented and have a strong femur and tibia, including one pair of claws on the end of each tarsal segment. Characteristically, both male and female beetles have mycangial cavities for storing spores and other microorganisms, but only females have three pairs of large depressions on their dorsal thorax.

show abstract

Spatial distribution of a flying ambrosia beetle Platypus quercivorus (Coleoptera: Platypodidae) at the stand level

Cited by 23 publications

References 10 publications

Discrimination among host tree species by the ambrosia beetlePlatypus quercivorus

Discrimination among host tree species by the ambrosia beetlePlatypus quercivorus

Field trap test for bioassay of synthetic (1S,4R)-4-isopropyl-1-methyl-2-cyclohexen-1-ol as an aggregation pheromone of Platypus quercivorus (Coleoptera: Platipodidae)

External microstructure of the ambrosia beetle Platypus koryoensis (Coleoptera: Curculionidae: Platypodinae)

Contact Info

Product

Resources

About