Evaluation of larval growth process and bamboo consumption of the bamboo powder-post beetle Dinoderus minutus using X-ray computed tomography

Watanabe, Hiroki; Yanase, Youichi; Fujii, Yoshihisa

doi:10.1007/s10086-014-1458-3

Cited by 15 publications

(17 citation statements)

References 5 publications

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“…The powderpost beetle (Dinoderus minutus) which is the main destructive agent of bamboo [27], and other xylophagous organisms, such as decay fungi and termites, can seriously affect its structural integrity and consequently compromise the service life of the resulting structures or constructive systems [26,28]. Additionally, flammability, the volume variation due to water absorption, and the susceptibility to chemical degradation are other problems that hinder their use in some applications [29,30].…”

Section: Introductionmentioning

confidence: 99%

Effect of disodium octaborate tetrahydrate on the mechanical properties of Dendrocalamus asper bamboo treated by vacuum/pressure method

2019

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The chemical treatments applied to some lignocellulosic resources commonly used as building materials can influence their mechanical performance during service, and hence, this effect should be studied for structural safety reasons. In this piece of work, prismatic samples of Dendrocalamus asper bamboo were treated in a vacuum/pressure process with disodium octaborate tetrahydrate (DOT) solutions and the corresponding mechanical performance was compared with non-treated and water-treated samples. Full penetration of boron was achieved, with DOT retentions of 14.79 kg m −3 and 21.79 kg m −3 for 5% and 8% (wt/wt%) solutions, respectively. Dynamic modulus of elasticity (MOE), static MOE, and compressive modulus of elasticity of the material, with values between 23.3-24.0, 15.9-16.2, and 26.2-27.2 GPa, respectively, were statistically equivalent for all the analyzed treatment conditions. However, a significant influence of the treatment could be observed on the specific compressive strength of bamboo, showing an increase of 35.3% for the 5% solution and 30.6% for the 8% solution. Although without statistical difference among the treatments, similar behavior was observed on the specific modulus of rupture (MOR) under flexural loading, with an increase of up to 10.1% in relation to the reference for the treated samples. The results achieved in the present study from nondestructive excitation pulse, three-point bending, and axial compression tests demonstrated that mechanical behavior of bamboo was preserved or even enhanced by the proposed treatments based on disodium octaborate tetrahydrate.

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Section: Introductionmentioning

confidence: 99%

Effect of disodium octaborate tetrahydrate on the mechanical properties of Dendrocalamus asper bamboo treated by vacuum/pressure method

2019

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“…We previously utilized X-ray computed tomography (CT) to nondestructively trace the growth and tunneling of D. minutus larvae inside infested bamboo pieces over time, and reported that the developmental stages (larva, prepupa, pupa, and adult) were clearly distinguishable in the CT images and their bamboo consumption was assessed quantitatively [8]. However, because we were unable to locate eggs or newly hatched larvae, the complete process of egg-to-adult development could not be determined.…”

Section: Introductionmentioning

confidence: 99%

Nondestructive evaluation of egg-to-adult development and feeding behavior of the bamboo powderpost beetle Dinoderus minutus using X-ray computed tomography

2017

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The life history and feeding biology of the bamboo powderpost beetle Dinoderus minutus remain poorly understood because the beetles' oviposition, development, and feeding take place inside bamboo culms. In this study, X-ray computed tomography (CT) was employed to nondestructively quantify the progression of larval body size and tunnel size from the first instar to pupation. Eggs of D. minutus laid between laminates of nutrient-containing filter paper were easily collected. The newly hatched larvae were inoculated singly into pieces of internodes of madake (Phyllostachys bambusoides). The pieces were scanned using a microfocus X-ray CT system every 3-5 days to visualize the beetles' bodies and tunnels with resolutions of 18-60 lm/voxel. CT scans were continued after adult eclosion to analyze pre-mating adult feeding. The collected eggs were 0.84 ± 0.06 mm (mean ± SD) in length and the egg duration lasted 5.0 ± 0.8 days. Based on CT images, the larvae grew to 3.53 ± 0.23 mm in body length and turned into pupae of 3.42 ± 0.09 mm. The larvae bored tunnels with a length of 80.2 ± 4.8 mm and a volume of 68.0 ± 7.0 mm 3 over the larval period of 61 ± 11 days. Newly emerged adults remained in the bamboo pieces to feed before making exit holes in 8 ± 1 days after adult eclosion. During this period, they bored tunnels at rates of 2.64 ± 0.58 mm/day in length and 4.87 ± 1.10 mm 3 /day in volume.

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“…We reported previously that the developmental stages of D. minutus were clearly distinguishable in images obtained by X-ray computed tomography (CT) and their bamboo consumption was assessed quantitatively [9]. We then traced the egg-to-adult development and tunneling process and quantified the growing body size and extending tunnel size in the entire larval period, with the aid of nutrient-containing filter paper for egg collecting [10].…”

Section: Introductionmentioning

confidence: 99%

Continuous nondestructive monitoring of larval feeding activity and development of the bamboo powderpost beetle Dinoderus minutus using acoustic emission

2017

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The life history and feeding biology of the bamboo powderpost beetle Dinoderus minutus remain poorly understood because the beetles' oviposition, development, and feeding take place inside bamboo culms. In this study, acoustic emission (AE) monitoring was applied for continuous nondestructive analysis of larval feeding activity and development from the first instar to adult eclosion. Newly hatched larvae were inoculated individually into pieces of madake (Phyllostachys bambusoides) culms. AE hits were recorded using single AE sensors fixed onto the bamboo pieces. Generation of AE hits indicated that larval feeding activity had begun after inoculation. Based on the time course of the hourly AE hit rate, the larvae were feeding constantly during each instar, and feeding activity only ceased during periods of ecdysis and pupation. Half of the individuals examined underwent seven instars and the other half underwent eight instars. The time course of AE hit rate per 5 min exhibited periodic cycles, where continuous meals were separated by inactive phases of ca. 5 min, with an average dominant period of each instar ranging between 0.76 and 2.19 h. After correcting the AE data based on distance attenuation of AE waves, the tendency that AE amplitude increased as the larvae developed through ecdysis events became more apparent. AE monitoring continued after adult eclosion, and the feeding activity of the newly emerged adults continued almost ceaselessly during the Reifungsfrass period.

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Evaluation of larval growth process and bamboo consumption of the bamboo powder-post beetle Dinoderus minutus using X-ray computed tomography

Cited by 15 publications

References 5 publications

Effect of disodium octaborate tetrahydrate on the mechanical properties of Dendrocalamus asper bamboo treated by vacuum/pressure method

Effect of disodium octaborate tetrahydrate on the mechanical properties of Dendrocalamus asper bamboo treated by vacuum/pressure method

Nondestructive evaluation of egg-to-adult development and feeding behavior of the bamboo powderpost beetle Dinoderus minutus using X-ray computed tomography

Continuous nondestructive monitoring of larval feeding activity and development of the bamboo powderpost beetle Dinoderus minutus using acoustic emission

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