Takuma Takanashi

Takuma Takanashi
Forestry and Forest Products Research Institute | FFPRI · Tohoku Research Center

PhD

About

83
Publications
16,433
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Introduction
Takuma Takanashi currently works at the Department of Forest Entomology , Forestry and Forest Products Research Institute. Takuma does research in Bioacoustics and Applied Entomology. Their most recent publication is 'Vibrations in hemipteran and coleopteran insects: behaviors and application in pest management'.
Additional affiliations
October 2005 - present
Forestry and Forest Products Research Institute
Position
  • Chief Researcher

Publications

Publications (83)
Article
Egg clutches of many animals hatch synchronously due to parental control [1, 2] or environmental stimulation [3, 4]. In contrast, in some animals, embryos actively synchronize their hatching timing with their siblings to facilitate adaptive behavior in sibling groups, such as mass migration [5, 6]. These embryos require synchronization cues that ar...
Article
Many groups of insects utilize substrate-borne vibrations for communication. They display various behaviors in response to vibrations in sexual and social communication and in predator–prey interactions. Although the number of reports on communication and behaviors using vibrations has continued to increase across various insect orders, there are s...
Preprint
Full-text available
Managing pests with insecticides is probably the most conventional available control method. However, insecticide overuse often results in resistance and subsequent pest resurgence, and often adversely affects the ecosystem. The physical management of insect pests by utilizing substrate-borne vibrations, sounds, or both is increasingly attracting a...
Chapter
Many insects demonstrate immobility, such as death feigning (tonic immobility) and freeze responses in the context of interactions within and between species. Immobility is induced by environmental information, including substrate vibrations generated by predators or conspecifics. In this chapter, we review immobility induced by vibrations in the o...
Article
Plautia stali Scott(Hemiptera: Pentatomidae)is widely distributed in Japan. Plautia stali damages fruit trees, and the primary control method is to spray insecticides based on monitoring and predicting the abundance of P. stali. Plautia stali overwinters and develops in coniferous trees and then flies to orchards. In this study, we aimed to disrupt...
Article
Some caterpillars produce sounds to startle or warn predators by rubbing the mandibles together or forcing air through the abdominal spiracles/oral cavity (Bura et al. 2016). Sound production through larval abdominal spiracles (i.e., whistling) has been reported in two closely related moth groups (Bura et al. 2016), hawkmoths (Sphingidae) and wild...
Article
Communication using substrate-borne vibrational signals is common in hemipteran insects. In the present study, we recorded the electrophysiological responses of the peripheral vibratory receptor neurons in the legs of the brown-winged green bug, Plautia stali Scott(Hemiptera: Pentatomidae). We recorded vibration-induced spike potentials using tungs...
Article
Full-text available
Spraying a calcium carbonate suspension “White Coat” on the fruit of apples significantly suppresses the oviposition of the peach fruit moth, Carposina sasakii. In gas chromatography (GC) with an electroantennographic detector analysis, adult female antennae showed responses to three compounds that were identified as 2,2,4-trimethyl-1,3-pentanediol...
Article
We demonstrate that vibrations carried in a food substrate induced escape behavior in the larvae of the sap beetle pest, Phenolia (Lasiodite) picta (MacLeay)(Coleoptera: Nitidulidae), which infests Japanese apricot fruits. Accelerations of continuous vibrations from 8 to 32 m/s² at a frequency of 120 Hz within 30 min induced escape behavior in 60%...
Article
Full-text available
Vertebrates and insects are phylogenetically separated by millions of years but have commonly developed tympanal membranes for efficiently converting airborne sound to mechanical oscillation in hearing. The tympanal organ of the field cricket Gryllus bimaculatus, spanning 200 μm, is one of the smallest auditory organs among animals. It indirectly l...
Article
In this study, we demonstrate that substrate-borne vibrations induced tonic immobility or startle responses in the adults of the sap beetle Phenolia(Lasiodites)picta(MacLeay). Most of the tonic immobility and startle responses were induced by large accelerations of vibrations with 8.0 and 16.0 m/s² at frequencies of 60 and 120 Hz. We also observed...
Article
Caterpillars (i.e. lepidopteran larvae) have evolved multiple defences against predators, with some large caterpillars showing aggressive defences (e.g. strikes and/or sound production). Although such behaviours can startle or warn vertebrate predators, defences against invertebrates remain unclear. We investigated the behavioural responses of the...
Article
Physiological mechanisms of irreversible hydraulic dysfunction in seedlings infected with pine wilt disease (PWD) are still unclear. We employed cryo-scanning electron microscopy (cryo-SEM) to investigate the temporal and spatial changes in water distribution within the xylem of the main stem of 2-year-old Japanese black pine seedlings infested by...
Article
Full-text available
Background: Plant-dwelling beetles overcome challenging attachment hurdles by means of ellaborated, tarsal attachment devices, which are frequently equipped with hairy adhesive pads. While the tarsal functional morphology has been intensively studied in leaf and ladybird beetles during the last decades, longhorn beetles (Cerambycidae) have been wid...
Article
Full-text available
Hemipteran insects use sophisticated vibrational communications by striking body appendages on the substrate or by oscillating the abdominal tymbal. There has been, however, little investigation of sensory channels for processing vibrational signals. Using sensory nerve stainings and low invasive confocal analyses, we demonstrate the comprehensive...
Article
Full-text available
Background Vibrational senses are vital for plant-dwelling animals because vibrations transmitted through plants allow them to detect approaching predators or conspecifics. Little is known, however, about how coleopteran insects detect vibrations. ResultsWe investigated vibrational responses of the Japanese pine sawyer beetle, Monochamus alternatus...
Article
Full-text available
In social insects, local interactions among colony members facilitate information transfer, and allow the whole colony to regulate division of labor and task allocation in an integrated and coordinated manner. In particular, regulation of caste differentiation in response to external cues is important for sustaining social insect colonies. The soci...
Article
Induction of alternative mating tactics by surrounding conditions, such as the presence of conspecific males, is observed in many animal species. Satellite behaviour is a remarkable example in which parasitic males exploit the reproductive investment by other males. Despite the abundance of parasitic mating tactics, however, few examples are known...
Article
Using echolocation influenced by Doppler shift, bats can capture flying insects in real three-dimensional space. On the basis of this principle, a model that estimates object locations using frequency modulated (FM) sound was proposed. However, no investigation was conducted to verify whether the model can localize flying insects from their echoes....
Article
Many insects utilize substrate-borne vibrations as a source of information for recognizing mates or predators. Among various substrates, plant leaves are commonly used for transmitting and receiving vibrational information. However, little is known about the utilization of vibrations by leaf-dwelling insects, especially coleopteran beetles. We cond...
Article
Full-text available
Active echolocation enables bats to orient and hunt the night sky for insects. As a counter-measure against the severe predation pressure many nocturnal insects have evolved ears sensitive to ultrasonic bat calls. In moths bat-detection was the principal purpose of hearing, as evidenced by comparable hearing physiology with best sensitivity in the...
Article
Many insects form groups through interactions among individuals, and these are often mediated by chemical, acoustic, or visual cues and signals. In spite of the diversity of soil-dwelling insects, their aggregation behaviour has not been examined as extensively as that of aboveground species. We investigated the aggregation mechanisms of larvae of...
Article
Male sexually-selected traits often impose an increased risk of predation on their bearers, causing male-biased predation. We investigated whether males of the sap-feeding Japanese rhinoceros beetle Trypoxylus dichotomus were more susceptible to predation than females by comparing the morphology of beetles caught in bait traps with the remains of b...
Article
Full-text available
Ultrasonic mating signals in moths are argued to have evolved via exploitation of the receivers' sensory bias towards bat echolocation calls. We have demonstrated that female moths of the Asian corn borer are unable to distinguish between the male courtship song and bat calls. Females react to both the male song and bat calls by "freezing", which m...
Article
Using the echolocation, bats can capture insects in real 3D space. Bats can accurately localize these objects from echoes by emitting the frequency modulation sound. The object's range could be estimated from delay times between the emitted sound and echoes from objects. In the case of flying insects, the echoes were influenced by Doppler shift, th...
Article
This study investigated the potential of a fluorescein-5 isothiocyanate conjugated-chitin-binding domain (FITC-CBD) probe to detect chitinous materials in the peritrophic membrane (PM) structure of the Japanese pine sawyer beetle, Monochamus alternatus. Results through direct observations indicated that the fluorescent probe specifically bound to c...
Article
Full-text available
It is argued that animal signals may have evolved so as to manipulate the response of receivers in a way that increases the fitness of the signallers. In deceptive communication, receivers incur costs by responding to false signals. Recently, we reported that pupae of the soil-inhabiting Japanese rhinoceros beetle Trypoxylus dichotoma produce vibra...
Article
Full-text available
Pupae of some insects produce sounds or vibrations, but the function of the sounds/vibrations has not been clarified in most cases. Recently, we found vibratory communication between pupae and larvae of a group-living beetle Trypoxylus dichotoma, which live in humus soil. The vibratory signals produced by pupae were shown to deter approaching larva...
Article
Although generation of ultrasound during courtship has been reported for an increasing number of moth species, the effect of the ultrasound on mating remains uncertain in many cases because of a lack of proper verification. Here we report that males of the yellow peach moth Conogethes punctiferalis (Crambidae) sexually communicate with females by e...
Article
Full-text available
Pupae of several insect species are known to generate air-borne sounds and/or substrate-borne vibrations, but the functions of the sounds/vibrations are not well understood. Here, we present the first evidence of vibratory communication between pupae and larvae of a group-living Japanese rhinoceros beetle Trypoxylus dichotoma which inhabits humus s...
Chapter
Studies on biomimetics of biological interactions in agricultural ecosystems are expected to create more sound sustainable technologies for plant protection over a long term. We are trying to develop effective strategies to enhance plant immune systems by using insect-produced elicitors and to control behaviors of insect pests by using acoustic inf...
Data
Amino acid sequences of B. xylophilus INS-like proteins. (XLS)
Data
Full-text available
Gene orders of mitochondrial DNAs of B. xylophilus and C. elegans. Arrows indicate the direction of transcription of genes. The genomes contain 12 protein-coding genes (atp6, cob, cox1-3, nad1-6 and 4L), two rRNA genes (rrnS and rrnL), tRNA genes (circles with one letter codes to indicate transferred amino acid) and non-coding region (AT). Note tha...
Data
Full-text available
Distribution of the three major gene ontology categories assigned to B. xylophilus. Predicted genes can have more than one GO term. The x axis indicates the percentage of the term compared to the total of the terms. (PDF)
Data
Maximum likelihood tree of SRT family chemoreceptor proteins in B. xylophilus and C. elegans. The phylogenetic tree was built using MEGA5. The scale bar indicates number of amino acid changes per site. Bootstrap values more than 50% were shown in the tree. (PDF)
Data
Full-text available
Accuracies of gene predictions by ab-initio methods and combined by EVidenceModeler (EVM). Gene prediction accuracy was calculated at the nucleotide, exon, and complete gene level using 200 manually curated gene models as references. Label Augustus, Snap and Genemark.hmm represent ab-initio gene predictions by each predictor. EVMall, which is the c...
Data
Full-text available
GST classifications in B. xylophilus and C. elegans. Full-length GSTs containing both conserved N and C domains are classified into the classes. GST phylogeny tree is reconstructed according to Zimniak & Singh [91]. (PDF)
Data
B. xylophilus novel putative secreted proteins. (DOC)
Data
Full-text available
Chromosome numbers of B. xylophilus and B. mucronatus. B. xylophilus (Ka4C1 line) chromosome was observed to be 2n = 12. Bar = 2 µm. (PDF)
Data
Full-text available
Unrooted phylogenetic tree of GH45 proteins. Amino acid sequences of GH45 proteins in CAZy website (www.cazy.org) were retrieved from uniprot. The maximum likelihood phylogenetic tree was made using Phylogeny.fr (www.phylogeny.fr) using default setting. Proteins with short lengths or with long branches in the preliminary tree were removed from anal...
Data
Signalling pathways involved in phase II enzyme expression. The XREP-1/DDB-1/CUL-4 complex (red), the DAF-2 pathway (green), and glycogen synthase kinase (yellow) negatively regulate SKN-1 (dark blue), whereas the p38 MAPK pathway (light blue) positively regulates SKN-1. The relationships among these pathways are not clear. When animals are exposed...
Data
Full-text available
Phylogenetic tree of 16 gustatory receptors. The phylogenetic tree was built by maximum likelihood method according to MEGA5 based on the JTT matrix-based model with uniform rate. Three proteins of B. xylophilus, (GUR-1, -2 and -3 indicated with bold) proteins of nematodes C. elegans, C. remanei, C. briggsae (GUR indicated with red), and proteins o...
Data
Full-text available
Maximum likelihood tree of STR superfamily chemoreceptor proteins in B. xylophilus. The phylogenetic tree was built by maximum likelihood using MEGA5. All 5 families (Str, Srd, Srh, Sri and Srj) from Str superfamilies of B. xylophilus were included in the tree. The scale bar indicates number of amino acid changes per site. Bootstrap values more tha...
Data
Supplementary text – Detailed Result. (DOC)
Article
Full-text available
Bursaphelenchus xylophilus is the nematode responsible for a devastating epidemic of pine wilt disease in Asia and Europe, and represents a recent, independent origin of plant parasitism in nematodes, ecologically and taxonomically distinct from other nematodes for which genomic data is available. As well as being an important pathogen, the B. xylo...
Article
Using the echolocation, bats can capture insects in real 3‐D space. The echoes from the insect were changed with the wing beats and its orientation. In the case of emitting the constant‐frequency (CF) sound, the wing beats could be estimated from the amplitude modulation and frequency modulation(FM) dependent on the Doppler‐shift. In this study, th...
Data
Courtship ultrasound of Ostrinia furnacalis. The ultrasound was slowed down 10 times. The oscillogram of the ultrasound is shown in Fig. 2C. (0.05 MB WAV)
Data
Courtship ultrasound of Z-type Ostrinia scapulalis (Morioka). The ultrasound was slowed down 10 times. The oscillogram of the ultrasound is shown in Fig. 2B. (0.05 MB WAV)
Data
Courtship ultrasound of Z-type Ostrinia nubilalis (Darmstadt). The ultrasound was slowed down 10 times by down-sampling of the recorded sound to make it audible to the human ear. The oscillogram of the ultrasound is shown in Fig. 2A. (0.05 MB WAV)
Article
Full-text available
Moths use ultrasounds as well as pheromones for sexual communication. In closely related moth species, variations in ultrasounds and pheromones are likely to profoundly affect mate recognition, reproductive isolation, and speciation. The European corn borer, Ostrinia nubilalis, and its Asian congeners, Ostrinia furnacalis and Ostrinia scapulalis, e...
Article
Males of the Asian corn borer moth Ostrinia furnacalis (Guenée) produce an ultrasonic courtship song of extremely low-intensity during copulation attempts. The song has been shown to significantly increase the mating success of the male; however, the mode of action of the sound in courtship remains to be resolved. Behavioural experiments using pair...
Article
Full-text available
It has been proposed that intraspecific ultrasonic communication observed in some moths evolved, through sexual selection, subsequent to the development of ears sensitive to echolocation calls of insectivorous bats. Given this scenario, the receiver bias model of signal evolution argues that acoustic communication in moths should have evolved throu...
Article
Full-text available
Ultrasonic hearing is widespread among moths, but very few moth species have been reported to produce ultrasounds for sexual communication. In those that do, the signals are intense and thus well matched for long distance communication. By contrast, males of the Asian corn borer moth (Crambidae) were recently shown to whisper extremely low-intensit...
Article
Full-text available
Sound-producing moths have evolved a range of mechanisms to emit loud conspicuous ultrasounds directed toward mates, competitors and predators. We recently discovered a novel mechanism of sound production, i.e., stridulation of specialized scales on the wing and thorax, in the Asian corn borer moth, Ostrinia furnacalis, the male of which produces u...
Article
Full-text available
Termites communicate with their nestmates using various types of behaviors. Some of them shake themselves back and forth/right and left, or bump their head or abdomen against the nestwalls. In this study, we focused on tremulation (especially back and forth movement) and tapping behaviors (head bumping) in four species of termites (Coptotermesformo...
Article
Full-text available
Insects have evolved a marked diversity of mechanisms to produce loud conspicuous sounds for efficient communication. However, the risk of eavesdropping by competitors and predators is high. Here, we describe a mechanism for producing extremely low-intensity ultrasonic songs (46 dB sound pressure level at 1 cm) adapted for private sexual communicat...
Article
The olfactory responses of adult males and females of the fruit-piercing moth, Oraesia excavata, to lactones as specific components among ripe peach fruit odors were recorded by electroantennogram (EAG) techniques and trap captures in the field. Six lactones (gamma-hexalactone, gamma-octalactone, delta-octalactone, gamma-decalactone, delta-decalact...
Article
Full-text available
Male moth pheromone-detecting receptor neurons are known to be highly specific and very sensitive. We investigated physiological and behavioral responses to female sex pheromone components in male Ostrinia furnacalis moths (Lepidoptera: Crambidae). Using recordings from a cut-sensillum technique, trichoid sensilla could be grouped into four physiol...
Article
Full-text available
Although sex pheromone communication in the genus Ostrinia (Lepidoptera: Crambidae) has been studied intensively, acoustic communication in this genus has not been explored. In this study, we report that male-produced ultrasound serves as a courtship song in the Asian corn borer moth, O. furnacalis. Upon landing close to a pheromone-releasing femal...
Article
Sexual communication in many moths occurs between females emitting a sex pheromone and males responding to it. Females of Ostrinia scapulalis (Lepidoptera: Crambidae) show a large variation in blend ratios of the two sex pheromone components (E)- and (Z)-11-tetradecenyl acetates. E type females produce a pheromone with a high percentage of (E)-11-t...
Article
The sex pheromone of Ostrinia orientalis (Lepidoptera: Crambidae) was analyzed by gas chromatography–electroantennographic detection (GC–EAD), GC–mass spectrometry and a series of bioassays. Three EAD-active compounds were detected in the female sex pheromone gland extract, and identified as tetradecyl acetate (14:OAc), ( Z)-11-tetradecenyl acetate...
Article
Sex ratio distortion toward females (SR trait), induced by a Wolbachia bacterium, has been reported in two species of the Ostrinia furnacalis group, viz., O. furnacalis, and O. scapulalis (Lepidoptera: Crambidae). In addition, an SR trait caused by abacterial, unidentified agent(s) is known in O. scapulalis. Here we examined the SR trait in four ot...
Article
The adzuki bean borer, Ostrinia scapulalis, has distinct genetic variation in the blend of two sex pheromone components, (E)- and (Z)-11-tetradecenyl acetates. This variation is largely controlled by a single autosomal locus with two alleles, E and Z. E-type (EE) females produce a pheromone with a mean E:Z ratio at 99:1 whereas Z-type (ZZ) and I-ty...
Article
Individual analysis of the female sex pheromone of the adzuki bean borer, Ostrinia scapulalis, has shown that the sex pheromone of this species comprised (E)-11-tetradecenyl acetate (E11-14:OAc) and (Z)-11-tetradecenyl acetate (Z11-14:OAc) at variable blend ratios. The pheromone blend could be tentatively categorized into three types with respect t...