• Title/Summary/Keyword: 감각기

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Structure of sensilla on the Antenna and Mouthparts of the Oriental Tobacco Budworm(Heliothis assulta Guenee) Larvae (담배나방의 유충의 촉각 및 구기 감각기의 구조)

  • 박순식;부경생
    • Korean journal of applied entomology
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    • v.27 no.2
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    • pp.94-102
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    • 1988
  • Studies were carried out to describe the structure and distribution of various sensilla on the antenna and mouthparts of the Oriental tobacco bud worm (H. assulta) larvae by light and scanning electron microscopy. The larval antenna has 3 segments. The second segment has 2 hairs and 3 pegs, while the third segment shows 3 regular pegs and a segmented peg (styloconicum type). Each mandible bears 2 aporous hairs on the lateral surface. The labrum bears 12 aporous hairs on its external surface. and 6 aporous hairs, 4 coeloconica-like sensilla and 2 campaniformia-like sensilla on its epipharynx. The stipes has 3 hairs, and the galea has 3 pegs. 2 papillae and 2 domes. The maxillary palpus has only a digitiform sensillum on its 1st segment but 11 sensilla of 4 different types on its 2nd segment. Maxillary sensilla represent almost 70% of total number of larval sensilla on the mouthparts. Labial pal pus has a single segment bearing a large segmented uniporous peg and a small peg. Finally their possible fun¬ctions were suggested.

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Structure of Antennal Sensilla on the Adult Asian Ladybird, Hamonia axyridis Pallas (Coleoptera: Coccinellidae) (무당벌레(Harmonia axyridis)성충 더듬이에 분포하는 감각기의 구조)

  • Park, Soo-Jin;Oh, Hyun-Woo;Youn, Young-Nam;Park, Ho-Yong
    • Applied Microscopy
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    • v.31 no.1
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    • pp.91-99
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    • 2001
  • The antennal sensilla of the adult male and female ladybird beetle, Harmonia axyridis (Coleoptera: Coccinellidae) were examined by scanning electron microscopy. Nine types of sensilla were characterized and grouped into 5 morphological classes: $B\ddot{o}hm$, basiconic, chetiform, coeloconlc, and trichoid sensilla. $B\ddot{o}hm$ sensilla were localized on the scape and pedicel, part of the ventral and dorsal proximal side. This placement suggests a role in proportion of antennal position and movement. Basiconic and chetiform sensilla were divided into 3 subtypes by morphology and length differences. Trichoid sensilla are confined to the last 2 flagellum segments on both sexes. Sexual dimorphism of antennal sensilla is limited to the three types of difference. The principal characteristics of this dimorphism are the following: a) The distribution of sensilla was differ from male and female in antennae. b) Males exhibit coeloconic sensilla not present in females; c) Females posses more trichoid sensilla than males. The possible role of specific dilference of the sensilla in intersexual communication is discussed.

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Ultrastructure of Antennal Sensilla on American leafminer, Liriomhyza trifolii (Diptera: Agromyzidae) (아메리카잎굴파리(Liriomyza trifolii) 촉각에 분포하는 감각기의 외부미세구조 및 형태적 특징)

  • Shin, Hyun-Jin;Seo, Mi-Ja;Youn, Young-Nam
    • Korean journal of applied entomology
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    • v.45 no.2 s.143
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    • pp.119-129
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    • 2006
  • The antennal receptors of the adult male and female of the American leafminer, Liriomyza trifolii (Diptera: Agromyzidae) was studied using the scanning electron microscopy. This antennal receptors were developed to accept the chemical or mechanical signal in the environment. The antennae of L. trifolii is 317.52 $\mu$m long and composed of the scape, pedicel, funicle, arista. Antennae located between compounds eye on the middle in the head. The result of SEM observation, four types of receptors were characterized and grouped into morphological classes: Trichoid, Basiconic, Coeloconic, Chetiform sensilla. Trichoid sensilla are located on the all segment. As a rule, female is more than male. This sensilla are long and slender hair with straight or slightly curved, and taper to a sharp point apically. Basiconic sensilla are observed only on the funicle. The number of basiconic sensilla in male and female are almost same in both sexes. This sensilla are long and thick hair with stright or slightly curved, and taper to a blunt point apically. Coeloconic sensilla are observed only on the funicle. This sensilla were showed a finger-like projections the peg apex. The number of basiconic sensilla in male and female are almost same in both sexes. Chetifarm sensilla are located on the all segment. This sensilla are needle-like, tapering sharply. Pedicel are more than scape. The number of Chetiform sensilla in male and female are almost same in both sexes.

Microstructure of the Antennal Sensory Organs in the Millipede Cawjeekelia pyongana (Polydesmida: Paradoxomatidae) (평안노래기 (Cawjeekelia pyongana) 안테나 감각기의 미세구조)

  • Chung, Kyung-Hwun;Moon, Myung-Jin
    • Applied Microscopy
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    • v.37 no.2
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    • pp.73-82
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    • 2007
  • The antennae of millipedes have a prominent function in detecting various types of environmental stimuli. The structural modification of the antennae is closely associated with the degree of sense recognition. Here we study functional morphology of the antennae of the millipede Cawjeekelia pyongana using field emission scanning electron microscope (FESEM). The antennae generally include eight segments, called articles. On the surface of the antennae, there are a variety of sensory receptors which include olfactory and mechanical receptors. We could identify four different types of antennal sensory organs in C. pyongana as follows: apical cone (Ac), trichoid sensilla (Ts), chaetiform sensilla (Cs) and basiconic sensilla (Bs). The most prominent of which is four APs at the 8th article. Both of the Is and the Cs are abundantly observed almost all of the antennal segments. They are long and strong bristles with longitudinal grooves acuminating toward the tip. The Bs is further divided into three subtypes: large basiconic sensilla $(Bs_1)$, small basiconic sensilla $(Bs_2)$ and spiniform basiconic sensilla $(Bs_3)$. The $Bs_1$ is located at the 5th and 6th articles, while the $Bs_2$ and $Bs_3$ can be seen at the 5th and at the 7th article, respectively.

The Effects of Sensory Integration Group Program on Praxis and Socialization for School-aged Children With Sensory Integration Dysfunction (그룹 감각통합치료가 학령기 감각통합장애 아동의 실행능력과 사회성 향상에 미치는 효과)

  • Kim, Eun-Young;Park, Yun-Yi;Kim, Kyeong-Mi
    • The Journal of Korean Academy of Sensory Integration
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    • v.7 no.2
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    • pp.37-47
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    • 2009
  • Objective : The aim of this study is to verify the effects of group sensory integrative intervention on praxis and socialization for school-aged children with sensory integration disorder. Method : The subjects are five children aged between 7 and 13 with sensory integration disorder. All children had participated in 26 sessions of group sensory integrative intervention. The Bruininks-Oseretasky Test of Motor Proficiency(BOT-2) and The Scale for Basic Socialized Function were used so as to evaluate the praxis and socialization. One group pretest-posttest design was used to verify the effect of group sensory integration(SI) intervention. The statistical difference between before and after the group SI intervention in the BOT-2, Scale for basic socialized function is tested by the Wilcoxon matched-pairs signed ranks test. Results : There is a significant difference in BOT-2(Z=-2.023, p=.043) and Scale for basic socialized function(Z=-2.023, p=.043) scores comparing pre-intervention with post-intervention. Conclusions : The results of this study showed that the group sensory integration intervention is effective in improving the praxis and socialization for school-aged children. However, it is difficult to generalize the conclusion because the number of subjects was limited and the environmental confounding factors had not been considered. Therefore, in the future research, it should supplement the aspect these limitations before applying the sensory integration intervention in order to suggest standard criteria for norm data.

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The Effect of Vestibular Sensory Integration on the Sensory Processing, Problem Behavior, and Auditory Behavior of Children With Cochlear Implants (전정감각 중심의 감각통합치료가 인공와우 수술 아동의 감각처리, 문제행동, 청각행동에 미치는 영향)

  • Park, Ye-Hyun;Kim, Hee
    • The Journal of Korean Academy of Sensory Integration
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    • v.19 no.1
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    • pp.13-23
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    • 2021
  • Objective : This study examined the effects of vestibular sensory integration on the sensory processing, problem behavior, and auditory behavior in children who had cochlear Implants. Methods : This single-subject AB study was conducted for 11 weeks from August to November 2019 with three children with cochlear implants. A pre-test measure of each child's sensory processing and auditory behavior was recorded with the baseline on operationally defined behavioral problems as four incidents during 40 minutes of free play with an occupational therapist. The treatment period was 15 40-minute sessions of vestibular sensory integration. Behavioral problems were monitored and recorded during each treatment session. Once treatment was complete, a post-test was conducted on the children's sensory processing and auditory behavior. Results : The sensory processing and auditory behavior of all three participants improved after the vestibular-focused sensory integration, and diverse problem behaviors showed decreasing trends during the interventions. Conclusion : Vestibular sensory integration leads to positive changes in the sensory processing, problem behavior, and auditory behavior of children with cochlear implants.

Distribution of Antennal Sensilla in Cotesia plutellae and Effect of Flagellectomy on Parasitism (프루텔고치벌(Cotesia plutellae)의 촉각 감각기 분포와 편절제거가 기생력에 미치는 영향)

  • Kim, Yong-Gyun;Park, Jung-A
    • Korean journal of applied entomology
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    • v.45 no.3 s.144
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    • pp.375-380
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    • 2006
  • A solitary endoparasitoid, Cotesia plutellae, parasitizes diamondback moth, Plutellae xylostella. It has been suggested that its antennae are a major sensory organ to search host and recognize host developmental and other physiological condition during parasitization. This research was performed to understand the parasitic behavior of C. plutellae by analyzing sensory types and their numbers on the antennae using scanning electron microscope. There was no significant difference in antennal length in both male and female C. plutellae, in which both sexes had 16 flagellomeres. Three different types of sensilla (trichoid, seta, and placodea sensilla) were located mostly on flagella and analyzed in their density on the different antennomeres. Trichoid sensillum was the major sensory type and showed about 87% density among all sensilla. Both trichoid and placodea types of sensilla exhibited even numbers on all flagellomeres with some decrease at terminal segments. In contrast, seta form of sensilla showed drastic increase in its density at distal part after 9th flagellomere. When distal half of flagellomeres were cut off, the C. plutellae could not parasitize host larvae. Even when only four distal flagellomeres were removed, the parasitism showed only 30%. These results indicate that C. plutellae antennae are required for parasitism and suggest that seta form of sensilla may play significant roles in recognizing host for parasitization.

The Study of Sensory Processing Skills in People with Intellectual Disabilities (지적 장애인의 감각처리능력에 관한 연구)

  • Jeong, Byoung-Lock
    • The Journal of the Korea Contents Association
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    • v.17 no.10
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    • pp.280-288
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    • 2017
  • The purpose of this study was to examine the sensory processing of adults with intellectual disabilities by Adolescent/Adult Sensory Profile(AASP). AASP was executed for 98 adults with intellectual disabilities residing in nursing home. The score of sensory processing ability expressed the conditions of being 'Less Than Most People' and 'Much Less Than Most People' in the all sensory processing areas of Low Registration, Sensory Sensitivity, Sensory Seeking, Sensory Avoiding. There was not significant difference in the sex. The score of sensory processing ability between teenagers(11 years to 17 years) and adult(above 18 years), teenagers statistically showed lower scores in the three sensory processing areas of Low Registration, Sensory Seeking, and Sensory Sensitivity. In addition, there was significant difference in the sensory processing areas of Low Registration and Sensory Avoiding according to the disability grading. In the future research, it is suggested to examine the sensory processing within residual setting and it need a study comparing sensory processing skills according to the disability grading by increasing subjects.

External Morphology of the American Leafminer, Liriomyza trifolii (Diptera: Agromyzidae), on Tomato with Scanning Electron Microscope (주사전자현미경을 이용한 토마토에 발생하는 아메리카잎굴파리(Liriomyza trifolii)의 외부형태적 특징)

  • Youn, Young-Nam;Kim, Ki-Duck;Park, Su-Jin;Kim, Nam-Sung;Seo, Mi-Ja;Chae, Soon-Yong
    • Korean Journal of Agricultural Science
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    • v.27 no.1
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    • pp.13-19
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    • 2000
  • The external morphology of male and female of Liriomyza trifolii (Burgess) was studied using the scanning electron microscopy (SEM). Three types of sensilla were identified on the funicle of antennae. The trichoid sensilla were most conspicious and distributed with a characteristic sharp structure at the apical end. Basiconic sensilla were showed distal curvature about $13{\mu}m$ long and $1.2{\mu}m$ to $1.4{\mu}m$ in diameter. Grooved sensilla were showed a finger-like projections at the peg apex. The function of these sensilla likely to be olfactory. The mouthparts were adapted for sucking food, and formed a elongate rostrum which was incorporated with labrum. The labrum was a small and flap-like shape. The slender and paired maxillary palp seemed to combine with each other lengthwise to long tube. The tarsus typically consisted of 5 segments, which might be variously modified, principally by thickening or flattening. The segment beared a pair of claws. Beneath the claws, there was a pair of pad-like pulvillia and a bristle-like median empodium. L. trifolii might secreted on the pulvillus and empodium an adhesive substance that enable them to cling to smooth surfaces. Male terminalia was complicated. The name 'aedeagus' seemed the best available general term for the copulatory organ, otherwise, female terminalia was usually relatively simple. This structure was reduced and formed a telescopic, eversible, and tubular ovipositor.

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External Ultrastructure of the Western Flower Thrips, Frankliniella occidentalis, with Scanning Electron Microscope (꽃노랑총채벌레(Frankliniella occidentalis)의 외부 미세구조의 특징)

  • Kim, Gi-Duck;Kim, Nam-Sung;Park, Soo-Jin;Seo, Mi-Ja;Chae, Soon-Yong;Youn, Young-Nam
    • Korean Journal of Agricultural Science
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    • v.26 no.2
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    • pp.8-12
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    • 1999
  • The external morphology of Frankliniella occidentalis was studied by using the scanning electron microscopy (SEM). The antenna was consisted of 8 segments and the length of antenna was 0.25mm. The 3rd segment and 4th segment were bent. The 5th segment and 6th segment had sensilla with $7{\mu}m$ long. The 8th segment had 8 sensilla. The mouthpart was protruded and distributed many sensilla on there. The leg had no claw.

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