Applied Microscopy

  • 제37권4호
  • /
  • Pages.231-238
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  • 2007
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  • 2287-5123(pISSN)
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  • 2287-4445(eISSN)
한국현미경학회 (Korean Society of Microscopy)
권호 표지

고운까막노래기(Oxidus gracilis) 안테나 감각모의 미세구조

Fine Structure of the Antennal Sensilla of the Millipede Oxidus gracilis(Polydesmida: Paradoxomatidae)

  • 정경훈 (한남대학교 생명나노과학대학 생명과학과) ;
  • 문명진 (단국대학교 첨단과학대학 생물학과, 기초과학연구소)
  • Chung, Kyung-Hwun (Department of Biological Sciences, Hannam University) ;
  • Moon, Myung-Jin (Department of Biological Sciences & Institute of Basic Science, Dankook University)
  • 발행 : 2007.12.31
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초록

고운까막노래기(Oxidus gracilis) 안테나 표면에 형성된 감각기관과 감각모의 미세구조적 특성을 규명하기 위하여 주사전자현미경(FESEM)을 이용하여 관찰하였다. 안테나는 8개의 마디로 이루어져 있었으며, 큐티클의 표면에는 화학적 및 기계적 감각을 담당하는 다양한 종류의 감각기들이 형성되어 있었다. 고운까막노래기 안테나에서는 기본적으로 대형의 원추말단 감각기(AC)와 3종류의 감각모-모상 감각모(Cs), 관상 감각모(Ts), 추상 감각모(Bs)-가 구분되었다. 원추말단 감각기는 말단마디인 제8 마디에 4개가 형성되어 있었고, 끝이 날카로운 모상 감각모와 관상 감각모는 말단 마디를 제외한 모든 마디에 분포되어 있었다. 추상 감각모는 제5 마디부터 제7 마디까지의 원위 말단부에 형성된 큐티클 함몰부에서만 관찰되는데, 그 미세구조적 특성에 따라 다시 3종류로 구분되었다. 길이가 긴 제1형($Bs_1$)은 제5 마디에만 분포되어 있었고, 길이가 짧은 제2형($Bs_2$)은 제5 마디 및 제6 마디에, 그리고 가시 모양의 제3형($Bs_3$)은 제7 마디에만 분포되어 있음이 확인되었다.

Although the biological significance of the antennal sensillae to millipedes are widely understood, the structure and function of the antennal sensillae are still not clear and more precise analysis is required. Thus, this study initiate to reveal the fine structural characteristics of various sensory receptors on the antennae of millipede Oxidus gracilis were observed with field emission scanning electron microscopy(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 sensillae in O. gracilis as follows: apical cone sensilla, trichoid sensilla, chatiform sensilla and basiconic sensilla. The most prominent is four large spital cone sensillae on distal tip of the 8th article. Both of trichoid and chaetiform sensillae are abundantly observed at the most of antennal articles. These sharply pointed structures are inclined and slightly curved toward the apex of the sensilla. The basiconic sensilla are further divided into three subtypes: large basiconic sensilla($Bs_1$), small basiconic sensilla($Bs_2$) and spiniform 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 7th articles, respectively.

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