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2024 Vol.29, Issue 4 Preview Page

Article

New Record of Three Entomoneis Species from Namhae in Korea

국내 남해군에서 새로 발견된 Entomoneis 3종

BYEOL KIM1
,
BYOUNGSEOK KIM1
,
SOYEON KIM1
,
JEONGYUNG JIN1
,
JONG-GYU PARK2*
김 별1
,
김 병석1
,
김 소연1
,
진 정융1
,
박 종규2*
1Graduate Student, Department of Oceanography, Kunsan National University, Gunsan 54150, Korea
2Professor, Department of Marine Biology, Kunsan National University, Gunsan 54150, Korea
1국립군산대학교 해양학과 대학원생
2국립군산대학교 해양생물자원학과 교수
*Corresponding Author
30 November 2024. pp. 163-171
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Abstract

The diatom genus Entomoneis Ehrenberg 1845 currently has 35 species reported in AlgaeBase, and 8 species in Korea. Samples were collected from Namhae-gun in February and Seogwipo-si in April 2023, and three species of Entomoneis previously unrecorded in Korea were newly found: E. annagodheae, E. centrospinosa, and E. punctulata. E. annagodheae is characterized by a fascia, a hyaline area of thickened silica extending from the central area. E. centrospinosa has 0-3 spines on each side of central nodule, and punctulata has partially arcuate junction line that does not continue to the entire cell. E. annagodheae and E. punctulata have not been studied for their genetic sequences so far, but the rbcL sequence was obtained through this study. Since species of Entomoneis have very similar morphologies, using a light microscope is not sufficient to confirm differences between species. Observing the ultrastructure of diatom frustules with an electron microscope is necessary for species classification. This study analyzes the morphological characteristics using a light microscope and a scanning electron microscope (SEM), and shows the results of the rbcL sequence (E. annagodheae, E. punctulata). This will provide basic data for future studies on Entomoneis in Korea.

Keywords
Bacillariophyceae
Entomoneis
Benthic diatom
New records
SEM

규조류 속 Entomoneis Ehrenberg 1845는 현재 AlgaeBase에 35종, 국내에는 8종이 보고되어 있다. 2023년 2월 남해군, 4월 서귀포시에서 채집한 시료에서 Entomoneis 미기록종 3종을 새롭게 발견하였다: E. annagodheae, E. centrospinosa, E. punctulata. E. annagodheae는 세포 내부 중앙에 규각이 두껍게 발달한 fascia가 있고, E. centrospinosa는 central nodule 양쪽으로 0-3개의 가시가 있으며, E. punctulata는 세포 전체로 이어지지 않는 짧은 아치형의 junction line을 가진다. E. annagodheae와 E. punctulata는 보고된 유전자 염기서열 결과가 없지만 본 연구에서 rbcL 염기서열을 얻었다. Entomoneis 종들은 형태적으로 매우 유사하여 광학현미경으로 종간 차이를 명확히 확인하기 어려우므로 종 분류를 위해 전자현미경으로 규각의 미세구조를 관찰할 필요가 있다. 본 연구에서는 광학, 전자현미경을 통해 형태 특성을 분석하고, rbcL 염기서열 결과(E. annagodheae, E. punctulata)를 제공한다. 이는 추후 국내 Entomoneis 연구에 기초자료를 제공할 것이다.

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Information
  • Publisher :The Korean Society of Oceanography
  • Publisher(Ko) :한국해양학회
  • Journal Title :The Sea Journal of the Korean Society of Oceanography
  • Journal Title(Ko) :한국해양학회지 바다
  • Volume : 29
  • No :4
  • Pages :163-171
  • Received Date : 2024-11-08
  • Revised Date : 2024-11-22
  • Accepted Date : 2024-11-22
  • DOI :https://doi.org/10.7850/jkso.2024.29.4.163
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