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Original Articles

Morphology of Plocamium cartilagineum (Plocamiales, Rhodophyta) from Korea

한국산 홍조류 가는곱슬이(Plocamium cartilagineum)의 형태분류학적 고찰

Sun Ju Lee1
,
Myung Sook Kim12*
이 선주1
,
김 명숙12*
1Department of Biology, Jeju National University, Jeju 63243, Korea
2Research Institute of Basic Sciences, Jeju National University, Jeju 63243, Korea
1제주대학교 생물학과
2제주대학교 기초과학연구소
*Corresponding Author
31 December 2022. pp. 59-68
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Abstract

The red algal genus Plocamium occurs in the world from tropical area to the cold temperate region, as well as in the Northwest Pacific. In Korea, there are six species of the genus Plocamium reported. Among them Plocamium cartilagineum (Linnaeus) P. S. Dixon inhabits on rocky substrate in the intertidal zone with extreme morphological variation. We compared the morphology of P. cartilagineum from Netherlands (Europe) as a type locality to Korean entity in order to investigate taxonomic identity. The size of the thallus from Netherlands was about twice as large as that of the Korean specimen. Futhermore, we noticed the differences in the morphology of tetrasporangial stichidia, size of cystocarp, and the width of lower branchlet between two entities. In addition, the specimens of P. cartilagineum collected from the eastern and southern coast of Korea show the different characteristics in habit and size of lower branchlet. Based on this result, we conclude that additional morphological and molecular phylogenetic studies are required to recognize as natural entities and to resolve a taxonomic status of P. cartilagineum from Korea.

Keywords
Korea
Morphology
Plocamium
P. cartilagineum
Rhodophyta
Taxonomy

홍조식물 곱슬이속은 열대에서 추운 온대지역까지 널리 분포하고 주로 조하대 암반에서 생육하며 한국에는 6종이 보고되었다. 그 중에서 가는곱슬이(Plocamium cartilagineum)는 한국의 동해, 남해, 제주도에 분포하는데 생육환경에 따른 형태 변이로 인하여 종의 정확한 동정이 어렵다. 따라서 본 연구는 한국산 가는곱슬이를 대상으로 연속 편생지 내 소지의 수, 기저소지의 형태와 크기, 낭과와 사분포자탁을 기준으로 하여 주요 식별형질의 종내 형태 변이를 관찰하였다. 그 결과 기준생육지인 유럽산(네덜란드)은 한국산 가는곱슬이에 비해 엽상체의 크기가 2배 정도 더 크며, 그 외에 사분포자탁의 형태와 낭과 및 기저소지의 크기에서 차이를 보였다. 또한 한국 동해안의 엽상체는 남해안의 개체들 보다 크기가 작고 주축의 폭이 넓으며 기저소지가 짧은 특징을 나타내었다. 본 연구의 결과를 바탕으로 한국산 가는곱슬이의 정확한 분류학적 위치확립을 위하여 향후, 추가적인 형태분석을 포함한 분자계통학적 연구가 필요하다.

키워드
가는곱슬이
곱슬이속
분류
한국
형태
홍조류
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Information
  • Publisher :The Korean Society of Phycology
  • Publisher(Ko) :한국조류학회
  • Journal Title :Aquatic Nature
  • Journal Title(Ko) :수생생물
  • Volume : 2
  • No :2
  • Pages :59-68
  • Received Date : 2022-11-09
  • Revised Date : 2022-12-06
  • Accepted Date : 2022-12-07
  • DOI :https://doi.org/10.23135/an.2022.2.2.2
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