미호강 수계 생물막의 환경유전자를 이용한 담수해파리 (Craspedacusta sowerbii Lankester, 1880) 유전자 탐색

서지정보

ㆍ발행기관 : 한국하천호수학회 ㆍ수록지정보 : 생태와 환경 / 56권 / 3호
ㆍ저자명 : 김건희, 조현진, 김정희, 양윤모, 주현지, 정현기

목차

서 론
재료 및 방 법
1. 조사 지역 및 환경유전자 (environmental DNA) 채집
2. 환경유전자 meta-barcoding 분석 및 유전자 계통 분석
결과 및 고 찰
1. 미호강 유역의 생물막 (biofilm)에 존재하는COI 유전자 다양도 분석
2. 담수해파리의 COI 유전자 분석
결 론
적 요

영어 초록

Freshwater jellyfish, a type of jellyfish exclusively found in freshwater, has a limited number of species but is found globally. However, their ecology and causes of occurrence are largely unknown. Therefore, understanding the distribution of polyps, which produce the larvae of freshwater jellyfish, can provide important data for comprehending their ecology. This study aims to explore the COI gene of freshwater jellyfish using environmental DNA from the microbial film in the Miho River system. Among the 12 survey points in the Miho River watershed, genetic material of freshwater jellyfish was detected in 8 points, mainly located upstream near reservoirs. These genetic materials were identified as genes of the well-known freshwater jellyfish species, Craspedacusta sowerbii. Notably, the C. sowerbii genes found in the Miho River watershed survey points were closely related to a species previously discovered in Italy. Consequently, utilizing environmental DNA to explore the genetic traces of freshwater jellyfish enables rapid screening of areas with a high likelihood of freshwater jellyfish occurrence. This approach is deemed to provide crucial information for understanding the distribution and ecology of freshwater jellyfish in Korea.

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