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작성일 : 2021-09-08
작성자 : 김진구
요 약
2019년 12월
한국 남해에서 봉고네트로 채집된 둥글넙치과 후기자어 1개체를 형태 분석한 결과, Crossorhombus azureus로 확인되었다. 추가적으로
미토콘드리아 DNA COI 546 bp 염기서열을 분석한 결과, C.
azureus 성어와 1.7% 유전적 차이를 보였고, 같은 속의 C. kobensis 및 C. howensis와는 각각 19.6%, 23.8%로
상대적으로 매우 큰 유전적 차이를 보였다. 본 종의 새로운 속명 및 국명으로 각각 “둥글넙치속”과 “파랑둥글넙치”를
제안한다.
Abstract
A single postlarva (9.72 mm in standard length) specimen of Crossorhombus
azureus (Alcock, 1889) belonging to the family Bothidae, was collected
using a bongo net from the southern sea of Korea on December 10, 2019. This
species is characterized by having spines on post basipterygial processes. It
has two eyes located at the opposite side in head, which accordingly belongs to
pre-metamorphosis stage. Melanophores are distributed on the dorsal and anal
fin base on the right side (blind side), which is regarded as a useful
identification key distinguishing C. azureus from congeneric
species in their postlarval stage. A molecular analysis based on mitochondrial
DNA COI sequences showed that our specimen was closely matched to adult C.
azureus (K2P distance = 0.017). As there is no Korean name for the
genus Crossorhombus in spite of presence of Crossorhombus
kobensis and its Korean name “Go-be-dung-geul-neob-chi” in Korea, we
proposed a new Korean name “Dung-geul-neob-chi-sog” for the genus Crossorhombus and “Pa-lang-dung-geul-neob-chi” for the
species C. azureus.
Keywords: Crossorhombus azureus, Bothidae, Postlarva, First record