초록

AI-Helper

서해의 겨울철 우점종인 흰베도라치(Enedrias (Pholis) fangi) 치자어는 베도라치(Enedrias nebulosus), 베도라치류(Enedrias spp.), 황줄베도라치(Pholis taczanowskii), 뱅어류(Protosalanginae) 등으로 분류되었다. 이 종들의 치자어의 대부분은 흰베도라치 (Enedrias fangi)로 밝혀졌다. 이 종의 치자어는 서해 전해역에 분포하는데, 3월경에는 전남북 근해, 4월에는 충남 연근해, 5,6월에는 경기 연근해에 주로 분포한다. 이 종의 주 산란기는 겨울철인 11~1월, 산란은 서해 전역에서 이루어지는 것으로 추정된다. 치자어의 평균 성장률은 0.33/일, 전자어기에서 치어기 중기까지는 부유생활을 하며 체장이 40mm이상이 되는 치어 후기부터 저층에서 서식하기 시작하는 것으로 보이며 체장이 60~70mm정도로 성장한 후 황해 저층냉수역으로 회유하는 것으로 추정된다. 서해 연근해에서 1985~1991년에 어획된 흰베도라치 치어자원의 어획량은 연평균 5,000M/T으로 우리 나라 전체 흰베도라치 치자어 어획량의 99% 이상이며, 주 어획시기는 충남이 5월, 경기 연근해에서는 6월로 나타났다.

Abstract ▼ AI-Helper

The larval fish, which had been previously identified or classified as Enedrias (Pholis) nebulosus, Enedrias spp., Pholis taczanowskii, and unidentified species belonging to Protosalanginae, were revealed as that of a gunnel, Enedrias fangi. This species has been known as a cold water species mainly...

The larval fish, which had been previously identified or classified as Enedrias (Pholis) nebulosus, Enedrias spp., Pholis taczanowskii, and unidentified species belonging to Protosalanginae, were revealed as that of a gunnel, Enedrias fangi. This species has been known as a cold water species mainly caught in the Yellow Sea. Larval E. fangi showed peak abundances in the coastal waters off Chonlla Province in March, Chungnam Province in April, and Kyunggi Province in May and June. The primary spawning season of E. fangi seemed to be winter (November to January), and the eggs hatched after 60 days from spawning. The average growth rate of larval fish was about 0.33mm/day. The larval fish of 40mm in body length began to move to the bottom, and stayed in the bottom cold water mass when their body length was greater than 60-70mm. The average annual catches of larval E. fangi from 1985 to 1991 were 5,000M/T in the Yellow Sea, which were more than 99 % of the total gunnel catches around Korean waters. The peak season of catches was from March or April to July in Chungnam Province, and from May to July in Kyunggi Province.