가. 생식주기 조사
$\circ$ 득량만 키조개 집단의 산란기는 6월
나. 어미성숙관리 기술개발
$\circ$ 성성숙 유도에 적절한 수온은 ${23^{\circ}C}$, 먹이생물은 Tetrαselmis tstrathele이 적합함.
다. 채란 및 난발생 조사
$\circ$ 채란은 저염분 노출, ${4^{\circ}C}$냉장 2시간, 자외선 조사 해수, 수온상승(${5^{\circ}C}$$\uparrow$) 효과적임
$\circ$ 난 발생시 최적 수온은 ${25^{\circ}C}$, 염분은 30 psu 였음.
라. 유생사육관리 기술개발
$\circ$ 초기유생 먹이로서는 lsochrysis galbana 이후 다양한 미세조류를 섭취함.
$\circ$ 염분농도는 30 psu, 수온은 25~${28^{\circ}C}$이 적합함.
$\circ$ 유수식 유생사육 기법으로 침착치패 생산에 성공하였음.
Abstract
▼
Comb pen shell, Atrina pectinata mainly inhabits the South and the West Sea areas, such as Deungnyang Bay, Yeoja Bay, Boryeong and Seocheon. Of the shell species inhabiting Korea, comb pen shell is the largest. The adductor muscle is a high value-added strategic export item, which is salted and drie
Comb pen shell, Atrina pectinata mainly inhabits the South and the West Sea areas, such as Deungnyang Bay, Yeoja Bay, Boryeong and Seocheon. Of the shell species inhabiting Korea, comb pen shell is the largest. The adductor muscle is a high value-added strategic export item, which is salted and dried or frozen for export to Japan. However, production rapidly drops due to decrease in the amount of resources. Under the circumstances, supply of seeds for farming are entirely dependent on natural seeds because artificial seed production techniques are yet to be established. Therefore, it is keenly required to establish artificial seed production techniques for stable supply of seeds for farming. Accordingly, broodstock maturation management, spawning and larvae breeding techniques were established by stages and development of techniques has been continuously promoted in order to achieve stability in the comb pen shell farming industry.
Investigation on Reproduction Cycle
For investigation on the broodstock reproduction cycle, 50 samples were collected monthly from the coastal areas of Deungnyang Bay. Then, investigation was conducted on morphological characters, body index, gonad somatic index (GSI), donad index (GI), histological gonad development stage. Results of investigation on morphological characters indicated that the monthly average shell length was 24.2 ~ 26.7 em and average body weight was 352.8-584.7 g. As for the weight of gonad including digestive glands, it peaked at 59.2 g on May and then rapidly dropped to the lowest at 8.3 g on August. In terms of body index, females indicated the highest value of 0.147 on April and the lowest of 0.101 on September. Males indicated the highest value of 0.145 on April and the lowest of 0.104 on June. In terms of GSI, females indicated the highest value of 25.47 on May. Then, after a rapid fall, the lowest index of 5.02 was recorded on August. As for males, it was the highest at 24.5 on May and the lowest at 4.62 on August. In terms of GI, both females and males displayed gradual increase from November to reach the highest value for the year of 4.00 on May. On June, the index rapidly dropped and females and males displayed the lowest values for the year of 0.50 and 0.46 respectively. After the lowest, there was the trend of slight increase in the index. As for histological gonad development stage, results of histological analysis indicated that the development stages could be divided into the 5 stages of quiescent phase, early activation phase, latter activation phase, maturation phase and spent & ripe phase. Female comb pen shells passed through the early activation phase in October - February and entered maturation phase on April. Then, the spent & ripe phase was on July. As for males, the early activation phase was in October - March followed by maturation phase in April - May. Then, spent & ripe phase started from June. As a result of analysis on body index, GSI, GI and histological development stage, it was concluded that the spawning season of comb pen shell in Deungnyang Bay of Jangheung-gun in Jeollanam-do was June.
목차 Contents
- 표지 ...1
- 보고서 요약 ...4
- 요약문 ...6
- SUMMARY ...9
- 목차 ...14
- 그림목차 ...17
- 표목차 ...18
- 제1장 연구개발 과제의 개요 ...20
- 제2장 국내외 기술개발 현황 ...21
- 제1절 국내 기술개발 현황 ...21
- 제2절 국외 기술개발 현황 ...21
- 제3절 향후 전망 ...21
- 제3장 연구개발 수행 내용 및 결과 ...23
- 제1절 생식주기 조사 ...23
- 1. 서론 ...23
- 2. 재료 및 방법 ...23
- 2.1 어미확보 및 사육관리 ...23
- 2.2 어미 생식주기 조사 ...23
- 3. 결과 및 고찰 ...24
- 3.1 어미확보 및 사육관리 ...24
- 3.2 어미 생식주기 조사 ...24
- 제2절 어미 성숙관리 기술개발 ...28
- 1. 서론 ...28
- 2. 재료 및 방법 ...28
- 2.1 자연해수 어미 성숙관리 ...28
- 2.1.1 채란 ...28
- 2.1.2 난 발생 ...28
- 2.1.2.1 수온별 난 발생 시험 ...28
- 2.1.2.2 염분별 난 발생 시험 ...28
- 2.2 저온해수 어미 성숙관리 1차 ...28
- 2.2.1 어미성숙 관리 ...28
- 2.2.2 채란 ...29
- 2.3 저온해수 어미 성숙관리 2차 ...29
- 2.3.1 어미성숙관리 ...29
- 2.3.2 채 란 ...29
- 2.4 미세조류별 어미 성숙관리 ...29
- 2.5 수온별 어미 성숙관리 ...29
- 3. 결과 및 고찰 ...30
- 3.1 자연해수 어미 성숙관리 ...30
- 3.1.1 채 란 ...30
- 3.1.2 난 발생 ...30
- 3.1.2.1 수온별 난 발생 ...30
- 3.1.2.2 염분별 난 발생 ...31
- 3.2. 저온해수 어미성숙관리 1차 ...31
- 3.2.1 어미성숙관리 ...31
- 3.2.2 채란 ...31
- 3.3 저온해수 어미성숙관리 2차 ...32
- 3.3.1 채란 ...32
- 3.4 미세조류별 어미성숙관리 ...33
- 3.4.1 비만도 ...33
- 3.4.2 생식소의 조직학적 발달단계 ...34
- 3.4.3 미세조류에 따른 성성숙 유도율 ...37
- 3.4.4 채란 ...37
- 3.5 수온별 어미성숙관리 ...38
- 3.5.1 사육환경 ...38
- 3.5.2 생식소 지수 ...38
- 3.5.3 조직학적 발달단계 ...39
- 3.5.4 성성숙 ...41
- 3.5.5 산란유발 ...41
- 3.5.6 채란 ...42
- 제3절 유생사육관리 기술개발 ...43
- 1. 서론 ...43
- 2. 재료 및 방법 ...43
- 2.1 에어 공급별 유생사육 시험 ...43
- 2.2 수온별 유생사육 시험 ...43
- 2.3 염분별 유생사육 시험(1차) ...43
- 2.4 먹이생물별 유생사육 시험(1차) ...43
- 2.5 자연치패 서식지 미세조류 종조성 조사 ...43
- 2.6 미세조류별 유생사육 시험(2차) ...44
- 2.7 염분별 유생사육 시험(2차) ...44
- 2.8 먹이생물별 유생사육 시험(3차) ...44
- 2.9 유생질병 모니터링 ...45
- 2.10 인공종묘 생산기술 개발 ...45
- 3. 결과 및 고찰 ...45
- 3.1 에어 공급별 유생사육 시험 ...45
- 3.2 수온별 유생사육 시험 ...46
- 3.3 염분별 유생사육 시험(1차) ...46
- 3.4 먹이생물별 유생사육 시험(1차) ...47
- 3.5 자연치패 서식지 미세조류 종조성 조사 ...49
- 3.6 먹이생물별 유생사육 시험(2차) ...50
- 3.7 염분별 유생사육 시험(2차) ...50
- 3.8 먹이생물별 유생사육 시험(3차) ...50
- 3.9 유생질병 모니터링 ...51
- 3.10 인공종묘 생산기술 개발 ...51
- 제4장 목표달성도 및 관련분야에의 기여도 ...53
- 가. 목표달성도 ...53
- 나. 관련분야 기여도 ...54
- 제5장 연구개발결과의 활용계획 ...55
- 제6장 참고문헌 ...56
※ AI-Helper는 부적절한 답변을 할 수 있습니다.