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논문 상세정보

황복, Takifugu obscurus의 초기 발달 동안 성장 및 생존에 있어 먹이와 염분의 효과

Effect of Food and Salinity on Larval Growth and Survival of the River Puffer, Takifugu obscurus

초록

본 연구에서는 황복, T. obscurus의 초기발달동안 자치어의 성장과 생존에 미치는 먹이 종류와 염분별 영향을 조사하였다. 먹이별 실험에서는 Artemia공급 시기인 부화 25일의 자어를 이용해 Artemia (대조구)와 5가지의 먹이 (실지렁이, 물벼룩, 바지락육질, 배합사료, 곤쟁이)를 30일간 혼합 공급하여 실험구별 성장과 생존율을 비교하였다 염분별 실험에서는 일령 15일 자어(전장 5.8$\pm$0.4 mm: Stage I), 일령 36일 치어(전장 12.0$\pm$0.2 mm: Stage II) 및 일령 70일 치어(전장 44.5$\pm$0.7mm: Stage III)를 대상으로 4개의 염분 농도구(0, 10, 20 및 30 psu)를 설정하여 성장과 생존을 비교분석하였다. 먹이실험 결과, 성장도는 배합사료, 실지렁이, 물벼룩 공급구들이 비교적 양호하게 나타났으나, 생존율은 물벼룩 공급구가 가장 높게 나타났으며, 빠른 성장을 보였던 배합사료와 실지렁이 혼합 공급구는 오히려 낮은 생존율을 나타내었다. 염분별 실험에서는 Stage I 경우 성장에 있어 염분별 뚜렷한 차이를 찾아 볼 수 없었으나, 생존율은 10∼20 psu구에서 높게 나타났다. 또한 Stage II의 경우 성장과 생존 모두 10∼20 psu에서 양호하였으며, Stage III에서는 0∼30 psu의 모든 염분 조건에서 정상적인 성장과 생존을 나타내었다.

Abstract

In the present study, we investigated the effects of food and salinity on growth and survival of river puffer, Takifugu obscurus offsprings in indoor land-based tank during the early development. In the food experiment, the river puffer larvae (TL 8.7$\pm$0.1 mm, BW 20.0$\pm$3.2 mg) were fed with tubificid, Limnodrilus gotoi, water flea, Daphnia carinata, mysid, Neomysis awatschensis, Manila clam, Ruditapes philippinarum and artificial food together Artemia nauplii for 30 days, and the growth and the survival of larvae were investigated. In the salinity experiment, the river puffer larvae and juvenile at three stages (Stage I: TL 5.8$\pm$0.4 mm; Stage II: TL 12.0$\pm$0.2 mm, Stage III: TL 44.5$\pm$0.7 mm) were supplied with Artemia nauplii, water flea and/or artificial food and were reared in 0, 10, 20 and 30 psu at respective stages. The results shows that the growth rates of larvae feeding with artificial food and tubificid together Artemia nauplii were higher than those of larvae in other groups, but the survival rates of larvae feeding with water flea and mysid together Artemia nauplii were higher than those of larvae in other groups. In salinity, the results shows that the growth and survival rates of offsprings were significantly higher in 10∼20 psu than those in 0 and 30 psu at Stage I and n. At Stage III, the growth and the survival rates were the highest in 20 psu, but the lowest in 0 psu. However, it should be noted that the rates in 0 and 30 psu were significantly enhanced at Stage III in comparison with those at Stage I and II. Therefore, it is concluded that river puffer, T. obscurus is euryhaline marine species, which can normally grow and live at salinities from 0 to 30 psu, and that a combinative supplement with Artemia nauplii and water flea, D. carinata may confer an advantage on growth and survival of the river puffer offsprings in indoor land-based tank.

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이 논문을 인용한 문헌 (2)

  1. Kang, Hee-Woong ; Jun, Je-Cheon ; Kang, Duk-Young ; Jo, Ki-Che ; Choi, Ki-Ho ; Kim, Gyu-Hee 2009. "Influence of Low Salinity and Cold Water Temperature on the Hatching, Survival and Growth of the Offspring of Grunt, Hapalogenys nitens" Korean journal of Ichthyology = 한국어류학회지, 21(3): 158~166 
  2. Yang, Sang Geun ; Ji, Seung Cheol ; Moon, Tae Seok ; Kim, Kyung Min ; Jeong, Min Hwan 2013. "Effects of Water Temperature, Photoperiod and Population Density on Oxygen Consumption in the Longtooth Groper Epinephelus bruneus" 한국수산과학회지 = Korean journal of fisheries and aquatic sciences, 46(2): 195~200 

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