Effects of the Different Anesthetic Doses of MS-222 and Lidocaine-HCl on the Blood Physiological Responses in Black Rockfish, Sebastes schlegeli

MS-222와 lidocaine-HCl의 농도별 마취에 대한 조피볼락(Sebastes schlegeli)의 혈액생리학적 반응

  • Kim Jae Ho (National Fisheries Research and Development Institute) ;
  • Hur Jun Wook (Department of Biological Sciences, University of Calgary) ;
  • Park In-Seok (Research Institute of Marine Science and Technology Korea Maritime University) ;
  • Kho Kang Hee (Division of Aqualife Science, Yosu National University) ;
  • Chang Young Jin (Department of Aquacuiture, Pukyong National University)
  • 김재호 (국립수산과학원) ;
  • 허준욱 (캘거리대학 생물학과) ;
  • 박인석 (한국해양대학교 해양과학기술연구소) ;
  • 고강희 (여수대학교 수산생명과학부) ;
  • 장영진 (부경대학교 양식학과)
  • Published : 2005.11.01

Abstract

Experiments were performed to investigate the effects of the different anesthetic MS-222 and lidocaine-HCl doses on the blood physiological responses, on the time required for anesthesia and recovery, and on the survival rates of black rockfish (Sebastes schlegeli). Plasma cortisol was its highest levels (96.1$\pm$12.1 ng/ml) at 6 hours after the administration of 300 ppm of MS-222, and in all groups, plasma cortisol levels were higher than the initial levels during the anesthetic experiment. Fish receiving lidocaine-HCl also exhibited higher than initial plasma cortisol levels at almost experimental intervals. The middle size fish exhibited the highest glucose level (143.3$\pm$14.5 mg/dl) at 50 ppm of anesthesia after 1 hour, and every level was significantly higher than the initial level for at least 12 hours. Glucose levels in fish to which lidocaine-HCl was administered were comparable to the levels seen in conjunction with MS-222 treatment. In fish anesthetized with MS-222, K+ levels in the small size fish were significantly elevated after 1 hour, while Na+ levels did not change in any of the groups throughout the experiment. Anesthetic time was significantly attenuated with increases in the concentrations of MS-222 and lidocaine-HCl. We also noted a correlation between anesthetic time and fish size, in that larger fish took a longer time, followed by the middle size and then the small size fish. The all fish size groups showed above $95\%$ survival rates at every experimental concentration in MS-222 and 300-400 ppm in lidocaine-HCl. The results may indicate that 100-200 ppm MS-222 and 400 ppm lidocaine-HCl are the most effective doses as sedatives for the black rockfish and these doses could be used as the suitable anesthetics doses.

조피볼락(Sebastes schlegeli) 소형어와 중형어를 대상으로 MS-222와 lidocaine-HCl 마취농도에 따른 마취 및 회복시간과 혈액생리학적 반응, 생존율 등을 조사하여 마취효과를 비교하였다. 마취농도에 따른 마취시간은 MS-222와 lidocaule-HCl 모두에서 마취농도가 증가함에 따라 마취시간이 유의하게 감소하였다. 어체크기에 따른 마취시간은 소형어(평균전장 18.2$\pm$1.0cm, 평균체중 100.6$\pm$21.1 g)보다는 중형어(평균전장 14.2$\pm$0.9 cm, 평균체중 51.3$\pm$10.5 g)에서 길었다. 그러나 회복시간은 MS-222와 lidocaine-HCl 모두에서 농도가 증가함에 따라 회복시간이 길어졌다. 회복시간은 소형어보다는 중형어에서 더욱 짧았다. 마취농도에 바른 cortisol 농도는 MS-222 300 ppm에서 마취 6시간후 96.1$\pm$12.1 ng/ml로 가장 높은 값을 나타내었으나, 실험종료시까지 모든 실험구에서 실험 개시전 보다 높은 수준을 보였다. Lidocaine-HCl도 모든 실험구에서 실험 종료시까지 실험개시전보다 높은 값을 나타냈다. Glucose 농도는 소형어의 경우 MS-222 마취 1시간 후 $30.3{\pm}15.4{\~}69.5{\pm}23.2 mg/dl$로 다소 높았으나 마취 6시간 후에는 유의한 차이를 보이지 않았다. 중형어는 소형어 보다 다소 높은 농도를 나타내었으나 12시간 후에는 실험 개시전 수준으로 회복되었다. Lidocaine-HCl 경우는 MS-222와 비슷한 경향을 보였다. Na+ 농도는 모든 실험구에서 실험개시전과 차이를 나타내지 않았다. K+ 농도는 소형어에서 MS-222 마취 1시간후 $5.2{\pm}1.4{\~}6.7{\pm}1.2 mEq/L$의 범위로 유의하게 높았지만 마취 6시간후 실험 개시전 수준으로 회복되었다. 중형어는 유의한 차이를 보이지 않았다 Lidocaine-HCl의 경우, K+ 농도는 모든 실험구에서 실험 개시전과 차이를 나타내지 않았다. 삼투질 농도는 MS-222에서 $317.0{\pm}4.0{\~}362.0{\pm}12.9 mOsm/kg$의 범위를 보였으며, lidocaine-HCl의 경우에도 유사한 경향을 나타냈다. MS-222 마취에서는 모든 실험농도예서 lidocaine-HCl 마취에서는 300${\~}$400 ppm에서 $95\%$이상의 생존율을 나타냈다. 조피볼락의 소형어 및 중형어에 대한 마취제로서 MS-222와 lidocaine-HCl의 농도는 각각 100${\~}$200 ppm, 400 ppm이 적합할 것으로 판정된다.

Keywords

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