Comparison in Serum Constituents of Cultured Marine Fishes in Early Summer Season

주요 양식어류의 하절기 혈액성분 비교

  • 전중균 (강릉대학교 생명과학대학 해양생명공학부) ;
  • 김형배 (한국해양연구소 해양생물연구부)
  • Published : 1998.11.01

Abstract

This study was performed to obtain the basic data on the serum constituents of several marine fish spesies commonly cultured in Korea. Blood samples taken from six species of fish were analyzed for various components of serum, total protein (TP), albumin (ALB), triglyceride (TRIG), cholesterol (CHOL), glucose (GLC), lipase (LIPA), amylase (AMYL), aspartate transaminoferase (AST), sodium (Na), potassium (K), chloride (CI) and phosphorus (PHOS). The fish used were coho salmon (Oncorhynchus kisutch), rock fish (Sebastes schlegeli), sea bass (Lateolabrax japonicus), olive flounder (Paralichthys olivaceus), rock fish (Sebastes schlegeli), sea bass (Lateolabrax japonicus), olive flounder (Paralichthys olivaceus), parrot fish (Oplegnathus fasciatus) and jack mackerel (Trachurus jaonicus) reared at the Chungmu Experimental Fish Culture Station of KORDI when the water tempetature was ca. 16.5$^{\circ}C$. There were significant differences in TRIG, CHOL, LIPA and AMYZ among the species analyzed. TRIG concentratin were ranged 178~180mg/dl in jack mackeerel and rock fish, 126~159 mg/dl in olive flounder and sea bass, and 102~114 mg/dl in coho salmon and parrot fish, respectively. Jack mackerel showed the highest levels in CHOL (255mg/dl) and GLC(138mg/dl) among species. LIPA levels were recorded 256 U/dl in coho salmon, 41~42 U/dl in parrot fish and rock fisk, and 5~11 U/dl jack mackerel and sea bass, respectively. AMYL activity of coho salmon was measured as 2, 665 U/dl, and that of jack mackerel was 1,210 U/dl while sea bass showed 60 U/dl and parrot fish, olive flounder and rock fish had at most 5 U/dl. On the other hand, there was no significant difference in the concentration of Na and CI. Na and K were proved that they were negatively correlated in all the species. Generally, among blood components, PHOS and CHOL levels were different depending on environmental temperature of each fish species, especially in olive flounder. Rock fish and parrot fish showed high blood concentration of those components during low temperature period while olive flounder and jack mackerel reached high level during their optimal environmental temperature period. The electrolyte concentration and LIPA activity were high during low water temperature period, in general, but TP and ALB concentrations were high during optimal temperature period. The concentrations of TRIG, CHOL and GLC, those which were used as energy sourses, were different among species by season.

주요 해산 양식어류의 혈액 성분에 관한 기초 자료를 얻기위하여, 적수온기(수온 16.5도씨)에 조피볼락(Sebastes schlegeli, 평균체중 553g), 농어(Lateolabrax japonicus, 평균체중 325g), 넙치(Paralichthys olivaceus, 평균체중 390g), 돌돔(Oplegnathus fasciatus, 평균체중 490g), 은연어(Oncorhynchus kisutch, 평균체중 1,750g) 및 전갱이(Trachurus japonicus, 평균체중 438g)를 사용하여 꼬리 정맥에서 채혈하여 혈청 중의 총단백질(TP), 알부민(ALB), 중성 지방(TRIG), 콜레스테롤(CHOL), 포도당(GLC), 리파제(LIPA), 아밀라제(AMYL), 아미노산전이효소(AST), 나트륨(Na), 칼륨(K), 염소(Cl), 인(PHOS) 등을 측정하였다. TP 농도는 4.4~6.0 g/dl의 수준이었으며, ALB 농도는 1.7~2.4g/dl의 수준이었다. A/G비는 은연어가 0.9로 가장 높았고 나머지는 0.6정도로 비슷하였다. 지질 성분 중 TRIG 농도는 어종에 따라 유의적인 차이를 보여, 전갱이와 조피볼락(178~180 mg/dl)이 가장 높았고, 은연어와 돌돔(102~114 mg/dl)이 가장 낮았으며, 넙치와 농어(126~159 mg/dl)는 그 중간 수준이었다. 그리고 CHOL 농도도 전갱이가 255 mg/dl로 가장 높았고 이어서 농어 (230 mg/dl)와 넙치, 은연어(206~217 mg/dl), 조피볼락(154 mg/dl)의 순서였으며 돌돔이 가장 낮아 88 mg/dl의 수준을 보여 유의적인 차이가 있었다. 어종별 혈당(GLC)의 농도는 전갱이(138 mg/dl)가 가장 높았고 돌돔 (111b mg/dl), 은연어나 농어 (64~78 mg/dl), 조피볼락(47 mg/dl), 넙치(14 mg/dl)의 순서였다. 지질분해효소(LIPA)와 당질분해효소(AMYL)의 어종별 활성은 어종간에 유의적인 차이를 보여, 은연어 LIPA와 AMYL 활성이 모두 가장 높았지만 농어는 가장 낮았으며, 돌돔과 넙치와 조피볼락에서 AMYL 활성은 검출 한계치(5 U/dl) 이하였다. 그리고 무기질의 Na와 Cl의 농도는 유사한 수준이었으며, Na 농도와 K 농도는 서로 상반되는 경향이었다. 각종 혈중 성분의 계절적인 차이를 조사하였더니, PHOS와 CHOL 농도는 계절적인 영향이 컷지만, K와 GLC 농도는 큰 차이를 보이지 않았고, 어류 중에서는 넙치가 큰 차이를 보였다. 즉, 넙치나 전갱이는 적수온기에서 혈중농도가 높았지만 조피볼락이나 돌돔은 저수온에서 혈중 농도가 높았다. 전해질과 LIPA 활성은 대체로 저수온기에서 농도가 높았으나, TP와 ALB등은 적수온기에서 더 높았고, 어너지로 쓰이는 TRIG나 CHOL, GLC 농도의 계절에 따른 차이는 어종에 따라 달랐다.

Keywords

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