지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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Decrease in dissolved oxygen concentrations associated with temperature fluctuation isan important criteria to evaluate the mortality rate of the species. Based on this parameter, weinvestigated the survival rate, physiological response and histological change of warty sea squirt.
It was found that the survival rate of the warty sea squirt species was 63.3% at 23°C and 56.6%at 26°C respectively. However, exposure of six days at 29°C caused deaths among species, whichindicated the 6day-LT50 of the tested species to be 24.58°C(19.48~35.48°C). Further, after 11 dayof exposure, the dissolved oxygen concentration has been found to decrease, with the survival rateof 20% at 4.0 mg L-1 and deaths at 2.0 mg L-1, thus 11day-LC50 calculated to be 3.88 mg L-1(3.29~4.57 mg L-1). In addition, decrease in rate of oxygen consumption and excretion of ammoniawas also noted at this critical water temperature and dissolve doxygen concentration. Moreover,there has been common histopathological changes were observed in warty sea squirt’s gillpouch, digestive tract, and tunic as follows such as: proliferation of epithelial cells, condensationand necrosis, permeation of phagocyte and blood cell, loss of cilium and muscular fiber degeneration.
Based on our study results, we suggest that these parameters can also be useful to evaluatethe survival rate and physiological response in other species.
목차
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참고문헌 (21)
참고문헌 신청
Ansell AD / 1980 / Upper temperature tolerance of three molluscs from South African sandy beaches / J. Expt. Mar. Biol. Ecol 48 : 243 ~ 251
Bayne BL / 1983 / In The Mollusca / Academic Press : 407 ~ 515
DeZwaan A / 1976 / Anaerobic metabolism in bivalvia (Mollusca). Characteristics of anaerobic metabolism / Biochem. Physiol 54B : 313 ~ 317
Finney DJ / 1971 / Probit Analysis / Cambridge University Press : 333 ~
Herreid CF. / 1980 / Hypoxia in invertebrates / Comp. Biochem. Physiol 67A : 311 ~ 320
Bayne BL / 1983 / In The Mollusca / Academic Press : 407 ~ 515
DeZwaan A / 1976 / Anaerobic metabolism in bivalvia (Mollusca). Characteristics of anaerobic metabolism / Biochem. Physiol 54B : 313 ~ 317
Finney DJ / 1971 / Probit Analysis / Cambridge University Press : 333 ~
Herreid CF. / 1980 / Hypoxia in invertebrates / Comp. Biochem. Physiol 67A : 311 ~ 320
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