The time course of seawater acclimation in Fundulus heteroclitus L.

Wiley - Tập 228 Số 1 - Trang 33-39 - 1983
William F. Jacob1, Malcolm H. Taylor2
1College of Marine Studies and School of Life and Health Sciences, University of Delaware, Newark, Delaware 19711
2School of Life and Health Sciences, University of Delaware, Newark, Delaware 19711

Tóm tắt

AbstractSerum Na+ and osmolality increased significantly within 12–24 hours after transfer of Fundulus heteroclitus to seawater (SW) but returned to freshwater (FW) levels after 4 days in SW. Na+K+‐adenosine triphosphatase (ATPase) remained low during the first 2 days in SW but increased to a level characteristic of fully acclimated fish within 4 days. Serum cortisol did not display a marked elevation during the rise in Na+K+‐ATPase. Thus, the pattern of SW‐acclimation in F. heteroclitus is similar to that of the eel (Anguilla rostrata), but acclimation is accomplished somewhat more rapidly in F. heteroclitus and the prolonged period of elevated serum cortisol observed in the eel does not occur.A distinct peak in cortisol was observed during acclimation to FW when gill Na+K+‐ATPase and serum osmolality were declining. This indicates that elevated serum cortisol does not always lead to an increase in Na+K+‐ATPase activity.

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Tài liệu tham khảo

10.1016/0016-6480(81)90297-5

10.1677/joe.0.0500075

10.1016/0044-8486(78)90070-4

10.1016/0300-9629(72)90245-9

10.1016/S1546-5098(08)60101-6

10.1016/0016-6480(72)90018-4

10.1126/science.156.3779.1245

Epstein F. H., 1969, Sodium and potassium activated adenosine triphosphatase in kidneys of Fundulus heteroclitus adapted to fresh and salt water, Yale J. Biol. Med., 41, 388

Evans D. H., 1980, Kinetic studies of ion transport by fish gill epithelium, Am. J. Physiol., 228, R224

10.1007/BF00706591

10.1016/S0021-9258(18)84756-1

10.1007/BF00455957

Forrest J. N., 1973, Na transport and Na/K‐ATPase in gills during adaptation to seawater: Effects of cortisol, Am. J. Physiol., 224, 709, 10.1152/ajplegacy.1973.224.3.709

Forrest J. N., 1973, Plasma cortisol response to saltwater adaptation in the American eel Anguilla rostrata, Am. J. Physiol., 224, 714, 10.1152/ajplegacy.1973.224.3.714

10.1016/0016-6480(79)90081-9

Hendler E. D., 1972, Effects of adrenalectomy and hormone replacement on Na‐K‐ATPase in renal tissue, Am. J. Physiol., 222, 754, 10.1152/ajplegacy.1972.222.3.754

10.1016/0005-2744(68)90176-9

10.1083/jcb.70.1.157

10.1016/0300-9629(77)90188-8

10.1016/0016-6480(80)90191-4

10.1016/S0021-9258(19)52451-6

10.1016/0016-6480(74)90090-2

10.1016/0016-6480(69)90040-9

Maetz J., 1967, Evolution de la balance minérale du sodium chez Fundulus heteroclitus au cours du transfert d'eau de mer en eau douce: Effets de l'hypophysectomie et de la prolactine, Gen. Comp. Endocrinol., 8, 63

10.1038/2141118a0

10.1085/jgp.50.2.391

Pickford G. E., 1969, Studies on the blood serum of the Cyprinodont fish Fundulus heteroclitus, adapted to fresh or salt water, Trans. Connecticut Acad. Sci., 43, 25

10.1038/228378a0

10.1016/0016-6480(70)90036-5

10.1002/jez.1401990315

10.1007/BF00337316

10.1002/jez.1401990316

Sokal R., 1969, Introduction to Biostatistics

10.1002/jez.1402020206

10.1016/0300-9629(71)90067-3

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Wiley

Tập 228 Số 1

33-39

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