FRESHWATER ADAPTATION IN THE EURYHALINE TELEOST, CHELON-LABROSUS .1. EFFECTS OF ADAPTATION, PROLACTIN, CORTISOL AND ACTINOMYCIN-D ON PLASMA OSMOTIC BALANCE AND (NA+-K+)ATPASE IN GILL AND KIDNEY

被引:66
作者
GALLIS, JL [1 ]
LASSERRE, P [1 ]
BELLOC, F [1 ]
机构
[1] UNIV BORDEAUX I,INST UNIV BIOL MARINE,F-33120 ARCACHON,FRANCE
关键词
D O I
10.1016/0016-6480(79)90081-9
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Microsomal (Na+K+)ATPase activities in gills and kidneys of thick-lipped mullet, Chelon labrosus, which had been gradually acclimated to fresh water were studied using initial velocity measurements. In mullet transferred to fresh water, the branchial ATPase activity rises gradually during a 2-week period (long-term fresh water adaptation: L-TFW). The renal ATPase activity rises rapidly after the transfer to fresh water (FW). In the L-TFW mullet and in seawater (SW) mullet, cortisol injections cause no, or only slight, stimulation of renal or branchial ATPase activity; on the other hand, cortisol causes a marked decrease in ATPase activity in mullet adapted to FW for only a short period of time (S-TFW). Only branchial ATPase, and not kidney ATPase, is inhibited by prolactin, and this only in S-TFW and SW mullet. Actinomycin D does not inhibit renal ATPase activity, but the response of branchial ATPase to this antibiotic depends on the environment; SW-acclimated mullet are sensitive to actinomycin D but the longer mullet are acclimated to FW the more insensitive they become. These findings may indicate that more than one functional form of gill (Na++K+)ATPase exists, and that these vary in activity with external salinity. © 1979.
引用
收藏
页码:1 / 10
页数:10
相关论文
共 36 条
[11]  
EPSTEIN FH, 1969, YALE J BIOL MED, V41, P388
[12]   IONIC EXCHANGE MECHANISMS IN FISH GILLS [J].
EVANS, DH .
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-PHYSIOLOGY, 1975, 51 (03) :491-495
[13]   CHANGES OF (NA+-K+) DEPENDENT ATPASE ACTIVITY IN GILLS AND KIDNEYS OF 2 MULLETS CHELON-LABROSUS (RISSO) AND LIZA-RAMADA (RISSO) DURING FRESH-WATER ADAPTATION [J].
GALLIS, JL ;
BOURDICHON, M .
BIOCHIMIE, 1976, 58 (05) :625-627
[14]  
GALLIS JL, 1977, 27 P INT C PHYS SC P, V13, P251
[15]  
GALLIS JL, 1976, 12EME J BIOCH LAT SO, P21
[16]   SODIUM-PUMP [J].
GLYNN, IM ;
KARLISH, SJD .
ANNUAL REVIEW OF PHYSIOLOGY, 1975, 37 :13-55
[18]  
JOHNSON DW, 1973, AM ZOOL, V13, P799
[19]   CHANGES IN ACTIVITY OF SODIUM-POTASSIUM-ACTIVATED ADENOSINETRIPHOSPHATASE IN GILLS DURING ADAPTATION OF JAPANESE EEL TO SEA WATER [J].
KAMIYA, M ;
UTIDA, S .
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY, 1968, 26 (02) :675-&
[20]   OSMOREGULATION AND DIFFERENTIAL PENETRATION OF 2 GREY MULLETS, CHELON-LABROSUS (RISSO) AND LIZA-RAMADA (RISSO) IN ESTUARINE FISH PONDS [J].
LASSERRE, P ;
GALLIS, JL .
AQUACULTURE, 1975, 5 (04) :323-344