FINE-STRUCTURE OF CHLORIDE CELLS IN FRESH-WATER-ADAPTED AND SEAWATER-ADAPTED OREOCHROMIS-NILOTICUS (LINNAEUS) AND OREOCHROMIS-MOSSAMBICUS (PETERS)

被引：60

作者：

CIONI, C

DEMERICH, D

CATALDI, E

CATAUDELLA, S

机构：

[1] UNIV ROMA TOR VERGATA 2,DIPARTIMENTO BIOL,VIA ORAZIO RAIMONDO,I-00173 ROME,ITALY

[2] UNIV ROME LA SAPIENZA,DIPARTIMENTO BIOL ANIM & UOMO,I-00161 ROME,ITALY

来源：

JOURNAL OF FISH BIOLOGY | 1991年 / 39卷 / 02期

关键词：

CHLORIDE CELLS; OSMOREGULATION; SALINITY TOLERANCE; OREOCHROMIS-NILOTICUS; OREOCHROMIS-MOSSAMBICUS;

D O I：

10.1111/j.1095-8649.1991.tb04356.x

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

Ultrastructural features of branchial chloride cells in Oreochromis niloticus (Linnaeus) and O. mossambicus (Peters) adapted to both fresh water and sea water were compdred. In freshwater adapted fish of both species chloride cells showed similar morphological features. Multicellular complexes made of a mature chloride cell and one or more accessory cells sharing a single apical crypt have been observed. Whereas high percentages of 0. mossambicus survived at maximum salinity only a few individuals of 0.niloticus showed the capacity to adapt to sea water. In the seawater‐adapted individuals of 0.niloficus and 0. rnossambicusthe chloride cells showed a two‐ and three‐fold increase in sizei. respectively. Most chloride cells are organized in large multi‐cellular complcxcs with apical interdigitations of accessory cells and ‘leaky junctions’. These results indicate that the difference in euryhalinity of the species studied is related to functional rather than structural differences. Copyright © 1991, Wiley Blackwell. All rights reserved

引用

页码：197 / 209

页数：13

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