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Title: | Carbonic anhydrase and Na/K-ATPase activities during the molt cycle of low salinity-reared white shrimp Litopenaeus vannamei |
Other Titles: | Not Available |
Authors: | Jasmani,Safiah Jayasankar,Vidya Shinji,Junpei Wilder,Marcy N |
ICAR Data Use Licennce: | Not Available |
Author's Affiliated institute: | Not Available |
Published/ Complete Date: | 2010 |
Project Code: | Not Available |
Keywords: | Carbonic anhydrase Na/K-ATPase Litopenaeus vannamei White shrimp Osmolality Osmoregulation Molt cycle |
Citation: | Not Available |
Series/Report no.: | Not Available |
Abstract/Description: | Changes in hemolymph osmolality, ion concentrations, and enzymatic activities of carbonic anhydrase (CA) in the gills and epidermal tissue, and Na/K-ATPase in the gills during the molt cycle were investigated in the white shrimp Litopenaeus vannamei. Hemolymph osmolality was high in the intermolt and early premolt stages, but started to decrease prior to ecdysis through to postmolt stages A and B. Changes in Na? and Cl- ion concentrations paralleled those in hemolymph osmolality. CA activity levels in the anterior and posterior gills were low at intermolt stage C0 and premolt stage D0, and maximum at premolt stage D3. In the epidermal tissue, activity was relatively high at intermolt stage C0 and premolt stage D0, but fluctuated towards premolt stage D3 and postmolt stage A. On the other hand, Na/K-ATPase activity in the gills decreased between intermolt stage C0 and premolt stage D2, but increased at premolt stage D3 and postmolt stage A. The changes in patterns of CA activity during the molt cycle suggest that CA may be involved in supplying counter-ions for Na? and Cl- uptake during molting. Branchial Na/K-ATPase appears to be involved in producing local osmotic gradients in order to support water influx across the epithelium. |
Description: | Not Available |
ISSN: | Not Available |
Type(s) of content: | Article |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Fisheries Science |
Volume No.: | 76 |
Page Number: | 219-225 |
Name of the Division/Regional Station: | Not Available |
Source, DOI or any other URL: | http://eprints.cmfri.org.in/6164/1/fisheries_science_vol.76.pdf |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/62601 |
Appears in Collections: | FS-CMFRI-Publication |
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