Record Details

Carbonic anhydrase and Na/K-ATPase activities during the molt cycle of low salinity-reared white shrimp Litopenaeus vannamei

CMFRI Repository

View Archive Info
 
 
Field Value
 
Relation http://eprints.cmfri.org.in/6164/
 
Title Carbonic anhydrase and Na/K-ATPase activities during the molt
cycle of low salinity-reared white shrimp Litopenaeus vannamei
 
Creator Jasmani, Safiah
Jayasankar, Vidya
Shinji, Junpei
Wilder, Marcy N
 
Subject Prawn and Prawn fisheries
 
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.
 
Date 2010
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/6164/1/fisheries_science_vol.76.pdf
Jasmani, Safiah and Jayasankar, Vidya and Shinji, Junpei and Wilder, Marcy N (2010) Carbonic anhydrase and Na/K-ATPase activities during the molt cycle of low salinity-reared white shrimp Litopenaeus vannamei. Fisheries Science, 76. pp. 219-225.