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Effect of salinity on hemolymph calcium concentration during the molt cycle of the prawn Penaeus monodon

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Date
1989
Author
Parado-Estepa, Fe D.
Ladja, Jocelyn M.
de Jesus, Evelyn Grace
Ferraris, Ronaldo P.
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118
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Abstract
Prawns (Penaeus monodon) were obtained from ponds in Iloilo, Philippines, in 1984 and 1985 and maintained in salinities from 8 to 44‰. Total hemolymph calcium was largely affected by molt stage and less so by salinity. A sharp, transient increase in hemolymph calcium occurred 3 to 6 h postmolt, followed by an equally rapid decrease from 6 h postmolt to intermolt. This biphasis response was limited to prawns in 8, 20 and 32‰S; in 44‰S, hemolymph calcium remained the same throughout the sampling period. Peak concentrations of total calcium were greater in low (8 and 20‰S) than in high salinities. Salinity had no effect on the duration of molt cycle nor on time of occurrence of molt. Almost half of molting incidents occurred between 18.01 and 0.00 hrs, and one-third between 0.01 and 06.00 hrs.
URI
http://hdl.handle.net/10862/1302
Suggested Citation
Parado-Estepa, F. D., Ladja, J. M., de Jesus, E. G., & Ferraris, R. P. (1989). Effect of salinity on hemolymph calcium concentration during the molt cycle of the prawn Penaeus monodon. Marine Biology, 102(2), 189-193.
DOI
10.1007/BF00428279
Subject
calcium ASFA; developmental stages ASFA; haemolymph ASFA; moulting ASFA; Decapoda; Penaeus monodon; Philippines
Taxonomic term
Penaeus monodon
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