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The effects of water hardness on the hatching and viability of silver carp (Hypophthalmichthys molitrix) eggs

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Date
1987
Author
Gonzal, Angelito C.
Aralar, Emiliano V.
Pavico, Josefina Ma. F.
Page views
2,791
ASFA keyword
water hardness ASFA
fish culture ASFA
hatching ASFA
survival ASFA
fish eggs ASFA
AGROVOC keyword
Hypophthalmichthys molitrix AGROVOC
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Abstract
An investigation was conducted to establish water hardness concentration for optimum hatching of silver carp (Hypophthalmichthys molitrix) eggs. Eggs were incubated for 19 h at 26.5°C at six levels of water hardness: 100, 200, 300, 400, 500 and 600 mg/l CaCO3. Water absorption at 100–200 mg/l CaCO3 caused eggs to burst prematurely and minimal water absorption occurred at 600 mg/l CaCO3. Chloride concentration at 0 and 6 h post-fertilization was significantly related to egg hatchability. Total ammonia-nitrogen at 6 h, pH at 6 h, magnesium hardness at 18 h and chlorides at 18 h significantly influence viability of larvae. A water hardness of 300–500 mg/l CaCO3 is recommended for the successful hatching of silver carp eggs.
URI
http://hdl.handle.net/10862/1270
Suggested Citation
Gonzal, A. C., Aralar, E. V., & Pavico, J. M. F. (1987). The effects of water hardness on the hatching and viability of silver carp (Hypophthalmichthys molitrix) eggs. Aquaculture, 64(2), 111-118. https://doi.org/10.1016/0044-8486(87)90347-4 
DOI
10.1016/0044-8486(87)90347-4
Type
Article
ISSN
0044-8486
Collections
  • Journal Articles [1201]


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