Premium
The effects of water source and secondary water treatment on flame angelfish Centropyge loriculus (Günther) reproduction
Author(s) -
Callan Chatham K,
Laidley Charles W
Publication year - 2010
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.2010.02525.x
Subject(s) - fecundity , biology , broodstock , human fertilization , zoology , sterilization (economics) , reproduction , fishery , ecology , anatomy , fish <actinopterygii> , population , aquaculture , demography , sociology , monetary economics , economics , foreign exchange market , foreign exchange
This study was conducted to determine whether water source and water treatment affected flame angelfish ( Centropyge loriculus ) reproduction. Flame angelfish broodstock were maintained and monitored for reproductive performance (fecundity, egg fertilization rates and egg viability) in either untreated well‐water (WW), sterilized ocean water (OW) or WW treated by intensive recirculation treatment (biological filtration, protein skimming, UV sterilization and mechanical filtration) (RAS). Results of this experiment indicated that although pairs maintained in WW initially exhibited good spawning performance, fecundity, egg fertilization rates and egg viability declined after 25 weeks. Treatment of WW by recirculation did not significantly improve flame angelfish reproductive performance with only moderately improved fecundity compared with pairs in the WW treatment. In contrast, pairs held in sterilized OW exhibited significantly greater fecundity, egg fertilization rates and egg viability from week 25 onwards than pairs in either the WW or RAS treatments. However, in the process of developing OW biosecurity protocols, we found that sterilization of OW using chlorine at levels >25 mg L −1 (30 min) negatively affected flame angelfish egg fertilization rates indicating that alternative methods of water sterilization may be warranted.