Preliminary experiment on opening bait of juvenile Glyptosternum maculatum
This experiment was designed to investigate the effects of different opening baits and combination methods on the survival rate and growth of Glyptosternum maculatum juvenile fishes.Littlenecks of 0.0206±0.004 g were randomly divided into 11 bait groups and placed in a hatchery tank of size 3.6 m×0.5 m×0.2 m for a 42-d feeding trial.The number of dead fish was recorded daily,and growth was measured every 7 d.The results showed that the number of dead fish in each bait group was different from that of the other bait groups.The results of the experiment showed that there were differences in the effects of different bait groups on the fiddler fishes.Specifically,the low-est mortality rate was observed in the group of Anguilla larvae,followed by the group of Anguilla larvae+Spiruli-na,and then in the order of eel feed+Spirulina,eel feed,eel feed+Spirulina+Anguilla larvae,and other com-binations.In terms of full length and fish mass growth,the slowest growth was observed in the pig liver group,the fastest growth was observed in the eel feed+Spirulina+Mosquito larvae shaking group,followed by the mosquito larvae+Spirulina group.The study suggests that the choice of using the bait group of mosquito larvae+spirulina or eel feed+spirulina+mosquito larvae may be more effective for the opening effect of the fishes of the black-spotted fishes.
Glyptosternum maculatumjuvenile fishesopening baitsensitivity period
万方数据
维普
