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. 2023 Apr 3;13(7):1245.
doi: 10.3390/ani13071245.

Effect of Different Water Salinities on the Larvae of the Blue Bream Ballerus ballerus (Linnaeus, 1758) during Rearing

Przemysław Piech  1 , Roman Kujawa  1
Affiliations

Effect of Different Water Salinities on the Larvae of the Blue Bream Ballerus ballerus (Linnaeus, 1758) during Rearing

Przemysław Piech et al. Animals (Basel). .

Abstract

The influence of water salinities of 3, 5, and 7 ppt on the growth and survival of Ballerus ballerus (L.) larvae was studied. The control group was fish reared in freshwater (0 ppt). The larvae showed high tolerance to water salinities of 5-7 ppt. The mean final weight of the larvae ranged from 48.6 to 64.1 mg, with corresponding mean total lengths from 18.9 to 22.6 mm, depending on the water salinity level. The best larval length increments were recorded in water with salinity of 3 ppt. They were only slightly lower in 0 ppt water, and there were no statistically significant differences between the breeding rates calculated for larvae reared in 3 ppt water. Depending on the salinity level of the water, the final survival rate of the blue bream larvae ranged from 83.5 to 98.6%. The blue bream larvae reared in water with salinity levels of 5 and 7 ppt were statistically smaller than the others, but the results obtained were equally satisfactory.

Keywords: blue bream; growth rate; larvae; rheophilic fish; salinity; survivability.

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Conflict of interest statement

The authors declare no conflicts of interest.

Figures

Figure 1
Figure 1
An overview diagram of one of the four prepared experimental systems used in the experiment: 1—protein skimmer, 2—tubular diffuser, 3—bactoballs, 4—pump, 5—fluorescent lamps, 6—aquariums with fishes, 7—aeration stone, 8—aquarium with filter bed.
Figure 2
Figure 2
Cumulative mortality of blue bream Ballerus ballerus (L.) larvae reared in freshwater and water with salinity of 3, 5, and 7 ppt.
Figure 3
Figure 3
Increase in the body length of the blue bream Ballerus ballerus (L.) larvae reared in freshwater and in water with salinity of 3, 5, and 7 ppt. The same letter indexes above the columns in a given sample mean that the values are not statistically significantly different (α = 0.05).
Figure 4
Figure 4
Increase in the body weight of blue bream Ballerus ballerus (L.) larvae reared in freshwater and in water with salinity of 3, 5, and 7 ppt. The same letter indexes above the columns in a given sample mean that the values are not statistically significantly different (α = 0.05).
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