Title

大海马育苗池水华发生期间细菌动态及相关理化参数

Translated Titles

Effects of water-bloom on Environmental Factors in Breeding Water for Juvenile Seahorse, Hippocamppus kuda Bleeker

Authors

邓钢(Gang Deng);吕军仪(Jun-Yi Lu);林强(Qiang Lin)

Key Words

水华 ; 大海马 ; 育苗池 ; 环境因子 ; water-bloom ; Hippocampus kuda Bleeker ; juvenile cultural pond ; environmental factor

PublicationName

中國水產科學

Volume or Term/Year and Month of Publication

12卷4期(2005 / 07 / 01)

Page #

477 - 482

Content Language

簡體中文

Chinese Abstract

Water-bloom usually takes place in breeding water for juvenile seahorse, Hippocampus kuda Bleeker in summer and autumn in South China Sea. This study was conducted in Seahorse Culture Base of Lufeng City, Guangdong Province, China. Two groups of ponds were chosen: the first group containing 3 normal ponds without water-bloom and the second containing 3 ponds with water-bloom. The experiment period was 20 d. The results showed that water-bloom easily took place easily when water temperature was upper to 24℃, and the dominant algae in the water-bloom ponds was Microcystic aeruginosa. The amount of heterotrophic bacteria in the first group was more than that in the second group averagely. In the surface of breeding water for the two groups, the variance of heterotrophic bacteria was from 2.50×10^3 CFU/mL to 7.23×10^4 CFU/mL and from 4.75×10^2 CFU/mL to 6.90×10^3 CFU/mL respectively; the variable ranges of Vibrio numbers were from 0.85×10^2 CFU/mL to 7.19×10^3 CFU/mL and from 0.33×10^2 CFU/mL to 8.92×10^2 CFU/mL respectively. Meanwhile, at the bottom of culture water, the average variable ranges of heterotrophic bacteria were from 4.75×10^3 CFU/mL to 7.53×10^4 CFU/mL and from 6.25×10^2 CFU/mL to 1.50×10^4 CFU/mL respectively; the average variable ranges of Vibrio numbers were from 8.30×10^2 CFU/mL to 1.16×10^4 CFU/mL and from 0.53×10^2 CFU/mL to 2.04×10^3 CFU/ mL, respectively. The difference of bacteria numbers between the two groups was significant (P<0.05). Average water temperature in the water-bloom ponds was lower by about 1℃ than that in the normal ponds and dissolved oxygen in the water-bloom ponds decreased by 22%-33%. But ammonium content in the water-bloom ponds was 1.41 to 2.34 times of that in the normal ponds. The amounts of Vibrio in the surface water and at the bottom of breeding ponds decreased by 61%-87% and 82%-93% respectively when water-bloom was took place.

English Abstract

Water-bloom usually takes place in breeding water for juvenile seahorse, Hippocampus kuda Bleeker in summer and autumn in South China Sea. This study was conducted in Seahorse Culture Base of Lufeng City, Guangdong Province, China. Two groups of ponds were chosen: the first group containing 3 normal ponds without water-bloom and the second containing 3 ponds with water-bloom. The experiment period was 20 d. The results showed that water-bloom easily took place easily when water temperature was upper to 24℃, and the dominant algae in the water-bloom ponds was Microcystic aeruginosa. The amount of heterotrophic bacteria in the first group was more than that in the second group averagely. In the surface of breeding water for the two groups, the variance of heterotrophic bacteria was from 2.50×10^3 CFU/mL to 7.23×10^4 CFU/mL and from 4.75×10^2 CFU/mL to 6.90×10^3 CFU/mL respectively; the variable ranges of Vibrio numbers were from 0.85×10^2 CFU/mL to 7.19×10^3 CFU/mL and from 0.33×10^2 CFU/mL to 8.92×10^2 CFU/mL respectively. Meanwhile, at the bottom of culture water, the average variable ranges of heterotrophic bacteria were from 4.75×10^3 CFU/mL to 7.53×10^4 CFU/mL and from 6.25×10^2 CFU/mL to 1.50×10^4 CFU/mL respectively; the average variable ranges of Vibrio numbers were from 8.30×10^2 CFU/mL to 1.16×10^4 CFU/mL and from 0.53×10^2 CFU/mL to 2.04×10^3 CFU/ mL, respectively. The difference of bacteria numbers between the two groups was significant (P<0.05). Average water temperature in the water-bloom ponds was lower by about 1℃ than that in the normal ponds and dissolved oxygen in the water-bloom ponds decreased by 22%-33%. But ammonium content in the water-bloom ponds was 1.41 to 2.34 times of that in the normal ponds. The amounts of Vibrio in the surface water and at the bottom of breeding ponds decreased by 61%-87% and 82%-93% respectively when water-bloom was took place.

Topic Category 生物農學 > 農業
生物農學 > 森林
生物農學 > 畜牧
生物農學 > 漁業