›› 2018, Vol. 30 ›› Issue (10): 1647-1654.DOI: 10.3969/j.issn.1004-1524.2018.10.05

• Animal Science • Previous Articles     Next Articles

Quantity dynamics of heterotrophic bacteria and Vibrio in Cyclina sinensis rearing ponds

ZHENG Xiaoye1, ZHENG Tianlun1, CAO Feifei1, ZHU Ningyu1, DING Lifa2, WANG Guoliang3, *   

  1. 1. Zhejiang Fisheries Technical Extension Station, Hangzhou 310023, China;
    2. Wenling Fisheries Technical Extension Station, Taizhou 317500, China;
    3. Key Laboratory of Applied Marine Biotechnology of Ministry of Education, School of Marine Science, Ningbo University, Ningbo 315211, China
  • Received:2017-12-15 Online:2018-10-25 Published:2018-11-02

Abstract: To study the association between the dynamics of heterotrophic bacteria and the density of rearing Cyclina sinensis, and to provide the basis information to assessment and predict the mariculture pond environment, heterotrophic bacteria of rearing water, sediment and Cyclina sinensis cavity fluid were collected from May to December in Wenling seashore, Zhejiang. The results showed that the quantity dynamics of Vibrio in rearing water were significantly different among ponds (P<0.05), but the quantity dynamics of heterotrophic bacteria were not. In addition, no significant differences were observed in heterotrophic bacteria number in sediment among ponds, but the changes of Vibrio number presented significant differences between different ponds (P<0.05). Significant difference of heterotrophic bacteria quantity were observed in Cyclina sinensis cavity fluid among samples from the same pond but collected at different time (P<0.01), and similar results was observed in the Vibrio quantity (P<0.05). The changes of heterotrophic bacteria and Vibrio number in water showed a significant positively correlation (r=0.335,P<0.05), while they showed a significant positively correlation (r=0.587,P<0.01) in sediment samples; but there were no significant correlation between culture density and heterotrophic bacteria and Vibrio in water and sediment; Culture density and the changes of heterotrophic bacteria number in Cyclina sinensis showed a significant negative correlation (r=-0.189,P<0.01), and culture density and the changes of Vibrio number in Cyclina sinensis cavity fluid showed a significant negative correlation (r=-0.123,P<0.01).

Key words: Cyclina sinensis, heterotrophic bacteria, Vibrio

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