Variation of bacteria numbers in fish-shrimp mix-culturing ecosystem

Abstract

Abstract: The study on variation of bacteria numbers in Penaeus chinensis-fish mix-culturing ecosystem in 1997. Indicated that at the beginning of culturing season,total number of heterotrophic bacteria and that of nitrate-reducing bacteria in mix-culturing ponds was low,but it was higher than that in mono-culturing shrimp pond. With time going on,the number of bacteria in mono-culturing pond increased rapidly and remained at a high level in August and September,an that in mix-culturing ponds also increased. But the latter increased slowly,and it was never over 10⁴ cells·ml^-1 and dropped in September. Number of bacteria in bottom of the ponds varied with the similar regulation,but the numbers was 10～100 times higher. The numbers of vibrio in mix-culturing ponds was always lower than that in contrastive pond at the same time. So,in fish-shrimp mix-culturing ponds,the contents of organic matter were lower and the total amount and variability of phytoplankton were higher than corresponding items in mono-culturing pond.It was concluded that mix-culture could stimulate and control the growth of heterotrophic bacteria,accelerate the degradation of organic pollutants,consequently fasten and stabilize the circulation of mater in ecosystem of ponds in culturing season.

Key words: Fish-shrimp mix-culture, Penaeus chinensis, Aquaculture ecosystem, Bacteria, rhizosphere, nitrogen application rate, soil enzyme activities, inorganic nitrogen.

CLC Number:

Q178.1

LI Qiufen, CHEN Bijuan, QU Keming, YUAN Youxian, LI Jian, SUN Xiutao, ZHAO Fazhen . Variation of bacteria numbers in fish-shrimp mix-culturing ecosystem[J]. Chinese Journal of Applied Ecology, 2002, (6): 731-734.

References

[1] Betlach MR.1982.Evolution of bacterial denitrification and denitrifier diversity.Antonie Leeuwenhoek,48:585～607
[2] Gao S-D(高尚德),Chen X-R(陈旭仁),Wu Y-P(吴以平).1994.Variation of total bacteria number in shrimp pond waters amd substrate during the adult culture of Penaeus chinensis.J Fish China(水产学报),18(2):138～142(in Chinese)
[3] Guo P(郭平),Xu M-M(许美美).1994.The bacterial variation in the water environment of cultured prawn ponds.Oceanol et Limnol Sin(海洋与湖沼),25(6):625～630(in Chinese)
[4] Huang J(黄促捷),Song X-L(宋晓玲),Yu J(于佳),et al.1995.Baculoviral hypodermal and hematopoietic necrosis-study on the pathogen and pathology of the explosive epidemic disease of shrimp.Mar Fish Res(海洋水产研究),16(1)1～10(in Chinese)
[5] Knowles R.1982.Denitrification.Microbiol Rev,46:43～70
[6] Li F-D(李福东),Zhang C(张诚),Zou J-Z(邹景忠).1998.Role of bacteria in the growth process of phytoplankton.Mar Sci(海洋科学),9(6):31～33(in Chinese)
[7] Lin W(林伟),Chen D(陈马马).1998.Significance of study on microalgae-bacterial relationship in mariculture.Mar Sci(海洋科学),9(4):34～37(in Chinese)
[8] Liu G-C(刘国才),Li D-S(李德尚),Dong S-L(董双林),et al.2000.Numerical dynamics of sediment bacteria in shrimp polycultural ecosystems.Chin J Appl Ecol(应用生态学报),11(1):138～140(in Chinese)
[9] Qu K-M(曲克明),Chen B-J(陈碧鹃),Li Q-F(李秋芬),et al.1999.The effect of synchronous farming of fish and shrimp on the environment of aquacuture system.J Fish China(水产学报),23(supp.):39～45(in Chinese)
[10] Shi J-Y(石俊艳),Liu Z(刘中),Wang D(王丹),et al.1998.The variation of bacteria in the water of cultured prawn ponds in Ying-kou and Panjin area.Aquacul Sci(水产科学),(6):6～8(in Chinese)
[11] State Oceanic Administration of China(国家海洋局).1991.Regulation of Oceanic Investigation.Beijing: China Ocean Press.(in Chinese)
[12] State Oceanic Administration of China (国家海洋局).1991.Regulation of Oceanic Mornitoring.Beijing: China Ocean Press.(in Chinese)
[13] Xu B(许兵),Xu H-S(徐怀恕).1992.Comparison of some bacteria accounting methods.J Ocean Univ Qingdao(青岛海洋大学学报),22(3):43(47(in Chinese)
[14] Zhao Z-Y(赵增元),Li T-B(李天保),Guo W(郭文),et al.1994.Study on influence of sediment mud to water envionment of shrimp ponds and improving method.Mar Sci(海洋科学),5(3):5～8(in Chinese)
[15] Zhong S-L(钟硕良),Chen Y-Z(陈月忠),Lin K-B(林克冰),et al.1997.Studies on variations of contets of NH₄⁺-N,S2- and heteriotrophic bacteria in substrate of shrimp ponds and their correlations.J Oceanogr Taiwan Strait(台湾海峡),16(4):449～454(in Chinese)
[16] Zhu D-F(朱德芬),Cai X-B(蔡兴邦).1995.Exploration of Acanthopagrus schlegeli mix-culture with shrimp in shrimp ponds.Aquaculture(水产养殖),5(6):24～25(in Chinese)