|
Distribution of pathogen
in the Bohai sea in spring and summer
Peng Zaiqing1*, Zhuang Zhixia2,
Huang Rongfu2 and Lu Zhiqiang1
1National
Key Laboratory for Marine Environmental Sciences, Xiamen
University, Xiamen 361005, P. R. China.
2The
Key Laboratory of Analytical Sciences of MOE and Department
of Chemistry, Xiamen University, Xiamen 361005, P. R. China.
*Corresponding author. E-mail:
pengzaiqing@sina.com.
Tel: +86592-2184510.
Accepted 2 June, 2010 |
|
The aquicultural pathogen Vibrio spp. is popular and
harmful to mariculture animals and even resulted in human
enterogastrtis. However, little is known about the abundance
and distribution of marine pathogen in Bohai Sea. In the
present study, the distributions of the typical pathogens,
including Escherichia Coli, Vibrio
parahaemolyticus, Vibrio alginolyticus, Vibrio fluvialis
and Vibrio harviyi, were investigated using protein
micro array method from the Bohai Sea samples, which
collected in spring and summer in 2005, respectively. The
results showed that: (1) Temporally, the tested typical
pathogens were more abundant in summer than in spring, as
supported by the total pathogenic Vibrios averaged
3.05 × 104/L in spring while 2.48 × 105/L
in summer; (2) Spatially, in summer, pathogenic Vibrios
in Bohai Bay was 4.87, 10.52 and 7.15 times higher than that
in Liaodong Bay, Laizhou Bay and Central Bohai Sea,
respectively (p = 0.034, 0.013 and 0.012, respectively). (3)
Total pathogenic Vibrios in coastal area was 4.68
times higher than that in central area (p = 0.0279 < 0.05),
showing a decline trend in abundance. (4) All the pathogenic
Vibrios varied between spring and summer, with
greatest variance in V. fluvialis. Both V.
parahaemolyticus and V. harveyi had no
significant variances. Bohai Bay was heavily polluted and
relatively not fit for mariculture. V. fluvialis
dominated in Bohai Sea and was a possible major pathogen of
vibriosis.
Key words:
Bohai sea, protein micro array, pathogenic Vibrio. |
