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Changes in the microbial community ofLitopenaeus vannameilarvae and rearing water during different growth stages after disinfection treatment of hatchery water

文献类型： 外文期刊

作者： Duan, Yafei 1 ; Tang, Yapeng 1 ; Huang, Jianhua 1 ; Zhang, Jiasong 1 ; Lin, Heizhao 1 ; Jiang, Shigui 2 ; Wang, Ruixua 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Shenzhen Base South China Sea Fisheries Res Inst, Shenzhen 518121, Peoples R China

2.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Key Lab South China Sea Fishery Resources Exploit, Minist Agr & Rural Affairs,Guangdong Prov Key Lab, Guangzhou 510300, Peoples R China

3.Hainan Acad Ocean & Fisheries Sci, Haikou 571126, Hainan, Peoples R China

关键词： chemical disinfectants; growth stages; Litopenaeus vannameilarvae; microbial community; water

期刊名称：JOURNAL OF MICROBIOLOGY （ 影响因子：3.422； 五年影响因子：3.28 ）

ISSN： 1225-8873

年卷期： 2020 年 58 卷 9 期

页码：

收录情况： SCI

摘要： Microbial communities greatly affect rearing water quality and the larvae health during shrimp hatchery periods. In this study, we investigated the microbial communities of rearing water and larvae ofLitopenaeus vannameiafter treating hatchery water with different kinds of chemical disinfectants: no disinfectants (Con), chlorine dioxide (ClO2), formaldehyde solution (HCHO), bleach powder (CaClO), and iodine (I-2). The water and larval samples were collected from nauplius 6 (N6), zoea 1 (Z1), mysis 1 (M1), and postlarvae 1 (P1) shrimp growth periods. 16S rDNA high-throughput sequencing revealed that the bacterial composition of the rearing water was more complex than that of the larvae, and the bacterial community of the rearing water and the larvae fluctuated significantly at the P1 and Z1 periods, respectively. Disinfectants altered the bacterial diversity and composition of the rearing water and larvae. Specifically, in the rearing water of the P1 period, Proteobacteria abundance was increased in the HCHO group; while Bacteroidetes abundance was decreased in the ClO2, HCHO, and I(2)groups but increased in the CaClO group. In the larvae of the Z1 period, Firmicutes (especially Bacillus class) abundance was increased in the CaClO group, but decreased in the ClO2, HCHO, and I(2)groups. Network analyses revealed that the generaDonghicola, Roseibacterium, Candidatus-Cquiluna, andNautellawere enriched in the rearing water, whileHalomonas, Vibrio, andFlavirhabdushad high abundance in the larvae. The survival of shrimp was influenced by disinfectants that were inconsistent with the bacterial community changes. These results will be helpful for using microbial characteristics to facilitate healthy shrimp nursery.

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