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首页> 外文期刊>Aquaculture International >Colonization of enzymatic bacterial flora in biofloc grown shrimp Penaeus vannamei and evaluation of their beneficial effect
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Colonization of enzymatic bacterial flora in biofloc grown shrimp Penaeus vannamei and evaluation of their beneficial effect

机译：生物植物生长虾Penaeus vannamei中酶菌细菌植物菌的定植及其有益效果的评价

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摘要

Experiments were conducted to explore the colonization of beneficial bacteria in shrimp Penaeus vannamei grown in different sources of biofloc and clear water. Beneficial effect in terms of extracellular enzyme production and antibiofilm activity of the isolated strains was determined. Heterotrophic bacterial population were isolated by using different agar plates and resulted in isolation of 94 isolates in total. Extracellular enzyme production such as amylase, protease, lipase, cellulase, xylanase, and pectinase were screened. Antibiofilm activity of culture supernatants of enzymatic strains against pathogenic Vibrio was also determined. Out of 94 strains screened, 36 strains were found to produce amylase enzyme, 20 strains protease, 27 strains lipase, 6 strains cellulase, and 8 strains xylanase. Totally, 21 isolates selected for further identification and different species of Cobetia, Exiguobacterium, Bacillus, Marinilactibacillus, Staphyllococcus, and Novosphingobium genera from biofloc treatments were identified. In control group animals, strains of Bacillus and Exiguobacterium were isolated and identified. The genus Exiguobacterium was found common in all the different treatments and control. The result showed that shrimp grown on biofloc system allows colonizing more beneficial bacteria in gut than control. Few promising strains under Bacillus genus were found to produce all the extracellular enzymes along with antibiofilm activity.
机译：进行了实验以探讨在生物氟化和透明水中种植的虾Penaeus Vannamei中有益细菌的定植。确定了在细胞外酶产生和分离株的抗生素活性方面的有益效果。通过使用不同的琼脂平板分离异养细菌群，并总共产生94个分离物。筛选细胞外酶生产，例如淀粉酶，蛋白酶，脂肪酶，纤维素酶，木聚糖酶和果胶酶。还测定了酶促菌株免受致病弧菌培养上清液的抗生素活性。在94个菌株中筛选出来，发现36个菌株产生淀粉酶，20株蛋白酶，27株脂肪酶，6株纤维素酶和8株菌株木聚糖酶。鉴定了21例分离物，用于进一步鉴定和不同种类的鹅卵石，外杆菌，枯草芽孢杆菌，马赛克波菌，葡萄球菌和从生物氟化处理中的新亚亚磷昔氨酸。在对照组动物中，分离并鉴定芽孢杆菌和外杆菌的菌株。在所有不同的治疗和对照中发现外偶联常见。结果表明，生物活地系统上生长的虾允许在肠道中定植更有益的细菌。发现芽孢杆菌属的有很少有希望的菌株与抗抗氧化铝活性一起产生所有细胞外酶。

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  • 来源
    《Aquaculture International》 |2019年第6期|共12页
  • 作者

    Panigrahi Akshaya; Esakkiraj Palanichamy; Jayashree Sundaresan; Saranya Chakrapani; Das Rashmi Ranjan; Sundaram Mani;

  • 作者单位

    ICAR Cent Inst Brackishwater Aquaculture Crustacean Culture Div 75 Santhome High Rd Chennai 600028 Tamil Nadu India;

    ICAR Cent Inst Brackishwater Aquaculture Crustacean Culture Div 75 Santhome High Rd Chennai 600028 Tamil Nadu India;

    ICAR Cent Inst Brackishwater Aquaculture Crustacean Culture Div 75 Santhome High Rd Chennai 600028 Tamil Nadu India;

    ICAR Cent Inst Brackishwater Aquaculture Crustacean Culture Div 75 Santhome High Rd Chennai 600028 Tamil Nadu India;

    ICAR Cent Inst Brackishwater Aquaculture Crustacean Culture Div 75 Santhome High Rd Chennai 600028 Tamil Nadu India;

    ICAR Cent Inst Brackishwater Aquaculture Crustacean Culture Div 75 Santhome High Rd Chennai 600028 Tamil Nadu India;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 水产、渔业;
  • 关键词

    Biofloc; Shrimp; Enzymatic bacteria; Protease; Amylase; Lipase;

    机译：Biofloc;虾;酶促细菌;蛋白酶;淀粉酶;脂肪酶;

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