Aeromonas jandaei and Aeromonas veronii caused disease and mortality in Nile tilapia, Oreochromis niloticus (L.)

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Dong H.T., Techatanakitarnan C., Jindakittikul P., Thaiprayoon A., Taengphu S., Charoensapsri W., Khunrae P., Rattanarojpong T., Senapin S.

ผู้เผยแพร่: Wiley

ปีที่เผยแพร่ (ค.ศ.): 2017

วารสาร: Journal of Fish Diseases (0140-7775)

Volume number: 40

Issue number: 10

หน้าแรก: 1395

หน้าสุดท้าย: 1403

จำนวนหน้า: 9

นอก: 0140-7775

eISSN: 1365-2761

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85017196334&doi=10.1111%2fjfd.12617&partnerID=40&md5=deda12dd5862282e2eb2c37a387ad1a3

ภาษา: English-Great Britain (EN-GB)

ดูในเว็บของวิทยาศาสตร์ | ดูบนเว็บไซต์ของสำนักพิมพ์ | บทความในเว็บของวิทยาศาสตร์

บทคัดย่อ

Diseases caused by motile aeromonads in freshwater fish have been generally assumed to be linked with mainly Aeromonas hydrophila while other species were probably overlooked. Here, we identified two isolates of non-A. hydrophila recovered from Nile tilapia exhibiting disease and mortality after exposed to transport-induced stress and subsequently confirmed their virulence in artificial infection. The bacterial isolates were identified as Aeromonas jandaei and Aeromonas veronii based on phenotypic features and homology of 16S rDNA. Experimental infection revealed that the high dose of A. jandaei (3.7 × 106 CFU fish−1) and A. veronii (8.9 × 106 CFU fish−1) killed 100% of experimental fish within 24 h, while a 10-fold reduction dose killed 70% and 50% of fish, respectively. When the challenge dose was reduced 100-fold, mortality of the fish exposed to A. jandaei and A. veronii decreased to 20% and 10%, respectively. The survivors from the latter dose administration were rechallenged with respective bacterial species. Lower mortality of rechallenged fish (0%–12.5%) compared to the control groups receiving a primary infection (37.5%) suggested that the survivors after primary infection were able to resist secondary infection. Fish exposed to either A. jandaei or A. veronii exhibited similar clinical signs and histological manifestation. © 2017 John Wiley & Sons Ltd

คำสำคัญ

Nile tilapia, virulence