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369252

MICROBIOLOGICAL STUDIES ON CHARACTERISTICS OF STREPTOCOCCUS INIAE ISOLATED FROM DISEASED TILAPIA NILOTICA AND AQUATIC ENVIRONMENTS

Article

Last updated: 03 Jan 2025

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Subjects

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Tags

Bacteriology and bacterial diseases

Abstract

Seventy-eight isolates of Streptococcus inte were recovered from 200 diseased brackish water Oreochromis niloticus (Nile tilapia) fish with an incidence of 86.7% of the total number of isolated Streptococcus species. To investigate the effect of nitrite, alkaline pH, salinity and water temperature on the susceptibility of Oreochromis niloticus (Nile tilapia) to streptococcosis; ten water sam- ples were collected and the results obtained were as follows: nitrite concentration was 3.2 ug/L wa- ter. pH was 8.2, salinity was 18 ppt (part per thou- sand) and water temperature was 26±2°C. environmentally stressed and experimentally infected fish showed mortality rate of 73.3% compared with a mortality rate of 46.6% in non- environmentally stressed fish. In the meantime, LD50 values for S. Iniae were 1 x 105.1 cfu/ml for environmentally stressed fish compared with Ix 105.5 cfu/ml for non-stressed tilapia.

DOI

10.21608/vmjg.2002.369252

Authors

First Name

L

Last Name

RADWAN

MiddleName

-

Affiliation

Bacteriology, Mycology and Immunology Department

Email

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City

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Orcid

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Volume

50

Article Issue

2

Related Issue

49347

Issue Date

2002-04-01

Receive Date

2024-07-25

Publish Date

2002-04-01

Page Start

273

Page End

297

Print ISSN

1110-1423

Online ISSN

2537-1045

Article File

VMJG_Volume 50_Issue 2_Pages 273-297.pdf

PDF . 2.2MB

Link

https://vmjg.journals.ekb.eg/article_369252.html

Detail API

https://vmjg.journals.ekb.eg/service?article_code=369252

Order

369,252

Type

Original Article

Type Code

544

Publication Type

Journal

Publication Title

Veterinary Medical Journal (Giza)

Publication Link

https://vmjg.journals.ekb.eg/

MainTitle

MICROBIOLOGICAL STUDIES ON CHARACTERISTICS OF STREPTOCOCCUS INIAE ISOLATED FROM DISEASED TILAPIA NILOTICA AND AQUATIC ENVIRONMENTS

Details

Type

Article

Created At

23 Dec 2024