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256741

Biochemical Components, Immune Characteristics and Antimicrobial Activity of Epidermal Mucus of the Three Indian Major Carp Species

Article

Last updated: 01 Jan 2025

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Abstract

Fish live in an environment that is full of phylogenetically diverse collections of bacterial pathogens. Fish epidermal mucus is regarded as a barrier between fish and infectious microorganisms in their surroundings protecting it against pathogens. The current study aimed to evaluate the biochemical components of skin mucus, mucosal immunity, and the bactericidal effect of epidermal mucus in three carp species, including Catla catla, Labeo rohita, and Cirrhinus mrigala. Biochemical composition showed the presence of protein, carbohydrate and lipid in the mucus of all three carp species, and concentration varied with respect to species. Protein and lipid were higher in C. catla, followed by L. rohita and C. mrigala; whereas, carbohydrate was high in the mucus of C. mrigala. Mucosal immunity indicating parameters, viz. lysozyme, alkaline phosphatase, myeloperoxidase, and protease activity was observed in the epidermal mucus of these species, showing the role of mucus in immunity. Lysozyme and alkaline phosphatase were high in C. mrigala, and myeloperoxidase and protease were high in C. catla. To understand the bactericidal role of raw and aqueous mucus, extracts of the epidermis of these species were tested against the common fish pathogen Aeromonas hydrophila by a well diffusion assay. The results showed that raw as well as aqueous extracts showed the zone of inhibition (ZOI) against A. hydrophila; however, ZOI was high for raw mucus compared to aqueous extract. The variation in biochemical composition and mucosal immunity parameters may be due to variation in their habitat, ecological niche, and the presence of pathogens in the surrounding medium.

DOI

10.21608/ejabf.2022.256741

Keywords

antimicrobial activity, biochemical components, Carp species, Defense, Fish skin mucus, innate immunity

Authors

First Name

Anita

Last Name

Bhatnagar

MiddleName

-

Affiliation

-

Email

anitabhatnagar@gmail.com

City

-

Orcid

0000-0002-0159-4096

First Name

Kirti

Last Name

Budhalia

MiddleName

-

Affiliation

-

Email

kirtibudhalia09@gmail.com

City

-

Orcid

-

Volume

26

Article Issue

4

Related Issue

35549

Issue Date

2022-07-01

Receive Date

2022-08-29

Publish Date

2022-07-01

Page Start

1,273

Page End

1,288

Print ISSN

1110-6131

Online ISSN

2536-9814

Article File

EJABF_Volume 26_Issue 4_Pages 1273-1288.pdf

PDF . 1.1MB

Link

https://ejabf.journals.ekb.eg/article_256741.html

Detail API

https://ejabf.journals.ekb.eg/service?article_code=256741

Order

73

Type

Original Article

Type Code

103

Publication Type

Journal

Publication Title

Egyptian Journal of Aquatic Biology and Fisheries

Publication Link

https://ejabf.journals.ekb.eg/

MainTitle

Biochemical Components, Immune Characteristics and Antimicrobial Activity of Epidermal Mucus of the Three Indian Major Carp Species

Details

Type

Article

Created At

22 Jan 2023