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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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    Abstract - Issue July 2023, 44 (4)                                     Back


nstantaneous and historical temperature effects on a-pinene

Salinity induced changes in growth and gill structure of

freshwater carp, Cyprinus carpio Linn.

 

G. Singh1, M.D. Ansal2*, A.H. Shanthanagouda2, V.I. Kaur1 and N. Bansal3   

 

1Department of Aquaculture, College of Fisheries, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana-141 004, India

2Department of Aquatic Environment, College of Fisheries, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana-141 004, India 3Department of Vety. Anatomy and Histology, College of Veterinary Sciences, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana-141 004, India

*Corresponding Author Email : ansalmd@gmail.com                  *ORCiD: https://orcid.org/0000-0003-3511-983X

 

Received: 13.06.2021                                                                                           Revised: 12.02.2022                                                                            Accepted: 01.02.2023

 

 

Abstract

Aim: The present study was carried out to evaluate salinity induced changes in the growth and gill structure of cosmopolitan freshwater carp, Cyprinus carpio (Linn.).

Methodology: Inland saline water (15 ‰ or g l-1) was collected from the salt affected waterlogged areas of village Shajrana (30.3346 0N, 74.1196 0E) in District Fazilka, Punjab (India) and diluted with underground freshwater for preparing different salinity levels (2 to 10 ‰). Fingerlings (10 ±2 cm) of C. carpio were exposed to 0 (control), 2, 4, 6, 8 and 10 ‰ salinity after gradual acclimatization with salinity increase @ 1 ‰ hr-1.

Results: At the end of 120 days of rearing under saline conditions, 100% fish survival was observed up to 6 ‰ salinity, while 86.66 and 70.00% survival was recorded in 8 and 10 ‰, respectively. However, fish growth declined significantly at all salinity levels (p≤0.05). Gill structure was also affected at all salinity level, but pronounced changes were observed at salinity levels ≥ 6 ‰, including lamellar oedema, epithelial lifting, lamellar hyperplasia, hypertrophy, lamellar fusion, hyalinisation, aneurysm, blood congestion, etc.

Interpretation: The results offer referral database to explore optimised economic production of common carp in inland saline areas of the region at salinity levels below 6 ‰.

Key words: Carp, Gills, Growth, Production, Salinity, Survival

 

 

 

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