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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
For more details click here

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Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2021.10(8): 500-509
DOI: https://doi.org/10.20546/ijcmas.2021.1008.060


Temperature Accelerates Photoperiod Mediated Testicular Maturity in Clarias magur (Hamilton, 1822)
Srijit Chakravarty1, N. K. Chadha1, B. K. Mahapatra2,Paramita Bannerjee Sawant1 and Subrata Dasgupta2*
1Department of Aquaculture, ICAR- Central Institute of Fisheries Education,Versova, Mumbai - 400061, India
2ICAR- Central Institute of Fisheries Education Kolkata Centre, Kolkata – 700091, India
*Corresponding author
Abstract:

In teleost fishes exhibiting circadian rhythm in their breeding behavior, the major determinants controlling the annual reproductive cycle are the Photoperiod and temperature. Manipulation of these two parameters can cause significant changes in the gonadal maturity of the air breathing as well as non-air breathing fishes and is widely documented. In this study, male Clarias magur individuals (n=150) were subjected to different combinations of photoperiod, ambient and above ambient temperature to see their effect on the gonadal maturity status of the fishes in early recrudescent phase (February- March). Combination of long photoperiod (14L: 10 D) and above ambient temperature (28 ºC) has a profound effect on the gonadal maturity of the male Clarias magur which is exhibited by significant changes in GSI, SVSI and gonadal histology. This study shows it is possible to get mature male Clarias magur individuals in as early as in the month of April or May, using a very very simple farmer friendly setup, to start the breeding cycle before the monsoon arrives.


Keywords: Clarias magur, Male maturity, Photoperiod, Above ambient Temperature, Histology
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How to cite this article:

Srijit Chakravarty, N. K. Chadha, B. K. Mahapatra, Paramita Bannerjee Sawant and Subrata Dasgupta. 2021. Temperature Accelerates Photoperiod Mediated Testicular Maturity in Clarias magur (Hamilton, 1822).Int.J.Curr.Microbiol.App.Sci. 10(8): 500-509. doi: https://doi.org/10.20546/ijcmas.2021.1008.060