International Journal of Fisheries and Aquatic Studies
2017, Vol. 5, Issue 3, Part G
Length-weight relationship and relative condition factor of some hill stream fishes, IndiaAuthor(s):
Upendra Singh and Prakash NautiyalAbstract:
Knowledge of some quantitative aspects such as length-weight relationship is important in fishery science. During present study four fish species were studied from different streams for length-weight relationship and relative condition factor. The regression coefficient (b) was unique for each species in each stream. It was lower in the streams of smaller dimensions and higher in the streams of larger dimension; P. conchonius
low in Suswa Mothoronwala, high in Asan Chakmansa, B. bendelisis
low in Henwal at Khadi,
high in Asan at Dharmawala,
and T. putitora
low in Shyampur Khadri Nala,
high in Khoh at Kotdwar.
However, low and high ‘b’ values for S. rupecola
could not be explained on similar grounds because the dimensions of the brooks did not differ. The b value helped to determine allometric or isometric growth in these fishes. B. bendelisis
shows isometric growth in all streams while P. conchonius, T. putitora
and S. rupecola
shows both isometric and allometric growth in different streams. In most of the cases the relationship followed cube law. The Kn values ranged from 0.790 to 1.447 for B. bendelisis,
0.713 to 1.627 for T. putitora
, 0.366 to 1.868 for P. conchonius
and 0.211 to 1.754 for S. rupecola.
The highest variation in the Kn value was observed for P. conchonius
at SuM and S. rupecola
at Dhundseer Teen Chhade which may be attributed to varied environmental conditions of the streams inhabited by them.Pages: 525-529 | 880 Views 18 DownloadsDownload Full Article:
How to cite this article:
Upendra Singh, Prakash Nautiyal. Length-weight relationship and relative condition factor of some hill stream fishes, India. Int J Fish Aquat Stud 2017;5(3):525-529.