Length--Weight Relationship and Condition Factor of Botia dario (Hamilton) from Gumti River of Tripura, India
Length--Weight Relationship and Condition Factor of Botia dario (Hamilton) from Gumti River of Tripura, India
Date
2012
Authors
Choudhury, T. G.
Das, A.
Battacharjee, P.
Debnath, B.
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Fisheries Technologists (India)Cochin
Abstract
Total sample was divided into two groups based on
their length. Length-weight equations, condition
factor (K) and relative condition factor (Kn) of these
two groups are presented in Table 2. Le Cren (1951)
and Jhingran (1972) observed that changes in the
condition value with the increase in length may
yield evidence concerning the size at first maturity.
In its variation with the increasing length, the ‘K’
value (1.30) in B. dario showed a peak at length
group II (70-90 mm) whereas ‘K’ value is lower viz.,
1.23 in length group I (50-70 mm). From this, it canbe indicated that middle age group has better
condition factor. Many researchers (Verghese, 1961;
Mortuza & Rahman, 2006; Saha et al., 2009; Dars et
al., 2010) have also observed higher ‘Kn’ values in
middle age group of freshwater and marine species.
In case of B. dario, the ‘Kn’ value is less than 1
indicating general well being of the fish; its relative
robustness, sustainability of habitat and to some
extent the size at first maturity and peak period of
spawning (Goswami et al., 2008).
Description
Keywords
Length--Weight Relationship, Condition Factor , Botia dario (Hamilton) , Gumti River of Tripura, India
Citation
Fishery Techn 49(2):215-218