2 Materials and Methods
The entire network of the present study consists of the collection of 100 individuals
of the selected species (T. ilisha, Pama pama, Pampus spp., Ilisha elongate, L.
calcarifer, P. pangasius, Liza parsia, Liza tade, Tenualosa toli, P. paradiseus, O.
biauritus, Tachysurus jella, Sciaena biauritus, Eleutheronema tetradactylum) from
the two major estuaries in the study area namely Hooghly (in the western sector)
and Matla (in the central sector). The sampling stations selected for the present
study are Diamond Harbour (in the Hooghly estuary) and Canning (in the Matla
estuary). Individual length and weight of the individuals of the selected species
were measured to evaluate the condition factor (Chow and Sandifer 1991) as per the
following expression:
K ¼
w
ðTLÞ
3
 10
3
where K is the condition factor,
w is the average weight (g) and TL is the average
total length (cm).
The secondary data of surface water salinity were obtained from the data bank
cited by Ray Choudhury et al. (2014), Chakraborty et al. (2013), Mitra (2013),
Sengupta et al. (2013), Mitra and Zaman (2014) and Mitra and Zaman (2015).
3 Results
It is evident that condition factor is relatively higher for the fin fish species collected
from the Hooghly estuary compared to those collected from the Matla estuarine
water (Table 1). This may be attributed to variation in aquatic salinity as evidenced
from the secondary data bank. The Hooghly estuarine water is relatively hyposaline
as compared to the water of Matla estuary in the central sector of the study area
(Figs. 1 and 2).
Monitoring Condition Factor of the Dominant Fin Fishes …
349
The entire network of the present study consists of the collection of 100 individuals
of the selected species (T. ilisha, Pama pama, Pampus spp., Ilisha elongate, L.
calcarifer, P. pangasius, Liza parsia, Liza tade, Tenualosa toli, P. paradiseus, O.
biauritus, Tachysurus jella, Sciaena biauritus, Eleutheronema tetradactylum) from
the two major estuaries in the study area namely Hooghly (in the western sector)
and Matla (in the central sector). The sampling stations selected for the present
study are Diamond Harbour (in the Hooghly estuary) and Canning (in the Matla
estuary). Individual length and weight of the individuals of the selected species
were measured to evaluate the condition factor (Chow and Sandifer 1991) as per the
following expression:
K ¼
w
ðTLÞ
3
 10
3
where K is the condition factor,
w is the average weight (g) and TL is the average
total length (cm).
The secondary data of surface water salinity were obtained from the data bank
cited by Ray Choudhury et al. (2014), Chakraborty et al. (2013), Mitra (2013),
Sengupta et al. (2013), Mitra and Zaman (2014) and Mitra and Zaman (2015).
3 Results
It is evident that condition factor is relatively higher for the fin fish species collected
from the Hooghly estuary compared to those collected from the Matla estuarine
water (Table 1). This may be attributed to variation in aquatic salinity as evidenced
from the secondary data bank. The Hooghly estuarine water is relatively hyposaline
as compared to the water of Matla estuary in the central sector of the study area
(Figs. 1 and 2).
Monitoring Condition Factor of the Dominant Fin Fishes …
349