International Journal of Marine Science, 2017, Vol.7, No.39, 380-385
381
kanagurta
(Indian mackerel) is commonly harvested throughout shallow waters of Pakistani coastal area
(Moazzum et al., 2005). In Pakistan fish consumption is low due to socio economic factors. Peoples prefer low
prices large fishes as compared to costly small size fishes. The principal biochemical constituents of fish are
protein, lipid, carbohydrates, ash, moisture and water. The aim of the present study was to obtain the biochemical
composition of
Liza vaigiensis
,
Rastrelliger kanagurta
and
Scomberoides tol
found in the coastal water of
Balochistan.
1 Materials and Methods
Total twelve individuals of three species of fishes
Liza vaigiensis,
Rastrelliger kanagurta
and
Scomberoides tol
were collected during surveys of fish harbor Dam Sonmiani Balochistan coast in February, 2017 (Figure 1).
Sonmiani is one of the Tehsils of District Lasbela, located 80 km North West of Karachi and consisting of Dam
Bunder, Sonmiani Tower Bhira and Baloch Goth. The sampling was done by using net having mesh size of
approximately 2 cm
2
with the assistance of local fishermen. The fishes were put in iced box and brought to
laboratory, where species identification, body measurement and biochemical analysis on dry weight basis were
carried out. First specimens were identified with the help of FAO (1985) identification guide book. Total three
species of fishes have been collected belonging to
Mugilidae,
Scombridae and
Carangidae families. The
measurement (total length with tail, standard length and width) and weight (dry and wet) of each specimen were
also taken with the help of measurement tape and digital balance respectively.
Figure 1 Map showing satellite view of Miani Hor (Dam)
The fish samples were dried at 70
o
C for 24 hours till a constant weight was achieved. The samples were then
homogenized with a porcelain pestle and mortar to a powder form, sieved and stored in plastic bottle until further
analysis for biochemical parameters. The carbohydrate was estimated by using phenol sulphuric acid method
(Dubois et al., 1956). The concentration of proteins was determined by Lowry’s method (1951) whereas the total
lipid was extracted by soxhlet extraction method (Folch et al., 1957). Ash or total inorganic content and moisture
were also determined by the standard method of A.O.A.C (1990).
2 Results and Discussion
The total length with tail, standard length and width of
Scomberoides tol
was greater than the other two species
Liza vaigiensis
and
Rastrelliger kanagurta
(Table 1). The mean total length with tail of
Scomberoides tol
was
10.8± 0.2 cm and both
Liza vaigiensis
8.7± 0.23 cm and
Rastrelliger kanagurta
have 8.7± 0.1 cm whereas
standard mean length of
Scomberoides tol
was 9.6±0.34 cm and both
Liza vaigiensis
and
Rastrelliger kanagurta
have 8.4±0.22 cm and 8±0.2 cm respectively. The width of
Scomberoides tol
was 3.2±0.23 cm and both
Liza
vaigiensis
and
Rastrelliger kanagurta
have 2.5±0.24 cm and 2.5±0.34 cm respectively.
The mean fresh weight of
Scomberoides tol
(164± 2.22 g) was also greater than the other two species
Liza
vaigiensis
(140±2.4 g) and
Rastrelliger kanagurta
(122±2.13 g) like size (Table 2). Whereas mean dry weight
of
Scomberoides tol
was (48±2.8 g)
Liza vaigiensis
(38±2.11 g) and
Rastrelliger kanagurta
(32±2.0 g). The water
