Earlier studies have documented 124 species of birds [4][5][6][7] at Nandankanan Wildlife Sanctuary (Figure 1) in the state Odisha, eastern India. The present communication reports additional 46 species of the birds sighted and/or photo-documented during the study period (Table 1), (Figure 2). Detailed study is needed to find out any additional species available, their seasonal migration, feeding and breeding biology.
Journal homepage: http://www.ijcmas.com Study was conducted for 90 days to know the effect of varying water alkalinity in production of stunted fingerlings of Catla catla in outdoor FRP tanks (1000 litre). Tanks filled up to 800 litre marks were grouped into three triplicated treatments and were stocked with catla seed (3.9g, 67±0.27mm) at 16nos per tank (20m -3 ). Three alkalinity levels, i.e. 80, 150 and 200 mg CaCO 3 L -1 were used and designated as Control, T-1 and T-2, respectively. Pond water (80 mgL -1 ) and bore well water (360 mgL -1 ) were used as the two sources to get the desired alkalinity level. Fishes were fed with powdered feed @ 8% of their respective biomass in all the treatments. The survival of catla decreased significantly (p<0.05) with the increase in alkalinity from control (97.92±3.61%) to T2 (89.58±3.61%). The average harvested body weight and length in T-1 (8.83±0.40g, 8.73±0.17cm) and T-2(8.28±0.19g, 8.65±0.10cm) were similar (p>0.05), but both were significantly lower than the control (9.64±0.12g, 9.02±0.02cm). Similarly, specific growth rate of T1 (0.91±0.05) and T2 (0.84±0.03) were similar and significantly lower than control (1.01±0.01). The biomass yield also reduced significantly with increase in alkalinity from control (151.00±4.63g) followed by T1 (132.43±6.06g) and T2 (118.77±7.56g). Such results indicated pronounced effect of increased alkalinity on suppressing fish growth and suggested possibility of manipulating this parameter as a tool for stunting of catla seed.
The present investigation was carried out for comparative evaluation of two commonly used synthetic hormones ovaprim and Wova-FH on induced breeding response of Anabas testudineus (Bloch). Both the hormones are administered at a rate of 0.2, 0.3 and 0.4 ml/kg body weight of the fish to find out their effect on breeding response, latency period, quantity of eggs released, fertilization and hatching rate. The study reveals that, both the inducing agents administered at a rate of 0.4 ml/kg body weight to Anabas testudineus resulted with complete spawning. The fertilization and hatching percentages were reported to be more when brooders are administered with ovaprim than that of Wova-FH. The study further indicates a strong correlation to exist between the doses of ovaprim with egg output (+0.99), fertilization rate (+0.99), hatching rate (+0.99), spawn production (+0.99). A negative correlation was reported to exist between the doses of ovaprim with latency period (-0.99) and hatching time (-0.90) which indicates that, with increase in the concentration of ovaprim the latency period and hatching time decreases.
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