International Journal of Bio-resource and Stress Management, 2023
The study was conducted to find out the morphological variations in tilapia (Oreochrmis mossambic... more The study was conducted to find out the morphological variations in tilapia (Oreochrmis mossambicus P. 1852) samples collected from three different water bodies namely Aanasagar lake (S1), Jaisamand lake (S2) and Vallabhsagar dam (S3) during the March 2012 to April 2022 have been studied in the current research. The standard-length and weight ranged between 17.50 to 38.50 cm and 98.50–932.50 g (S1), 15.00 to 24.00 cm and 60.00 to 250.00 g (S2), 15.00 to 33.00 cm and 77.00 to 662.00 g (S3). Key scales were picked out to accomplish the objective of research. The twelve different morpho-parameters (L1, L2,…L12) of Oreochrmis mossambicus P. 1852 scales were measured and analyzed to find presence or absence of morphological variations among the tilapia populations from three habitats. It was found that between these morphometric parameters of Oreochromis mossambicus, L3 and L8 in S1 (0.862), L7 and L12 in S2 (0.830) and L10 and L12 in S3 (0.988) showed very high correlation. Further, the...
International Journal of Fauna and Biological Studies, 2020
The tiger shrimp Penaeus monodon (Fabricius, 1798) were collected from the Government shrimp farm... more The tiger shrimp Penaeus monodon (Fabricius, 1798) were collected from the Government shrimp farm, Coastal Salt salinity Research Station (CSSRS), Navsari Agricultural University, Navsari, Gujarat, India during the year 2009-2010. The morphometric measurements including length and weight of 321 male, 317 female and 638 pooled population that shows 8.0-19.4 (15.257±0.070) cm, 8.0-18.5 (15.019±0.098) cm and 9.0-19.4 (15.426±0.100) cm range of length with 8.0-52.0 (30.546±.0498), 8.0-58.0 (32.760±0.541) and 8.0-58.0 (31.663±0.369) gm range of weight respectively. The regression coefficient (r2) 0.788, 0.772 & 0.780, intercept (a) -1.451, -1.620 & -1.536 and slope or regression coefficient (b) 2.478, 2.624 & 2.552 was observed for male, female and pooled population samples. The value of regression coefficient (b) was < 3.0 that shows negative allometric growth of studied population. The values of condition factor (K) was 0.537 - 1.646 (0.875±0.009) for male, 0.455 - 1.646 (0.875±0.00...
In the present work, seasonal variations of zooplankton and selected physico-chemical parameters ... more In the present work, seasonal variations of zooplankton and selected physico-chemical parameters were studied in Jiasamand Lake, a large man-made reservoir in Udaipur (Rajasthan). In the study period, 51 species of zooplankton-17 species of Rotifera, 18 species of Cladocera, 5 species of Ostracoda and 4 species of Copepoda were observed. Among zooplankton, Rotifera was (727 No.l-1) observed as the dominant group throughout the study period and the highest count was recorded in the summer or pre-monsoon period while low incidence was observed in winter season. Zooplankton community is also correlated with certain physico-chemical parameters. The results of this study indicate that the distribution and density of zooplankton species were influenced by prevailing physical and chemical factors of the aquatic environment.
Asian Journal of Microbiology, Biotechnology and Environmental Sciences
India is the culturally diversified country where large numbers of festivals are celebrated every... more India is the culturally diversified country where large numbers of festivals are celebrated everyyear. Among these festivals, Ganesh Chaturthi is one of the important festivals and during this festivaldifferent sized Ganesh idols are worshiped for few days and later on immersed in nearby water body. Theidol immersion process is the major cause of water quality deterioration and ultimate increase the pollutionin water resources. The present study focused on evaluation of the municipal corporation campaigning andpublic awareness to conserve the Tapi river which gets polluted due to idol immersion. To fulfill the objectiveof the present study, water samples were collected during the Ganesh festivals of 2010, 2014 & 2019 andwere analyzed for important water quality parameters including temperature, pH, dissolved oxygen, totalhardness, total alkalinity, bio-chemical oxygen demand, chemical oxygen demand, oil & grease and totalcalcium. Results showed that the water quality parameters were...
A study on morphometric relationship of Indian major carps (Catla catla, Labeo rohita and Cirrhin... more A study on morphometric relationship of Indian major carps (Catla catla, Labeo rohita and Cirrhinus mrigala) was conducted on the fish specimens collected form commercial landing center of Lake Jaisamand. The morphometric measurements (Total length, Standard length, Forked length, Head length, Snout length, Eye diameter, Pre-dorsal length, Pre-pectoral length, Pre-pelvic length, Pre-anal length, Height of dorsal fin, Anal fin length, Body depth, Caudal depth and Caudal length) and body weight were recorded. The descriptive statistical parameters and correlation coefficient (r) were analysis with independent variable (total length) and dependent variable (other morphometric parameters). The result shows that morphometric parameters are highly correlated to total length except Snout length to total length. The regression coefficient (b) was less than 3.0 with total length and other morphometric that indicate the negative allometric growth of these parameters compared to total length w...
C of coliform growth have been reported in drinking water distribution systems. Iron and magnesiu... more C of coliform growth have been reported in drinking water distribution systems. Iron and magnesium as important inorganic nutrients are known to affect bacterial growth and survival under oligotrophic conditions. Corrosion of pipes can lead to elevated levels of iron in the system while magnesium is present in fairly high concentrations in ground waters. E. coli were grown in 1:100 nutrient broth solution and examined for the effect of varying iron and magnesium concentrations on bacterial growth and response to chlorine disinfection in the oligotrophic environments of drinking water distribution systems. Growth rates of E. coli increased with increase in concentration of inorganic nutrients such as Fe3+ and Mg2+. However, no growth of E. coli was observed in the presence of Fe3+ at a concentration of 0.05 mM. Growth and inactivation rates were negatively correlated for both inorganic nutrients tested, i.e., Fe3+ and Mg2+ implying that bacteria grown in the presence of inorganic nut...
In present paper, growth performance of Indian major carp (Catla catla, Ham. 1822) was studied us... more In present paper, growth performance of Indian major carp (Catla catla, Ham. 1822) was studied using key scales in three different sized water bodies namely Mahi Bajaj Sagar (MBS), Survania Dam (SD) and Aasan Pond (AP) situated in the tribal dominated Banswara district of Rajasthan. The annual rings or annuli (+6 to +7) and growth data in samples were observed and used to estimate selected growth parameters. High value of correlation coefficient 'r' 0.946 (MBS), 0.912 (SD) and 0.911 (AP) evident and speak for strong correlation in total length of fish and scale radius. The growth parameters such as Index of species average size (Øh) 12.515, 11.557 and 11.000, Index of weight growth (ØC w) 96.610, 103.126 and 87.554 for MBS, SD and AP respectively were computed. Growth performance estimation in this study on the basis of key scales exhibited that growth of carps in the water bodies of southern Rajasthan could be divided into two phases: the first, phase of sexual immaturity, ...
The Indian major carp, Labeo rohtia (Ham. 1822) is the popular and commercially important freshwa... more The Indian major carp, Labeo rohtia (Ham. 1822) is the popular and commercially important freshwater fish. The objective of present study, elucidate the growth performance of fish and different growth parameters based on the scale analysis of rohu in Vallabhsagar reservoir. For this study about 662 fish scale samples were randomly collected from May 2013 to June 2014 and analysed which shows that these fishes containing 40.67-85.05 cm and 770-5591 gm back calculated length and weight respectively were directly proportionate to the age. The computation of growth parameter, annual length increment (H), annual weight increment (w), specific rate of linear growth-length (Cl), growth characteristic (Cth), Growth constant (Clt) and specific rate of increase in weight (Cw) resulted inversely proportionate to the age of studied fish.The findings of the growth constant average (Clt(av)) shows three life stages of fish in that one growth phase was before sexual maturity (0.25) and two growth ...
The length-weight relationship and condition factor of whiteleg shrimp Litopenaeus vannamei were ... more The length-weight relationship and condition factor of whiteleg shrimp Litopenaeus vannamei were described in present paper. For proposed research work the length and weight of the shrimp was measured from earthen pond of Moriraj Aqua Firm, Rohini, Khambhat taluka of Gujarat state during October 2020. The result shows that mean length, weight and condition factor were signify 11.644±0.040 cm, 18.355±0.249 gm, 1.165±0.009 for length group A, 13.466±0.025 cm, 30.510±0.233 gm, 1.246±0.006 for length group B and 14.480±0.035 cm, 38.550±0.246 gm, 1.268±0.005 for length group C while it was 13.741±0.051 cm, 32.829±0.388 gm and 1.249±0.004 for pooled population. The squire value correlation coefficient (r) depicted a strong linier relationship between the variables, it was ranged 0.674 and 0.828 for different length groups and 0.941 for pooled data. The regression coefficient or growth constant (b) was noted 3.536, 3.462, 3.239 and 3.322 for respective length groups and pooled population which is > 3.0 that indicating positive allometry growth of studied shrimp in earthen ponds.
Journal of Fisheries and Life Sciences, Jun 1, 2018
The information on the feeding habits of fish helps to know about the inter-specific relationship... more The information on the feeding habits of fish helps to know about the inter-specific relationship of aquatic fauna and the productivity of the water body. In the present study, the feeding habit and preferred food contents of Cirrhinus mrigala from Ukai reservoir of Gujarat was discussed with reference to index of preponderance. The quantitative composition of food components was analysed during June, 2013 to May, 2014 and found that the gut was consisted by decay matter, phytoplankton, plant material, zooplankton and insects. The results showed that decay matter and plankton dominated in gut contents and considered as main food component during breeding, post breeding, pre-breeding seasons and pooled data. Hence, it can be concluded that C. mrigala was omnivorous in feeding habit and findings were also verified by the index of preponderance.
Environmental conditions of aquatic resources and their suitability play a major role in growth o... more Environmental conditions of aquatic resources and their suitability play a major role in growth of fishes including non-native species also. Tilapia, (Oreochromis mossambicus) is not a native fish but well adapted to the prevailing local ecological and edaphic conditions of lake Jaisamand, India. The results show that 4 length groups and 4 age classes were observed in the catch which were dominated by large size by length 30-37 cm (67%) and by age 3+ (60%). The dominance of large sized tilapia in the catch is indication of favorability or congeniality of aquatic environment for tilapias in Jaisamand Lake. The growth of fish was inversely related to the age and observed 11.69 cm at 1+ age, 8.67 cm at 2+ age, 7.89 cm at 3+ age and 6.15 cm at 4+ age of fish. It is observed that growth rate of tilapia was better and satisfactory in Jaisamand Lake which is reasoned for efficient use of available food resources by these fishes. The catch composition of tilapia further shows that contribut...
International Journal of Fauna and Biological Studies, 2021
The length-weight relationship and condition factor of whiteleg shrimp Litopenaeus vannamei were ... more The length-weight relationship and condition factor of whiteleg shrimp Litopenaeus vannamei were described in present paper. For proposed research work the length and weight of the shrimp was measured from earthen pond of Moriraj Aqua Firm, Rohini, Khambhat taluka of Gujarat state during October 2020. The result shows that mean length, weight and condition factor were signify 11.644±0.040 cm, 18.355±0.249 gm, 1.165±0.009 for length group A, 13.466±0.025 cm, 30.510±0.233 gm, 1.246±0.006 for length group B and 14.480±0.035 cm, 38.550±0.246 gm, 1.268±0.005 for length group C while it was 13.741±0.051 cm, 32.829±0.388 gm and 1.249±0.004 for pooled population. The squire value correlation coefficient (r) depicted a strong linier relationship between the variables, it was ranged 0.674 and 0.828 for different length groups and 0.941 for pooled data. The regression coefficient or growth constant (b) was noted 3.536, 3.462, 3.239 and 3.322 for respective length groups and pooled population which is > 3.0 that indicating positive allometry growth of studied shrimp in earthen ponds.
The present study was deals with water quality index (WQI) of Sarangpani Lake from July to Decemb... more The present study was deals with water quality index (WQI) of Sarangpani Lake from July to December 2007 in Bhopal (MP). In the present study it was observed that water quality index of lake water excellent (48.08) for fish culture. The assessment of correlation coefficient (r) between all parameters of sampling stations (S 1 and S 2). A systematic correlation coefficient (r) is perfect / high significance (0.8 &lt; r &lt; 1.0) level with positive relationship between all parameters. Water quality index based on physic-chemical parameters indicate that water quality of lake is suitable for fish culture and drinking purpose.
The water pollution status of aquatic resource can be assessed by water quality parameters and wa... more The water pollution status of aquatic resource can be assessed by water quality parameters and water pollution index. The water quality parameters (WQP) provide the primary information on the pollution status whereas water pollution index (WPI) is single useful number which expresses the water quality by integrating quality parameters of water. The objective of the present paper is to determine WQP, WPI and assessment of pollution status in estuarine environment of Tapi River, Gujarat during the months of January 2011 to June 2011. The results of the present study revealed that temperature, pH, DO, BOD, nitrite-N, phosphate, ammonia and fluoride were within the permissible limits while turbidity, COD, nitrate-N, conductivity and chlorides exceeded the permissible limits prescribed in coastal water standards and CPCB standards. The Water Pollution Index value (4.035) indicates that the estuarine environment of Tapi River comes under category IV to V which is considered as ‘polluted’ and ‘impure aquatic resource’. The findings of present study can be concluded that estuarine environment of Tapi River is polluted and needs to be restored through appropriate management programs.
The present study describes the diversity of phytoplankton in the lake Jaisamand of Rajasthan (In... more The present study describes the diversity of phytoplankton in the lake Jaisamand of Rajasthan (India). Results depict that phytoplankton was contributed by six major groups which comprised total 85 species. Out of which 13 belongs to Myxophyceae, 5 to Euglenophyceae, 38 to Chlorophyceae, 3 to Xanthophyceae, 1 to Cryptophyceae and 23 to Bacillariophyceae. Thus, Bacillariophyceae and Chlorophyceae turned up as the dominant groups in terms of density (159-554 numbers per liter and 24-485 numbers per liter) and species number (23 and 38), respectively. It was revealed that Jaisamand Lake maintained fairly good population of phytoplankton which is indication of providing broad base for achieving high productivity in this water body.
International Journal of Bio-resource and Stress Management, 2023
The study was conducted to find out the morphological variations in tilapia (Oreochrmis mossambic... more The study was conducted to find out the morphological variations in tilapia (Oreochrmis mossambicus P. 1852) samples collected from three different water bodies namely Aanasagar lake (S1), Jaisamand lake (S2) and Vallabhsagar dam (S3) during the March 2012 to April 2022 have been studied in the current research. The standard-length and weight ranged between 17.50 to 38.50 cm and 98.50–932.50 g (S1), 15.00 to 24.00 cm and 60.00 to 250.00 g (S2), 15.00 to 33.00 cm and 77.00 to 662.00 g (S3). Key scales were picked out to accomplish the objective of research. The twelve different morpho-parameters (L1, L2,…L12) of Oreochrmis mossambicus P. 1852 scales were measured and analyzed to find presence or absence of morphological variations among the tilapia populations from three habitats. It was found that between these morphometric parameters of Oreochromis mossambicus, L3 and L8 in S1 (0.862), L7 and L12 in S2 (0.830) and L10 and L12 in S3 (0.988) showed very high correlation. Further, the...
International Journal of Fauna and Biological Studies, 2020
The tiger shrimp Penaeus monodon (Fabricius, 1798) were collected from the Government shrimp farm... more The tiger shrimp Penaeus monodon (Fabricius, 1798) were collected from the Government shrimp farm, Coastal Salt salinity Research Station (CSSRS), Navsari Agricultural University, Navsari, Gujarat, India during the year 2009-2010. The morphometric measurements including length and weight of 321 male, 317 female and 638 pooled population that shows 8.0-19.4 (15.257±0.070) cm, 8.0-18.5 (15.019±0.098) cm and 9.0-19.4 (15.426±0.100) cm range of length with 8.0-52.0 (30.546±.0498), 8.0-58.0 (32.760±0.541) and 8.0-58.0 (31.663±0.369) gm range of weight respectively. The regression coefficient (r2) 0.788, 0.772 & 0.780, intercept (a) -1.451, -1.620 & -1.536 and slope or regression coefficient (b) 2.478, 2.624 & 2.552 was observed for male, female and pooled population samples. The value of regression coefficient (b) was < 3.0 that shows negative allometric growth of studied population. The values of condition factor (K) was 0.537 - 1.646 (0.875±0.009) for male, 0.455 - 1.646 (0.875±0.00...
In the present work, seasonal variations of zooplankton and selected physico-chemical parameters ... more In the present work, seasonal variations of zooplankton and selected physico-chemical parameters were studied in Jiasamand Lake, a large man-made reservoir in Udaipur (Rajasthan). In the study period, 51 species of zooplankton-17 species of Rotifera, 18 species of Cladocera, 5 species of Ostracoda and 4 species of Copepoda were observed. Among zooplankton, Rotifera was (727 No.l-1) observed as the dominant group throughout the study period and the highest count was recorded in the summer or pre-monsoon period while low incidence was observed in winter season. Zooplankton community is also correlated with certain physico-chemical parameters. The results of this study indicate that the distribution and density of zooplankton species were influenced by prevailing physical and chemical factors of the aquatic environment.
Asian Journal of Microbiology, Biotechnology and Environmental Sciences
India is the culturally diversified country where large numbers of festivals are celebrated every... more India is the culturally diversified country where large numbers of festivals are celebrated everyyear. Among these festivals, Ganesh Chaturthi is one of the important festivals and during this festivaldifferent sized Ganesh idols are worshiped for few days and later on immersed in nearby water body. Theidol immersion process is the major cause of water quality deterioration and ultimate increase the pollutionin water resources. The present study focused on evaluation of the municipal corporation campaigning andpublic awareness to conserve the Tapi river which gets polluted due to idol immersion. To fulfill the objectiveof the present study, water samples were collected during the Ganesh festivals of 2010, 2014 & 2019 andwere analyzed for important water quality parameters including temperature, pH, dissolved oxygen, totalhardness, total alkalinity, bio-chemical oxygen demand, chemical oxygen demand, oil & grease and totalcalcium. Results showed that the water quality parameters were...
A study on morphometric relationship of Indian major carps (Catla catla, Labeo rohita and Cirrhin... more A study on morphometric relationship of Indian major carps (Catla catla, Labeo rohita and Cirrhinus mrigala) was conducted on the fish specimens collected form commercial landing center of Lake Jaisamand. The morphometric measurements (Total length, Standard length, Forked length, Head length, Snout length, Eye diameter, Pre-dorsal length, Pre-pectoral length, Pre-pelvic length, Pre-anal length, Height of dorsal fin, Anal fin length, Body depth, Caudal depth and Caudal length) and body weight were recorded. The descriptive statistical parameters and correlation coefficient (r) were analysis with independent variable (total length) and dependent variable (other morphometric parameters). The result shows that morphometric parameters are highly correlated to total length except Snout length to total length. The regression coefficient (b) was less than 3.0 with total length and other morphometric that indicate the negative allometric growth of these parameters compared to total length w...
C of coliform growth have been reported in drinking water distribution systems. Iron and magnesiu... more C of coliform growth have been reported in drinking water distribution systems. Iron and magnesium as important inorganic nutrients are known to affect bacterial growth and survival under oligotrophic conditions. Corrosion of pipes can lead to elevated levels of iron in the system while magnesium is present in fairly high concentrations in ground waters. E. coli were grown in 1:100 nutrient broth solution and examined for the effect of varying iron and magnesium concentrations on bacterial growth and response to chlorine disinfection in the oligotrophic environments of drinking water distribution systems. Growth rates of E. coli increased with increase in concentration of inorganic nutrients such as Fe3+ and Mg2+. However, no growth of E. coli was observed in the presence of Fe3+ at a concentration of 0.05 mM. Growth and inactivation rates were negatively correlated for both inorganic nutrients tested, i.e., Fe3+ and Mg2+ implying that bacteria grown in the presence of inorganic nut...
In present paper, growth performance of Indian major carp (Catla catla, Ham. 1822) was studied us... more In present paper, growth performance of Indian major carp (Catla catla, Ham. 1822) was studied using key scales in three different sized water bodies namely Mahi Bajaj Sagar (MBS), Survania Dam (SD) and Aasan Pond (AP) situated in the tribal dominated Banswara district of Rajasthan. The annual rings or annuli (+6 to +7) and growth data in samples were observed and used to estimate selected growth parameters. High value of correlation coefficient 'r' 0.946 (MBS), 0.912 (SD) and 0.911 (AP) evident and speak for strong correlation in total length of fish and scale radius. The growth parameters such as Index of species average size (Øh) 12.515, 11.557 and 11.000, Index of weight growth (ØC w) 96.610, 103.126 and 87.554 for MBS, SD and AP respectively were computed. Growth performance estimation in this study on the basis of key scales exhibited that growth of carps in the water bodies of southern Rajasthan could be divided into two phases: the first, phase of sexual immaturity, ...
The Indian major carp, Labeo rohtia (Ham. 1822) is the popular and commercially important freshwa... more The Indian major carp, Labeo rohtia (Ham. 1822) is the popular and commercially important freshwater fish. The objective of present study, elucidate the growth performance of fish and different growth parameters based on the scale analysis of rohu in Vallabhsagar reservoir. For this study about 662 fish scale samples were randomly collected from May 2013 to June 2014 and analysed which shows that these fishes containing 40.67-85.05 cm and 770-5591 gm back calculated length and weight respectively were directly proportionate to the age. The computation of growth parameter, annual length increment (H), annual weight increment (w), specific rate of linear growth-length (Cl), growth characteristic (Cth), Growth constant (Clt) and specific rate of increase in weight (Cw) resulted inversely proportionate to the age of studied fish.The findings of the growth constant average (Clt(av)) shows three life stages of fish in that one growth phase was before sexual maturity (0.25) and two growth ...
The length-weight relationship and condition factor of whiteleg shrimp Litopenaeus vannamei were ... more The length-weight relationship and condition factor of whiteleg shrimp Litopenaeus vannamei were described in present paper. For proposed research work the length and weight of the shrimp was measured from earthen pond of Moriraj Aqua Firm, Rohini, Khambhat taluka of Gujarat state during October 2020. The result shows that mean length, weight and condition factor were signify 11.644±0.040 cm, 18.355±0.249 gm, 1.165±0.009 for length group A, 13.466±0.025 cm, 30.510±0.233 gm, 1.246±0.006 for length group B and 14.480±0.035 cm, 38.550±0.246 gm, 1.268±0.005 for length group C while it was 13.741±0.051 cm, 32.829±0.388 gm and 1.249±0.004 for pooled population. The squire value correlation coefficient (r) depicted a strong linier relationship between the variables, it was ranged 0.674 and 0.828 for different length groups and 0.941 for pooled data. The regression coefficient or growth constant (b) was noted 3.536, 3.462, 3.239 and 3.322 for respective length groups and pooled population which is > 3.0 that indicating positive allometry growth of studied shrimp in earthen ponds.
Journal of Fisheries and Life Sciences, Jun 1, 2018
The information on the feeding habits of fish helps to know about the inter-specific relationship... more The information on the feeding habits of fish helps to know about the inter-specific relationship of aquatic fauna and the productivity of the water body. In the present study, the feeding habit and preferred food contents of Cirrhinus mrigala from Ukai reservoir of Gujarat was discussed with reference to index of preponderance. The quantitative composition of food components was analysed during June, 2013 to May, 2014 and found that the gut was consisted by decay matter, phytoplankton, plant material, zooplankton and insects. The results showed that decay matter and plankton dominated in gut contents and considered as main food component during breeding, post breeding, pre-breeding seasons and pooled data. Hence, it can be concluded that C. mrigala was omnivorous in feeding habit and findings were also verified by the index of preponderance.
Environmental conditions of aquatic resources and their suitability play a major role in growth o... more Environmental conditions of aquatic resources and their suitability play a major role in growth of fishes including non-native species also. Tilapia, (Oreochromis mossambicus) is not a native fish but well adapted to the prevailing local ecological and edaphic conditions of lake Jaisamand, India. The results show that 4 length groups and 4 age classes were observed in the catch which were dominated by large size by length 30-37 cm (67%) and by age 3+ (60%). The dominance of large sized tilapia in the catch is indication of favorability or congeniality of aquatic environment for tilapias in Jaisamand Lake. The growth of fish was inversely related to the age and observed 11.69 cm at 1+ age, 8.67 cm at 2+ age, 7.89 cm at 3+ age and 6.15 cm at 4+ age of fish. It is observed that growth rate of tilapia was better and satisfactory in Jaisamand Lake which is reasoned for efficient use of available food resources by these fishes. The catch composition of tilapia further shows that contribut...
International Journal of Fauna and Biological Studies, 2021
The length-weight relationship and condition factor of whiteleg shrimp Litopenaeus vannamei were ... more The length-weight relationship and condition factor of whiteleg shrimp Litopenaeus vannamei were described in present paper. For proposed research work the length and weight of the shrimp was measured from earthen pond of Moriraj Aqua Firm, Rohini, Khambhat taluka of Gujarat state during October 2020. The result shows that mean length, weight and condition factor were signify 11.644±0.040 cm, 18.355±0.249 gm, 1.165±0.009 for length group A, 13.466±0.025 cm, 30.510±0.233 gm, 1.246±0.006 for length group B and 14.480±0.035 cm, 38.550±0.246 gm, 1.268±0.005 for length group C while it was 13.741±0.051 cm, 32.829±0.388 gm and 1.249±0.004 for pooled population. The squire value correlation coefficient (r) depicted a strong linier relationship between the variables, it was ranged 0.674 and 0.828 for different length groups and 0.941 for pooled data. The regression coefficient or growth constant (b) was noted 3.536, 3.462, 3.239 and 3.322 for respective length groups and pooled population which is > 3.0 that indicating positive allometry growth of studied shrimp in earthen ponds.
The present study was deals with water quality index (WQI) of Sarangpani Lake from July to Decemb... more The present study was deals with water quality index (WQI) of Sarangpani Lake from July to December 2007 in Bhopal (MP). In the present study it was observed that water quality index of lake water excellent (48.08) for fish culture. The assessment of correlation coefficient (r) between all parameters of sampling stations (S 1 and S 2). A systematic correlation coefficient (r) is perfect / high significance (0.8 &lt; r &lt; 1.0) level with positive relationship between all parameters. Water quality index based on physic-chemical parameters indicate that water quality of lake is suitable for fish culture and drinking purpose.
The water pollution status of aquatic resource can be assessed by water quality parameters and wa... more The water pollution status of aquatic resource can be assessed by water quality parameters and water pollution index. The water quality parameters (WQP) provide the primary information on the pollution status whereas water pollution index (WPI) is single useful number which expresses the water quality by integrating quality parameters of water. The objective of the present paper is to determine WQP, WPI and assessment of pollution status in estuarine environment of Tapi River, Gujarat during the months of January 2011 to June 2011. The results of the present study revealed that temperature, pH, DO, BOD, nitrite-N, phosphate, ammonia and fluoride were within the permissible limits while turbidity, COD, nitrate-N, conductivity and chlorides exceeded the permissible limits prescribed in coastal water standards and CPCB standards. The Water Pollution Index value (4.035) indicates that the estuarine environment of Tapi River comes under category IV to V which is considered as ‘polluted’ and ‘impure aquatic resource’. The findings of present study can be concluded that estuarine environment of Tapi River is polluted and needs to be restored through appropriate management programs.
The present study describes the diversity of phytoplankton in the lake Jaisamand of Rajasthan (In... more The present study describes the diversity of phytoplankton in the lake Jaisamand of Rajasthan (India). Results depict that phytoplankton was contributed by six major groups which comprised total 85 species. Out of which 13 belongs to Myxophyceae, 5 to Euglenophyceae, 38 to Chlorophyceae, 3 to Xanthophyceae, 1 to Cryptophyceae and 23 to Bacillariophyceae. Thus, Bacillariophyceae and Chlorophyceae turned up as the dominant groups in terms of density (159-554 numbers per liter and 24-485 numbers per liter) and species number (23 and 38), respectively. It was revealed that Jaisamand Lake maintained fairly good population of phytoplankton which is indication of providing broad base for achieving high productivity in this water body.
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