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Yousuf, A. R.
- Biology of Cyprinus carpio communis from Dal Lake, Kashmir with Reference to Food and Feeding Habits, Length-Weight Relationship, and Fecundity
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Authors
Affiliations
1 Centre of Research for Development (CORD), University of Kashmir, Srinagar-190 006, J&K, IN
2 Division of Fishery Biology, SKUAST-K, Srinagar-190 006, J&K, IN
3 Department of Zoology, University of Kashmir, Srinagar-190 006, J&K, IN
1 Centre of Research for Development (CORD), University of Kashmir, Srinagar-190 006, J&K, IN
2 Division of Fishery Biology, SKUAST-K, Srinagar-190 006, J&K, IN
3 Department of Zoology, University of Kashmir, Srinagar-190 006, J&K, IN
Source
Nature Environment and Pollution Technology, Vol 11, No 1 (2012), Pagination: 79-87Abstract
A total of 143 specimens of Cyprinus carpio communis were collected from Dal Lake, ranging in length from 144mm to 414mm, and in weight from 40g to 4450g. The length-weight relationship of the two sexes exhibited significant differences in growth co-efficient (b) and showed deviations from cube law (Male 'n' = 3.15 and Female 'n' = 2.80). Gut contents of the fish revealed that on an average, decayed organic matter (detritus) formed 45% of total food, while the remaining food consisted of both plant and animal matter. Arthropods and macrophytes formed the main or basic food, whereas, oligochaetes, protozoa, rotifers and algae constituted its secondary food. The molluscan and fish remains formed the incidental food. On the basis of gut content analysis, the fish was designated as detri-omnivore. Gastrosomatic index (Ga.S.I.) recorded highest value in July, while lower values were recorded in February. Condition factor (Kn) recorded highest value during March in both the sexes. Condition factor as well as gastrosomatic index exhibited a decreasing trend from higher length groups to smaller ones. Absolute fecundity of the fish varied from 3173 to 629230 and the relative fecundity fluctuated in the range of 21-230 with a mean value of 91.17. The largest length group exhibited higher fecundity than smaller ones, and its Go.S.I indicated the fish to be spring breeder.Keywords
Cyprinus carpio communis, Food and Feeding Habits, Length-Weight Relationship, Fecundity, Gastrosomatic Index, Gonadosomatic Index.- Diversity Index of Algal Flora in Wular Lake, Kashmir
Abstract Views :149 |
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Authors
Affiliations
1 Department of Limnology, Barkatullah University, Bhopal-462 026, M.P., IN
2 CORD, University of Kashmir, Srinagar-190 006, Kashmir, IN
3 Department of Zoology, S. V. College, Bairagarh, Bhopal-462 026, M.P., IN
1 Department of Limnology, Barkatullah University, Bhopal-462 026, M.P., IN
2 CORD, University of Kashmir, Srinagar-190 006, Kashmir, IN
3 Department of Zoology, S. V. College, Bairagarh, Bhopal-462 026, M.P., IN
Source
Nature Environment and Pollution Technology, Vol 9, No 2 (2010), Pagination: 293-298Abstract
Shannon's diversity index of algal flora was calculated to analyse the algal community inWular lake, Kashmir duringMarch 2002-February 2004. All the selected five stations did not show any difference in the mean values of diversity index, but the values of each month showed slight variation. Diversity was correlated with physicochemical parameters. It showed positive correlation with Transparency and negative correlation with conductivity, carbon dioxide, hardness and nitrate. The ANOVA was highly significant with respect to site and season. Shannon's index may hold good index for determining the degree of pollution.Keywords
Diversity Index, Algal Flora, Wular Lake.- Zooplankton Community in a through Flow System of Kashmir Himalayan Wetland
Abstract Views :154 |
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Authors
Affiliations
1 Department of Limnology, Barkatullah University, Bhopal-462 026, M.P, IN
2 Centre of Research for Development, University of Kashmir, Srinagar-190006, Kashmir, IN
3 Department of Zoology, S.V. College, Bairagrah, Bhopal, M. P., IN
1 Department of Limnology, Barkatullah University, Bhopal-462 026, M.P, IN
2 Centre of Research for Development, University of Kashmir, Srinagar-190006, Kashmir, IN
3 Department of Zoology, S.V. College, Bairagrah, Bhopal, M. P., IN
Source
Nature Environment and Pollution Technology, Vol 7, No 4 (2008), Pagination: 627-634Abstract
Study on zooplankton community in through flow 'Wular' wetland revealed that Rotifera were dominant in diversity while Cladocerans in density. Among Rotifera Keratella sp., Monostyla sp. and Polyarthra vulgaris were perennial, and remaining seasonal. Among Cladocerans Alona rectangula, Alona intermediata, Alonella exisa, Alonella nana, Chydorus sphaericus, Chydorus faviformis, Graptolebris testudanaria, Macrothrix spinosa, Macrothrix laticornis and Moina sp. were perennial, and remaining seasonal. The reason for their seasonal variation has been correlated with different physicochemical parameters.Keywords
Zooplankton Community, Wular Wetland, Eutrophication, Physicochemical Status, Biodiversity, Species Diversity.- Cladoceran Community in Relation to Eutrophication of Wular Lake, Kashmir
Abstract Views :114 |
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Authors
Affiliations
1 Department of Limnology, Barkatullah University, Bhopal-462 026, M.P., IN
2 Centre of Research for Development, University of Kashmir, Srinagar-190 006, Kashmir, IN
3 Department of Zoology, Sadhu Vasavi College, Bairagarh, Bhopal, M.P., IN
1 Department of Limnology, Barkatullah University, Bhopal-462 026, M.P., IN
2 Centre of Research for Development, University of Kashmir, Srinagar-190 006, Kashmir, IN
3 Department of Zoology, Sadhu Vasavi College, Bairagarh, Bhopal, M.P., IN