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Aijaz R. Mir ¹, A. Wanganeo ¹, A. R. Yousuf ², R. Wanganeo ³

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

Abstract

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.

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Aijaz R. Mir ¹, A. Wanganeo ¹, A. R. Yousuf ², R. Wanganeo ³

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

Abstract

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.

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Aijaz R. Mir ¹, A. Wanganeo ¹, A. R. Yousuf ², R. Wanganeo ³

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

Abstract

The present communication reveals the impact of Cladocera on water quality in Wular lake. The water is eutrophic as indicated by high nutrient levels. The Cladocera was dominated by Chydoridae with the main contribution of Alona sp., Alonella sp. and Chydorus sp. Shallow sites support more Cladoceran members in comparison to other sites, and all the sites contain almost same species. Population density seems to be governed by the influx of human interference and related to the nutrient enrichment and other abiotic factors including decaying organic matter, which provides food for Cladocera.

Keywords

Cladocera, Water Quality, Wular Lake, Eutrophication.

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A. Wanganeo ¹, M. A. Lone ¹

Affiliations
1 Department of Limnology, Barkatullah University, Post Box 811, Bhopal-462 026, M.P., IN

Abstract

The fry of the fish Tor tor weighing 0.347 to 0.398 g and having a length of 20 to 25 mm were collected from the Narmada river at Dhangarwada village near Hoshangabad, brought to the laboratory and acclimatized in the glass fibre tanks of 1000 litre capacity. The experiment was carried out for 270 days to evaluate the effects of different formulated feeds with different protein levels on growth and survival of fish Tor tor. In the formulated feeds fish meal was the main ingredient used along with soybean cake, ground nut oil cake, soya oil and mineral mixture.

The experiment was conducted in the glass aquaria. The fish were fed twice daily (morning and evening) at the rate of 5% of their total body weight. In control conditions, the fish was fed on commercial feed along with mosquito larvae, zooplankton and phytoplankton. About 50% of the water of each aquarium was exchanged on alternate days. Observations on fish survival, body weight and length were recorded fortnightly in each tank. Faecal material was collected and weighed after drying in a hot oven to compute the feed intake and faecal matter release. The feed and faecal samples were then analysed for proximate composition following the methods of AOAC (1980) to estimate the different nutrient contents and energy. On the basis of dry matter it was found that the moisture content of feed- I, feed-II and feed-III was 8.18%, 7.8% and 7.56% respectively and 9.14% in case of control feed. The crude protein content of feed-I, feed-II, feed-III and feed-IV was 26.25%, 32.38, 36.75 and 14.36% respectively.

Weight gain by the fry of Tor tor, fed on different diets of 35%, 45% and 50% protein levels, records an average gain in the body weight by 1.00 g, 1.165 g and 1.584 g respectively, while body length increased by 34.22 mm, 37.11 mm and 46.22 mm respectively. Significantly higher growth was observed in the diet with 50% protein than in the diets with less than 45% of protein.

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A. Wanganeo ¹, M. Mehnaz ¹, M. A. Lone ¹

Affiliations
1 Department of Limnology, Barkatullah University, Bhopal-462 026, M. P., IN

Abstract

Present study was conducted in a tropical pond on periphytic forms associated with two common freshwater fish species. Species belonging to Chlorophyceae, Bacillariophyceae, Cyanophyceae, Rotifers and Copepods were found attached to the abdominal, head and tail portion of Tilapia mossambica, while, species belonging to Bacillariophyceae and Copepods were found associated with Cyprinus carpio var. communis. However, present investigation reveals no true periphytic forms associated with the fish samples.

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