PRELIMINARY INVESTIGATION OF NATIVE AND INTRODUCED FAUNAL SPECIES IN TWO SELECTED MINOR TANKS OF UVA PROVINCE: CONSERVATIVE APPROACHES FOR LOCAL AQUATIC RESOURCES MANAGEMENT

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dc.contributor.author ABEYRATHNE, T.W.R.L.
dc.date.accessioned 2021-03-30T10:25:54Z
dc.date.available 2021-03-30T10:25:54Z
dc.date.issued 2016
dc.identifier.other UWU/AQT/12/0001
dc.identifier.uri http://www.erepo.lib.uwu.ac.lk/bitstream/handle/123456789/6329/UWULD%20AQT%2012%200001-08052019154737.pdf?sequence=1&isAllowed=y
dc.description.abstract Present study was mainly aimed to identify the aquatic fauna and assess physico-chemical parameters of water in two minor tanks in Badulla district; namely Ballawidda Wewa (Giradurukotte) and Mapakada Wewa (Mahiyanganaya). Possible impacts of introduced species on natives were considered. Two sites were selected using secondary information and divided into five sub sites considering different habitats. Study was conducted for six months; July to December in 2016. Gill net, cast net and scoop net were used to catch fauna monthly. Twenty fish species (13 native, 7 introduced) including three endemics, four mollusc species and a crustacean species were recorded. Eight fish species were molecularly identified (16s rRNA) and Indian fish species was identified as most taxonomically related species with Sri Lankan species. The order Cypriniformes in family Cyprinidae was dominant with nine fish species including native and introduced fish. Shannon-Weiner Indices of native and introduced fish diversity in Ballawidda Wewa were 1.22 and 1.03 respectively, while 1.05 and 1.11 were recorded for native and introduced fish respectively in Mapakada Wewa. Strong negative relationship was indicated between the native and introduced fish diversity indices in both tanks; Ballawidda Wewa (-0.852) and Mapakada Wewa (-0.982) (p < 0.05). It shows the possible impacts on native species by introduced, but a detailed habitat overlapping study is recommended. Environmental condition [Temperature (B: 30.7 ± 0.33 °C, M: 26.5 ± 0.31 °C), pH (B: 8.25 ±0.15, M: 8.26 ±0.12), DO (B: 10.04 ±0.31, M: 10.04 ± 0.63), BOD (B,M: 3.42 mg/1), and chlorophyll-a (B: 8.02 ± 1.27 mg/1, M: 8.81 ± 2.15 mg/1)] with respect to physicochemical parameters of water has confirmed that the habitat characteristics in those tanks are well within the range recommended for survival and growth of fish species (DO: >6 mg/1, pH: 6.0 — 8.5). Key words: minor tanks, aquatic, faunal diversity, habitats quality, 16s rRNA en_US
dc.language.iso en en_US
dc.publisher Uva Wellassa University of Sri Lanka en_US
dc.relation.ispartofseries ;UWU/AQT/12/0001
dc.subject Aquatic Resources Technology Degree Programme ( AQT) en_US
dc.title PRELIMINARY INVESTIGATION OF NATIVE AND INTRODUCED FAUNAL SPECIES IN TWO SELECTED MINOR TANKS OF UVA PROVINCE: CONSERVATIVE APPROACHES FOR LOCAL AQUATIC RESOURCES MANAGEMENT en_US
dc.title.alternative Research Article – AQT 2016 en_US
dc.type Thesis en_US


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