Survey of biological condition of fingerlings released into Gorgan-rood
GORGAN-rood is of the most rivers with 1200 KM long in the GOLESTAN province. GORGAN rood is important area, that has used for releasing sturgeon and bony fingerling fish .in this study station from releasing area to estuary were selected, for sampling and samples were collected from benthos, phytoplankton, chemical and physical parameter in 10 day interval . 10 family of benthos were identified the most number that they identified belongs to Chironomidae, Ampheritidae family and the least numbers that is identified belongs to snails and insects. 13 genus of phytoplancton identified the most numbers that they identified belongs to Nitzschia and Cyclotella. The least number that they identified related to may and guns the least number and diversities related middle of june and July Different chemical factors includes were investigated. There first of June to end July there was not any rain fall from also the water of sea advanced to GORGAN-rood. The mean of EC increased from 2/6 ms/cm injune to 21 ms/cm August. Induring releasing fish into rivermovment of fingerling were investigated, by using capture recapture in this study sturgeon fingerlings after releasing into river move into upstream and after increasing speed of water they came back to estuary.
| Main Authors: | , , , , , |
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| Format: | Report biblioteca |
| Language: | Persian |
| Published: |
Iranian Fisheries Science Research Institute
2004
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| Subjects: | Survey, Fingerlings, Benthose, Phytoplankton, Chironomidae, Nitzschia, Cyclotella, |
| Online Access: | http://hdl.handle.net/1834/14272 |
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