Studying quality and quantity of fingerling of some bony fish
Monitoring and studing ,qualityand quntity fingerling some of species such in this as (Rutilus rutilus , Cyprinus carpio ,Rutilus frisii kutum ) were accomplished in 2000-2001. in this poroject some of chemical and physical factors in ponds, and growth of fingerlings were studied ,from introducing stage to ponds , till releasing into GOLESTAN province rivers. Some chemical and physical parametres were measured such as O2,NO2,PO4 In 10 days interval. The growth of fingers were studied by measuring percision1mm and 0.1mg . length of frequency was determined in different class interval untill 3 gr . condition factor was calculated for all species. Number of fingerlings released into river estimated by sampling ( 3 times in each hauling ) .number of KUTUM andKORA fingerlings that they have released in 2001 , %14-%19 had increased in comparison with 2000. While mean weight of fingerlings in 2000 was higher than in 2001 . but about common carp in 2001, either mean weight or number was better than in 2000 . in during time of releasing with decreasing of level of water in ponds , temprature of environment increased and that caused water quality fell down so fast . present of different aquatic plants , undessired fingerlings fish and larve of frog are some difficults in ponds.
| Main Authors: | , , , , |
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| Format: | Report biblioteca |
| Language: | Persian |
| Published: |
Iranian Fisheries Science Research Institute
2005
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| Subjects: | Introducing, Releasing, Frequency, Rutilus rutilus, Cyprinus carpio, Rutilus frisii kutum, Species, Pond, Fish, |
| Online Access: | http://hdl.handle.net/1834/14415 |
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| Summary: | Monitoring and studing ,qualityand quntity fingerling some of species such in this as (Rutilus rutilus , Cyprinus carpio ,Rutilus frisii kutum ) were accomplished in 2000-2001. in this poroject some of chemical and
physical factors in ponds, and growth of fingerlings were studied ,from introducing stage to ponds , till releasing
into GOLESTAN province rivers. Some chemical and physical parametres were measured such as
O2,NO2,PO4 In 10 days interval. The growth of fingers were studied by measuring percision1mm and 0.1mg . length of frequency was determined in different class interval untill 3 gr . condition factor was calculated for all
species. Number of fingerlings released into river estimated by sampling ( 3 times in each hauling ) .number of
KUTUM andKORA fingerlings that they have released in 2001 , %14-%19 had increased in comparison with
2000. While mean weight of fingerlings in 2000 was higher than in 2001 . but about common carp in 2001, either mean weight or number was better than in 2000 . in during time of releasing with decreasing of level of
water in ponds , temprature of environment increased and that caused water quality fell down so fast . present of
different aquatic plants , undessired fingerlings fish and larve of frog are some difficults in ponds. |
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