The Investigation Of Status Brood Stocks And Releasing Fingerlings Of Rutilus Frisii Kutum (Kaminski, 1901) In The South Of Caspian Sea(Mazandaran Province, 2004)
2007
Farabi, S.M.V., I.F.R.O. Ecological Academy of Caspian Sea, P.Sari, IRAN. | Khoshbavar Rostami, H., I.F.R.O. Ecological Academy of Caspian Sea, P.Sari, IRAN. | Ghaneei Tehrani, M., I.F.R.O. Ecological Academy of Caspian Sea, P.Sari, IRAN. | Ghiasi, M., I.F.R.O. Ecological Academy of Caspian Sea, P.Sari, IRAN. | Azari, A., I.F.R.O. Ecological Academy of Caspian Sea, P.Sari, IRAN. | Behrouzi, S., I.F.R.O. Ecological Academy of Caspian Sea, P.Sari, IRAN. | Mosavi, H., I.F.R.O. Ecological Academy of Caspian Sea, P.Sari, IRAN. | Firozkandian, S., I.F.R.O. Ecological Academy of Caspian Sea, P.Sari, IRAN. | Habibi, F., I.F.R.O. Ecological Academy of Caspian Sea, P.Sari, IRAN. | Zahedi Tabarestani, A., I.F.R.O. Ecological Academy of Caspian Sea, P.Sari, IRAN. | Mallaei, H., I.F.R.O. Ecological Academy of Caspian Sea, P.Sari, IRAN. | Mahdavi Amiri, A.., I.F.R.O. Ecological Academy of Caspian Sea, P.Sari, IRAN. | Aghlmandi, F., I.F.R.O. Ecological Academy of Caspian Sea, P.Sari, IRAN. | Binaei, M., I.F.R.O. Ecological Academy of Caspian Sea, P.Sari, IRAN.
The propagation of Rutilus frisii kutum started in 8 March 2004. This trend occurred in four rivers such as Shirod, Tonekabon, Tajan and Goharbaran. The initial temperature was 7-8'C and the end temperature was 25-26'C and this trend ended for two months. The propagation ended in 19 March 2005. During this time, 7168 and 18218 number of female and male brood stock specimens of 25386 brood stocks utilized for propagation. The mean of length, weight and condition factor of brood stock fish female and male were (43.75'1.5, 36.5'1.91) cm, (1189.5'40.36, 678.13'115.94) g and (1.42'0.11, 1.38'0.05) respectively. The total of Rutilus frisii kutum eggs during 62 days was 4931.01 kg. The highest eggs obtained (3189.31 kg and 64.7%) of Shirod River such as the highest eggs were obtained in end of March and initial April (2369. 55 kg, 48% of total eggs). The percentage of survival of eggs in four rivers was measured 94.5, 95.1, 87.7 and 96.9 respectively. The comparison between ovary weight and gonadal somatic index (GSI female), absolute fecundity, relative fecundity and hatching rate in four rivers were studied. There was only difference in hatching rate below significant rivers (Shirod River: a, Tonekabon River: b, Tajan and Goharbaran River: c) (p0.01). The total lengths and weight in larval (Newly hatch) were TL
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