Some biological characteristics of roach, Rutilus rutilus caspicus, in Gomishan wetland
This study was conducted to determine some biological characteristics of migration population of roach, rutilus caspius including age, growth and reproduction in Gomishan wetland from early November 1999 to early December 2000. The sampling were carried out monthly but in the peak of spawning period...
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| Format: | Article |
| Language: | fas |
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Iranian Fisheries Research Organization
2001-01-01
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| Series: | Majallah-i ̒Ilmī-i Shīlāt-i Īrān |
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| Online Access: | http://isfj.areo.ir/article_115638_en.html |
| _version_ | 1823996773142626304 |
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| author | R. Nadafi; B. Majazi amiri; M. Karami; B. Kiabi; A. Abdoli |
| author_facet | R. Nadafi; B. Majazi amiri; M. Karami; B. Kiabi; A. Abdoli |
| author_sort | R. Nadafi; B. Majazi amiri; M. Karami; B. Kiabi; A. Abdoli |
| collection | DOAJ |
| description | This study was conducted to determine some biological characteristics of migration population of roach, rutilus caspius including age, growth and reproduction in Gomishan wetland from early November 1999 to early December 2000. The sampling were carried out monthly but in the peak of spawning period (late February to mid April) it was done weekly. The sex ratio was found M:F=1.17:1.00 without any significant difference (even at 10% level); but the results of the sex ratio for each separate age group showed significant difference (p< 0.05). A significant correlation was determined between total lengths, body weight, scale radius and age Based on back calculation, the maximum growth rate were found in ages 1+ and 2+ Gonadosmatic index (GSl) was age-dependent; with two peaks or late February and early March for males und late March and early April for females. The eggs diameter was measured with a range from 0.9 mm to 1.45 mm and the absolute fecundity was related to age...... |
| first_indexed | 2024-12-18T17:07:03Z |
| format | Article |
| id | doaj.art-cb5f25297f1e4bdcb6440de537951dff |
| institution | Directory Open Access Journal |
| issn | 1026-1354 2322-5998 |
| language | fas |
| last_indexed | 2024-12-18T17:07:03Z |
| publishDate | 2001-01-01 |
| publisher | Iranian Fisheries Research Organization |
| record_format | Article |
| series | Majallah-i ̒Ilmī-i Shīlāt-i Īrān |
| spelling | doaj.art-cb5f25297f1e4bdcb6440de537951dff2022-12-21T21:00:19ZfasIranian Fisheries Research OrganizationMajallah-i ̒Ilmī-i Shīlāt-i Īrān1026-13542322-59982001-01-01113103126Some biological characteristics of roach, Rutilus rutilus caspicus, in Gomishan wetlandR. Nadafi; B. Majazi amiri; M. Karami; B. Kiabi; A. AbdoliThis study was conducted to determine some biological characteristics of migration population of roach, rutilus caspius including age, growth and reproduction in Gomishan wetland from early November 1999 to early December 2000. The sampling were carried out monthly but in the peak of spawning period (late February to mid April) it was done weekly. The sex ratio was found M:F=1.17:1.00 without any significant difference (even at 10% level); but the results of the sex ratio for each separate age group showed significant difference (p< 0.05). A significant correlation was determined between total lengths, body weight, scale radius and age Based on back calculation, the maximum growth rate were found in ages 1+ and 2+ Gonadosmatic index (GSl) was age-dependent; with two peaks or late February and early March for males und late March and early April for females. The eggs diameter was measured with a range from 0.9 mm to 1.45 mm and the absolute fecundity was related to age......http://isfj.areo.ir/article_115638_en.htmlroach; Rutilus rutilus caspicus; biology; Gomishan wetland; Iran |
| spellingShingle | R. Nadafi; B. Majazi amiri; M. Karami; B. Kiabi; A. Abdoli Some biological characteristics of roach, Rutilus rutilus caspicus, in Gomishan wetland Majallah-i ̒Ilmī-i Shīlāt-i Īrān roach; Rutilus rutilus caspicus; biology; Gomishan wetland; Iran |
| title | Some biological characteristics of roach, Rutilus rutilus caspicus, in Gomishan wetland |
| title_full | Some biological characteristics of roach, Rutilus rutilus caspicus, in Gomishan wetland |
| title_fullStr | Some biological characteristics of roach, Rutilus rutilus caspicus, in Gomishan wetland |
| title_full_unstemmed | Some biological characteristics of roach, Rutilus rutilus caspicus, in Gomishan wetland |
| title_short | Some biological characteristics of roach, Rutilus rutilus caspicus, in Gomishan wetland |
| title_sort | some biological characteristics of roach rutilus rutilus caspicus in gomishan wetland |
| topic | roach; Rutilus rutilus caspicus; biology; Gomishan wetland; Iran |
| url | http://isfj.areo.ir/article_115638_en.html |
| work_keys_str_mv | AT rnadafibmajaziamirimkaramibkiabiaabdoli somebiologicalcharacteristicsofroachrutilusrutiluscaspicusingomishanwetland |