STRUCTURAL INDICES OF POPULATIONS OF MAJOR COMMERICAL FISHES OF THE KREMENCHUK RESERVOIR
According to control gill net catches, major commercial fishes in middle part of the Kremenchuk reservoir are crucian carp (Carassius gibelio), silver bream (Blicca bjoerkna) and roach (Rutilus rutilus). Bream population structure in catches in 2013 was characterized by widening of its modal range t...
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| Format: | Article |
| Language: | English |
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Institute of Fisheries
2013-06-01
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| Series: | Ribogospodarsʹka Nauka Ukraïni |
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| Online Access: | http://fsu.ua/index.php/en/2013/2-2013-24/2013-02-025-031 |
| _version_ | 1811324076034097152 |
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| author | N. Rudik-Leuska |
| author_facet | N. Rudik-Leuska |
| author_sort | N. Rudik-Leuska |
| collection | DOAJ |
| description | According to control gill net catches, major commercial fishes in middle part of the Kremenchuk reservoir are crucian carp (Carassius gibelio), silver bream (Blicca bjoerkna) and roach (Rutilus rutilus). Bream population structure in catches in 2013 was characterized by widening of its modal range that is related to a decrease of middle age groups. Unstable state of the population and high enough mortality index of bream — 0,74 are first of all related to intensification of fishing effort on these age groups. Structural indices and mortality values of silver bream (0,66), roach (0,60), crucian carp (0,68) in whole correspond to those of balanced populations in conditions of moderate fishing effort. Pikeperch population in catches was represented by 5 age groups only and 71,1 % of its number was represented by age 3 fish. The absence of older age groups at high enough recruitment number also indicates on high fishing effort towards this species. |
| first_indexed | 2024-04-13T14:07:51Z |
| format | Article |
| id | doaj.art-b773bf0597574116bef8c8916feba244 |
| institution | Directory Open Access Journal |
| issn | 2075-1508 2312-9581 |
| language | English |
| last_indexed | 2024-04-13T14:07:51Z |
| publishDate | 2013-06-01 |
| publisher | Institute of Fisheries |
| record_format | Article |
| series | Ribogospodarsʹka Nauka Ukraïni |
| spelling | doaj.art-b773bf0597574116bef8c8916feba2442022-12-22T02:43:52ZengInstitute of FisheriesRibogospodarsʹka Nauka Ukraïni2075-15082312-95812013-06-012(24)253110.15407/fsu2013.02.025STRUCTURAL INDICES OF POPULATIONS OF MAJOR COMMERICAL FISHES OF THE KREMENCHUK RESERVOIRN. Rudik-Leuska0Institute of Fisheries of the NAAS, KyivAccording to control gill net catches, major commercial fishes in middle part of the Kremenchuk reservoir are crucian carp (Carassius gibelio), silver bream (Blicca bjoerkna) and roach (Rutilus rutilus). Bream population structure in catches in 2013 was characterized by widening of its modal range that is related to a decrease of middle age groups. Unstable state of the population and high enough mortality index of bream — 0,74 are first of all related to intensification of fishing effort on these age groups. Structural indices and mortality values of silver bream (0,66), roach (0,60), crucian carp (0,68) in whole correspond to those of balanced populations in conditions of moderate fishing effort. Pikeperch population in catches was represented by 5 age groups only and 71,1 % of its number was represented by age 3 fish. The absence of older age groups at high enough recruitment number also indicates on high fishing effort towards this species.http://fsu.ua/index.php/en/2013/2-2013-24/2013-02-025-031water storageindustrial fish faunapopulationcurve catchmortality of fish |
| spellingShingle | N. Rudik-Leuska STRUCTURAL INDICES OF POPULATIONS OF MAJOR COMMERICAL FISHES OF THE KREMENCHUK RESERVOIR Ribogospodarsʹka Nauka Ukraïni water storage industrial fish fauna population curve catch mortality of fish |
| title | STRUCTURAL INDICES OF POPULATIONS OF MAJOR COMMERICAL FISHES OF THE KREMENCHUK RESERVOIR |
| title_full | STRUCTURAL INDICES OF POPULATIONS OF MAJOR COMMERICAL FISHES OF THE KREMENCHUK RESERVOIR |
| title_fullStr | STRUCTURAL INDICES OF POPULATIONS OF MAJOR COMMERICAL FISHES OF THE KREMENCHUK RESERVOIR |
| title_full_unstemmed | STRUCTURAL INDICES OF POPULATIONS OF MAJOR COMMERICAL FISHES OF THE KREMENCHUK RESERVOIR |
| title_short | STRUCTURAL INDICES OF POPULATIONS OF MAJOR COMMERICAL FISHES OF THE KREMENCHUK RESERVOIR |
| title_sort | structural indices of populations of major commerical fishes of the kremenchuk reservoir |
| topic | water storage industrial fish fauna population curve catch mortality of fish |
| url | http://fsu.ua/index.php/en/2013/2-2013-24/2013-02-025-031 |
| work_keys_str_mv | AT nrudikleuska structuralindicesofpopulationsofmajorcommericalfishesofthekremenchukreservoir |