Sex-age structure and reproduction of yellowfin sole <i>Limanda aspera </i>in the eastern part of the Okhotsk Sea
Data on sex ratio and size-age composition of yellowfin sole Limanda aspera Pallas [1814] in the eastern Okhotsk Sea are generalized. The sex structure is significantly different for mature and immature parts of this stock. Natural losses of both males and females depend on their year-class strength...
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Transactions of the Pacific Research Institute of Fisheries and Oceanography
2014-09-01
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| Series: | Известия ТИНРО |
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| Online Access: | https://izvestiya.tinro-center.ru/jour/article/view/200 |
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| author | Yury P. Diakov |
| author_facet | Yury P. Diakov |
| author_sort | Yury P. Diakov |
| collection | DOAJ |
| description | Data on sex ratio and size-age composition of yellowfin sole Limanda aspera Pallas [1814] in the eastern Okhotsk Sea are generalized. The sex structure is significantly different for mature and immature parts of this stock. Natural losses of both males and females depend on their year-class strength: the stronger the generation, the higher mortality. Besides, their maturing depends on the year-class strength, too: both males and females of high-abundant generations mature later, and rate of their gonads maturation decreases for elder age groups. Favorable environmental conditions supposedly promote growth of spawning stock with increasing of the females portion. So, for weak or mediate year-classes the leading increase of females provides an abundant recruitment at the beginning, but further the growing misbalance of sex ratio can effect on the reproduction negatively. However, dynamics of progeny correlates stronger with spawning stock than with sex ratio. |
| format | Article |
| id | doaj-art-bab1fbe113a245d69dfca09c6c27abb4 |
| institution | DOAJ |
| issn | 1606-9919 2658-5510 |
| language | Russian |
| publishDate | 2014-09-01 |
| publisher | Transactions of the Pacific Research Institute of Fisheries and Oceanography |
| record_format | Article |
| series | Известия ТИНРО |
| spelling | doaj-art-bab1fbe113a245d69dfca09c6c27abb42025-08-20T03:19:02ZrusTransactions of the Pacific Research Institute of Fisheries and OceanographyИзвестия ТИНРО1606-99192658-55102014-09-011783688610.26428/1606-9919-2014-178-68-86200Sex-age structure and reproduction of yellowfin sole <i>Limanda aspera </i>in the eastern part of the Okhotsk SeaYury P. Diakov0Камчатский научно-исследовательский институт рыбного хозяйства и океанографииData on sex ratio and size-age composition of yellowfin sole Limanda aspera Pallas [1814] in the eastern Okhotsk Sea are generalized. The sex structure is significantly different for mature and immature parts of this stock. Natural losses of both males and females depend on their year-class strength: the stronger the generation, the higher mortality. Besides, their maturing depends on the year-class strength, too: both males and females of high-abundant generations mature later, and rate of their gonads maturation decreases for elder age groups. Favorable environmental conditions supposedly promote growth of spawning stock with increasing of the females portion. So, for weak or mediate year-classes the leading increase of females provides an abundant recruitment at the beginning, but further the growing misbalance of sex ratio can effect on the reproduction negatively. However, dynamics of progeny correlates stronger with spawning stock than with sex ratio.https://izvestiya.tinro-center.ru/jour/article/view/200yellowfin soleyear-class strengthmaturationspawning stockprogeny |
| spellingShingle | Yury P. Diakov Sex-age structure and reproduction of yellowfin sole <i>Limanda aspera </i>in the eastern part of the Okhotsk Sea Известия ТИНРО yellowfin sole year-class strength maturation spawning stock progeny |
| title | Sex-age structure and reproduction of yellowfin sole <i>Limanda aspera </i>in the eastern part of the Okhotsk Sea |
| title_full | Sex-age structure and reproduction of yellowfin sole <i>Limanda aspera </i>in the eastern part of the Okhotsk Sea |
| title_fullStr | Sex-age structure and reproduction of yellowfin sole <i>Limanda aspera </i>in the eastern part of the Okhotsk Sea |
| title_full_unstemmed | Sex-age structure and reproduction of yellowfin sole <i>Limanda aspera </i>in the eastern part of the Okhotsk Sea |
| title_short | Sex-age structure and reproduction of yellowfin sole <i>Limanda aspera </i>in the eastern part of the Okhotsk Sea |
| title_sort | sex age structure and reproduction of yellowfin sole i limanda aspera i in the eastern part of the okhotsk sea |
| topic | yellowfin sole year-class strength maturation spawning stock progeny |
| url | https://izvestiya.tinro-center.ru/jour/article/view/200 |
| work_keys_str_mv | AT yurypdiakov sexagestructureandreproductionofyellowfinsoleilimandaasperaiintheeasternpartoftheokhotsksea |