МІНЛИВІСТЬ РЕПРОДУКТИВНОГО ПОТЕНЦІАЛУ ЧОРНОМОРСЬКОГО ШПРОТУ (SPRATTUS SPRATTUS PHALERICUS) У ЗВ'ЯЗКУ З ТЕМПЕРАТУРНИМИ УМОВАМИ ДОВКІЛЛЯ
The results of the study of the inter-annual and intra-annual (seasonal) variability of several individual and population reproductive parameters of the Black Sea sprat Sprattus sprattus phalericus (Risso, 1826) from the water area of the south-western coast of Crimea are presented. Basis of reprodu...
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| Date: | 2023 |
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| Main Authors: | , , |
| Format: | Article |
| Language: | Ukrainian |
| Published: |
Marine Ecological Journal
2023
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| Subjects: | |
| Online Access: | https://mej.od.ua/index.php/mej/article/view/521 |
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| Journal Title: | Marine Ecological Journal |
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Marine Ecological Journal| Summary: | The results of the study of the inter-annual and intra-annual (seasonal) variability of several individual and population reproductive parameters of the Black Sea sprat Sprattus sprattus phalericus (Risso, 1826) from the water area of the south-western coast of Crimea are presented. Basis of reproductive potential – 80.3 % of the total number of individual simultaneous spawning – takes place within two months – December and January. Overall duration of the spawning season varies from 4.6 to 5.8 months during different years. Optimal spawning temperature limits were specified as 7 – 12°С. The concept of the "most favorable spawning temperature" (8 – 9°С) was suggested, within the limits of which 56.1 % of the total simultaneous spawning were registered. Near positive correlation between the spawning activity (spawning frequency) and average water temperature during winter season was revealed and proposed as a predictor for assessment of the population reproductive potential and commercial stock of the sprat. |
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