РОЗПОДІЛ І СМЕРТНІСТЬ МЕЗОЗООПЛАНКТОНУ В ПРИБОСФОРСЬКИХ РАЙОНАХ ЧОРНОГО ТА МАРМУРОВОГО МОРІВ: СОЛОНІСТНА ТОЛЕРАНТНІСТЬ ACARTIA CLAUSI И ACARTIA TONSA
In the Bosphorus area of the Black and Marmara Seas in October 2005 the biomass of fodder zooplankton diminished from 6102.6 to 2363.7 mg m-2 in the direction of the Marmara Sea due to pronounced decrease in the biomass of copepods Calanus euxinus, Pseudocalanus elongatus, Acartia clausi and A. tons...
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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/429 |
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| Journal Title: | Marine Ecological Journal |
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Marine Ecological Journal| Summary: | In the Bosphorus area of the Black and Marmara Seas in October 2005 the biomass of fodder zooplankton diminished from 6102.6 to 2363.7 mg m-2 in the direction of the Marmara Sea due to pronounced decrease in the biomass of copepods Calanus euxinus, Pseudocalanus elongatus, Acartia clausi and A. tonsa. The share of dead individuals increased simultaneously. Maximum mortality (88 %) in dominant copepod A. clausi was found in the salinity gradient layer (25 – 38 ‰) of the Marmara Sea. In laboratory short-term experiments A. clausi collected in the Marmara Sea near the Bosphorus died after salinity increase from 18.9 ‰ to 29.4 ‰. Despite higher salinity tolerance of A. clausi sampled near the Prince Islands, these individuals cannot withstand long-term exposure to 39.8 ‰. On the contrary, A. tonsa survived successfully during salinity increase from 18.9 to 39.8 ‰. In comparison with A. clausi, A. tonsa possess higher levels of metabolism and locomotory activity. |
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