naa a22 4500 510765408 CHVBK 20180411083154.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.1134/S0001437013040085 doi (NATIONALLICENCE)springer-10.1134/S0001437013040085 Different effects of increased water temperature on egg production of Calanus finmarchicus and C. glacialis [Elektronische Daten] [A. Pasternak, E. Arashkevich, U. Grothe, A. Nikishina, K. Solovyev] Two copepod species, Calanus finmarchicus (a widespread North Atlantic species) and C. glacialis (an Arctic species), are dominant in the zooplankton of Arctic seas. We hypothesized that the anticipated warming in the Arctic might have different effects on the arctic and boreal species. The effect of temperature on egg production rate (EPR) in these species at temperatures of 0, 2.5, 5, 7.5, and 10°C under contrasting feeding conditions was assessed in 5-day-long experiments. The EPR of the fed C. finmarchicus increased with temperature over the entire tested range. On the contrary, the EPR of C. glacialis increased only in the range of 0-5°C and dropped with further temperature growth. The difference in the influence of temperature on reproduction of these two species is statistically significant. Feeding conditions have a considerable effect on the C. finmarchicus EPR. The EPRs of the female C. glacialis that fed or starved for 5 days displayed no significant difference. These results suggest that the C. finmarchicus EPR increases with temperature under favorable feeding conditions, whereas the C. glacialis EPR decreases at a temperature over 5°C independently of the feeding conditions. This allows for prediction of the shift in abundances of these two species in pelagic communities of Arctic seas in the case of a warming scenario. Pleiades Publishing, Inc., 2013 Pasternak A. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia aut Arashkevich E. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia aut Grothe U. University of Troms, Troms, Norway aut Nikishina A. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia aut Solovyev K. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia aut Oceanology Springer US; http://www.springer-ny.com 53/5(2013-09-01), 547-553 0001-4370 53:5<547 2013 53 11491 https://doi.org/10.1134/S0001437013040085 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0001437013040085 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pasternak A. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia aut NATIONALLICENCE 700 1- Arashkevich E. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia aut NATIONALLICENCE 700 1- Grothe U. University of Troms, Troms, Norway aut NATIONALLICENCE 700 1- Nikishina A. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia aut NATIONALLICENCE 700 1- Solovyev K. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia aut NATIONALLICENCE 773 0- Oceanology Springer US; http://www.springer-ny.com 53/5(2013-09-01), 547-553 0001-4370 53:5<547 2013 53 11491 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer