caa a22 4500 445296089 CHVBK 20180317142542.0 cr unu---uuuuu 170323e20100401xx s 000 0 eng 10.1134/S0032945210030069 doi (NATIONALLICENCE)springer-10.1134/S0032945210030069 Vertical distribution of eggs and larvae of the Baltic Sprat Sprattus sprattus balticus (Clupeidae) in relation to seasonal and diurnal variation [Elektronische Daten] [E. Karaseva, V. Ivanovich] Vertical distribution of eggs and larvae of the Baltic sprat Sprattus sprattus balticus was studied. Diurnal variation was revealed in the distribution of eggs of the first stage of development and larvae with a length of more than 5 mm, which is related to dynamics of spawning and vertical migrations of sprat larvae. Seasonal variation in the distribution of eggs manifested itself in: (1) widening of the range of occurrence from the zone of halocline at the beginning of spawning (winter) to the entire water column in spring-summer and (2) emergence in the surface layer in July of all stages of egg development unlike the presence from May to June mainly of the first stage of development. It is suggested that the ability of early ontogenetic stages of sprat to maintain in the surface layer depended on the extent of development of vertical gradients of density in the thermocline. Pleiades Publishing, Ltd., 2010 sprat nationallicence eggs nationallicence larvae nationallicence vertical distribution nationallicence Karaseva E. Atlantic Research Institute of Marine Fisheries and Oceanography, AtlantNIRO, ul. Dm. Donskogo 5, 236000, Kaliningrad, Russia aut Ivanovich V. Atlantic Research Institute of Marine Fisheries and Oceanography, AtlantNIRO, ul. Dm. Donskogo 5, 236000, Kaliningrad, Russia aut Journal of Ichthyology SP MAIK Nauka/Interperiodica 50/3(2010-04-01), 259-269 0032-9452 50:3<259 2010 50 11489 https://doi.org/10.1134/S0032945210030069 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0032945210030069 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Karaseva E. Atlantic Research Institute of Marine Fisheries and Oceanography, AtlantNIRO, ul. Dm. Donskogo 5, 236000, Kaliningrad, Russia aut NATIONALLICENCE 700 1- Ivanovich V. Atlantic Research Institute of Marine Fisheries and Oceanography, AtlantNIRO, ul. Dm. Donskogo 5, 236000, Kaliningrad, Russia aut NATIONALLICENCE 773 0- Journal of Ichthyology SP MAIK Nauka/Interperiodica 50/3(2010-04-01), 259-269 0032-9452 50:3<259 2010 50 11489 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer