Search results for "Baltic herring"

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Baltijas reņģes nārsta vietu un embrionālās attīstības raksturojums Rīgas jūras līcī

1994

Advisor: L. Duškina

ZooloģijaReņģu embrioloģijaEmbryology of fishesZivisReņģesZoologyBaltic herring:NATURAL SCIENCES::Biology::Organism biology::Animal physiology [Research Subject Categories]Nārsta vietas
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Long-Term Data Reveal the Associations of the Egg Quality With Abiotic Factors and Female Traits in the Baltic Herring Under Variable Environmental C…

2021

In fish, the lipid resources of the female form a link between the environment and progeny, contributing to the contents of the egg yolk. Variation of the environmental conditions is therefore expected to affect the egg quality via maternal pathways, reflecting the female’s response to the environmental factors before spawning. We investigated the content of lipids and thyroid hormones in the ovary and eggs of the Baltic herring during 1988–2019, when salinity of the Baltic Sea first declined and then stabilized to a lower level, and winters varied between severe and mild. The total lipid resources of spawning females decreased by 40–50% during the study, and the ovarian lipid concentration…

thyroid hormonesympäristötekijätSciencesilakkaQtemperatureGeneral. Including nature conservation geographical distributionlipiditQH1-199.5lisääntyminensalinitylipidsmunatsuolaisuuslämpötilaovaryeggBaltic herringFrontiers in Marine Science
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