Details zur Publikation

Kategorie Textpublikation
Referenztyp Preprints
DOI 10.22541/au.173452888.80789244/v1
Titel (primär) How to reproduce in the Siberian winter: proteome dynamics reveals timing of reproduction-related processes in a Baikal endemic amphipod
Autor Lipaeva, P.; Drozdova, P.; Vereshchagina, K.; Jakob, L.; Schubert, K.; Bedulina, D.; Luckenbach, T. ORCID logo
Quelle Authorea
Erscheinungsjahr 2024
Department ETOX; MOLTOX
Sprache englisch
Topic T9 Healthy Planet
Abstract The vast global freshwater biodiversity hotspot Lake Baikal is located in a region with extremely cold winters and warm summers. Although conditions in winter with low water temperatures and relative scarcity of food may seem unfavorable for reproduction, Baikal is inhabited by a major endemic winter-reproducing amphipod species complex. We analyzed sex-specific seasonal proteome dynamics in a common representative species of this complex, Eulimnogammarus verrucosus, sampled in the field in fall, winter, and summer 2019/20. Especially female proteomes were dominated by sampling time point-specific hallmarks of reproduction-related processes and events, particularly related to formation of the eggs and embryo development. Proteome characteristics indicated that processes requiring the supply of external resources tend to take place at times of higher food availability before and after the winter: Thus, formation of the eggs in female E. verrucosus starts already in summer and juveniles hatch from eggs in spring; in winter, processes supplied by stored resources take place, such as embryo development in the egg fueled by the egg yolk. Adjustments of the amphipods of both sexes to environmental winter conditions were reflected by abundance changes of enzymes of the digestive system, indicating a response to seasonal diet changes, and of enzymes involved in RNA biosynthesis and protein folding, possibly related to decreasing water temperatures. The here analyzed proteomes reveal a strategy of a cold-adapted amphipod to deal with the unique and extreme environmental conditions of Baikal, directed to pace and timing of the resource depending, reproduction-related processes in relation to environmental parameters.
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=30189
Lipaeva, P., Drozdova, P., Vereshchagina, K., Jakob, L., Schubert, K., Bedulina, D., Luckenbach, T. (2024):
How to reproduce in the Siberian winter: proteome dynamics reveals timing of reproduction-related processes in a Baikal endemic amphipod
Authorea 10.22541/au.173452888.80789244/v1