| Issue |
BIO Web Conf.
Volume 141, 2024
IX International Scientific Conference on Agricultural Science 2024 “Current State, Problems and Prospects for the Development of Agricultural Science” (AGRICULTURAL SCIENCE 2024)
|
|
|---|---|---|
| Article Number | 03013 | |
| Number of page(s) | 7 | |
| Section | Aquatic Ecosystems and Marine Conservation Biology | |
| DOI | https://doi.org/10.1051/bioconf/202414103013 | |
| Published online | 21 November 2024 | |
Downstream Migration of Burbot (Lota lota) Larvae in the Subglacial Period
Tobolsk complex scientific station UrB RAS, 16, Osipova, St., 626150, Tobolsk, Russia
* Corresponding author: chemaginaa@yandex.ru
The research was carried out in the Ob-Irtysh basin on the Irtysh River. The studied section of the river is located in Western Siberia in the Tyumen region. The dynamics of the downstream migration of burbot larvae were assessed in the period preceding the spring ice melting. In the river flow, using a stationary trawl, larvae were caught at equal intervals in the morning, afternoon and evening. The research period was 2 weeks (31.03.2023-14.04.2023). As a result of the research, it was established that there were 2 peaks of migration activity and density of burbot larvae in the periods 3.04-8.04 – the first and 10.04-12.04 – the second. The average density values in the specified periods were 0.066 and 0.034 ind./m3, with current speeds of 0.317 m/s and 0.450 m/s, respectively. The body length of the burbot larvae during the study period varied from 3.23 to 3.76 mm. Analysis of the dynamics during the migration period revealed a trend towards an increase in the body length of the larvae during the study period. Over the entire period of research, it was established that migration has a daily rhythm: it intensifies during the twilight period and slows down during the day.
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.