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Title:Small but voracious : invasive generalist consumes more zooplankton in winter than native planktivore
Authors:ID Ogorelec, Žiga (Author)
ID Brinker, Alexander (Author)
ID Straile, Dietmar (Author)
Files:URL URL - Source URL, visit https://doi.org/10.3897/neobiota.78.86788
 
.pdf PDF - Presentation file, download (4,43 MB)
MD5: 009FAA1C0A1B9E1805B0218E9555759B
 
Language:English
Typology:1.01 - Original Scientific Article
Organization:Logo NIB - National Institute of Biology
Abstract:In recent years, Lake Constance has experienced an invasion and domination of three-spined stickleback (Gasterosteus aculeatus) in the pelagic zone, which has coincided with a decline in the native whitefish (Coregonus wartmanni) population. Similar massive invasions of sticklebacks into pelagic zones have been recognized also in marine areas or small lakes worldwide. However, their diet overlaps with native species is rarely evaluated, especially in the winter season, which often presents a bottleneck for fish survival. In this study, we compared the diet of pelagic sticklebacks with the diet of the substantially larger native whitefish in different seasons, to evaluate the threat of the recent stickleback invasion on whitefish populations. By monthly sampling of zooplankton and both fish species diets, we could demonstrate that sticklebacks select similar prey throughout most of the year and consume more prey than whitefish during the winter. With relations between prey availability and prey selection, interspecific and intraspecific seasonal diet variability and indices like a prey-specific index of relative importance, we discuss the importance of zooplankton species traits and abundance for whitefish and stickleback predation. This study shows that sticklebacks, despite their small size, represent a serious potential diet competitor to native planktivorous fish. Sticklebacks quickly adapt to new environments, and thus we advocate precautions regarding their introduction into similar lakes as Lake Constance, as this could cause irreversible ecological changes.
Keywords:Bythotrephes longimanus, Lake Constance, overwintering strategy, pelagic whitefish diet, planktivory, predator size, seasonal prey selection, stickleback invasion
Publication status:Published
Publication version:Version of Record
Publication date:23.11.2022
Year of publishing:2022
Number of pages:str. 71-97
Numbering:Vol. 78
PID:20.500.12556/DiRROS-19402 New window
UDC:574
ISSN on article:1314-2488
DOI:10.3897/neobiota.78.86788 New window
COBISS.SI-ID:133759235 New window
Note:Nasl. z nasl. zaslona; Opis vira z dne 14. 12. 2022;
Publication date in DiRROS:18.07.2024
Views:661
Downloads:330
Metadata:XML DC-XML DC-RDF
:
OGORELEC, Žiga, BRINKER, Alexander and STRAILE, Dietmar, 2022, Small but voracious : invasive generalist consumes more zooplankton in winter than native planktivore. NeoBiota [online]. 2022. Vol. 78, p. 71–97. [Accessed 23 April 2025]. DOI 10.3897/neobiota.78.86788. Retrieved from: https://dirros.openscience.si/IzpisGradiva.php?lang=eng&id=19402
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Record is a part of a journal

Title:NeoBiota
Shortened title:NeoBiota
Publisher:Pensoft Publishers
ISSN:1314-2488
COBISS.SI-ID:522028825 New window

Document is financed by a project

Funder:Other - Other funder or multiple funders
Funding programme:German Research Foundation
Project number:298726046/GRK2272
Acronym:RTG R3
Funder:Other - Other funder or multiple funders
Funding programme:Bavarian State Ministry of the Environment and Consumer Protection
Funder:Other - Other funder or multiple funders
Funding programme:Public Scholarship, Development, Disability and Maintenance Fund of the Republic of Slovenia
Project number:11013-8/2021
Name:Ad futura scholarship
Funder:EC - European Commission
Funding programme:Interreg V programme
Name:Alpenrhein-Bodensee-Hochrhein (Germany/Austria/Switzerland/Liechtenstein)

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

Language:Slovenian
Keywords:invazivne ribe, velikost plenilcev, sezonska izbira plena, plenjenje planktona, Bodensko jezero


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