Gjøkvatn revisited: Repeated visual observations of plankton swarms in a subarctic forest lake
Distinct swarms of Bosmina longispina (Leydig, 1860) (Crustacea: Cladocera) were visually observed and described in Gjøkvatn, a Norwegian forest lake at 69°N, in 1969 and again in 1996 and 2021. The repeated observations after many years show that Bosmina swarms occur regularly in the lake. The swar...
Published in: | Journal of Crustacean Biology |
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Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Oxford University Press
2022
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Subjects: | |
Online Access: | https://hdl.handle.net/10037/26660 https://doi.org/10.1093/jcbiol/ruac011 |
Summary: | Distinct swarms of Bosmina longispina (Leydig, 1860) (Crustacea: Cladocera) were visually observed and described in Gjøkvatn, a Norwegian forest lake at 69°N, in 1969 and again in 1996 and 2021. The repeated observations after many years show that Bosmina swarms occur regularly in the lake. The swarming is likely to be an anti-predation behaviour against the predatory cladoceran Polyphemus pediculus (Linnaeus, 1761). |
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