Diversity, abundance, and life histories of littoral chydorids (Cladocera: Chydoridae) in a subarctic European lake
Littoral chydorids were sampled with a bottom sledge in Takvatn, a 15 km2 north Norwegian oligotrophic lake with poor vegetation. Three out of eight recorded species of chydorids were common, with abundance minima in late summer and maxima in autumn. Eurycercus lamellatus (O.F. Müller, 1776) and Acr...
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ftunivtroemsoe:oai:munin.uit.no:10037/20480 2023-05-15T18:28:09+02:00 Diversity, abundance, and life histories of littoral chydorids (Cladocera: Chydoridae) in a subarctic European lake Klemetsen, Anders Aase, Berit Margrethe Amundsen, Per-Arne 2020-07-22 https://hdl.handle.net/10037/20480 https://doi.org/10.1093/jcbiol/ruaa048 eng eng Oxford University Press Journal of Crustacean Biology Klemetsen A, Aase BM, Amundsen P-A. Diversity, abundance, and life histories of littoral chydorids (Cladocera: Chydoridae) in a subarctic European lake. Journal of Crustacean Biology. 2020;40(5):534-543 FRIDAID 1868525 doi:10.1093/jcbiol/ruaa048 0278-0372 1937-240X https://hdl.handle.net/10037/20480 openAccess Copyright 2020 The Author(s) VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2020 ftunivtroemsoe https://doi.org/10.1093/jcbiol/ruaa048 2021-06-25T17:57:58Z Littoral chydorids were sampled with a bottom sledge in Takvatn, a 15 km2 north Norwegian oligotrophic lake with poor vegetation. Three out of eight recorded species of chydorids were common, with abundance minima in late summer and maxima in autumn. Eurycercus lamellatus (O.F. Müller, 1776) and Acroperus harpae (Baird, 1835) were monocyclic, whereas Chydorus sphaericus (O.F. Müller, 1776) was seemingly acyclic. Females of E. lamellatus appeared in early June and grew to maximum sizes of 2–2.5 mm in early August. Parthenogenesis started in late July and two summer generations could be distinguished by size distributions. Gamogenesis took place in September. Acroperus harpae females appeared in early June and grew to maximum sizes of around 0.7 mm in early August. Parthenogenesis started in early July and gamogenesis took place in September and October. Parthenogenetic females of C. sphaericus appeared already at ice-break and had constant sizes of around 0.4 mm through the entire season. Males or ephippial females were not observed. The acyclic life history may be an adaptation to the challenging environment of this subarctic lake. Summer generations could not be distinguished in the two small-sized species, but both populations reached high abundances in autumn. The abundance of E. lamellatus increased from August, but then decreased, possibly as a result of fish predation. We argue that the present results are typical for large oligotrophic lakes in subarctic Europe. Article in Journal/Newspaper Subarctic University of Tromsø: Munin Open Research Archive Journal of Crustacean Biology 40 5 534 543 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Klemetsen, Anders Aase, Berit Margrethe Amundsen, Per-Arne Diversity, abundance, and life histories of littoral chydorids (Cladocera: Chydoridae) in a subarctic European lake |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
description |
Littoral chydorids were sampled with a bottom sledge in Takvatn, a 15 km2 north Norwegian oligotrophic lake with poor vegetation. Three out of eight recorded species of chydorids were common, with abundance minima in late summer and maxima in autumn. Eurycercus lamellatus (O.F. Müller, 1776) and Acroperus harpae (Baird, 1835) were monocyclic, whereas Chydorus sphaericus (O.F. Müller, 1776) was seemingly acyclic. Females of E. lamellatus appeared in early June and grew to maximum sizes of 2–2.5 mm in early August. Parthenogenesis started in late July and two summer generations could be distinguished by size distributions. Gamogenesis took place in September. Acroperus harpae females appeared in early June and grew to maximum sizes of around 0.7 mm in early August. Parthenogenesis started in early July and gamogenesis took place in September and October. Parthenogenetic females of C. sphaericus appeared already at ice-break and had constant sizes of around 0.4 mm through the entire season. Males or ephippial females were not observed. The acyclic life history may be an adaptation to the challenging environment of this subarctic lake. Summer generations could not be distinguished in the two small-sized species, but both populations reached high abundances in autumn. The abundance of E. lamellatus increased from August, but then decreased, possibly as a result of fish predation. We argue that the present results are typical for large oligotrophic lakes in subarctic Europe. |
format |
Article in Journal/Newspaper |
author |
Klemetsen, Anders Aase, Berit Margrethe Amundsen, Per-Arne |
author_facet |
Klemetsen, Anders Aase, Berit Margrethe Amundsen, Per-Arne |
author_sort |
Klemetsen, Anders |
title |
Diversity, abundance, and life histories of littoral chydorids (Cladocera: Chydoridae) in a subarctic European lake |
title_short |
Diversity, abundance, and life histories of littoral chydorids (Cladocera: Chydoridae) in a subarctic European lake |
title_full |
Diversity, abundance, and life histories of littoral chydorids (Cladocera: Chydoridae) in a subarctic European lake |
title_fullStr |
Diversity, abundance, and life histories of littoral chydorids (Cladocera: Chydoridae) in a subarctic European lake |
title_full_unstemmed |
Diversity, abundance, and life histories of littoral chydorids (Cladocera: Chydoridae) in a subarctic European lake |
title_sort |
diversity, abundance, and life histories of littoral chydorids (cladocera: chydoridae) in a subarctic european lake |
publisher |
Oxford University Press |
publishDate |
2020 |
url |
https://hdl.handle.net/10037/20480 https://doi.org/10.1093/jcbiol/ruaa048 |
genre |
Subarctic |
genre_facet |
Subarctic |
op_relation |
Journal of Crustacean Biology Klemetsen A, Aase BM, Amundsen P-A. Diversity, abundance, and life histories of littoral chydorids (Cladocera: Chydoridae) in a subarctic European lake. Journal of Crustacean Biology. 2020;40(5):534-543 FRIDAID 1868525 doi:10.1093/jcbiol/ruaa048 0278-0372 1937-240X https://hdl.handle.net/10037/20480 |
op_rights |
openAccess Copyright 2020 The Author(s) |
op_doi |
https://doi.org/10.1093/jcbiol/ruaa048 |
container_title |
Journal of Crustacean Biology |
container_volume |
40 |
container_issue |
5 |
container_start_page |
534 |
op_container_end_page |
543 |
_version_ |
1766210501975474176 |