Temperature-dependent egg production and egg hatching rates of small egg-carrying and broadcast-spawning copepods Oithona similis, Microsetella norvegica and Microcalanus pusillus
Reproductive rates of copepods are temperature-dependent, but poorly known for small copepods at low temperatures, hindering the predictions of population dynamics and secondary production in high-latitude ecosystems. We investigated egg hatching rates, hatching success and egg production of the sma...
Published in: | Journal of Plankton Research |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Oxford University Press
2020
|
Subjects: | |
Online Access: | https://hdl.handle.net/10037/19326 https://doi.org/10.1093/plankt/fbaa039 |
id |
ftunivtroemsoe:oai:munin.uit.no:10037/19326 |
---|---|
record_format |
openpolar |
spelling |
ftunivtroemsoe:oai:munin.uit.no:10037/19326 2023-05-15T15:08:40+02:00 Temperature-dependent egg production and egg hatching rates of small egg-carrying and broadcast-spawning copepods Oithona similis, Microsetella norvegica and Microcalanus pusillus Barth-Jensen, Coralie Marie Christine Koski, Marja Varpe, Øystein Glad, Peter Wangensteen, Owen Simon Præbel, Kim Svensen, Camilla 2020-09-07 https://hdl.handle.net/10037/19326 https://doi.org/10.1093/plankt/fbaa039 eng eng Oxford University Press Journal of Plankton Research Barth-Jensen C, Koski M, Varpe Ø, Glad P, Wangensteen OS, Præbel K, Svensen C. Temperature-dependent egg production and egg hatching rates of small egg-carrying and broadcast-spawning copepods Oithona similis, Microsetella norvegica and Microcalanus pusillus. Journal of Plankton Research. 2020;42(5):564-580 FRIDAID 1829158 doi:10.1093/plankt/fbaa039 0142-7873 1464-3774 https://hdl.handle.net/10037/19326 openAccess Copyright 2020 The Author(s) VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2020 ftunivtroemsoe https://doi.org/10.1093/plankt/fbaa039 2021-06-25T17:57:41Z Reproductive rates of copepods are temperature-dependent, but poorly known for small copepods at low temperatures, hindering the predictions of population dynamics and secondary production in high-latitude ecosystems. We investigated egg hatching rates, hatching success and egg production of the small copepods Oithona similis and Microsetella norvegica (sac spawners) and Microcalanus pusillus (broadcast spawner) between March and August. Incubations were performed at ecologically relevant temperatures between 1.3 and 13.2°C, and egg production rates were calculated. All egg hatching rates were positively correlated to temperature, although with large species-specific differences. At the lowest temperatures, M. pusillus eggs hatched within 4 days, whereas the eggs from sac spawners took 3–8 weeks to hatch. The egg hatching success was ≤25% for M. pusillus , >75% for O. similis and variable for M. norvegica . The maximum weight-specific egg production rate (μg C μg−1 C d−1) of M. pusillus was higher (0.22) than O. similis (0.12) and M. norvegica (0.06). M. norvegica reproduction peaked at 6–8°C, the prevailing in situ temperatures during its reproductive period. The difference in reproductive rates indicates species-specific thermal plasticity for the three copepods, which could have implications for present and future population dynamics of the species in arctic fjords. Article in Journal/Newspaper Arctic Copepods University of Tromsø: Munin Open Research Archive Arctic Journal of Plankton Research 42 5 564 580 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 |
spellingShingle |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 Barth-Jensen, Coralie Marie Christine Koski, Marja Varpe, Øystein Glad, Peter Wangensteen, Owen Simon Præbel, Kim Svensen, Camilla Temperature-dependent egg production and egg hatching rates of small egg-carrying and broadcast-spawning copepods Oithona similis, Microsetella norvegica and Microcalanus pusillus |
topic_facet |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 |
description |
Reproductive rates of copepods are temperature-dependent, but poorly known for small copepods at low temperatures, hindering the predictions of population dynamics and secondary production in high-latitude ecosystems. We investigated egg hatching rates, hatching success and egg production of the small copepods Oithona similis and Microsetella norvegica (sac spawners) and Microcalanus pusillus (broadcast spawner) between March and August. Incubations were performed at ecologically relevant temperatures between 1.3 and 13.2°C, and egg production rates were calculated. All egg hatching rates were positively correlated to temperature, although with large species-specific differences. At the lowest temperatures, M. pusillus eggs hatched within 4 days, whereas the eggs from sac spawners took 3–8 weeks to hatch. The egg hatching success was ≤25% for M. pusillus , >75% for O. similis and variable for M. norvegica . The maximum weight-specific egg production rate (μg C μg−1 C d−1) of M. pusillus was higher (0.22) than O. similis (0.12) and M. norvegica (0.06). M. norvegica reproduction peaked at 6–8°C, the prevailing in situ temperatures during its reproductive period. The difference in reproductive rates indicates species-specific thermal plasticity for the three copepods, which could have implications for present and future population dynamics of the species in arctic fjords. |
format |
Article in Journal/Newspaper |
author |
Barth-Jensen, Coralie Marie Christine Koski, Marja Varpe, Øystein Glad, Peter Wangensteen, Owen Simon Præbel, Kim Svensen, Camilla |
author_facet |
Barth-Jensen, Coralie Marie Christine Koski, Marja Varpe, Øystein Glad, Peter Wangensteen, Owen Simon Præbel, Kim Svensen, Camilla |
author_sort |
Barth-Jensen, Coralie Marie Christine |
title |
Temperature-dependent egg production and egg hatching rates of small egg-carrying and broadcast-spawning copepods Oithona similis, Microsetella norvegica and Microcalanus pusillus |
title_short |
Temperature-dependent egg production and egg hatching rates of small egg-carrying and broadcast-spawning copepods Oithona similis, Microsetella norvegica and Microcalanus pusillus |
title_full |
Temperature-dependent egg production and egg hatching rates of small egg-carrying and broadcast-spawning copepods Oithona similis, Microsetella norvegica and Microcalanus pusillus |
title_fullStr |
Temperature-dependent egg production and egg hatching rates of small egg-carrying and broadcast-spawning copepods Oithona similis, Microsetella norvegica and Microcalanus pusillus |
title_full_unstemmed |
Temperature-dependent egg production and egg hatching rates of small egg-carrying and broadcast-spawning copepods Oithona similis, Microsetella norvegica and Microcalanus pusillus |
title_sort |
temperature-dependent egg production and egg hatching rates of small egg-carrying and broadcast-spawning copepods oithona similis, microsetella norvegica and microcalanus pusillus |
publisher |
Oxford University Press |
publishDate |
2020 |
url |
https://hdl.handle.net/10037/19326 https://doi.org/10.1093/plankt/fbaa039 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Copepods |
genre_facet |
Arctic Copepods |
op_relation |
Journal of Plankton Research Barth-Jensen C, Koski M, Varpe Ø, Glad P, Wangensteen OS, Præbel K, Svensen C. Temperature-dependent egg production and egg hatching rates of small egg-carrying and broadcast-spawning copepods Oithona similis, Microsetella norvegica and Microcalanus pusillus. Journal of Plankton Research. 2020;42(5):564-580 FRIDAID 1829158 doi:10.1093/plankt/fbaa039 0142-7873 1464-3774 https://hdl.handle.net/10037/19326 |
op_rights |
openAccess Copyright 2020 The Author(s) |
op_doi |
https://doi.org/10.1093/plankt/fbaa039 |
container_title |
Journal of Plankton Research |
container_volume |
42 |
container_issue |
5 |
container_start_page |
564 |
op_container_end_page |
580 |
_version_ |
1766339984428630016 |