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...
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Language: | English |
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Oxford University Press
2020
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Online Access: | https://hdl.handle.net/10037/19695 https://doi.org/10.1093/plankt/fbaa039 |
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ftunivtroemsoe:oai:munin.uit.no:10037/19695 2023-05-15T14:24:44+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 Koski, Marja Varpe, Øystein Glad, Peter Wangensteen, Owen S. Præbel, Kim Svensen, Camilla 2020-09-07 https://hdl.handle.net/10037/19695 https://doi.org/10.1093/plankt/fbaa039 eng eng Oxford University Press Barth-Jensen, C. (2023). Population dynamics and production of small, marine copepods in highly seasonal Arctic and sub-Arctic environments. (Doctoral thesis). https://hdl.handle.net/10037/28664 . Journal of Plankton Research Framsenteret: 628450 Barth-Jensen C, Varpe Ø, Koski M, 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. 2020:1-17 FRIDAID 1829030 doi:10.1093/plankt/fbaa039 0142-7873 1464-3774 https://hdl.handle.net/10037/19695 openAccess Copyright 2020 The Author(s) VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480::Marine biology: 497 Dyreplankton / Zooplankton Marin økologi / Marine ecology Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2020 ftunivtroemsoe https://doi.org/10.1093/plankt/fbaa039 2023-03-09T00:04:22Z 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 Arctic Zooplankton 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::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480::Marine biology: 497 Dyreplankton / Zooplankton Marin økologi / Marine ecology |
spellingShingle |
VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480::Marine biology: 497 Dyreplankton / Zooplankton Marin økologi / Marine ecology Barth-Jensen, Coralie Koski, Marja Varpe, Øystein Glad, Peter Wangensteen, Owen S. 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::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480::Marine biology: 497 Dyreplankton / Zooplankton Marin økologi / Marine ecology |
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 Koski, Marja Varpe, Øystein Glad, Peter Wangensteen, Owen S. Præbel, Kim Svensen, Camilla |
author_facet |
Barth-Jensen, Coralie Koski, Marja Varpe, Øystein Glad, Peter Wangensteen, Owen S. Præbel, Kim Svensen, Camilla |
author_sort |
Barth-Jensen, Coralie |
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/10037/19695 https://doi.org/10.1093/plankt/fbaa039 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Zooplankton Copepods |
genre_facet |
Arctic Arctic Zooplankton Copepods |
op_relation |
Barth-Jensen, C. (2023). Population dynamics and production of small, marine copepods in highly seasonal Arctic and sub-Arctic environments. (Doctoral thesis). https://hdl.handle.net/10037/28664 . Journal of Plankton Research Framsenteret: 628450 Barth-Jensen C, Varpe Ø, Koski M, 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. 2020:1-17 FRIDAID 1829030 doi:10.1093/plankt/fbaa039 0142-7873 1464-3774 https://hdl.handle.net/10037/19695 |
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 |
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1766297187353886720 |