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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Oxford University Press
2020
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ftubarcepubl:oai:diposit.ub.edu:2445/191556 2023-05-15T15:08:09+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 Fuentes, Owen S. (Simon) Præbel, Kim Svensen, Camilla 2020-09-07 17 p. application/pdf http://hdl.handle.net/2445/191556 eng eng Oxford University Press Reproducció del document publicat a: https://doi.org/10.1093/plankt/fbaa039 Journal of Plankton Research, 2020, vol. 42, num. 5, p. 564-580 https://doi.org/10.1093/plankt/fbaa039 0142-7873 http://hdl.handle.net/2445/191556 727043 cc by (c) Barth-Jensen, Coralie et al., 2020 http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess CC-BY Temperatures baixes (Investigació) Estacions de l'any Producció d'ous Copèpodes Low temperature research Seasons Eggs production Copepoda info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2020 ftubarcepubl https://doi.org/10.1093/plankt/fbaa039 2023-01-12T21:53:11Z 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 Dipòsit Digital de la Universitat de Barcelona Arctic Journal of Plankton Research 42 5 564 580 |
institution |
Open Polar |
collection |
Dipòsit Digital de la Universitat de Barcelona |
op_collection_id |
ftubarcepubl |
language |
English |
topic |
Temperatures baixes (Investigació) Estacions de l'any Producció d'ous Copèpodes Low temperature research Seasons Eggs production Copepoda |
spellingShingle |
Temperatures baixes (Investigació) Estacions de l'any Producció d'ous Copèpodes Low temperature research Seasons Eggs production Copepoda Barth-Jensen, Coralie Koski, Marja Varpe, Øystein Glad, Peter Wangensteen Fuentes, Owen S. (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 |
Temperatures baixes (Investigació) Estacions de l'any Producció d'ous Copèpodes Low temperature research Seasons Eggs production Copepoda |
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 Fuentes, Owen S. (Simon) Præbel, Kim Svensen, Camilla |
author_facet |
Barth-Jensen, Coralie Koski, Marja Varpe, Øystein Glad, Peter Wangensteen Fuentes, Owen S. (Simon) 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 |
http://hdl.handle.net/2445/191556 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Copepods |
genre_facet |
Arctic Copepods |
op_relation |
Reproducció del document publicat a: https://doi.org/10.1093/plankt/fbaa039 Journal of Plankton Research, 2020, vol. 42, num. 5, p. 564-580 https://doi.org/10.1093/plankt/fbaa039 0142-7873 http://hdl.handle.net/2445/191556 727043 |
op_rights |
cc by (c) Barth-Jensen, Coralie et al., 2020 http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
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_ |
1766339566251278336 |