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Respiratory response to temperature of three populations of Aurelia aurita polyps in northern Europe

Respiratory response to temperature of three populations of Aurelia aurita polyps in northern Europe
Respiratory response to temperature of three populations of Aurelia aurita polyps in northern Europe
The benthic life stage (polyp or scyphistoma) of the bloom-forming jellyfish, Aurelia aurita (Linnaeus, 1759), also known as the moon jellyfish, contributes to the seasonal occurrence and abundance of medusa blooms via asexual reproduction. A. aurita is widely distributed in coastal areas in northern Europe, and one of the most studied jellyfish species. While the physiology of the visible medusa is largely understood, understanding of the physiology of the perennial benthic life-stage is scarce. To measure the physiological tolerance of A. aurita, the scyphistoma’s temperature sensitivity across its distributional range was investigated. Respiration rates of polyps from three northern European locations exposed to 11 temperatures between 2 and 22 °C were measured. There was a significant difference in respiration rate among the three polyp populations, which may reflect on differences in their thermal tolerance window. A critical temperature was reached at 14 °C with the metabolic rate decreasing below and above that temperature. This pattern was less pronounced in the Norwegian population but polyps were able to survive, at least temporarily, those temperatures exceeding their natural range. While polyps collected from northern Norway, with a narrow environmental thermal window, displayed a low baseline metabolism with a Q10 value of 1.2, polyps from southern England and Scotland had Q10 values of 1.6 and 2.5, respectively. Differences in polyps’ respiration rates across their distributional range suggest that populations have evolved adaptations to local environmental thermal conditions.
e0177913
Hoehn, Danja, P.
fcf43cff-a538-4314-9cb0-4726d5923fd9
Lucas, Cathy H.
521743e3-b250-4c6b-b084-780af697d6bf
Thatje, S.
f1011fe3-1048-40c0-97c1-e93b796e6533
Hoehn, Danja, P.
fcf43cff-a538-4314-9cb0-4726d5923fd9
Lucas, Cathy H.
521743e3-b250-4c6b-b084-780af697d6bf
Thatje, S.
f1011fe3-1048-40c0-97c1-e93b796e6533

Hoehn, Danja, P., Lucas, Cathy H. and Thatje, S. (2017) Respiratory response to temperature of three populations of Aurelia aurita polyps in northern Europe. PLoS ONE, 12 (5), e0177913. (doi:10.1371/journal.pone.0177913).

Record type: Article

Abstract

The benthic life stage (polyp or scyphistoma) of the bloom-forming jellyfish, Aurelia aurita (Linnaeus, 1759), also known as the moon jellyfish, contributes to the seasonal occurrence and abundance of medusa blooms via asexual reproduction. A. aurita is widely distributed in coastal areas in northern Europe, and one of the most studied jellyfish species. While the physiology of the visible medusa is largely understood, understanding of the physiology of the perennial benthic life-stage is scarce. To measure the physiological tolerance of A. aurita, the scyphistoma’s temperature sensitivity across its distributional range was investigated. Respiration rates of polyps from three northern European locations exposed to 11 temperatures between 2 and 22 °C were measured. There was a significant difference in respiration rate among the three polyp populations, which may reflect on differences in their thermal tolerance window. A critical temperature was reached at 14 °C with the metabolic rate decreasing below and above that temperature. This pattern was less pronounced in the Norwegian population but polyps were able to survive, at least temporarily, those temperatures exceeding their natural range. While polyps collected from northern Norway, with a narrow environmental thermal window, displayed a low baseline metabolism with a Q10 value of 1.2, polyps from southern England and Scotland had Q10 values of 1.6 and 2.5, respectively. Differences in polyps’ respiration rates across their distributional range suggest that populations have evolved adaptations to local environmental thermal conditions.

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Accepted/In Press date: 10 May 2017
e-pub ahead of print date: 17 May 2017
Organisations: Ocean and Earth Science, Marine Biology & Ecology

Identifiers

Local EPrints ID: 408175
URI: http://eprints.soton.ac.uk/id/eprint/408175
PURE UUID: 2a8c1891-5cf4-4fdb-bf10-3be5d0a8944d
ORCID for Cathy H. Lucas: ORCID iD orcid.org/0000-0002-5929-7481

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Date deposited: 16 May 2017 04:02
Last modified: 28 Apr 2022 04:06

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Contributors

Author: Danja, P. Hoehn
Author: Cathy H. Lucas ORCID iD
Author: S. Thatje

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