Copepod swimming behavior, respiration, and expression of stress-related genes in response to high stocking densities

Birgitte Nilsson, Hans Henrik Jakobsen, Peter Stief, Guillaume Drillet, Benni Winding Hansen

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

Using copepod nauplii as live feed in aquaculture hatcheries could solve high mortality rates of first-feeding fish larvae due to malnutrition. However, implementing the use of copepod nauplii on an intensive production scale requires a stable production at preferably high densities, which is problematic for calanoid copepod species like Acartia tonsa. In the present study, we evaluated the response of copepods experiencing stress under high-density conditions by assessing the acute stress level of A. tonsa. Control density was at 100 ind. L−1 while the treatments were increased stepwise up to 10,000 ind. L−1. Three biological/physiological end-points were studied: swimming behavior, respiration rate and expression level of stress-related genes.
None of the elevated densities caused any significant change in swimming behavior, respiration rate or gene expression level. This study suggests that adults of A. tonsa do not exhibit any measurable acute stress response when exposed to high culture densities for 12 h.
OriginalsprogEngelsk
TidsskriftAquaculture Reports
Vol/bind6
Sider (fra-til)35-42
ISSN2352-5134
DOI
StatusUdgivet - 9 mar. 2017

Citer dette

Nilsson, Birgitte ; Jakobsen, Hans Henrik ; Stief, Peter ; Drillet, Guillaume ; Hansen, Benni Winding. / Copepod swimming behavior, respiration, and expression of stress-related genes in response to high stocking densities. I: Aquaculture Reports. 2017 ; Bind 6. s. 35-42.
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abstract = "Using copepod nauplii as live feed in aquaculture hatcheries could solve high mortality rates of first-feeding fish larvae due to malnutrition. However, implementing the use of copepod nauplii on an intensive production scale requires a stable production at preferably high densities, which is problematic for calanoid copepod species like Acartia tonsa. In the present study, we evaluated the response of copepods experiencing stress under high-density conditions by assessing the acute stress level of A. tonsa. Control density was at 100 ind. L−1 while the treatments were increased stepwise up to 10,000 ind. L−1. Three biological/physiological end-points were studied: swimming behavior, respiration rate and expression level of stress-related genes.None of the elevated densities caused any significant change in swimming behavior, respiration rate or gene expression level. This study suggests that adults of A. tonsa do not exhibit any measurable acute stress response when exposed to high culture densities for 12 h.",
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Copepod swimming behavior, respiration, and expression of stress-related genes in response to high stocking densities. / Nilsson, Birgitte; Jakobsen, Hans Henrik; Stief, Peter; Drillet, Guillaume; Hansen, Benni Winding.

I: Aquaculture Reports, Bind 6, 09.03.2017, s. 35-42.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Copepod swimming behavior, respiration, and expression of stress-related genes in response to high stocking densities

AU - Nilsson, Birgitte

AU - Jakobsen, Hans Henrik

AU - Stief, Peter

AU - Drillet, Guillaume

AU - Hansen, Benni Winding

PY - 2017/3/9

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AB - Using copepod nauplii as live feed in aquaculture hatcheries could solve high mortality rates of first-feeding fish larvae due to malnutrition. However, implementing the use of copepod nauplii on an intensive production scale requires a stable production at preferably high densities, which is problematic for calanoid copepod species like Acartia tonsa. In the present study, we evaluated the response of copepods experiencing stress under high-density conditions by assessing the acute stress level of A. tonsa. Control density was at 100 ind. L−1 while the treatments were increased stepwise up to 10,000 ind. L−1. Three biological/physiological end-points were studied: swimming behavior, respiration rate and expression level of stress-related genes.None of the elevated densities caused any significant change in swimming behavior, respiration rate or gene expression level. This study suggests that adults of A. tonsa do not exhibit any measurable acute stress response when exposed to high culture densities for 12 h.

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DO - 10.1016/j.aqrep.2017.03.001

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JO - Aquaculture Reports

JF - Aquaculture Reports

SN - 2352-5134

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