Impact of temperature and pyrene exposure on the functional response of males and females of the copepod Calanus finmarchicus

Khuong Van Dinh; Maria Winberg Olsen; Dag Altin; Bent Vismann; Torkel Gissel Nielsen

doi:10.1007/s11356-019-06078-x

Impact of temperature and pyrene exposure on the functional response of males and females of the copepod Calanus finmarchicus

Khuong Van Dinh, Maria Winberg Olsen, Dag Altin, Bent Vismann, Torkel Gissel Nielsen

Marine Biology

4 Citations (Scopus)

Abstract

We know very little about the effects of two global stressors, elevated temperature and contaminants, on the grazing of marine copepods. To address this issue, we tested the hypotheses that the individual and combined effects of these two stressors may reduce grazing rates and may depend on food availability and gender. We exposed male and female Calanus finmarchicus copepods to pyrene at two temperatures (10 and 14 °C) and six food concentrations (25–800 μg C Rhodomonas baltica L⁻¹) and measured fecal pellet size, and grazing rate (GR) from pellet production. Males had smaller fecal pellets and lower GR than did females. Temperature and pyrene exposure had no effect on pellet size. Temperature alone had no effect on GR of males, but females had lower GR at elevated temperature. Pyrene-exposed males and females had lower GR only at the food concentrations of 200–800 μg C R. baltica L⁻¹ and those patterns were independent of temperature. Pyrene-induced reduction in GR was stronger in females than in males. The negative effects of both elevated temperature and pyrene may reduce the abundance and trophic success of C. finmarchicus in a warmer, more polluted future.

Original language	English
Journal	Environmental Science and Pollution Research
Volume	26
Issue number	28
Pages (from-to)	29327-29333
ISSN	0944-1344
DOIs	https://doi.org/10.1007/s11356-019-06078-x
Publication status	Published - 1 Oct 2019

Keywords

Climate change
Grazing rate
Marine copepods
Organic contaminants
Pelagic community
Primary grazers

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/s11356-019-06078-x

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Impact of temperature and pyrene exposure on the functional response of males and females of the copepod Calanus finmarchicus. / Dinh, Khuong Van; Olsen, Maria Winberg; Altin, Dag et al.

In: Environmental Science and Pollution Research, Vol. 26, No. 28, 01.10.2019, p. 29327-29333.

Research output: Contribution to journal › Journal article › Research › peer-review

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abstract = "We know very little about the effects of two global stressors, elevated temperature and contaminants, on the grazing of marine copepods. To address this issue, we tested the hypotheses that the individual and combined effects of these two stressors may reduce grazing rates and may depend on food availability and gender. We exposed male and female Calanus finmarchicus copepods to pyrene at two temperatures (10 and 14 °C) and six food concentrations (25–800 μg C Rhodomonas baltica L−1) and measured fecal pellet size, and grazing rate (GR) from pellet production. Males had smaller fecal pellets and lower GR than did females. Temperature and pyrene exposure had no effect on pellet size. Temperature alone had no effect on GR of males, but females had lower GR at elevated temperature. Pyrene-exposed males and females had lower GR only at the food concentrations of 200–800 μg C R. baltica L−1 and those patterns were independent of temperature. Pyrene-induced reduction in GR was stronger in females than in males. The negative effects of both elevated temperature and pyrene may reduce the abundance and trophic success of C. finmarchicus in a warmer, more polluted future.",

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AU - Dinh, Khuong Van

AU - Olsen, Maria Winberg

AU - Altin, Dag

AU - Vismann, Bent

AU - Nielsen, Torkel Gissel

PY - 2019/10/1

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AB - We know very little about the effects of two global stressors, elevated temperature and contaminants, on the grazing of marine copepods. To address this issue, we tested the hypotheses that the individual and combined effects of these two stressors may reduce grazing rates and may depend on food availability and gender. We exposed male and female Calanus finmarchicus copepods to pyrene at two temperatures (10 and 14 °C) and six food concentrations (25–800 μg C Rhodomonas baltica L−1) and measured fecal pellet size, and grazing rate (GR) from pellet production. Males had smaller fecal pellets and lower GR than did females. Temperature and pyrene exposure had no effect on pellet size. Temperature alone had no effect on GR of males, but females had lower GR at elevated temperature. Pyrene-exposed males and females had lower GR only at the food concentrations of 200–800 μg C R. baltica L−1 and those patterns were independent of temperature. Pyrene-induced reduction in GR was stronger in females than in males. The negative effects of both elevated temperature and pyrene may reduce the abundance and trophic success of C. finmarchicus in a warmer, more polluted future.

KW - Climate change

KW - Grazing rate

KW - Marine copepods

KW - Organic contaminants

KW - Pelagic community

KW - Primary grazers

U2 - 10.1007/s11356-019-06078-x

DO - 10.1007/s11356-019-06078-x

M3 - Journal article

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SN - 0944-1344

VL - 26

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JO - Environmental Science and Pollution Research

JF - Environmental Science and Pollution Research

IS - 28

ER -

Impact of temperature and pyrene exposure on the functional response of males and females of the copepod Calanus finmarchicus

Abstract

Keywords

UN SDGs

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