Lipid storage patterns in marine copepods: environmental, ecological

Cavallo, Alessandro ORCID: https://orcid.org/0000-0002-0135-0032; Peck, Lloyd S. ORCID: https://orcid.org/0000-0003-3479-6791. 2020 Lipid storage patterns in marine copepods: environmental, ecological. ICES Journal of Marine Science, 77 (5). 1589-1601. https://doi.org/10.1093/icesjms/fsaa070

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This is a pre-copyedited, author-produced version of an article accepted for publication in ICES Journal of Marine Scienes following peer review. The version of record is available online at: https://doi.org/10.1093/icesjms/fsaa070
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Abstract/Summary

Seasonality of food supply is a major driver of physiological and ecological adaptations of marine zooplankton. High-latitude marine copepods accumulate lipids for maintenance and reproductive maturation during the food-depleted winter period. The relationship between latitude and lipid storage in copepods is well established, but it is influenced by many factors, such as trophic position, sex, and depth distribution. In this study, the influence of latitude and collection depth, trophic level, sex, and the presence or absence of dormancy on the relative amount and composition of lipids stored was assessed by analysing published data. Our analyses confirmed higher lipid contents (expressed as % dry weight) in high-latitude species, and in deep-dwelling tropical copepods compared to shallow-living ones. Contrary to our original hypothesis, carnivorous and herbivorous copepods had similar lipid levels. Copepod species that undergo dormancy had higher levels of wax ester and were more common at polar and temperate latitudes. Lastly, adult male and female copepods did not significantly differ in the amount of lipids they store, suggesting that the portion of male reproductive investment, which may depend on lipid stores, has been underestimated. Taken together, these results both confirm some previously reported trends and refute others.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.1093/icesjms/fsaa070
ISSN:	1054-3139
Additional Keywords:	diapause, latitude, lipid content, seasonality, trophic level, vertical migration, zooplankton
Date made live:	05 May 2020 15:47 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/527278

Item Type:

Publication - Article

Digital Object Identifier (DOI):

https://doi.org/10.1093/icesjms/fsaa070

ISSN:

1054-3139

Additional Keywords:

diapause, latitude, lipid content, seasonality, trophic level, vertical migration, zooplankton

Date made live:

05 May 2020 15:47 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/527278