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Fatty acid trophic transfer of Antarctic algae to a sympatric amphipod consumer

Published online by Cambridge University Press:  22 October 2019

Julie B. Schram Open the ORCID record for Julie B. Schram [Opens in a new window] ,
Margaret O. Amsler ,
Aaron W.E. Galloway ,
Charles D. Amsler Open the ORCID record for Charles D. Amsler [Opens in a new window]  and
James B. McClintock
Julie B. Schram*
Affiliation:
Oregon Institute of Marine Biology, University of Oregon, Charleston, OR 97420, USA
Margaret O. Amsler
Affiliation:
Department of Biology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
Aaron W.E. Galloway
Affiliation:
Oregon Institute of Marine Biology, University of Oregon, Charleston, OR 97420, USA
Charles D. Amsler
Affiliation:
Department of Biology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
James B. McClintock
Affiliation:
Department of Biology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
*
[email protected]
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Extract

The shallow benthos along the western Antarctic Peninsula supports brown macroalgal forests with dense amphipod assemblages, commonly including Gondogeneia antarctica (Amsler et al. 2014). Gondogeneia antarctica and most other amphipods are chemically deterred from consuming the macroalgae (Amsler et al. 2014). They primarily consume diatoms, other microalgae, filamentous macroalgae and a few undefended macroalgal species, including Palmaria decipiens (Aumack et al. 2017). Although unpalatable when alive, G. antarctica and other amphipods will consume the chemically defended brown algae Himantothallus grandifolius and Desmarestia anceps within a few weeks of death (Amsler et al. 2014).

Type
Short Note
Information
Antarctic Science , Volume 31 , Issue 6 , December 2019 , pp. 315 - 316
Copyright
Copyright © Antarctic Science Ltd 2019 

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References

Amsler, C.D., McClintock, J.B. & Baker, B.J. 2014. Chemical mediation of mutualistic interactions between macroalgae and mesograzers structure unique coastal communities along the western Antarctic Peninsula. Journal of Phycology, 50, 1–10.Google Scholar
Aumack, C.F., Lowe, A.T., Amsler, C.D., Amsler, M.O., McClintock, J.B. & Baker, B.J. 2017. Gut content, fatty acid, and stable isotope analyses reveal dietary sources of macroalgal-associated amphipods along the western Antarctic Peninsula. Polar Biology, 40, 1371–1384.Google Scholar
Galloway, A.W.E., Eisenlord, M.E., Dethier, M.N., Holtgrieve, G.W. & Brett, M.T. 2014. Quantitative estimates of isopod resource utilization using a Bayesian fatty acid mixing model. Marine Ecology Progress Series, 507, 219–232.Google Scholar
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Supplementary material: PDF

Schram et al. supplementary material

Schram et al. supplementary material

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