Palatability of the Antarctic rhodophyte Palmaria decipiens (Reinsch) RW Ricker and its endo/epiphyte Elachista antarctica Skottsberg to sympatric amphipods

Bucolo, Philip; Amsler, Charles D.; McClintock, James B.; Baker, Bill J.

doi:10.1016/j.jembe.2010.10.023

Cited by 40 publications

(11 citation statements)

References 16 publications

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“…Palmaria decipiens, the third red alga regularly consumed by Paradexamine fissicauda in our assays, is one of the most generally palatable macroalgal species in the community (Amsler et al 2005, 2009b, Aumack et al 2010) and although not all amphipod species consume it as fresh thallus (Aumack et al 2010, Bucolo et al 2011, this is not attributable to chemical defenses (Aumack et al 2010). In nature, Palmaria decipiens supports a far less abundant amphi pod fauna than other, chemically defended species (probably because they are more likely to be consumed by omnivorous fish on P. decipiens; Zamzow et al 2010) and Paradexamine fissicauda was not found on it during 2 surveys (Huang et al 2007, Aumack et al 2011a).…”

Section: Discussionmentioning

confidence: 95%

Tolerance and sequestration of macroalgal chemical defenses by an Antarctic amphipod: a ‘cheater’ among mutualists

Amsler¹,

Amsler²,

Salm³

et al. 2013

Mar. Ecol. Prog. Ser.

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Shallow-water communities along the western Antarctic Peninsula support forests of large, mostly chemically defended macroalgae and dense assemblages of macroalgal-associated amphipods, which are thought to exist together in a community-wide mutualism. The amphipods benefit the chemically defended macrophytes by consuming epiphytic algae and in turn benefit from an associational refuge from fish predation. In the present study, we document an exception to this pattern. The amphipod Paradexamine fissicauda is able to consume Plocamium cartilagineum and Picconiella plumosa, 2 species of sympatric, chemically defended red macroalgae. In previous studies, Plocamium cartilagineum was one of the most strongly deterrent algae in the community to multiple consumers, and was found here to be unpalatable to 5 other amphipod species which utilize it as a host in nature. Paradexamine fissicauda maintained on a diet of Plocamium cartilagineum for 2 mo were much less likely to be eaten by fish than Paradexamine fissicauda maintained on a red alga which does not elaborate chemical defenses, or than a different but morphologically similar sympatric amphipod species. Halogenated secondary metabolites produced by Plocamium cartilagineum were identified from tissues of the Paradexamine fissicauda that had eaten it but not those which had eaten the undefended red alga. This indicates that P. fissicauda is sequestering the potent chemical defenses of Plocamium cartilagineum for its own use.

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Section: Discussionmentioning

confidence: 95%

Tolerance and sequestration of macroalgal chemical defenses by an Antarctic amphipod: a ‘cheater’ among mutualists

Amsler¹,

Amsler²,

Salm³

et al. 2013

Mar. Ecol. Prog. Ser.

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“…However, some of our results disagree with previous findings. For instance, extracts from Palmaria decipiens and Gigartina skottsbergii were rejected by C. femoratus in our assay, but extracts and fresh thalli from these algae have been de scribed as palatable to other amphipods (Amsler et al 2005b, Huang et al 2006, Aumack et al 2010, Bucolo et al 2011.…”

Section: Discussionmentioning

confidence: 99%

Feeding deterrency in Antarctic marine organisms: bioassays with the omnivore amphipod Cheirimedon femoratus

Núñez-Pons¹,

Rodríguez-Arias²,

Gómez‐Garreta³

et al. 2012

Mar. Ecol. Prog. Ser.

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“…110 m) may have different chemistry due to the variation in depths or the extraction protocol, which yielded unexpected inactivity. Other algae, like Palmaria decipiens, are more preferred as food (though not for our amphipod) but are not preferred as hosts (Amsler et al 2005;Aumack et al 2010;Bucolo et al 2011). Analogous chemical refuges have not been described in Antarctic sponges, yet some defended species host dense amphipod populations ).…”

Section: Chemical Defences Towards Antarctic Keystone Predators L Númentioning

confidence: 90%

Deterrent activities in the crude lipophilic fractions of Antarctic benthic organisms: chemical defences against keystone predators

Núñez-Pons

Ávila

2014

Polar Research

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Palatability of the Antarctic rhodophyte Palmaria decipiens (Reinsch) RW Ricker and its endo/epiphyte Elachista antarctica Skottsberg to sympatric amphipods

Cited by 40 publications

References 16 publications

Tolerance and sequestration of macroalgal chemical defenses by an Antarctic amphipod: a ‘cheater’ among mutualists

Tolerance and sequestration of macroalgal chemical defenses by an Antarctic amphipod: a ‘cheater’ among mutualists

Feeding deterrency in Antarctic marine organisms: bioassays with the omnivore amphipod Cheirimedon femoratus

Deterrent activities in the crude lipophilic fractions of Antarctic benthic organisms: chemical defences against keystone predators

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