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Differential susceptibility to Eucalyptus secondary compounds explains feeding by the common ringtail (Pseudocheirus peregrinus) and common brushtail possum (Trichosurus vulpecula)

Ford (previously Marsh), Karen; Foley, William; Cowling, Ann; Wallis, Ian

Description

The effect of two plant secondary metabolites, tannins and formylated phloroglucinol compounds (FPCs), on the intake of Eucalyptus foliage by common ringtail (Pseudocheirus peregrinus) and common brushtail possums (Trichosurus vulpecula) was studied. We manipulated the amount of tannin that was free to bind with protein by coating foliage with polyethylene glycol 4000 (PEG) and relied on natural intraspecific variation in FPC concentrations. In contrast to ringtail possums, brushtail possums...[Show more]

dc.contributor.authorFord (previously Marsh), Karen
dc.contributor.authorFoley, William
dc.contributor.authorCowling, Ann
dc.contributor.authorWallis, Ian
dc.date.accessioned2015-12-13T22:19:45Z
dc.identifier.issn0174-1578
dc.identifier.urihttp://hdl.handle.net/1885/71981
dc.description.abstractThe effect of two plant secondary metabolites, tannins and formylated phloroglucinol compounds (FPCs), on the intake of Eucalyptus foliage by common ringtail (Pseudocheirus peregrinus) and common brushtail possums (Trichosurus vulpecula) was studied. We manipulated the amount of tannin that was free to bind with protein by coating foliage with polyethylene glycol 4000 (PEG) and relied on natural intraspecific variation in FPC concentrations. In contrast to ringtail possums, brushtail possums showed a greater tolerance to FPCs and ate more foliage when it was coated with PEG, suggesting that tannins limited their food intake. Brushtails detected the effects of tannins through immediate oral sensations rather than through systemic effects. Ringtail possums appeared highly tolerant of foliar tannins yet susceptible to low concentrations of FPCs. We could not detect any interaction between tannins and FPCs that affected the intake of Eucalyptus foliage by either species of possum. Although ringtail and brushtail possums are widely regarded as specialist and generalist folivores, respectively, their differential susceptibility to co-occurring secondary metabolites suggests greater complexity. Each possum species appears to be a specialist in its own right, which leads to a partitioning of available foliage. Brushtails avoid tannins and ringtails avoid FPCs.
dc.publisherSpringer
dc.sourceJournal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology
dc.source.urihttp://www.springerlink.com/media/78u409g6yh0rykagnt2l/Contributions/A/M/X/D/AMXD6YAAWJP6TTFC.pdf
dc.subjectKeywords: benzofuran derivative; drug derivative; macrogol derivative; nitrogen; phloroglucinol; sideroxylonal C; tannin derivative; animal; animal food; article; chemistry; comparative study; Eucalyptus; feeding behavior; female; male; opossum; physiology; plant l Folivore; FPC; Sideroxylonal; Specialist; Tannins
dc.titleDifferential susceptibility to Eucalyptus secondary compounds explains feeding by the common ringtail (Pseudocheirus peregrinus) and common brushtail possum (Trichosurus vulpecula)
dc.typeJournal article
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.citationvolume173
dc.date.issued2003
local.identifier.absfor060301 - Animal Systematics and Taxonomy
local.identifier.ariespublicationMigratedxPub2987
local.type.statusPublished Version
local.contributor.affiliationFord (previously Marsh), Karen, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationFoley, William, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationCowling, Ann, Administrative Division, ANU
local.contributor.affiliationWallis, Ian, College of Medicine, Biology and Environment, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.issue1
local.bibliographicCitation.startpage69
local.bibliographicCitation.lastpage78
dc.date.updated2015-12-11T07:50:10Z
local.identifier.scopusID2-s2.0-0037790552
CollectionsANU Research Publications

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