Abstract:
:The common brushtail possum (Trichosurus vulpecula) is a generalist herbivore whose diet includes Eucalyptus leaves that are well defended by plant secondary metabolites (PSM) such as the terpene 1,8-cineole (cineole). We accustomed possums to a terpene-free diet, then challenged them with the addition of 2% cineole to the diet. Initially, there was a 50% reduction in total overnight food consumption associated with a marked decrease in the mass of the major feeding bout. After nine nights, however, cineole tolerance had developed as total food consumption had returned to the control amount. Compared to the control diet, the cineole diet was eaten in a larger number of smaller bouts, which were also eaten at a slower rate. The experiment was repeated with animals that had been accustomed to day-time feeding to take blood samples during feeding sessions. Feeding variables and blood concentration data for cineole were compared on the first and seventh day of the cineole diet. Although the total food consumed increased 2.5-fold after 7 days of the cineole diet, there was no increase in average blood cineole concentration, measured as the area under the concentration-time curve. This indicates that induction of liver enzymes resulted in greater pre-systemic metabolism of cineole and reduced bioavailability. The maximum tolerated blood concentration of cineole also increased, suggesting some adaptation of the central nervous system to the cineole aversive effects. This appears to be the first report in a vertebrate herbivore that consumption of a dietary PSM leads to metabolism induction and that this contributes to development of tolerance to the PSM. Overall, herbivores adapt to newly encountered dietary PSMs by immediate changes in feeding behavior followed by development of increased metabolism of PSM and probably diminished cellular responsiveness to effects.
journal_name
J Chem Ecoljournal_title
Journal of chemical ecologyauthors
McLean S,Brandon S,Boyle RR,Wiggins NLdoi
10.1007/s10886-008-9463-xsubject
Has Abstractpub_date
2008-05-01 00:00:00pages
672-80issue
5eissn
0098-0331issn
1573-1561journal_volume
34pub_type
杂志文章abstract::Certain insect species can induce gall formation on numerous plants species. Although the mechanism of gall development is largely unknown, it is clear that insects manipulate their hosts' anatomy, physiology, and chemistry for their own benefit. It is well known that insect-induced galls often contain vast amounts of...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/s10886-016-0817-5
更新日期:2017-02-01 00:00:00
abstract::The insect integument is covered by cuticular hydrocarbons (CHCs) which provide protection against environmental stresses, but are also used for communication. Here we review current knowledge on environmental and insect-internal factors which shape phenotypic plasticity of solitary living insects, especially herbivor...
journal_title:Journal of chemical ecology
pub_type: 杂志文章,评审
doi:10.1007/s10886-018-0934-4
更新日期:2018-03-01 00:00:00
abstract::Cuticular hydrocarbons play a significant role in the regulation of cuticular permeability and also in the chemical communication of insects. In the parasitoid Lariophagus distinguendus (Hymenoptera: Pteromalidae), male courtship behavior is mediated by a female-produced sex pheromone. Previous studies have shown that...
journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/s10886-007-9265-6
更新日期:2007-04-01 00:00:00
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journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF02035149
更新日期:1995-10-01 00:00:00
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journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/s10886-005-2035-4
更新日期:2005-03-01 00:00:00
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journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF02033667
更新日期:1995-11-01 00:00:00
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journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF02027777
更新日期:1989-01-01 00:00:00
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journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1023/a:1012242904220
更新日期:2001-10-01 00:00:00
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pub_type: 杂志文章
doi:10.1007/BF00993701
更新日期:1993-02-01 00:00:00
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pub_type: 杂志文章
doi:10.1007/BF01012203
更新日期:1985-11-01 00:00:00
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pub_type: 杂志文章
doi:10.1007/s10886-010-9799-x
更新日期:2010-06-01 00:00:00
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journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF01020154
更新日期:1987-04-01 00:00:00
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journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/s10886-019-01098-w
更新日期:2019-09-01 00:00:00
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journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00987358
更新日期:1984-12-01 00:00:00
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pub_type: 杂志文章
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更新日期:2009-10-01 00:00:00
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journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/s10886-006-9183-z
更新日期:2006-12-01 00:00:00
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journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF00997162
更新日期:1992-01-01 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 临床试验,杂志文章
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更新日期:2010-03-01 00:00:00
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journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF02033677
更新日期:1995-11-01 00:00:00
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pub_type: 杂志文章
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更新日期:2015-08-01 00:00:00
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pub_type: 杂志文章
doi:10.1023/a:1021009618298
更新日期:2002-11-01 00:00:00
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pub_type: 杂志文章
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更新日期:2008-06-01 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:2010-11-01 00:00:00
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pub_type: 杂志文章
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更新日期:1982-12-01 00:00:00
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pub_type: 杂志文章
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更新日期:1987-04-01 00:00:00
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journal_title:Journal of chemical ecology
pub_type: 杂志文章
doi:10.1007/BF02033196
更新日期:1994-09-01 00:00:00