A nutrition–defence trade-off drives diet choice in a toxic plant generalist
A nutrition–defence trade-off drives diet choice in a toxic plant generalist
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营养与防御的权衡推动了有毒植物多面手的饮食选择
DOI:
10.1098/rspb.2023.0987
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Agrawal, Anurag A.
中科院分区:
文献类型:
--
作者:
Carlson, Nathaniel J.;Agrawal, Anurag A.
Plant toxicity shapes the dietary choices of herbivores. Especially when herbivores sequester plant toxins, they may experience a trade-off between gaining protection from natural enemies and avoiding toxicity. The availability of toxins for sequestration may additionally trade off with the nutritional quality of a potential food source for sequestering herbivores. We hypothesized that diet mixing might allow a sequestering herbivore to balance nutrition and defence (via sequestration of plant toxins). Accordingly, here we address diet mixing and sequestration of large milkweed bugs (Oncopeltus fasciatus) when they have differential access to toxins (cardenolides) in their diet. In the absence of toxins from a preferred food (milkweed seeds), large milkweed bugs fed on nutritionally adequate non-toxic seeds, but supplemented their diet by feeding on nutritionally poor, but cardenolide-rich milkweed leaf and stem tissues. This dietary shift corresponded to reduced insect growth but facilitated sequestration of defensive toxins. Plant production of cardenolides was also substantially induced by bug feeding on leaf and stem tissues, perhaps benefitting this cardenolide-resistant herbivore. Thus, sequestration appears to drive diet mixing in this toxic plant generalist, even at the cost of feeding on nutritionally poor plant tissue.
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DOI:
10.1086/719196
发表时间:
2022
期刊:
The American Naturalist
影响因子:
--
作者:
Georg Petschenka;R. Halitschke;Tobias Züst;A. Roth;Sabrina Stiehler;L. Tenbusch;Christoph Hartwig;Juan Francisco Moreno Gámez;R. Trusch;Jürgen Deckert;Kateřina Chalušová;A. Vilcinskas;Alice Exnerová
通讯作者:
Alice Exnerová
DOI:
--
发表时间:
1958
期刊:
影响因子:
--
作者:
Stanley D. Beck;C. A. Edwards;J. Medler
通讯作者:
J. Medler
DOI:
--
发表时间:
1976
期刊:
影响因子:
--
作者:
R. B. Root;S. Chaplin
通讯作者:
S. Chaplin
影响因子:
0.6
作者:
BERENBAUM, MR;MILICZKY, E
通讯作者:
MILICZKY, E
影响因子:
2.2
作者:
DUFFEY, SS;SCUDDER, GGE
通讯作者:
SCUDDER, GGE