期刊
JOURNAL OF CHEMICAL ECOLOGY
卷 30, 期 6, 页码 1285-1288出版社
KLUWER ACADEMIC/PLENUM PUBL
DOI: 10.1023/B:JOEC.0000030298.77377.7d
关键词
Manduca sexta; Datura wrightii; CO2; labial-palp pit organ; insect-plant interactions; foraging
The hawkmoth Manduca sexta (Lepidoptera: Sphingidae), an experimentally favorable Lepidopteran that is highly sensitive to carbon dioxide (CO2), feeds on the nectar of a range of flowering plants, such as Datura wrightii (Solanaceae). Newly opened Datura flowers give off dramatically elevated levels of CO2 and offer ample nectar. Thus, floral CO2 emission could indicate food-source profitability. This study documents that foraging Manduca moths prefer surrogate flowers that emit high levels of CO2, characteristic of newly opened Datura flowers. We show for the first time that CO2 may play an important role in the foraging behavior of nectar-feeding insects.
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