Non-Invasive Corticosterone Treatment Changes Foraging Intensity in Red-Eyed Vireos Vireo olivaceus
Non-Invasive Corticosterone Treatment Changes Foraging Intensity in Red-Eyed Vireos Vireo olivaceus
复制标题
非侵入性皮质酮治疗改变了红眼病毒 Vireo olivaceus 的觅食强度
DOI：
--
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
F. Moore
中科院分区：
文献类型：
--
作者：
M. Lõhmus;L. Sundstrom;F. Moore
皮质酮被认为在食物贮藏和觅食行为中起重要作用。然而，血浆皮质酮增加对摄食行为的直接影响尚不清楚。在这项研究中，增加皮质酮的影响，在迁移活动的红眼绿鹃Vireo olivaceus的摄食行为进行了研究。我们假设，如果增加皮质酮水平促进觅食行为，皮质酮治疗的鸟类会看到更多的访问食物碗。除了在实验期间随意进食外，在09.00-13.00 h之间每隔一整小时用一条粉虫注射溶于20 μl DMSO中的4 μg皮质酮或仅用DMSO作为对照处理来喂食病毒。在09.00-15.00 h之间，通过运动检测器记录食盆中是否存在鸟。非侵入性皮质酮治疗增加了血浆皮质酮水平，并导致病毒在11.00-12.00 h和13.00-15.00 h之间与对照治疗个体相比更频繁地访问食物碗。我们的数据表明，皮质酮对鸟类的摄食行为有影响。
Corticosterone is thought to play an important role in food caching and foraging behaviour. However, the direct influence of increased plasma corticosterone on feeding behaviour is still unclear. In this study the effect of increased corticosterone on feeding behaviour in migratory active red-eyed vireos Vireo olivaceus was investigated. We hypothesized that if increased corticosterone levels facilitate foraging behaviour, an increased number of visits to the food bowl by corticosterone treated birds would be seen. In addition to ad lib food during the experiment, the vireos were fed every full hour between 09.00–13.00 h with one meal worm injected either with 4 μg corticosterone dissolved in 20 μl DMSO, or with DMSO only as a control treatment. The presence or absence of a bird in the food bowl was recorded by a motion detector between 09.00–15.00 h. The non-invasive corticosterone treatment increased plasma corticosterone levels and caused vireos to visit the food bowl more frequently compared to control treated individuals between 11.00–12.00 h and 13.00–15.00 h. Our data indicate that corticosterone has an effect on feeding behaviour in birds.
DOI：
--
发表时间：
1989
期刊：
Acta physiologica Scandinavica. Supplementum
影响因子：
--
作者：
M. Dallman;D. Darlington;S. Suemaru;C. S. Cascio;N. Levin
通讯作者：
M. Dallman;D. Darlington;S. Suemaru;C. S. Cascio;N. Levin