| 词汇 | nectary |
| 释义 | nectary noun[ C ] biology specializeduk /ˈnektəri/ us /ˈnektəri/ the part of a flower that produces nectar蜜腺 Parts of plants axil bark bilobed blade bulb caning cascara sagrada corolla endodermis inflorescence knot pistil rosella seed coat seed pod sessile shaw sting taproot tubule Examples of nectarynectary We displaced the ants from the nectaries by gentle shaking and delicately rubbed earthworms on each nectary to apply mucus. However, after contact with the mucus, the ants retreated and exhibited antennal cleaning, especially when contact with the nectary took place soon after mucus treatment. At the end of the 10 min, only two ants drank at a nectary. Ants, widely regarded as the most important consumers of extrafloral nectar, made up only 60% of all nectary-visiting arthropods. Behavioural observations revealed that many flies actively excluded other arthropods, including ants, from the nectaries or leaves. In general, arthropods from several taxonomic groups appear at extrafloral nectaries, but ants seem to be the most important defenders. During the first 7 min, none of the ants that contacted the nectaries, often visiting each one in turn, drank from them. All ants drinking at nectaries before the treatment, returned to the nectaries after the disturbance. Four different resources might serve as examples: extrafloral nectaries, springtails, termites and ants themselves. The ants feed at extrafloral nectaries of leaves, stipules and flower bracts. The patterns of nectary visitors are therefore considered separately for day and night and for both induction states. Soil and litter ants are mostly scavengers and predators but arboreal ants to a great extent use extrafloral nectaries and honeydew sources. Soya-bean flowers: nectary ultra-structure, nectar guides, and orientation on the flower by foraging honeybees. This effect is mucus-based since once desiccated, the earthworms were consumed by ants, and since ants clearly avoided mucus-treated nectaries, although nectaries are their principal food source. Control observations confirmed that, without mucus treatment, most of the ants returned to the nectaries in a few seconds after leaf disturbance. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
| 随便看 |
反思网英语在线翻译词典收录了377474条英语词汇在线翻译词条，基本涵盖了全部常用英语词汇的中英文双语翻译及用法，是英语学习的有利工具。