词汇 | parasitism |
释义 | parasitism noun[ U ] uk /ˈpær.ə.sɪ.tɪ.zəm/ us /ˈper.ə.sɪ.tɪ.zəm/ the fact of one animal or plant living on or in another animal or plant of a different type and feeding from it: 寄生 No egg parasitism was detected in this study.在本研究中没有发现卵的寄生。 In many cases parasitism has severe and even fatal consequences for the host.在许多情况下,寄生会给宿主带来严重的甚至是致命的后果。 See parasitic The exact rate of parasitism is of great importance in making decisions about whether or when to apply insecticides. Mortality was caused by a variety of factors, including parasitism. All five species of large blue butterflies in Europe engage in this form of parasitism on red ants. Plants & animals - general words animal kingdom anti-parasitic autotroph biota biped epiphytically esculent family fauna flora mammalian migrant natively non-mammalian non-placental ruminant scavenger secondary consumer songster terrestrially parasitism | American Dictionaryparasitism noun[ U ] us/ˈpær·ə·saɪˌt̬ɪz·əm, -ˌsɪˌt̬ɪz·əm/ biology the relationship that exists between parasites Examples of parasitismparasitism Parasitism is reported as low, often with no response to host density and unlikely to have an impact upon the host population. In the present study, both discovery and parasitism efficiency decreased with increasing egg batch density. Levels of natural populations of larval parasitoids were measured by their parasitism rate. No differences were found among the mixed cropping treatments and parasitism was lower during the long compared to the short rainy seasons. A host's ability to counter the negative aspects of parasitism could depend upon a multitude of variables. Post-parasitoid emergence, vacated hosts continued to consume very small quantities of food until their death, at 10-12 days post parasitism. The text is organised into five parts, taking the reader through the sequence of events leading to successful parasitism. Early in the season, cluster parasitism increased continuously over a period of five weeks. Despite this accumulating evidence, it is still difficult to assess just how important parasitism is for community structure for at least two reasons. At the same time, recent research has highlighted the role of parasitism in the dynamics of animal populations and the structure of animal communities. This value is somewhat lower than the average 23% parasitism observed in the field for egg batches of a comparable size (fig. 2). Some of the attacked nymphs died and desiccated during the rearing process and thus could not be dissected for parasitism. Two of the three field studies using markrecapture techniques assessed host mortality and showed that host survival decreased as a consequence of parasitism. The last review of this section concerns social parasitism, in various forms, in ant species. Finally, we put this information together in a discussion of the impact of parasitism at the community level. See all examples of parasitism 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. |
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