| 词汇 | blackfly |
| 释义 | blackfly noun[ C or U ] uk /ˈblæk.flaɪ/ us /ˈblæk.flaɪ/ a small black insect with two wings that feeds on the juices of plants: （吸食植物汁液的）黑蝇 Do your broad beans suffer from blackfly (= are they attacked by blackfly)?你的蚕豆遭蝇灾了吗？ Will Heap/GettyImages Insect names anopheles ant aphid beastie bedbug dragonfly dust mite earwig earworm elm bark beetle housefly insect jigger ladybird lepidopterist silverfish sow bug spider mite stick insect swallowtail Examples of blackflyblackfly For the oviposition experiments, blackflies were allowed to bloodfeed until fully engorged. Collected blackflies were assigned randomly to each group. The responses observed in blackflies after natural infections are similar to those seen after experimental infections. However, very little is known about the role of blackfly haemocytes and the body of publication is very small. To reduce blackfly activity, dim (less than 50 lux) torchlight was directed up from beneath the chamber as the only illumination. Complete recognition of the term is explained by persistent itching. 64.4 % of the respondents attributed chronic itching to blackfly, while 34.9 % thought nodules to be caused by blackfly bites. Water dripped continuously on to the netting where the blackflies oviposited, and exited to a receptacle. Of the various drip methods tested, groups of gravid blackflies ovipositing together resulted in the highest viable egg yields, with the highest proportion of individuals responding. Microfilariae infest the skin, from where a blackfly vector uptakes parasites to continue transmission. Water management schemes can either encourage or discourage the simuliid (blackfly) vectors of onchocerciasis (river blindness). Adult female blackflies were used for infections within 2 days of their emergence. We are confident that blackflies are an important model for elucidating the role of innate immunity in the context of parasitic infections in invertebrates and vertebrates alike. The data presented above support this finding, as the proportion of forest/transition-zone- and savanna-dwelling blackflies carrying larvae of the two strains were not significantly different. Asterisks indicate the approximate location of the villages from which microfilariae were collected and circles indicate the approximate location of sites from which infected blackflies were collected. 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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