词汇 | example_english_eel |
释义 | Examples of eelThese 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. Examination of eels on day 112 revealed no indication for acquired immunity resulting from the primary infection. A suite of three digenean eel specialist species occurred in all three lagoons, of which any two members dominated each community. Movements of eels of this nature would also explain the differences in parasite dispersion patterns evident in the same month. The eels of each species were divided into four groups, each containing approximately 25 specimens and acclimated for two weeks prior to the experimentation. The general trend was for increasing damage as eel size increased, thus suggesting accumulation of pathological effects. Introduced monogeneans are pests in the eel trade. The mean number of species per eel ranged from 0.7 to 1.7 per eel, and the maximum never exceeded three. The cortisol levels of the control eels which were not inoculated with larvae did not show any significant change over the experimental period. For experimental infections eels were transferred individually to experimental tanks. All analyses were carried out on the entire sample of eels, as individual samples were too small to be sub-divided by eel length. They are not known to act as intermediate hosts for any of the acanthocephalans found in the eels. In the present study, a significant correlation was found between parasite infection and body length of eels. Interestingly, these authors also noted that the proportion of eels with damaged swimbladders thereafter decreased. After a six-week exposure, eels were transferred to clean water for 2 days to avoid contamination while sampling. Abundance refers to component population size, calculated as the total number of parasites per species, per sample of eels. Do eel parasites reflect the local crustacean community? The principal study objective was to test the saturation hypothesis in eels. Nevertheless, data on larval survival required confirmation, as did the failure of attempts to infect invertebrates and eels directly. The blood of all eels was hyper-osmotic to freshwater and hypo-osmotic to seawater. The general trend is for increasing damage as the eel size rises. Data on intestinal helminths of the eel population will be presented in a separate paper. From 1994 to 2001, 720 eels were collected from two sites in the lake. The remains of eel erythrocytes can be seen in the lumen (l). The number of eels in each class is indicated above the bars. 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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