| 词汇 | example_english_biological-control |
| 释义 | Examples of biological controlThese 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. An effective host-finding capacity is, however, one of the main determinants of successful biologicalcontrol. However, the amount of research pertaining to biologicalcontrol of termites using these agents is negligible. Their correct identification is fundamental for biologicalcontrol purposes. Biologicalcontrol agents have also been applied in the management of cruciferous aphids with some degree of success. Therefore, it is essential that the effects of these control systems on specific biologicalcontrol agents are evaluated. Supplemental food sources are a useful tool for biologicalcontrol since they allow greater survival, and potentially reproduction of predators when food sources are scarce. Thus, it had the highest impact on the pest and may yet show promise for a biologicalcontrol initiative. Generally, the search for a successful biologicalcontrol agent should start in the area of origin of the pest. Actual abundance of beneficial arthropods was a better indicator of biologicalcontrol potential than activity estimates. This experiment examined the potential of three biologicalcontrol agents to limit adult sciarid emergence within unspawned compost, spawned compost and casing. This is the dominant order among entomophagous insects, both numerically and in regard to their successful use in biologicalcontrol. The results of this work also emphasize the importance of understanding the tritrophic interactions of a system when dealing with biologicalcontrol. The implications of the results of this study for biologicalcontrol in ornamental crops are discussed. This requires natural enemies to eliminate sparsely distributed patches of prey, so that prey spatial distribution is very relevant to the success of biologicalcontrol. Such elimination of infestation sources by means of a biologicalcontrol agent might be more economic than by manual labour. Observations on the vertical distribution of the biologicalcontrol agents within substrate profiles, in the absence of prey, may be considered of limited value. Since natural enemies are an important source of mortality, conservation biologicalcontrol is a tactic to be considered. Effective biologicalcontrol of parasitic nematodes consists in the preventive reduction of infective stages on pasture. Biologicalcontrol needs to match two or more life cycles. Biological parameters that would improve rearing and field-release protocols and permit comparisons to other olive fruit fly biologicalcontrol agents were measured. Finally, understanding the mechanisms of naturally occurring, specific resistances against parasitoid wasps, widely used in biologicalcontrol, is of high agronomic interest. The lack of early or mid-season insecticide stress in organic cotton may have favored naturally occurring biologicalcontrol of cotton aphid16. Advances in biologicalcontrol of fungal leaf pathogens through fermented organic substrates and microorganisms. Integrated and biologicalcontrol of parasites in organic and conventional production systems. Management programmes have focused on integration of silvicultural practices, host plant resistance and biologicalcontrol. A sense of proportion concerning the beneficial and detrimental potential of individual biologicalcontrol programmes needs to be transmitted to the public at every opportunity. Using field data, we then show why such estimates are essential to provide an accurate assessment of their importance as agents of biologicalcontrol. The limited number of invertebrate pest species associated with mushroom cultivation increases the potential for adoption of a biologicalcontrol strategy within this industry. The book considers the history of agriculture, types of biologicalcontrol, current thoughts, practices and approaches to control, and opportunities and challenges for the future. The prospects and associated challenges for the biologicalcontrol of rodents. The role of biologicalcontrol methods and herbicides cannot be under-estimated. However, an observed trend indicated lower adult sciarid emergence from casing substrate, which received biologicalcontrol agents when compared with controls (fig. 3). The study indicated that biologicalcontrol of house flies can be an efficient alternative to chemical control. It would be foolish to assume that this is solely the effect of biologicalcontrol influences. The implications of these results for the tritrophic interactions between plant, predator and prey, and the development of suitable biologicalcontrol strategies are discussed. One of the key areas targeted was biologicalcontrol. This suggests that area-wide control of the pest may only be achieved by a biologicalcontrol agent. Biologicalcontrol may yet come to supplement, but is unlikely any time soon to supplant, other established subterranean termite control technologies. We are therefore now devoting all our efforts to biologicalcontrol. Therefore, biologicalcontrol mechanisms that monitor and control behavioral responses may be especially important in a social context. Therefore, the susceptibility hypothesis implies that this species may be highly successful as a biologicalcontrol agent. Perhaps the use of behaviour-modifying chemicals and host-plant resistance is also appropriate because of their usual compatibility with natural biologicalcontrol. Intramolluscan intertrematode antagonism : a review of factors influencing the host-parasite system and its possible role in biologicalcontrol. However, a major obstacle to the commercial development of these nematode parasites as biologicalcontrol agents is their apparent specificity and host-range. Clearly, the quadrat and pitfall sampling methods captured different components of the biologicalcontrol community. The potential use of plants for the biologicalcontrol of snails transmitting parasitic infections has recently received considerable attention. Younger growers also felt the cost of biologicalcontrol products, reduced risk products, and consulting fees were not important factors. It will be a welcome addition to a timely series on the biologicalcontrol of pests and weeds. In addition, the resident position for each biologicalcontrol agent, in the absence of invertebrate pests, may be established. The concept of biologicalcontrol is not only appropriate to countries which have achieved maintenance control status but also wherever transmission is hypoendemic. A biologicalcontrol research programme has been implemented in an effort to provide a solution to this newly introduced pest problem. This is a particularly desirable characteristic of a biologicalcontrol agent. However, little information is available on parasitoids of termites, and none of it seems to have relevance to biologicalcontrol. One way of managing diamondback moth is through biologicalcontrol using parasitoids. The biological characters of these species can now be investigated with respect to their potential as biologicalcontrol agents. The potential for use of these parasitoids in biologicalcontrol is also discussed. There is little evidence that this species is a primary biologicalcontrol agent in this system. Therefore, determination of the relative effectiveness of the biologicalcontrol agents within this substrate was inconclusive. The prey consumption ability of a predator within a plant is just one aspect that needs to be considered when developing biologicalcontrol strategies. There was evidence of a beneficial interaction between the degree of plant resistance and biologicalcontrol in early to mid season. The significance of these results for the use of supplemental food sources in biologicalcontrol is discussed. Particular attention is paid to biologicalcontrol methods and plant and host resistance, and the advantages and problems associated with their use. Few chemicals are currently available to control this fly, pointing to biologicalcontrol as a promising alternative. The ability of the predator to locate and eradicate sparsely distributed prey patches is the cornerstone of preventative biologicalcontrol. As introduced exotic pests, the invading aphids are particularly suitable as targets for classical biologicalcontrol. We therefore expect that this biologicalcontrol project will rank as a very highly successful one when the final economic impact assessment is concluded. The categories used were: host plant; wood material; stored products; biologicalcontrol agents; host animal; others; and multiple/unknown. It is structurally accurate, in that the design of the robotic model is a straightforward mapping from proposed biologicalcontrol heuristics. Especially in medically relevant blood flukes snail compatibility is also a topic of practical importance for epidemiological surveys and development of biologicalcontrol methods. Biologicalcontrol of gastro-intestinal parasites of ruminants using predacious fungi. Ideally, in addition to chemical treatments, biologicalcontrol measures with no unfavourable effects on the environment should be incorporated into the control strategy. Trematodes : antagonism between species and sterilizing effects on snails in biologicalcontrol. The low cost and minimal maintenance involved in mounting a biologicalcontrol programme, however, would seem a justifiable investment against the possibility of recrudescence. Biologicalcontrol of intermediate hosts offers a low cost and low maintenance alternative to traditional maintenance control by mollusciciding. However, further experiments are needed to test the effect of the fungi when biologicalcontrol is integrated into different parasite control strategies. Egg-parasitic fungi are one of the potent candidates for biologicalcontrol. Similarly, the chapter on low-level control is preceded by a chapter on biologicalcontrol mechanisms. Biologicalcontrol as a means of enhancing the sustainability of crop/land management systems. Farm management and biologicalcontrol them in the greenhouse and identifying the plant by morphology. The patterns in the abundances of biologicalcontrol agents may be explained by habitat stability within the different cropping systems. In contrast, biologicalcontrol efforts directed towards controlling one pest may have no impact on other pest species. The presence of pests and beneficial agents belonging to the same subfamily adds one level of complexity to the work of biologicalcontrol practitioners. Identifying micro-organisms which fill a niche similar to that of the pathogen: a new investigative approach for discovering biologicalcontrol organisms. The biologicalcontrol of insect pests provides a simple yet representative area of biological modelling for comparing alternative views of generality. This result seems in favour of biologicalcontrol applications, suggesting that parasitism is probably not influenced by the grape cultivars surveyed in this study. Minimizing damage to leaves at key points in the year could allow biologicalcontrol to be more effectively integrated with chemical control. Critical to the success of finding effective agents for biologicalcontrol is determination of the historical range of the mite. However, a clear link between these biochemical differences and the parasitoid's biology and efficacy as a biologicalcontrol agent is yet to be established. The mechanism of parasitoid-induced immunosuppression is a factor which could be taken into account in assessing the potential host range of candidate biologicalcontrol agents. To ensure the success of a biologicalcontrol programme, quality control of natural enemies is important. It is the endoparasitic fungi, however, that have perhaps the greater potential for biologicalcontrol of termites, and these have received more attention by researchers. Under each part, authored chapters are presented on the biologicalcontrol history of the pest. The opportunities for biologicalcontrol are explored and the prospects are encouraging. The implications of these findings for biologicalcontrol and predator-prey dynamics are discussed. Success in the longer run thus depends largely on the permanent establishment of an exotic biologicalcontrol agent in a new area. However, continued biologicalcontrol efforts must consider the competitive risks of any newly introduced parasitoids to extant species. Classical biologicalcontrol is being reconsidered with the aim to reduce pesticide use. 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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