منابع مشابه
Nestedness of Ectoparasite-Vertebrate Host Networks
Determining the structure of ectoparasite-host networks will enable disease ecologists to better understand and predict the spread of vector-borne diseases. If these networks have consistent properties, then studying the structure of well-understood networks could lead to extrapolation of these properties to others, including those that support emerging pathogens. Borrowing a quantitative measu...
متن کاملEffects of host sociality on ectoparasite population biology.
Theory predicts a positive relationship between parasite infection intensity and host density. However, this generalization is complicated in natural systems by differences in life history among parasite taxa, e.g., transmissibility. Accordingly, predictions relating host density to parasite load should be specific to each parasite taxon. To illustrate this, we studied parasites that differed g...
متن کاملImpact of an ectoparasite on the immunity and pathology of an invertebrate: evidence for host immunosuppression and viral amplification.
Varroa mites (Varroa destructor) are ectoparasites of honey bees (Apis mellifera) and cause serious damage to bee colonies. The mechanism of how varroa mites kill honey bees remains unclear. We have addressed the effects of the mites on bee immunity and the replication of a picorna-like virus, the deformed wing virus (DWV). The expression of genes encoding three antimicrobial peptides (abaecin,...
متن کاملAn Appraisal of Sustainable Urban Transportation: Application of a System Dynamics Model
Increasing pressures caused by negative consequences of transportation and traffic problems in major cities, have resulted many attempts towards improvement of planning and management of transportation systems, according to sustainability objectives. In this paper, a comprehensive model is developed using a system dynamics approach to evaluate sustainable urban transportation. This model includ...
متن کاملHealth System Financial Supply Chain Management with System Dynamics Approach: An Integrated Review
Introduction: Financing, creating resources, delivering services, and stewardship are the four main tasks of the health system, and achieving these goals is the main indicator of an efficient and fair health system. The present study was conducted to investigate the model of the management of the financing chain of the health system with the approach of system dynamics. Methods: In this integra...
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ژورنال
عنوان ژورنال: Acta Theriologica
سال: 1983
ISSN: 0001-7051,2190-3743
DOI: 10.4098/at.arch.83-51