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Over the last decade, unusually high losses of colonies have been reported by beekeepers across the USA. Multiple factors such as Varroa destructor, bee viruses, Nosema ceranae, weather, beekeeping practices, nutrition, and pesticides have been shown to contribute to colony losses. Here we describe a large-scale controlled trial, in which different bee pathogens, bee population, and weather conditions across winter were monitored at three locations across the USA. In order to minimize influence of various known contributing factors and their interaction, the hives in the study were not treated with antibiotics or miticides. Additionally, the hives were kept at one location and were not exposed to potential stress factors associated with migration. Our results show that a linear association between load of viruses (DWV or IAPV) in Varroa and bees is present at high Varroa infestation levels (>3 mites per 100 bees). The collection of comprehensive data allowed us to draw a predictive model of colony losses and to show that Varroa destructor, along with bee viruses, mainly DWV replication, contributes to approximately 70% of colony losses. This correlation further supports the claim that insufficient control of the virus-vectoring Varroa mite would result in increased hive loss. The predictive model also indicates that a single factor may not be sufficient to trigger colony losses, whereas a combination of stressors appears to impact hive health.

The present paper examines the relationship between the development of moral behavior and the development of verbal regulatory processes. Relational frame theory and the distinctions among pliance, tracking, and augmenting forms of rule governance are applied to the domain of moral behavior and its development, in order to identify the specific social and verbal contingencies that are responsible for an evolving moral repertoire. It is argued that moral behavior is controlled by relational and rule-following repertoires, and that these can be arranged into a rough progression: pliance, tracking, augmenting, social concern for pliance, social concern for tracking, and social concern for augmenting. Congruence with data derived from other research traditions is examined, and applied implications are explored.

Objectives: The aim of this study was to examine the US and Canadian systems from the unique perspective of physicians who have practiced in both Canada and the United States., Methods: Questionnaires were sent to 355 Canadian physicians who graduated from US medical schools and 347 US physicians who graduated from Canadian medical schools., Results: The overall response rate was 59% (65% of US-graduated Canadian physicians and 54% of Canadian-graduated US physicians). Thirty-six percent of the respondents were "dual experience" physicians; that is, they had practiced medicine in both countries after completing their medical training. Physicians who left Canada were more likely than those who left the United States to indicate dissatisfaction with the health care system as a reason for leaving. Respondents expressed greater professional satisfaction with their current country of practice, but overall, dual-experience physicians in the United States favored that system only slightly more than the Canadian system, whereas those in Canada rated the Canadian system significantly better than the US system., Conclusions: The comparatively weak rating of the US system by dual-experience physicians underlines the need for health care reform.

Small rural health departments of necessity rely on expertise from outside their departments and often from outside their jurisdictions. Such assistance does not negate the need for active involvement on the part of local staff. Creative solutions can almost always be found to confront this need. The experiences of Alpine County, a small rural California county, provide a case in point.