In field experiments manipulating generalist pathogens and host community composition, the presence of a highly susceptible reservoir species drove disease dynamics in multiple nonreservoir species, sometimes decreasing their abundance through apparent competition. The dynamics of generalist pathogens in multispecies host communities remain a major frontier for disease ecology. Of particular in...

One commonly accepted mechanism for biological invasions is that species, after introduction to a new region, leave behind their natural enemies and therefore increase in distribution and abundance. However, which enemies are escaped remains unclear. Escape from specialist invertebrate herbivores has been examined in detail, but despite the profound effects of generalist herbivores in natural c...

Most Salmonella serovars are general pathogens that infect a variety of hosts. These "generalist" serovars cause disease in many animals from reptiles to mammals. In contrast, a few serovars cause disease only in a specific host. Host-specific serovars can cause a systemic, often fatal disease in one species yet remain avirulent in other species. Host-specific Salmonella frequently have large g...

This study examines nonelderly women's concurrent use of two types of physicians (generalists and obstetrician-gynecologists) for regular health care and associations with receipt of preventive care, including a range of recommended screening, counseling, and heart disease prevention services. Data are from the 1999 Women's Health Care Experiences Survey conducted in Baltimore, Maryland, using ...

Populations of Eruca sativa (Brassicaceae) from desert and Mediterranean (Med) habitats in Israel differ in their defense against larvae of the generalist Spodoptera littoralis but not the specialist Pieris brassicae. Larvae of the generalist insect feeding on plants of the Med population gained significantly less weight than those feeding on the desert plants, and exogenous application of meth...

The shape of performance curves and their plasticity define how individuals and populations respond to environmental variability. In theory, maximum performance decreases with an increase in performance breadth. However, reversible acclimation may counteract this generalist-specialist trade-off, because performance optima track environmental conditions so that there is no benefit of generalist ...

principlism, in general and four principles approach in particular is largely discussed in current medical ethics. accord­ing to principlism, the ethical relationship between physician and patient has to be categorized based on some princi­ples, the prin­ciples which are general, action-guiding and could help both the patient and the physician to arrange their ethical behav­ior. four principles...

1 It is over 50 years since Lord Moran suggested that GPs were doctors who have fallen off the specialist ladder. 2 Then, two-thirds of early career GPs would have preferred to have been specialists. 2 Today Lord Moran's ladder lives on. General practice is still not a first career choice for many graduates, certainly not enough to sustain the workforce we need. 3 Our conversations with early c...

A better understand the ecology of microbes and their role in the global ecosystem could be achieved if traditional ecological theories can be applied to microbes. In ecology organisms are defined as specialists or generalists according to the breadth of their niche. Spatial distribution is often used as a proxy measure of niche breadth; generalists have broad niches and a wide spatial distribu...