Populations of several species of gregarine parasites within a single host species, the damselfly Ischnura verticalis , were examined over the course of 1 season at 4 geographic localities separated by a maximum distance of 9.7 km. Gregarines, having a life cycle with both exogenous and endogenous stages, are subject to a wide variety of selective pressures that may drive adaptation. Gregarine ...

BACKGROUND Much attention has focused on variations in therapeutic strategies across catchment areas and the related question of whether the differences in attitudes are due to socio-economic variables in the studied population or to physician uncertainty about making a specific therapeutic recommendation. SUBJECTS AND METHOD We monitored the emergency admission rate for patients with alcohol...

Six Iranian populations have been analyzed for finger patterns, utilizing bilateral prints of 720 individuals. Bimanual and sex differences were frequently insignificant and non-significant. Interpopulational variation showed significant hetererogeneity among the populations studied. Distance analysis and constructed dendrograms, based on these six populations and other thirteen Iranian populat...

In studying human health and well-being, biological anthropologists diff er from most biomedical scientists in that we draw explicitly on both evolutionary and biocultural models (Stinson et al. 2000). As anthropologists we are interested in understanding the origin and nature of biological variation as well as the proximate social, political, and economic determinants of variation in human hea...

Indonesia still faces several challenges in the areas of water, sanitation, and hygiene (WASH). Diarrhea remains a major killer of children and it is important to understand the local diarrhea transmission pathways to prioritise appropriate WASH interventions to reduce diarrhea burden. This study used a cross-sectional data set from a recent national household survey (the 2012 Indonesia Demogra...

The use of personal response devices (or ‘‘clickers’’) in the classroom has increased in recent years. While few quantitative studies on the effectiveness of clickers have been published, it is generally reported that clickers have been well-received by the students who use them. Two separate populations (Winter 2006 and Spring 2006) of engineering students were given clickers to use during a g...

OBJECTIVES We investigate the association between an extensive set of location-specific factors and the propensity of retirement-age individuals to remain in, or relocate to, those locations. In particular we investigate whether state and local fiscal factors influence the migration decisions of retirees, and we study the relative importance of fiscal and other factors in these decisions. MET...

Measuring the intensity of sexual selection is of fundamental importance to the study of sexual dimorphism, population dynamics, and speciation. Several indices, pools of individuals, and fitness proxies are used in the literature, yet their relative performances are strongly debated. Using 12 independent common lizard populations, we manipulated the adult sex ratio, a potentially important det...

Abstract. Since the 1970s, in-migration has driven swelling human presence and dramatic physical landscape changes in the Northern Ecuadorian Amazon frontier. Particularly in recent years, population growth and redistribution has engendered important consequences on deforestation and on the incipient, but increasing, urbanization in the frontier. This paper uses longitudinal and multi-scale dat...

Among the myriad political issues that are of concern to ESA, three stand out as not only important in their own right, but together take on a particular urgency. These are (1) environmental justice, (2) globalization, and (3) tropical conservation. The environmental justice movement has focused on the urgent contemporary task of documenting and struggling against political and economic decisio...