BACKGROUND Socioeconomic inequality in health and mortality remains a disturbing reality across nations including Bangladesh. Inequality drew renewed attention globally. Bangladesh though made impressive progress in health, it makes an interesting case for learning. This paper examined the trends and changing pattern of socioeconomic inequalities in under-five mortality in rural Bangladesh. It ...

Proximate and ultimate determinants of cathemeral activity in brown lemurs Giuseppe Donati *, Nicoletta Baldi , Valentina Morelli , Jörg U. Ganzhorn , Silvana M. Borgognini-Tarli b,1 Nocturnal Primate Research Group, Department of Anthropology and Geography, Oxford Brookes University Department of Biology, Unit of Anthropology, University of Pisa Biozentrum Grindel, Department of Animal Ecology...

Every country has a desire to balance its population growth according to its socioeconomic conditions. Three major components affecting population growth are fertility, mortality and migration, and among these components, fertility plays the most important role. A number of factors such as social, cultural, economic, health and other environmental factors directly determine fertility. Davis and...

Performance measures associated with the vertebrate jaw system may provide important insights into vertebrate ecology and evolution because of their importance in many ecologically relevant tasks. Previous studies have shown that in many taxa, evolution toward higher bite force has gone hand in hand with the evolution of larger body size. However, independent of differences in overall body size...

The soil nematode Caenorhabditis elegans is an example of a species in which self-fertilizing hermaphrodites predominate, but functional males continue to persist--allowing outcrossing to persevere at low levels. Hermaphrodites can produce male progeny as a consequence of sex chromosome non-disjunction or via outcrossing with males. Consequently, the genetics of sex determination coupled with t...

Studies of the causes of fertility levels and their changes often seek to measure directly the impact of socioeconomic factors on fertility. Such procedures have a broad appeal to policymakers, offering as they do to pinpoint mechanisms susceptible to manipulation by official policy. Despite this appeal, such approaches are considerably more problematical in their application. Not infrequently,...

In many animal species, males and females attain different adult body sizes. The processes underlying such sexual differences are undoubtedly complex and may involve an interplay between adaptive, exaptive, and nonadaptive genetic influences on the one hand and environmental variables on the other. For example, large body size may be shown by males because genes for that character confer a sele...

The recent decline in fertility in Bangladesh froin a total fertility rate of 6.3 children per women in 1975 to 3.5 in 1995 (MHPC, 1978:73; BBS, 1996) has created interest among researchers, policy makers and academicians. This is because such a dramatic change in fertility has occurred without a substantial improvement in socio-economic status, health conditions and otlier factors thought to b...