Results 11 to 20 of about 2,869,951 (334)
Experimental evolution of a pheromone signal
Sexual signals are important in speciation, but understanding their evolution is complex as these signals are often composed of multiple, genetically interdependent components.
Thomas Blankers +3 more
doaj +1 more source
Interactions With Plant Defences Isolate Sympatric Populations of an Herbivorous Mite
Host plant specialisation can promote evolutionary divergence between herbivore populations associated with different plant species. While the mechanisms by which specialist species exploit their hosts have been studied widely across taxa, less is known ...
Ernesto Villacis-Perez +6 more
doaj +1 more source
Background Of all lifestyle behaviours, smoking caused the most deaths in the last century. Because of the time lag between the act of smoking and dying from smoking, and because males generally take up smoking before females do, male and female smoking ...
Maarten Wensink +4 more
doaj +1 more source
Juvenile Spider Mites Induce Salicylate Defenses, but Not Jasmonate Defenses, Unlike Adults
When plants detect herbivores they strengthen their defenses. As a consequence, some herbivores evolved the means to suppress these defenses. Research on induction and suppression of plant defenses usually makes use of particular life stages of ...
Jie Liu +7 more
doaj +1 more source
Introduction Global morbidity from enteric infections and diarrhoea remains high in children in low-income and middle-income countries, despite significant investment over recent decades in health systems and water and sanitation infrastructure.
Blessing Mberu +14 more
doaj +1 more source
Time-series analysis of parish register series can be used to study human population dynamics at three different levels: (i) The metapopulation of preindustrial rural England. A short wavelength, exogenous oscillation in the burials series of 404 parishes can be detected which, it is suggested, was driven by a cycle of malnutrition associated with ...
Duncan, S, Duncan, C, Scott, S
openaire +2 more sources
Stratification in health and survival after age 100: evidence from Danish centenarians
Background The existence of a super-select group of centenarians that demonstrates increased survivorship has been hypothesized. However, it is unknown if this super-select group possesses similar characteristics apart from extreme longevity.
Jesús-Adrián Alvarez +4 more
doaj +1 more source
Modeling and forecasting sex differences in mortality: a sex-ratio approach
Female and male life expectancies have converged in most industrialized societies in recent decades. To achieve coherent forecasts between females and males, this convergence needs to be considered when forecasting sex-specific mortality.
Marie-Pier Bergeron-Boucher +3 more
doaj +1 more source
Introduction Previous studies have attempted to review the vast body of evidence on adolescent sexual and reproductive health (ASRH), but none has focused on a complete mapping and synthesis of the body of inquiry and evidence on ASRH in sub-Saharan ...
Anthony Idowu Ajayi +6 more
doaj +1 more source
Population dynamics at high Reynolds number [PDF]
We study the statistical properties of population dynamics evolving in a realistic two-dimensional compressible turbulent velocity field. We show that the interplay between turbulent dynamics and population growth and saturation leads to quasi ...
A. Kolmogorov +9 more
core +4 more sources

