A species may overlap with a mosaic of species across its geographic range. Many types of species interaction cause selection on mating traits, but their role in generating within-species divergence has been neglected. The pattern of reproductive character displacement (RCD) has been classically attributed to reinforcement, a process driven by selection against hybridisation. Recent reinforceme...

Early research on the mental health of civilians displaced by armed conflict focused primarily on the direct effects of exposure to war-related violence and loss. Largely overlooked in this war exposure model were the powerful effects of ongoing stressors related to the experience of displacement itself. An ecological model of refugee distress is proposed, drawing on research demonstrating that...

Theoretical models suggest that geographic overlap with different heterospecific assemblages can promote divergence of mate recognition systems among conspecific populations. Divergence occurs when different traits undergo reproductive character displacement across populations within a contact zone. Here, I tested this hypothesis by assessing patterns of acoustic signal divergence in two- and t...

BACKGROUND Substance use among populations displaced by conflict is a neglected area of public health. Alcohol, khat, benzodiazepine, opiate, and other substance use have been documented among a range of displaced populations, with wide-reaching health and social impacts. Changing agendas in humanitarian response-including increased prominence of mental health and chronic illness-have so far fa...

T-Condylar fracture of the distal humerus is rare in the skeletally immature children and is very rare in young children, under 9 years of age. This fracture has been classified  as:  type A ( minimally displaced or undisplaced), type B (displaced  but  not comminuted ) and type C (displaced and comminuted). Herein, we report a T-Condylar fracture of the distal humerus in a 5-yr-old boy. This f...