Multiple regression models were created to explain spatial and temporal variation in the δC and δN values of fish populations on the West Florida Shelf (eastern Gulf of Mexico, USA). Extensive trawl surveys from three time periods were used to acquire muscle samples from seven groundfish species. Isotopic variation (δCvar and δNvar) was calculated as the deviation from the isotopic mean of each...

Neutrophil swarms protect healthy tissues by sealing off sites of infection. In the absence of swarming, microbial invasion of surrounding tissues can result in severe infections. Recent observations in animal models have shown that swarming requires rapid neutrophil responses and well-choreographed neutrophil migration patterns. However, in animal models physical access to the molecular signal...

BACKGROUND Characterizing the movement patterns of animals is an important step in understanding their ecology. Various methods have been developed for classifying animal movement at both coarse (e.g., migratory vs. sedentary behavior) and fine (e.g., resting vs. foraging) scales. A popular approach for classifying movements at coarse resolutions involves fitting time series of net-squared disp...

Migration remains one of the great mysteries of animal life. Small migratory birds rely on refuelling stopovers after crossing ecological barriers such as deserts or seas. Previous studies have suggested that fuel reserves may determine stopover duration but this hypothesis could not be tested because of methodological limitations. Here, we provide evidence that subcutaneous fat stores determin...

Cell migration and guidance are complex processes required for morphogenesis, the formation of tumor metastases, and the progression of human cancer. During migration, guidance molecules induce cell directionality and movement through complex intracellular mechanisms. Expression of these molecules has to be tightly regulated and their signals properly interpreted by the receiving cells so as to...

Department of Zoology and Physical Anthropology. Faculty of Biology, University Complutense of Madrid, José Antonio Novais, Ciudad. Universitaria, 28040 Madrid, Spain. San Juan Bautista 1, 4B. 28231 Las Rozas de Madrid, Madrid, Spain. Virgen del Camino 3, 3D. 28911 Leganés Madrid, Spain. British Antarctic Survey, UK. Currently at Migrate Technology Ltd., Cambridge, UK. Dutch Centre for Avian Mi...