Ecology: A habitat fit for a queen bee
Nature
2017년3월16일

The survival and persistence of bumblebee family lineages increases substantially with the proportion of high-quality foraging habitat within 250-1,000 m of the colony, an analysis of three bumblebee species reveals. The findings, published online in Nature this week, support the idea that conservation measures that boost floral resources at a landscape level throughout the season can have positive effects on wild pollinators in agricultural settings.
Habitat loss due to agricultural intensification is a major cause of the global decline in insect pollinators, including bumblebees. Although various initiatives to restore pollinator habitats and populations have been developed, an understanding of the effects of landscape changes on key population-level parameters, such as survival between lifecycle stages, is lacking for bumblebees.
Claire Carvell and colleagues studied three common bumblebee (Bombus) species within 20 km2 of mixed agricultural landscape (comprising farmland, grassland, woods and villages) in Buckinghamshire, UK, over two years. They conducted land-use and habitat surveys, and sampled DNA from 537 spring queens and 2,101 worker bees to analyse relationships within and between generations in the colony. The authors then used demographic and spatial modelling to evaluate the between-year survival of family lineages in the field populations. They find that colonies located close to high-value foraging habitats, including spring flower resources, are more likely to produce daughter queens that survive winter hibernation and spring emergence.
In an accompanying News & Views, Jeffrey Lozier concludes that the study provides a framework that could be used “to investigate the effects of pesticides, pathogens and other factors on multigenerational life-cycle dynamics, with the goal of identifying a realistic way to optimize land-use heterogeneity for bumblebee populations.”
doi: 10.1038/nature21709
리서치 하이라이트
-
3월4일
Environment: Reservoirs account for more than half of water storage variabilityNature
-
3월2일
Evolution: Neanderthals may have heard just like usNature Ecology & Evolution
-
3월2일
Geoscience: Earth’s atmosphere may return to low-levels of oxygen in one billion yearsNature Geoscience
-
2월26일
Environment: Shifting from small to medium plastic bottles could reduce PET wasteScientific Reports
-
2월24일
Environment: European forests more vulnerable to multiple threats as climate warmsNature Communications
-
2월11일
Environment: Global CFC-11 emissions in declineNature