Population genetics and ecology of rare bumblebee species in the UKEllis, Jonathan ShawEllis JS (2005) Population genetics and ecology of rare bumblebee species in the UK. PhD thesis, University of Southampton, UK
changes in adult sex ratios can affect population dynamics34,35; assuming a constant sex ratio when modeling demographic rates can lead to incorrect conclusions about population trends34,35. Second, there is evidence for sex-based differences in bee foraging behavior, including floral preferences...
As a result, many RNA viruses are highly genetically heterogeneous and exist within infected population structures known as quasispecies. It has been proposed that this gives these viral pathogens an increased ability to shift to a new environmental niche, such as a new host, as a suitable ...
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005 Want to thank TFD for its existence?Tell a friend about us, add a link to this page, or visitthe...
Nucleus colonies of bees were established as previously described and relocated to a geographically isolated apiary and were grown to full-size colonies and equalized based on population prior to initiation of the study. The bees were maintained in eight-frame Langstroth equipment and kept as single...
A general mathematical model for population dispersal featuring long range taxis is presented and exemplified by the dispersal episode of the Africanized honey bees ( Apis mellifera adansonii) throughout the American Continent. The mathematical model is a discrete-time and nonlocal model represented ...
被引量: 318发表: 2005年 Genome resequencing reveals multiscale geographic structure and extensive linkage disequilibrium in the forest tree Populus trichocarpa Plant population genomics informs evolutionary biology, breeding, conservation and bioenergy feedstock development. For example, the detection of reliab...
However, a doubling of population size resulted in a 4-day decrease in lifespan (Rueppell et al., 2009), whereas the continuous addition of young workers (resulting in less than doubling of colony size) resulted in a 5-fold greater reduction of 23.3 days. The effect of population ...
Viruses are omnipresent, yet the knowledge on drivers of viral prevalence in wild host populations is often limited. Biotic factors, such as sympatric managed host species, as well as abiotic factors, such as climatic variables, are likely to impact vira
had low numbers of DWV-A reads representing < 15% of the observed virome. In another study from Germany, many but not all mites in a population appear to carry DWV infections61. How and why some populations had such low DWV-A reads is unknown and worthy of more study. Our assays...