Predictors of transfer behaviours in adult university students

Adult students are critical to addressing the college completion crisis. Retention and completion for adults lags behind students who enter college directly from high school. However, higher education has largely been built around service to younger high school graduates, and institutions are slow to change. A shift in focus to accommodate the needs and interests of adult learners will require additional research regarding the enrollment patterns and behaviours of adult students. This study uses quantitative methods and the Beginning Postsecondary Students 12/14 dataset to consider the role of transfer in the experience of the adult learner, with specific attention to the characteristics, demographics and experiences of adult transfer students as well as the predictors of reverse and lateral transfer behaviour in adult student populations.

Multiple transmission routes sustain high prevalence of a virulent parasite in a butterfly host

Understanding factors that allow highly virulent parasites to reach high infection prevalence in host populations is important for managing infection risks to human and wildlife health. Multiple transmission routes have been proposed as one mechanism by which virulent pathogens can achieve high prevalence, underscoring the need to investigate this hypothesis through an integrated modelling-empirical framework. Here, we examine a harmful specialist protozoan infecting monarch butterflies that commonly reaches high prevalence (50–100%) in resident populations. We integrate field and modelling work to show that a combination of three empirically-supported transmission routes (vertical, adult transfer and environmental transmission) can produce and sustain high infection prevalence in this system. Although horizontal transmission is necessary for parasite invasion, most new infections post-establishment arise from vertical transmission. Our study predicts that multiple transmission routes, coupled with high parasite virulence, can reduce resident host abundance by up to 50%, suggesting that the protozoan could contribute to declines of North American monarchs.