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Articles 931 - 933 of 933
Full-Text Articles in Life Sciences
Host Allometry Influences The Evolution Of Parasite Host-Generalism: Theory And Meta-Analysis, Josephine G. Walker, Amy Hurford, Jo Cable, Amy R. Ellison, Stephen J. Price, Clayton E. Cressler
Host Allometry Influences The Evolution Of Parasite Host-Generalism: Theory And Meta-Analysis, Josephine G. Walker, Amy Hurford, Jo Cable, Amy R. Ellison, Stephen J. Price, Clayton E. Cressler
School of Biological Sciences: Faculty Publications
Parasites vary widely in the diversity of hosts they infect: some parasite species are specialists—infecting just a single host species, while others are generalists, capable of infecting many. Understanding the factors that drive parasite host-generalism is of basic biological interest, but also directly relevant to predicting disease emergence in new host species, identifying parasites that are likely to have unidentified additional hosts, and assessing transmission risk. Here, we use mathematical models to investigate how variation in host body size and environmental temperature affect the evolution of parasite host-generalism. We predict that parasites are more likely to evolve a generalist strategy …
Cumulative Herbivory Outpaces Compensation For Early Floral Damage On A Monocarpic Perennial Thistle, Natalie M. West, Svata M. Louda
Cumulative Herbivory Outpaces Compensation For Early Floral Damage On A Monocarpic Perennial Thistle, Natalie M. West, Svata M. Louda
School of Biological Sciences: Faculty Publications
Floral herbivory represents a major threat to plant reproductive success, driving the importance of plant tolerance mechanisms that minimize fitness costs. However, the cumulative insect herbivory plants experience under natural conditions complicates predictions about tolerance contributions to net fitness. Apical damage can lead to compensatory seed production from late season flowering that ameliorates early season fitness losses. Yet, the compensation realized depends on successful development and herbivore escape by later season flowers. Using monocarpic perennial Cirsium canescens, we quantified seed-reproductive fitness of plants with vs. without experimental damage to the early-developing large apical flower head, with and without a …
Knowing Your Own: A Classroom Case Study Using The Scientific Method To Investigate How Birds Learn To Recognize Their Offspring, Joanna K. Hubbard, Daizaburo Shizuka, Brian A. Couch
Knowing Your Own: A Classroom Case Study Using The Scientific Method To Investigate How Birds Learn To Recognize Their Offspring, Joanna K. Hubbard, Daizaburo Shizuka, Brian A. Couch
School of Biological Sciences: Faculty Publications
Understanding the scientific method provides students with a necessary foundation for careers in science-related fields. Moreover, students can apply scientific inquiry skills in many aspects of their daily lives and decision making. Thus, the ability to apply the scientific method represents an essential skill that students should learn during undergraduate science education. We designed an interrupted case study in which students learn about and apply the scientific method to investigate and recapitulate the findings of a published research article. This research article addresses the question of how parents recognize their own young in a system where birds of the same …