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Sex-Based Differences In Anti-Predator Response Of Crickets To Chemical Cues Of A Mammalian Predator, Brian P. Tanis, Bradley Bott, Brian J. Gaston
Sex-Based Differences In Anti-Predator Response Of Crickets To Chemical Cues Of A Mammalian Predator, Brian P. Tanis, Bradley Bott, Brian J. Gaston
Biological Sciences Faculty Publications
Anti-predator behaviors like vigilance or hiding come at the expense of other fitness increasing behaviors such as foraging. To compensate for this trade-off, prey assess predation risk and modify the frequency of anti-predator behaviors according to the likelihood of the threat. In this study, we tested the ability of house crickets (Acheta domesticus) to indirectly assess predation risk via odors from a mammalian predator, Elliot's short-tailed shrew (Blarina hylophaga). As natural differences in encounter rates and predation risk differs between sexes, we tested if male and female crickets perceive similar rates of predation risk from the presence of shrew odor …
The Effects Of Environmental Variability And Latitude On Breeding Behaviors And Life History Traits Of Aves In North America, Elizabeth E. Tharman
The Effects Of Environmental Variability And Latitude On Breeding Behaviors And Life History Traits Of Aves In North America, Elizabeth E. Tharman
Master's Theses
Breeding systems among Aves have garnered attention in the last several decades as many species considered monogamous have been found to exhibit an alternative breeding system such as polygyny, polyandry, cooperative breeding, or colonial nesting. My thesis focuses on assessing the correlations between type of breeding system and resource availability by using environmental variables as proxy variables. It also assess the correlations between life history trait variables and environmental variables. Both breeding system and life history traits are analyzed at the species and population levels while controlling for phylogenetic relationships and geographic location when appropriate. Breeding system among species was …