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Full-Text Articles in Behavior and Ethology
Effects Of Sex And Reproductive Condition On Behavior Of Southern Red-Backed Salamanders: Activity, Agonistic Behavior And Escape Velocity, Megan N. Mosier
Effects Of Sex And Reproductive Condition On Behavior Of Southern Red-Backed Salamanders: Activity, Agonistic Behavior And Escape Velocity, Megan N. Mosier
MSU Graduate Theses
Producing and carrying eggs is energetically costly and therefore can affect behavior. Female Southern Red-backed Salamanders (Plethodon serratus) in the Ozarks reproduce biennially, and so during the reproductive season some females are gravid and some are non-gravid. In this study, we compared the exploratory and aggressive behaviors of gravid females, non-gravid females, and males, as well as the escape velocities of each sex class. In exploratory trials, sex did not affect distance travelled, but gravid females and males showed shorter latencies to move than non-gravid females during the winter. During the aggression trials, individuals were subjected to a …
Territorial Behavior In Southern Red-Backed And Ozark Zigzag Salamanders: Effects Of Sex, Species, And Ownership, Colton Savage Lynn
Territorial Behavior In Southern Red-Backed And Ozark Zigzag Salamanders: Effects Of Sex, Species, And Ownership, Colton Savage Lynn
MSU Graduate Theses
Territorial disputes are common among terrestrial woodland salamanders (genus Plethodon). Males and females of both Ozark zigzag (P. angusticlavius) and southern red-backed (P. serratus) salamanders are territorial, but differing costs and benefits between sexes may influence the expression of territorial behavior. I compared the competitive and exploratory behavior of males and females of both species in laboratory experiments. Competitive behavior was assessed through staged contests between same-sex, same-sized conspecifics. There were no differences between males and females for territory owners (residents). Female intruders were more aggressive than male intruders, spending more time in and performing higher grades …