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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 …
Intrasexual Territoriality, Degree Of Aggression, And Duet Function In The Carolina Wren (Thryothorus Ludovicianus), Danny Zapata
Intrasexual Territoriality, Degree Of Aggression, And Duet Function In The Carolina Wren (Thryothorus Ludovicianus), Danny Zapata
MSU Graduate Theses
Territorial behavior is fundamental for the reproductive success of many species. In many monogamous birds, mated pairs defend year-round territories from conspecifics. Males and females often participate in such interactions in a seemingly cooperative fashion. Furthermore, many of them have developed complex vocal interactions known as duets, in which one member of a pair overlaps its partner’s song in a more or less coordinated fashion, apparently to cooperate in territory defense. However, males and females often respond differently depending on the sex of the intruder; they differ in the degree and mode of aggression displayed during these interactions, and the …