In many animal taxa, acoustic signals are commonly used to communicate information to a variety of receivers. In many frogs and toads, males produce advertisement calls to attract females and repel nearby competitors during the breeding season. While these species-specific calls are typically simple (i.e., a single, repeated note), some anurans produce complex calls containing multiple types of notes that vary in number and temporal order. I investigated the complex vocal repertoire of northern leopard frogs (Rana pipiens) as a model system; the main objectives of my dissertation research were: (1) to describe and categorize the advertisement calls of R. pipiens males, (2) to identify the function of these calls (i.e., mate attraction or male-male competition), and (3) to determine female preferences with respect to male call complexity.determine when a female approached a speaker. To further monitor female behavior, I filmed approximately 25% of all sessions using a Sony digital camcorder (Model DCR- TRV350) equipped with night-vision capabilities. To test femaleanbsp;...
|Title||:||Advertisement Call Complexity in Northern Leopard Frogs, Rana Pipiens|
|Author||:||Krista Ann Larson|
|Publisher||:||ProQuest - 2007|