Tropical Ecology and Conservation [Monteverde Institute]

Alternative Title

Alteración de las canciones de los grillos debido a la competencia a través de las grabaciones

Creator

Katie Ehlers

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Publication Date

November 2009

Abstract

In many animal species, females do not mate randomly but rather they choose males based on their courtship signals. With crickets, calls may not be used soley for attracting a mate; they can also be used to reduce a competitor’s reproductive success. It was thus predicted that crickets would both respond to playbacks in an attempt to compete with the singing male and also alter their song in some way when singing competitively. Two different playbacks were created with one having a single cricket’s song and the other having a cricket chorus, and individuals received each treatment to determine its affect of their signal. Results show that the crickets did in fact change their song with respect to the number of elements per song and the rate of the song. It was concluded that crickets respond the same to one cricket as they do to many crickets; the number of crickets used for a given playback did not affect the individual’s likelihood to respond. En muchas especies de animales, las hembras no escogen pareja al azar si no que escogen a los machos basadas en las señales de cortejo. En los grillos, los cantos no se pueden usar solamente para atraer a una pareja sino que también para reducir el éxito reproductivo de los competidores. Es así que predije que los grillos respondieran a las grabaciones para competir con los machos cantando y también alterando su canto para aumentar la competitividad. Dos grabaciones diferentes fueron creadas, uno con el canto de un grillo solitario y el otro con un coro de grillos, y los individuos recibieron cada tratamiento para determinar si afecta su señal. Los resultados muestran que los grillos cambian su canto con respecto al número de elementos por canto y la tasa de canto. Se concluye que los grillos responden de la misma manera a cantos individuales o grupales, el número de grillos usados en las grabaciones no afecta la probabilidad de respuesta.

Keywords

Crickets--Behavior, Grillos--Comportamiento, Sound production by insects, Produccion de sonido por los insectos, Monteverde Biological Station (Costa Rica), Estacion Biologica de Monteverde (Costa Rica), Costa Rica--Puntarenas--Monteverde Zone--Cerro Plano, Costa Rica--Puntarenas--Zona de Monteverde--Cerro Plano, CIEE Fall 2009, CIEE Otoño 2009

Description

Student Affiliation : Department of Biology, University of Wisconsin-Madison Born Digital

Subject: topical

Crickets--Behavior; Grillos--Comportamiento; Sound production by insects; Produccion de sonido por los insectos; CIEE Fall 2009; CIEE Otoño 2009

Subject: geographic

Monteverde Biological Station (Costa Rica); Estacion Biologica de Monteverde (Costa Rica); Costa Rica--Puntarenas--Monteverde Zone--Cerro Plano; Costa Rica--Puntarenas--Zona de Monteverde--Cerro Plano

Genre

Reports

Holding Location

|Monteverde Institute MVI

Identifier

M39-00539

Alteration of crickets songs due to competition via playbacks

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