Naslov
Acoustic plasticity during competition of Bush cricket males: How to deal with stronger singing rivals?

Autori
Anichini, Marianna ; Rebrina, Fran ; Reinhold, Klaus ; Lehmann, Gerlind U.C.

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
ABSTRACT VOLUME / XXVI INTERNATIONAL BIOACOUSTICS CONGRESS / Bhatt, Dinesh ; Sethi, V.K. ; Singh, Amar ; Rathi, Robin ; Kumar, Pankaj - Haridwar : Department of Zoology and Environmental Science Gurukula Kangri Vishwavidyalaya, 2017, 22-22

Skup
XXVI INTERNATIONAL BIOACOUSTICS CONGRESS

Mjesto i datum
Haridwar, Indija, 08.10.2017. - 13.10.2017

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
NEMA

Sažetak
In bush crickets, sexual selection is related to sound and songs are honest signals. The same acoustic cues can be used to identify singing abilities of neighbors and quality of mating partners by competing males and choosing females. Males in better body condition sing more efficiently and females prefer males who sing for longer and louder. To understand how males adjust their singing activity according to their own body condition and the condition of rivals, we investigated males of Poecilimon veluchianus in the field. Considering male body mass as a predictor of quality, we used heavy or light males as focus specimens. These animals were tested in competition with two rivals, which were either both heavy or both light. We measured four different song traits (verse and pause duration, duty cycle and verse rate). Both verse duration and rate were affected by the interaction between body mass of the focal male and type of rivalry. Light males sang with shorter verses produced at higher rate than heavy males, when faced with two heavy rivals. In competition with light rivals, light focal males produced longer verses at lower rates. In contrast, heavy focal males did not modify either duration or rate of verses when facing different rivals, and their duty cycle was always higher than in light focal males. While heavy individuals are better singers and adjust only little when facing different rival types, light males show a higher singing plasticity. They cannot face up with strong singers due to energetic constraints and they invest more when rivalry is weaker to increase the chances to be chosen by females.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA