Naslov
How do my neighbors sing? Influence of body quality in a bushcricket (Orthoptera: Tettigoniidae)

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

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

Izvornik
Abstract Book / Behaviour 2017, 35th International Ethological Conference/ASAB Summer Meeting 2017 / - Lisabon : ISPA - Instituto Universitário de Ciências Psicológicas, Sociais e da Vida, 2017, 142-142

Skup
Behaviour 2017, joint meeting of the 35th International Ethological Conference (IEC) and the 2017 Summer Meeting of the Association for the Study of Animal Behaviour (ASAB)

Mjesto i datum
Estoril, Portugal, 30.07.2017. - 04.08.2017

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
NEMA

Sažetak
In many acoustically interacting animals, song is an honest signal under sexual selection. Females of the bushcricket Poecilimon zimmeri preferred the heavier of two singing rival males, in a previous laboratory study. To understand how male body condition affects song traits during competition, we investigated the closely related bushcricket Poecilimon veluchianus under field conditions. Considering male body mass as a predictor of quality, we divided focal males into two classes: heavy and light. During our experiments, heavy or light focal males were tested against two rival males, which were either two heavy or two light competitors. Consequentially, focal males had to compete acoustically against two males representing: a) the same body mass ; b) different body mass. We measured four different song traits (verse and pause duration, duty cycle and verse rate). Verse duration was affected by body mass of the focal male, rival type and the interaction between these two variables. Light males sang significantly shorter verses than heavy males when faced with two heavy rivals. In the case of light rivals, both groups of males (light and heavy focals) presented almost the same verse duration. This was achieved in light focal singers by producing longer verses at a lower rate when facing rivalry of light competitors. In contrast, heavy focal males did not modify the duration of verses, duty cycle or verse rate when facing different rival types, but their duty cycle was always higher than in light males. It is evident that heavy individuals are better displayers and adapt little when facing rival singers. Since light males cannot face up with strong singers, they strategically change their singing activity, to be more likely chosen by females when rivalry is weaker. The acoustic competition in these bushcrickets drives males’ decision into their own song effort and investment.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA