caa a22 4500 46578190X CHVBK 20180323111957.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF00174019 doi (NATIONALLICENCE)springer-10.1007/BF00174019 The adaptive significance of acoustic spacing in male bushcrickets Tettigonia viridissima [Elektronische Daten] a perturbation experiment [Anthony Arak, Thorleifur Eiriksson, Tommy Radesäter] Summary: A perturbation experiment was carried out in which the spacing between singing male bushcrickets, Tettigonia viridissima, was artificially manipulated. The experiment entailed releasing virgin females into an area in which caged males were either spaced evenly or in which a proportion of the males were clumped. There was large variation among males in the proportion of time spent singing (range 39-91% of total singing time). Singing activity was correlated with male body weight, but was not influenced by male spacing. Out of a total of 108 females released during the experiment, the majority (N=90) moved from their release points onto the cage of one of the closest singing males. More distant signalers sometimes attracted females when one of the closest males did not sing, or sang very little, during the period in which females were moving. When clumped, males were less successful in attracting females than when regularly spaced within the experimental area. Therefore, within a homogeneous habitat in which females are randomly distributed, male mating success will be maximized when males space out as far as possible from their competitors. As predicted, a regular dispersion of signaling males is the pattern observed in the preferred microhabitats of this species in nature. Springer-Verlag, 1990 Arak Anthony Department of Zoology, Division of Ethology, University of Stockholm, S-10691, Stockholm, Sweden aut Eiriksson Thorleifur Department of Zoology, Division of Ethology, University of Stockholm, S-10691, Stockholm, Sweden aut Radesäter Tommy Department of Zoology, Division of Ethology, University of Stockholm, S-10691, Stockholm, Sweden aut Behavioral Ecology and Sociobiology Springer-Verlag 26/1(1990-01-01), 1-7 0340-5443 26:1<1 1990 26 265 https://doi.org/10.1007/BF00174019 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00174019 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Arak Anthony Department of Zoology, Division of Ethology, University of Stockholm, S-10691, Stockholm, Sweden aut NATIONALLICENCE 700 1- Eiriksson Thorleifur Department of Zoology, Division of Ethology, University of Stockholm, S-10691, Stockholm, Sweden aut NATIONALLICENCE 700 1- Radesäter Tommy Department of Zoology, Division of Ethology, University of Stockholm, S-10691, Stockholm, Sweden aut NATIONALLICENCE 773 0- Behavioral Ecology and Sociobiology Springer-Verlag 26/1(1990-01-01), 1-7 0340-5443 26:1<1 1990 26 265 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer