Chorus structure in tarbush grasshoppers: inhibition, selective phonoresponse and signal competition

Minckley, Robert L.; Greenfield, Michael D.; Tourtellot, Michael K.

doi:10.1016/0003-3472(95)80121-9

Cited by 42 publications

(17 citation statements)

References 34 publications

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“…However, statistically significant deviations from random expectation of overlap were absent in choruses with four or more males. Selective attention, in which males adjust the timing of calls so as to reduce interference with their nearest or loudest members of the chorus, is an option that has been documented in some anurans (Brush and Narins 1989;Schwartz 1993;Boatright-Horowitz et al 2000;Greenfield and Rand 2000) and chorusing orthopteran insects (Minckley et al 1995;Snedden et al 1998). Our data, however, provide no empirical support for the use of this tactic by gray treefrogs.…”

Section: Discussioncontrasting

confidence: 71%

Acoustic interactions among male gray treefrogs, Hyla versicolor , in a chorus setting

Schwartz

Buchanan

Gerhardt

2002

Behavioral Ecology and Sociobiology

116

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We assembled groups of up to eight male gray treefrogs, Hyla versicolor, in an artificial pond and examined vocal behavior under conditions of different chorus size. Males avoided call overlap when calling in groups of two, but not in larger choruses. The pattern of interference failed to reveal selective attention based on intermale separation, and males in close spatial proximity tended to overlap calls more than more widely separated individuals did. Males were sensitive to the removal of males from or the addition of males to an aggregation, often responding to a change of just one individual with shifts in call duration and rate. Nevertheless, males tended to maintain their relative position in a hierarchy based on call duration following changes in chorus size. We hypothesize that adjustments in gross temporal properties are a response to the increased probability of call interference in larger choruses. Finally, we calculated repeatabilities of call duration, calling rate, and pulse effort within nights using sliding-analysis windows of 30 s to 29.5 min. The change in repeatabilities with window duration suggests that a female could best distinguish among males by assessing their performance for between 4 and 14 min, depending on the measure of calling behavior. However, because the magnitude of change was relatively small, our data do not lend strong support to the hypothesis that there is an optimum time period over which females should assess the calling of males in order to maximize their ability to discriminate among males.

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Section: Discussioncontrasting

confidence: 71%

Acoustic interactions among male gray treefrogs, Hyla versicolor , in a chorus setting

Schwartz

Buchanan

Gerhardt

2002

Behavioral Ecology and Sociobiology

116

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“…While Clark & Uetz (1992) showed that female M. inclemens do not show a preference for males based on morphological di¡er-ences, the current study using synthetic stimuli demonstrated that di¡erences in morph-speci¢c courtship behaviour could signi¢cantly in£uence female attraction and preference for a potential mate. Such a preference for a ¢rst male is consistent with previous studies on M. inclemens (Clark & Uetz 1992) and those on acoustic signalling in insects and anuran amphibians (Howard & Palmer 1995;Minckley et al 1995). However, M. inclemens females appear to be unique with regard to their selection of males as a function of distance.…”

Section: Discussionsupporting

confidence: 90%

Attracting female attention: the evolution of dimorphic courtship displays in the jumping spiderMaevia inclemens(Araneae: Salticidae)

Clark

Morjan

2001

Proc. R. Soc. Lond. B

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Males of the dimorphic jumping spider (Maevia inclemens) di¡er in both their morphologies and courtship displays (i.e. phase I). The tufted morph stilts and waves from an average distance of 9 cm from a female, whereas the grey morph crouches and sidles from an average distance of 3 cm from a female. The objective of this study was to determine the signi¢cance of the di¡erent courtship displays using computeranimated versions of males performing phase I courtship in a Y-maze where ¢rst male movement and then the distance of the stimulus was controlled. Females selected the ¢rst male that they orientated to at the close distance of 4 cm and at the far distance of 16 cm. However, there was no preference for the ¢rst male at the intermediate distance of 8 cm or the furthest distance of 24 cm. In addition, males have morph-speci¢c advantages regarding the time it takes to attract female attention. Grey males attracted female attention in less time than tufted males at 4 and 8 cm. However, tufted males attracted female attention in less time than grey males at 16 cm. These results suggest a mechanism for the evolution of two di¡erent courtship displays whereby each morph has an advantage at di¡erent distances from the female.

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“…During choruses, males advertise vocally to attract females for mating ͑Minckley et al, 1995;Schwartz and Buchanan, 2002͒. Females, on the other hand, are in general voiceless and move among the males to choose appropriate mates on the basis of their advertisement calls ͑Morris, 1991; Howard and Young, 1998;Wollerman and Wiley, 2002;Smith and Roberts, 2003͒. Unlike many insect and anuran species, however, the following reasons indicate that Chinese alligators may not bellow to compete for or attract mates during choruses: ͑i͒ both male and female Chinese alligators engage in bellowing choruses and bellow synchronously; ͑ii͒ attending alligators remain stationary throughout; and ͑iii͒ the choruses last only about 10 min with abrupt onset and offset, with an average of 14.3Ϯ 6.40 bellows per alligator during each chorus ͑Wang et al, 2007͒.…”

Section: Discussionmentioning

confidence: 99%

Why do Chinese alligators (Alligator sinensis) form bellowing choruses: A playback approach

Wang

Zhang²,

Wang³

et al. 2009

The Journal of the Acoustical Society of America

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Crocodilians are quite vocal relative to other reptile groups, and the alligators are among the most vocal of the crocodilians. The Chinese alligator, Alligator sinensis, is usually solitary but engages in bellowing choruses in certain waters during the mating season. This paper reports the organization of Chinese alligator's bellowing choruses based upon field observations and playback experiments. Alligators of both genders engaged in the choruses, remaining immobile throughout and inclining toward bellowing synchronously ͑i.e., starting and finishing at about the same time͒. The choruses lasted about 10 min with abrupt onset and offset. Moreover, playback experiments revealed that both male and female alligators responded equally to bellowing stimuli from the same and opposite sexes and that none of the tested alligators approached the loudspeaker in spite of playback of male or female stimuli. These suggest that Chinese alligators may not bellow to compete for or attract mates during the choruses. Instead, when their ecological behaviors, namely, dispersed inhabitation, multi-copulation, restricted mating season, etc., are considered, we hypothesize that they may synchronize bellows to enhance group detectability for assembling individuals into certain waters for subsequent copulations.

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Chorus structure in tarbush grasshoppers: inhibition, selective phonoresponse and signal competition

Cited by 42 publications

References 34 publications

Acoustic interactions among male gray treefrogs, Hyla versicolor , in a chorus setting

Acoustic interactions among male gray treefrogs, Hyla versicolor , in a chorus setting

Attracting female attention: the evolution of dimorphic courtship displays in the jumping spiderMaevia inclemens(Araneae: Salticidae)

Why do Chinese alligators (Alligator sinensis) form bellowing choruses: A playback approach

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