Stabilizing and directional female choice for male calls in the European green toad

Castellano, Sergio; Giacoma, Cristina

doi:10.1006/anbe.1998.0784

Cited by 82 publications

(85 citation statements)

References 22 publications

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“…There was a strong preference for lower-frequency calls in Hyla ebraccata when the difference between stimuli was less than 2 SD of the study population (Wollerman 1998); comparable preference patterns were found in Alytes (Márquez 1995). Castellano and Giacoma (1998) found weak preference for lower-frequency calls in Bufo viridis when the alternatives were a medium-versus a higher-frequency call, but there was a strong preference for medium-frequency calls when the alternative stimulus was lower than the minimum value observed in the population. Their results together with those of Már-quez and Bosch (1997) indicate that selection for low frequencies in the species they tested is not open ended.…”

Section: Discussionmentioning

confidence: 62%

Signal variation and call preferences for whine frequency in the túngara frog, Physalaemus pustulosus

Bosch¹,

Rand

Ryan

2000

Behavioral Ecology and Sociobiology

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Properties of sexual signals can differ in the amount of within-male variability. In several species of anurans, females exert stabilizing or weakly directional preferences on less variable call properties, and highly directional preferences on more variable ones. Preferences of female túngara frogs, Physalaemus pustulosus, were examined for two call characteristics: a less variable spectral character, dominant frequency of the whine, and a more variable temporal character, inter-call interval. Eight phonotaxis experiments using synthetic calls were conducted with gravid females. Stimuli presented for both characters were based on the mean and standard deviation (SD) of those characters in the study population. For each character, we used four intervals of variation (1, 2, 3, and 4 SD) between stimuli in four different experiments. As has been found in some other anuran species, preference was stronger for the more variable temporal character, increasing in proportion to the difference between stimuli. Preference for the less variable spectral character was not significant until the difference between stimuli was substantial. The strength of female preference, estimated as latency to choose, the number of speakers visited, and the number of females showing phonotaxis, increased in proportion to the increase in the difference between stimuli. All these measures of strength of preference were greater in response to the more variable temporal character compared to responses to the less variable spectral character.

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Section: Discussionmentioning

confidence: 62%

Signal variation and call preferences for whine frequency in the túngara frog, Physalaemus pustulosus

Bosch¹,

Rand

Ryan

2000

Behavioral Ecology and Sociobiology

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“…Thus, mismatches can occur in two ways: through an openended preference function where females prefer extreme trait values or through a unimodal preference function where trait values below and above are less attractive to females, but the population preference mean is displaced from the population trait mean. These two preference functions have been termed`directional' and`stabilizing', respectively (Ritchie 1996;Castellano & Giacoma 1998;Wollerman 1998) due to the predicted selective pressures on males. However, unimodal functions mismatched to the population trait mean may also result in directional selection on male signals.…”

Section: (C) Preference^trait Associationsmentioning

confidence: 99%

“…Here we investigate Gerhardt's (1991) pattern in crickets, providing a phylogenetically independent comparison to frogs (Gerhardt et al 1996;Castellano & Giacoma 1998;Wollerman 1998). Like frogs, female crickets exhibit positive phonotaxis to a male calling song to initiate the courtship sequence (Ewing 1989).…”

Section: Introductionmentioning

confidence: 99%

Acoustic preference functions and song variability in the Hawaiian cricketLaupala cerasina

Shaw

Herlihy

2000

Proc. R. Soc. Lond. B

156

136

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Female preference functions for di¡erent sexual traits can di¡er signi¢cantly, from`unimodal' to`open ended'. Through the study of acoustic communication in anurans, several studies have reported an association between static (stereotyped) traits versus dynamic (variable) traits and preference function shape (unimodal versus open ended, respectively). Observing a similar pattern in a phylogenetically independent group would suggest that deterministic forces have caused a relationship between signal variability and preference function shape in acoustic signalling systems. We examined this phenomenon in crickets, another animal characterized by intersexual acoustic communication. We measured the withinmale variability for three acoustic features of the male calling song in Laupala cerasina and the corresponding shape of the female preference function for each of these features. We o¡er support for the generalization that open-ended preference functions correspond to relatively dynamic courtship traits and unimodal preference functions correspond to relatively static courtship traits. We discuss the evolutionary signi¢cance of these ¢ndings in the context of the natural history of the Laupala species radiation.

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“…In terms of sexual selection, this form of preference function represents stabilizing selection if the match with the mean is very close or weakly directional selection if the preferred range is somewhat higher or lower than the mean. Unimodal preference functions are typical for static properties such as carrier frequency (e.g., Doherty and Gerhardt 1984b;Gerhardt 1991Gerhardt , 2005aGrafe 1997;Márquez and Bosch 1997;Castellano and Giacoma 1998) and pulse rate (e.g., Arak 1988;Castellano and Giacoma 1998;Bush et al 2001;Fig. 5.5).…”

Section: Unimodal Preference Functionsmentioning

confidence: 99%

Recognition and Localization of Acoustic Signals

Gerhardt¹,

Bee²

Springer Handbook of Auditory Research

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Stabilizing and directional female choice for male calls in the European green toad

Cited by 82 publications

References 22 publications

Signal variation and call preferences for whine frequency in the túngara frog, Physalaemus pustulosus

Signal variation and call preferences for whine frequency in the túngara frog, Physalaemus pustulosus

Acoustic preference functions and song variability in the Hawaiian cricketLaupala cerasina

Recognition and Localization of Acoustic Signals

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