Do aggressive signals evolve towards higher reliability or lower costs of assessment?

2014 ◽  
Vol 27 (12) ◽  
pp. 2605-2613 ◽  
Author(s):  
P. Ręk
Keyword(s):  
Aggressive Signals

Male and female responses to call playback in the Andean frog Colostethus subpunctatus

2002 ◽  
Vol 23 (2) ◽  
pp. 141-150 ◽  
Author(s):  
Horst Lüddecke
Keyword(s):  
Repetition Rate ◽  
Laboratory Experiments ◽  
Initial Rate ◽  
High Repetition Rate ◽  
Advertisement Call ◽  
Vocal Response ◽  
High Repetition ◽  
Female Responses ◽  
Aggressive Signals

AbstractBecause Colostethus subpunctatus males tend to aggregate, it is likely that calling neighbours communicate vocally. Males advertise by producing long series of short notes at regular intervals. Note repetition rates may vary individually. To determine whether the vocal response to playback of an individual's own advertisement call depended mainly on his initial note repetition rate or on temperature, I experimented with 49 isolated calling males under field conditions. Two different responses occurred. The response type was independent of initial note repetition rate and ambient temperature. Twenty-six males maintained the basic pattern of the advertisement call, but irrespective of temperature they significantly increased note repetition rate in correlation to the initial rate. Twenty-three males changed their call pattern by grouping 2-3 notes into a bout with much shorter silent intervals between notes. Bout repetition rate was also correlated with the initial note rate, but it was lower. To interpret the role of different call patterns, phonotaxis behaviour of twelve females was studied in two-choice laboratory experiments. Each female had the opportunity to choose four times between the advertisement call with low and high note repetition rate, and four times between the latter and the bout. Females tended to choose the high repetition rate more often than the low rate or the bout. The study provides support that an increase in note repetition rate gives competitive advantage to the caller in attracting a female. Bouts are probably aggressive signals used by a resident to repel intruders from his calling site.

scholarly journals Oxytocin promotes convergence in personality between members of a monogamous pair

2020 ◽  
Author(s):  
Patrick K. Monari ◽  
Nathaniel S. Rieger ◽  
Kathryn Hartfield ◽  
Juliette Schefelker ◽  
Catherine A. Marler
Keyword(s):  
Social Context ◽  
Vocal Communication ◽  
Behavioral Responses ◽  
Ultrasonic Vocalization ◽  
Pair Formation ◽  
Emergent Property ◽  
Pair Bonding ◽  
Behavioral Type ◽  
Behavioral Convergence ◽  
Aggressive Signals

AbstractSocial context is critical in shaping behavioral responses to stimuli and can alter an individual’s behavioral type, which would otherwise be fixed in social isolation. For monogamous biparental vertebrates, social context is critical as interactions are frequent and consistent, involving high interindividual dependence and cooperation that can lead to large fitness impacts. We demonstrate that in the strictly monogamous and highly territorial California mouse, individuals alter approach response to an aggressive conspecific playback stimulus, barks, to become more similar to their partner during early bonding prior to pup birth; an effect distinct from assortative mating. Additionally, sustained vocalizations, an affiliative ultrasonic vocalization when used between pair members, correlate with increased behavioral convergence following pair formation suggesting a role for vocal communication in emergent pair behavior. We identified the neuropeptide oxytocin as sufficient to promote behavioral convergence in approach behavior of paired individuals who differed in their initial behavioral type. Social context, specifically pair-bonding, appears vital for behavioral responses to aggressive signals. While non-bonded animals maintained stable responses, pair-bonding led to an emergent property: convergence in behavioral responses. This convergence can be driven by oxytocin revealing a significant expansion in oxytocin’s effects on behavioral coordination.

Inter-male aggressive signals in weakly electric fish are modulated by monoamines

1987 ◽  
Vol 25 (1) ◽  
pp. 75-81 ◽  
Author(s):  
Leonard Maler ◽  
William G. Ellis
Keyword(s):  
Electric Fish ◽  
Weakly Electric Fish ◽  
Weakly Electric ◽  
Aggressive Signals

Limits to reliability in avian aggressive signals

Behaviour ◽  
2013 ◽  
Vol 150 (9-10) ◽  
pp. 1129-1145 ◽  
Author(s):  
William A. Searcy ◽  
Barbara Ballentine ◽  
Rindy C. Anderson ◽  
Stephen Nowicki
Keyword(s):  
Aggressive Signals

In front of a mirror: visual displays may not be aggressive signals in nocturnal tree frogs

2016 ◽  
Vol 51 (7-8) ◽  
pp. 443-454 ◽  
Author(s):  
Raíssa Furtado ◽  
Rafael Márquez ◽  
Sandra Maria Hartz
Keyword(s):  
Visual Displays ◽  
Tree Frogs ◽  
Aggressive Signals

scholarly journals Why the Static Allometry of Sexually-Selected Traits Is So Variable: The Importance of Function

2019 ◽  
Vol 59 (5) ◽  
pp. 1290-1302 ◽  
Author(s):  
Rafael Lucas Rodríguez ◽  
William G Eberhard
Keyword(s):  
Body Size ◽  
Body Part ◽  
Positive Allometry ◽  
Large Structures ◽  
Sexually Selected Traits ◽  
Body Sizes ◽  
Selected Traits ◽  
Courtship Signals ◽  
Aggressive Signals ◽  
Static Allometry

AbstractSexually-selected traits often show positive static allometry, with large individuals bearing disproportionately large structures. But many other sexually-selected traits show isometry or even negative allometry, with trait size varying relatively little with body size. We recently proposed that the functions of these traits (as aggressive signals, weapons, courtship signals, and contact courtship devices) determine their allometries. Positive allometry is generally favored for aggressive signals because aggressive signals are selected to emphasize body size (and thus fighting prowess). In contrast, the biomechanics of force application in weapons only sometimes select for positive allometry; the content of courtship signals is even less often related to body size; and contact courtship devices are selected to be relatively invariant across body sizes. Here we summarize the arguments in favor of this “functional allometry” hypothesis and expand a comparative test of its predictions. Our results indicate that sexual traits have the allometric slopes predicted by our hypothesis, regardless of which body part bears the structure.

Quiet violence: Savannah Sparrows respond to playback-simulated rivals using low-amplitude songs as aggressive signals

Ethology ◽  
2018 ◽  
Vol 124 (10) ◽  
pp. 724-732 ◽  
Author(s):  
Ines G. Moran ◽  
Stéphanie M. Doucet ◽  
Amy E. M. Newman ◽  
D. Ryan Norris ◽  
Daniel J. Mennill
Keyword(s):  
Low Amplitude ◽  
Savannah Sparrows ◽  
Aggressive Signals

scholarly journals On the evolution of baboon greeting rituals

2019 ◽  
Author(s):  
Federica Dal Pesco ◽  
Julia Fischer
Keyword(s):  
Social Interactions ◽  
Social Systems ◽  
Comprehensive Analysis ◽  
Contest Competition ◽  
Animal Kingdom ◽  
Form And Function ◽  
Trade Offs ◽  
And Function ◽  
Aggressive Signals

To balance the trade-offs of male co-residence, males living in multi-male groups may exchange ritualized greetings. Although these non-aggressive signals are widespread in the animal kingdom, the repertoire described in the genus Papio is exceptional, involving potentially harmful behaviours such as genital fondling. Such greetings are among the most striking male baboon social interactions, yet their function remains disputed. Drawing on the comprehensive analysis from our own research on wild Guinea baboons, combined with a survey of the literature into other baboon species, we review the form and function of male-male ritualized greetings and their relation to the various social systems present in this genus. These ritualized signals differ between species in their occurrence, form, and function. While ritualized greetings are rare in species with the most intense contest competition, the complexity of and risk involved in greeting rituals increase with the degree of male-male tolerance and cooperation. The variety of societies found in this genus, combined with its role as a model for human socioecological evolution, sheds light on the evolution of ritualized behaviour in non-human primates and rituals in humans.

scholarly journals Responses to song playback vary with the vocal performance of both signal senders and receivers

2013 ◽  
Vol 280 (1768) ◽  
pp. 20131401 ◽  
Author(s):  
Dana L. Moseley ◽  
David C. Lahti ◽  
Jeffrey Podos
Keyword(s):  
High Performance ◽  
Animal Species ◽  
Vocal Performance ◽  
Performance Levels ◽  
Mating Signals ◽  
Two Factors ◽  
Melospiza Georgiana ◽  
Low Performance ◽  
Aggressive Signals ◽  
Song Playback

Mating signals of many animal species are difficult to produce and thus should indicate signaler quality. Growing evidence suggests that receivers modulate their behaviour in response to signals with varying performance levels, although little is known about if and how responses are affected by receiver attributes. To explore this topic we conducted two experiments with swamp sparrows, Melospiza georgiana , in which we challenged territorial males with playback of songs with trill rates that were natural, digitally reduced, or digitally elevated (control-, low- and high-performance stimuli, respectively). In our first experiment, we found that males responded more aggressively to control songs than to low-performance stimuli, that low-performance stimuli with the most severe trill-rate reductions elicited the weakest aggressive responses, and that the subjects' own trill rates predicted aggressive responses. In our second experiment, we found that male responses to high-performance stimuli varied significantly, in ways predicted by two factors: the degree to which we had elevated stimulus performance levels of high-performance stimuli, and subjects' own vocal performance levels. Specifically, males were less aggressive towards stimuli for which we had elevated performance levels to higher degrees, and subject males with higher vocal performances themselves responded more aggressively. These findings together offer a novel illustration of how responses to aggressive signals may rely not just on signal attributes, but also on attributes of responding animals themselves.

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