scholarly journals Resource-dependent nuptial feeding in Panorpa vulgaris: an honest signal for male quality

2006 ◽  
Vol 17 (4) ◽  
pp. 628-632 ◽  
Author(s):  
S. Engels ◽  
K. P. Sauer
Keyword(s):  
Male Quality ◽  
Honest Signal ◽  
Nuptial Feeding

Dawn song of the eastern kingbird: an honest signal of male quality?

2008 ◽  
Vol 75 (3) ◽  
pp. 1075-1084 ◽  
Author(s):  
Michael T. Murphy ◽  
Karen Sexton ◽  
Amy C. Dolan ◽  
Luke J. Redmond
Keyword(s):  
Male Quality ◽  
Honest Signal ◽  
Dawn Song ◽  
Eastern Kingbird

scholarly journals Drosophila Sexual Attractiveness in Older Males Is Mediated by Their Microbiota

2020 ◽  
Vol 8 (2) ◽  
pp. 168
Author(s):  
Chloe Heys ◽  
Anne Lizé ◽  
Zenobia Lewis ◽  
Tom A. R. Price
Keyword(s):  
Fruit Fly ◽  
Female Preference ◽  
Sexual Attractiveness ◽  
Extreme Temperatures ◽  
Male Quality ◽  
Older Individuals ◽  
Honest Signal ◽  
Male Attractiveness ◽  
Naturally Occurring ◽  
Older Males

Age is well known to be a basis for female preference of males. However, the mechanisms underlying age-based choices are not well understood, with several competing theories and little consensus. The idea that the microbiota can affect host mate choice is gaining traction, and in this study we examine whether the male microbiota influences female preference for older individuals in the fruit fly Drosophila pseudoobscura. We find that an intact microbiota is a key component of attractiveness in older males. However, we found no evidence that this decrease in older male attractiveness was simply due to impaired microbiota generally reducing male quality. Instead, we suggest that the microbiota underlies an honest signal used by females to assess male age, and that impaired microbiota disrupt this signal. This suggests that age-based preferences may break down in environments where the microbiota is impaired, for example when individuals are exposed to naturally occurring antibiotics, extreme temperatures, or in animals reared in laboratories on antibiotic supplemented diet.

scholarly journals Nest-Building Effort is Not An Indicator of Male Quality In Bonelli’s Eagles, Aquila fasciata

2021 ◽  
Author(s):  
José E. Martínez ◽  
Íñigo Zuberogoitia ◽  
José F. Calvo ◽  
Mario Álvarez ◽  
Antoni Margalida
Keyword(s):  
Breeding Success ◽  
Egg Laying ◽  
Nest Building ◽  
Male Quality ◽  
Honest Signal ◽  
Parental Quality ◽  
Relative Contribution ◽  
Sex Type ◽  
Aquila Fasciata ◽  
Building Behaviour

Abstract Raptors often use a variety of materials to build their nests (natural, such as branches, but also non-natural objects), presumably due to their insulating properties, their suitability to advertise occupancy of the nest, and to decrease pathogen and parasite loads. The amount of branches used in a nest is an indicator of parental quality and is often associated with increased breeding success. However, in raptors where both sexes collaborate in nest construction, it is unclear whether the effort expended by males (taking the amount of material carried to the nest as the potential predictor) could constitute an honest signal of parental quality to female conspecifics. We examined data on sex, type of material brought to the nest, breeding experience, timing, and nest-building investment prior to egg-laying from 32 identifiable Bonelli’s Eagles (Aquila fasciata) during the pre-laying period to investigate the relative contribution of the sexes to the amount of nest material gathered. We asked: (1) whether the nest-building investment of males could provide information to the females about their quality; and (2) whether the amount of material delivered to the nest by the male was related to breeding success. Despite the considerable investment of males in nest-building during the pre-laying period, our results indicate that this effort is not a consistent indicator of male quality to the female. Therefore, male nest-building behaviour and investment by Bonelli’s Eagles cannot be considered as an extended expression of their phenotype (an extended phenotypic signal). Nest-building behaviour by males in the early and late stages of nest-building, and the fact that males were not significantly more active builders, are discussed in the contexts of signaling nest occupancy to conspecifics and competitors, the decrease of parasite loads, and the strengthening of the pair-bond during the pre-laying period.

scholarly journals Dominance is not always an honest signal of male quality, but females may be able to detect the dishonesty

2013 ◽  
Vol 9 (1) ◽  
pp. 20121002 ◽  
Author(s):  
Mari Pölkki ◽  
Raine Kortet ◽  
Ann Hedrick ◽  
Markus J. Rantala
Keyword(s):  
Immune System ◽  
Mating Success ◽  
Dominance Rank ◽  
Good Condition ◽  
Male Competition ◽  
Male Dominance ◽  
Field Cricket ◽  
Male Quality ◽  
Honest Signal ◽  
Gryllus Integer

Females prefer dominant males as mating partners in numerous species. Male dominance rank is considered as an honest signal of male quality, because only healthy males in good condition are thought to be able to win fights with other males. Here, we tested whether activation of the immune system influences the success of males in male–male competition and mating in the field cricket, Gryllus integer . We activated the immune system of males with a nylon monofilament (to mimic a parasitoid larva), and arranged fights between male pairs to assess male dominance and associated mating success. Activation of the immune system with nylon monofilament substantially enhanced the fighting success of males during male–male competition but had no effect on mating success. However, sham-manipulation (a wound only) did not have any effect on fighting success although females mated more often with dominant males. Our study suggests that when male crickets meet an apparent survival threat they may behave more dominantly, probably owing to terminal investment. Male success during male–male competition is not always an honest signal of males’ quality, but females may be able to detect this dishonesty.

scholarly journals Is Sexual Ornamentation an Honest Signal of Male Quality in the Chinese Grouse (Tetrastes sewerzowi)?

PLoS ONE ◽  
2013 ◽  
Vol 8 (12) ◽  
pp. e82972 ◽  
Author(s):  
Chen Yang ◽  
Jie Wang ◽  
Yun Fang ◽  
Yue-Hua Sun
Keyword(s):  
Male Quality ◽  
Honest Signal ◽  
Sexual Ornamentation ◽  
Chinese Grouse

Communication of Male Quality in Owl Hoots

2007 ◽  
Vol 169 (4) ◽  
pp. 552
Author(s):  
Loïc A. Hardouin ◽  
Reby ◽  
Bavoux ◽  
Burneleau ◽  
Bretagnolle
Keyword(s):  
Male Quality

Duchenne Smiles as Honest Signals of Chronic Positive Mood

2021 ◽  
pp. 174569162095983
Author(s):  
Kennon M. Sheldon ◽  
Mike Corcoran ◽  
Melanie Sheldon
Keyword(s):  
Positive Emotion ◽  
Positive Mood ◽  
Honest Signal ◽  
Happy People ◽  
Honest Signals ◽  
Neutral Mood ◽  
Duchenne Smiles ◽  
Positivity Offset ◽  
Behavioral Influences ◽  
Better Than

Chronic positive mood (CPM) has been shown to confer a wide variety of social, functional, and health benefits. Some researchers have argued that humans evolved to feel CPM, which explains why most people report better than neutral mood (the “positivity offset bias”) and why particularly happy people have particularly good outcomes. Here, we argue that the Duchenne smile evolved as an honest signal of high levels of CPM, alerting others to the psychological fitness of the smiler. Duchenne smiles are honest because they express felt positive emotion, making it difficult for unhappy people to produce them. Duchenne smiles enable happy people to signal and cooperate with one another, boosting their advantages. In our literature review, we found (a) that not all Duchenne smiles are “honest,” although producing them in the absence of positive emotion is difficult and often detectable, and (b) that the ability to produce and recognize Duchenne smiles may vary somewhat by a person’s cultural origin. In the final section of the article, we consider behavioral influences on CPM, reviewing research showing that engaging in eudaimonic activity reliably produces CPM, as posited by the eudaimonic-activity model. This research suggests that frequent Duchenne smiling may ultimately signal eudaimonic personality as well as CPM.

scholarly journals Chest beats as an honest signal of body size in male mountain gorillas (Gorilla beringei beringei)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Edward Wright ◽  
Sven Grawunder ◽  
Eric Ndayishimiye ◽  
Jordi Galbany ◽  
Shannon C. McFarlin ◽  
...  
Keyword(s):  
Body Size ◽  
Competitive Ability ◽  
Dominance Rank ◽  
Male Body ◽  
Honest Signal ◽  
Sexual Competition ◽  
Mountain Gorillas ◽  
Temporal Characteristics ◽  
Gorilla Beringei Beringei ◽  
Vocal Signals

AbstractAcoustic signals that reliably indicate body size, which usually determines competitive ability, are of particular interest for understanding how animals assess rivals and choose mates. Whereas body size tends to be negatively associated with formant dispersion in animal vocalizations, non-vocal signals have received little attention. Among the most emblematic sounds in the animal kingdom is the chest beat of gorillas, a non-vocal signal that is thought to be important in intra and inter-sexual competition, yet it is unclear whether it reliably indicates body size. We examined the relationship among body size (back breadth), peak frequency, and three temporal characteristics of the chest beat: duration, number of beats and beat rate from sound recordings of wild adult male mountain gorillas. Using linear mixed models, we found that larger males had significantly lower peak frequencies than smaller ones, but we found no consistent relationship between body size and the temporal characteristics measured. Taken together with earlier findings of positive correlations among male body size, dominance rank and reproductive success, we conclude that the gorilla chest beat is an honest signal of competitive ability. These results emphasize the potential of non-vocal signals to convey important information in mammal communication.

scholarly journals Partitioning the effects of mating and nuptial feeding on the microbiome in gift-giving insects

2017 ◽  
Vol 9 (2) ◽  
pp. 104-112 ◽  
Author(s):  
Chad C. Smith ◽  
Robert B. Srygley ◽  
Emma I. Dietrich ◽  
Ulrich G. Mueller
Keyword(s):  
Gift Giving ◽  
Nuptial Feeding
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