Unfavourable environment limits social conflict in Yuhina brunneiceps

Shen, Sheng‐Feng; Vehrencamp, Sandra L.; Johnstone, Rufus A.; Chen, Hsiang-Ching; Chan, Shih-Fan; Liao, Wen-Yi; Lin, Kai-Yin; Yuan, Hsiao‐Wei

doi:10.1038/ncomms1894

Cited by 45 publications

(33 citation statements)

References 49 publications

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“…Previous research has propounded the importance of ecology in social evolution and called for a deeper integration of ecological factors in social theory (69)(70)(71)(72)(73). Further to this claim, we suggest that ecological stressors could impact social evolution in microbes and in multicellular taxa more generally.…”

Section: Discussionmentioning

confidence: 86%

Antibiotic stress selects against cooperation in the pathogenic bacterium Pseudomonas aeruginosa

Vasse

Noble

Akhmetzhanov

et al. 2017

Proc. Natl. Acad. Sci. U.S.A.

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Cheats are a pervasive threat to public goods production in natural and human communities, as they benefit from the commons without contributing to it. Although ecological antagonisms such as predation, parasitism, competition, and abiotic environmental stress play key roles in shaping population biology, it is unknown how such stresses generally affect the ability of cheats to undermine cooperation. We used theory and experiments to address this question in the pathogenic bacterium, Pseudomonas aeruginosa. Although public goods producers were selected against in all populations, our competition experiments showed that antibiotics significantly increased the advantage of nonproducers. Moreover, the dominance of nonproducers in mixed cultures was associated with higher resistance to antibiotics than in either monoculture. Mathematical modeling indicates that accentuated costs to producer phenotypes underlie the observed patterns. Mathematical analysis further shows how these patterns should generalize to other taxa with public goods behaviors. Our findings suggest that explaining the maintenance of cooperative public goods behaviors in certain natural systems will be more challenging than previously thought. Our results also have specific implications for the control of pathogenic bacteria using antibiotics and for understanding natural bacterial ecosystems, where subinhibitory concentrations of antimicrobials frequently occur.evolution | cooperation | antibiotics | social behavior | resistance P ublic goods production is a characteristic of a diverse range of taxa, from microbes to humans (1-3). Explaining the persistence of this costly behavior is challenging, because cheats can exploit the commons without contributing. Kin selection theory has proven to be a successful framework for addressing this question, with the central prediction that cooperation is favored by sufficient benefits to, and positive assortment between, cooperators (4-8). For example, recent study in experimental bacterial populations has elucidated mechanisms such as assortment emerging from limited or budding dispersal (9, 10) and kin discrimination (11, 12) that are consistent with kin selection fostering cooperative behaviors (e.g., refs. 8 and 13). However, despite this accumulating consensus, little is known about how social populations respond to differences and variation in abiotic and biotic components of their environment. In particular, it is unclear how ecological antagonisms affect the ability of cheats to invade cooperator communities.Cooperation can be affected by stress directly through differential selection on cooperative phenotypes (14, 15), or by inducing specific plastic behaviors (16-22), especially when cooperation leads to increased stress resistance. However, in the absence of a direct benefit of the cooperative behavior against stress, the ecological and evolutionary outcomes of the interactions between nondefensive public goods and stress responses are less clear and are potentially complex. Cooperation may be infl...

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Section: Discussionmentioning

confidence: 86%

Antibiotic stress selects against cooperation in the pathogenic bacterium Pseudomonas aeruginosa

Vasse

Noble

Akhmetzhanov

et al. 2017

Proc. Natl. Acad. Sci. U.S.A.

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“…Third, environmental factors are known to influence complex social behavior in vertebrates (31)(32)(33). More specifically, demanding environmental conditions imposing higher costs of living, such as low food supply or harsh and unpredictable climates, should promote parental cooperation (34-36) and limit social conflict (37), and this idea has been recently backed by extensive modeling (38,39). Although previous tests of these hypotheses provided important insights into the potential drivers of parental cooperation, no study has yet tested all three hypotheses across a broad range of taxa and assessed their relative importance.…”

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confidence: 99%

The evolution of parental cooperation in birds

Remeš

Freckleton

Tökölyi

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

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Parental care is one of the most variable social behaviors and it is an excellent model system to understand cooperation between unrelated individuals. Three major hypotheses have been proposed to explain the extent of parental cooperation: sexual selection, social environment, and environmental harshness. Using the most comprehensive dataset on parental care that includes 659 bird species from 113 families covering both uniparental and biparental taxa, we show that the degree of parental cooperation is associated with both sexual selection and social environment. Consistent with recent theoretical models parental cooperation decreases with the intensity of sexual selection and with skewed adult sex ratios. These effects are additive and robust to the influence of life-history variables. However, parental cooperation is unrelated to environmental factors (measured at the scale of whole species ranges) as indicated by a lack of consistent relationship with ambient temperature, rainfall or their fluctuations within and between years. These results highlight the significance of social effects for parental cooperation and suggest that several parental strategies may coexist in a given set of ambient environment.

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“…), or Taiwan yuhinas ( Yuhina brunneiceps , Shen et al. ), as well as species with facultatively polygyneous or polygynandrous mating systems such as dunnocks ( Prunella modularis , Davies ), pukeko ( Porphyrio porphyrio , Jamieson ), or waterbuck ( Kobus ellipsiprymnus , Wirtz ). In most of these species, the precise relationship between the demographic factors emphasized by our model and the type of social system warrants further examination.…”

Section: Discussionmentioning

confidence: 99%

“…There are many more species of vertebrates in which several unrelated individuals can share a communal territory, examples include several species of cichlid fish (Taborsky 2001), communally breeding birds such as guira cuckoos (Guira guira, Quinn et al 1994), or Taiwan yuhinas (Yuhina brunneiceps, Shen et al 2012), as well as species with facultatively polygyneous or polygynandrous mating systems such as dunnocks (Prunella modularis, Davies 1992), pukeko (Porphyrio porphyrio, Jamieson 1997), or waterbuck (Kobus ellipsiprymnus, Wirtz 1981). In most of these species, the precise relationship between the demographic factors emphasized by our model and the type of social system warrants further examination.…”

Section: Discussionmentioning

confidence: 99%

Facing the crowd: intruder pressure, within‐group competition, and the resolution of conflicts over group‐membership

Port

Johnstone

2013

Ecology and Evolution

Self Cite

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Recent theory in social evolution has been mainly concerned with competition and cooperation within social groups of animals and their impact on the stability of those groups. Much less attention has been paid to conflicts arising as a result of solitary floaters (outsiders) attempting to join groups of established residents (insiders). We model such conflicts over group-membership using a demographically explicit approach in which the rates of births and deaths in a population determine the availability of group-vacancies and the number of floaters competing over these vacancies. We find that the outcome of within-group competition, reflected in the partitioning of reproduction among group members, exerts surprisingly little influence on the resolution of insider-outsider conflict. The outcome of such conflict is also largely unaffected by differences in resource holding potential between insiders and outsiders. By contrast, whether or not groups form is mainly determined by demographic factors (variation in vital rates such as fecundity and mortality) and the resulting population dynamics. In particular, at high floater densities territory defense becomes too costly, and groups form because insiders give in to the intruder pressure imposed on them by outsiders. We emphasize the importance of insider-outsider conflicts in social evolution theory and highlight avenues for future research.

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Unfavourable environment limits social conflict in Yuhina brunneiceps

Cited by 45 publications

References 49 publications

Antibiotic stress selects against cooperation in the pathogenic bacterium Pseudomonas aeruginosa

Antibiotic stress selects against cooperation in the pathogenic bacterium Pseudomonas aeruginosa

The evolution of parental cooperation in birds

Facing the crowd: intruder pressure, within‐group competition, and the resolution of conflicts over group‐membership

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