scholarly journals Correlated evolution of distinct signals associated with increased social selection in female white‐shouldered fairywrens

2021 ◽  
Author(s):  
John Anthony Jones ◽  
Karan J. Odom ◽  
Ian R. Hoppe ◽  
Doka Nason ◽  
Serena Ketaloya ◽  
...  
Keyword(s):  
Social Selection ◽  
Correlated Evolution

scholarly journals Correlated evolution of distinct signals associated with increased social selection in female white-shouldered fairywrens

2021 ◽  
Author(s):  
John Jones ◽  
Karan Odom ◽  
Ian Hoppe ◽  
Doka Nason ◽  
Serena Ketaloya ◽  
...  
Keyword(s):  
Phenotypic Variation ◽  
Social Dominance ◽  
Social Selection ◽  
Competitive Pressure ◽  
Correlated Evolution ◽  
Scientific Attention ◽  
Female Specific ◽  
And Behavior ◽  
Two Populations ◽  
Male Coloration

Conspicuous female signals have recently received substantial scientific attention, but the degree to which female-specific selection drives their evolution remains unclear. Species that express female-specific phenotypic variation among populations represent a useful opportunity to address this knowledge gap. White-shouldered fairywrens (Malurus alboscapulatus) are tropical songbirds with a well-resolved phylogeny where female, but not male, coloration varies allopatrically across subspecies. We explored how four distinct signaling modalities, each putatively associated with increased social selection, are expressed in two populations that vary in competitive pressure on females. Females in a derived subspecies (M. a. moretoni) have evolved more ornamented plumage, more complex vocalizations, and shorter tails (a signal of social dominance) relative to an ancestral subspecies (M. a. lorentzi) with drab females. Moreover, in response to simulated territorial intrusions broadcasting female song, female M. a. moretoni are more aggressive and more coordinated with their mate in both movement and vocalizations. These results suggest that correlated phenotypic shifts in female color, morphology, song complexity, and behavior may have occurred in response to changes in social selection, consistent with the idea that female-specific selection has driven the evolution of these signals.

scholarly journals Evaluation of the interactionist model of socioeconomic status and problem behavior: A developmental cascade across generations

2010 ◽  
Vol 22 (3) ◽  
pp. 695-713 ◽  
Author(s):  
Monica J. Martin ◽  
Rand D. Conger ◽  
Thomas J. Schofield ◽  
Shannon J. Dogan ◽  
Keith F. Widaman ◽  
...  
Keyword(s):  
Socioeconomic Status ◽  
Problem Behavior ◽  
Human Development ◽  
Problem Behaviors ◽  
Family Stress ◽  
Individual Characteristics ◽  
Social Selection ◽  
Social Causation ◽  
Adolescent Problem Behavior ◽  
The Social

AbstractThe current multigenerational study evaluates the utility of the interactionist model of socioeconomic influence on human development (IMSI) in explaining problem behaviors across generations. The IMSI proposes that the association between socioeconomic status (SES) and human development involves a dynamic interplay that includes both social causation (SES influences human development) and social selection (individual characteristics affect SES). As part of the developmental cascade proposed by the IMSI, the findings from this investigation showed that Generation 1 (G1) adolescent problem behavior predicted later G1 SES, family stress, and parental emotional investments, as well as the next generation of children's problem behavior. These results are consistent with a social selection view. Consistent with the social causation perspective, we found a significant relation between G1 SES and family stress, and in turn, family stress predicted Generation 2 (G2) problem behavior. Finally, G1 adult SES predicted both material and emotional investments in the G2 child. In turn, emotional investments predicted G2 problem behavior, as did material investments. Some of the predicted pathways varied by G1 parent gender. The results are consistent with the view that processes of both social selection and social causation account for the association between SES and human development.

Correlated evolution between coloration and ambush site in predators with visual prey lures

Evolution ◽  
2017 ◽  
Vol 71 (8) ◽  
pp. 2010-2021 ◽  
Author(s):  
Felipe M. Gawryszewski ◽  
Miguel A. Calero-Torralbo ◽  
Rosemary G. Gillespie ◽  
Miguel A. Rodríguez-Gironés ◽  
Marie E. Herberstein
Keyword(s):  
Correlated Evolution

scholarly journals Genome size correlates with reproductive fitness in seed beetles

2015 ◽  
Vol 282 (1815) ◽  
pp. 20151421 ◽  
Author(s):  
Göran Arnqvist ◽  
Ahmed Sayadi ◽  
Elina Immonen ◽  
Cosima Hotzy ◽  
Daniel Rankin ◽  
...  
Keyword(s):  
Life History ◽  
Natural Selection ◽  
Genome Size ◽  
Evolutionary Biology ◽  
Large Scale ◽  
Life History Traits ◽  
Single Species ◽  
Reproductive Fitness ◽  
Correlated Evolution ◽  
Seed Beetles

The ultimate cause of genome size (GS) evolution in eukaryotes remains a major and unresolved puzzle in evolutionary biology. Large-scale comparative studies have failed to find consistent correlations between GS and organismal properties, resulting in the ‘ C -value paradox’. Current hypotheses for the evolution of GS are based either on the balance between mutational events and drift or on natural selection acting upon standing genetic variation in GS. It is, however, currently very difficult to evaluate the role of selection because within-species studies that relate variation in life-history traits to variation in GS are very rare. Here, we report phylogenetic comparative analyses of GS evolution in seed beetles at two distinct taxonomic scales, which combines replicated estimation of GS with experimental assays of life-history traits and reproductive fitness. GS showed rapid and bidirectional evolution across species, but did not show correlated evolution with any of several indices of the relative importance of genetic drift. Within a single species, GS varied by 4–5% across populations and showed positive correlated evolution with independent estimates of male and female reproductive fitness. Collectively, the phylogenetic pattern of GS diversification across and within species in conjunction with the pattern of correlated evolution between GS and fitness provide novel support for the tenet that natural selection plays a key role in shaping GS evolution.

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