Trends in Ecology & Evolution
Visualizing and quantifying natural selection
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Cited by (510)
Climate fluctuations influence variation in group size in a cooperative bird
2022, Current BiologyCitation Excerpt :Our study period (2007–2019) encompassed two El Niño episodes, two La Niña episodes, and 7 years of weak to moderate ENSO conditions as defined by NOAA.29 We used a multivariate modeling approach to ask how several candidate predictors (including climate, group size, and interactions between climate and group size) affected nest predation risk, nestling survival, and overall individual reproductive output, and we used linear regression of group size on individual reproductive output to estimate directional selection coefficients for two aspects of group size (the number of breeding pairs and the number of non-breeding helpers) for each year of the study.7,30 We found that the distribution of group sizes was stable across years and did not vary with climate, despite variation in annual precipitation (Figure S1).
Comparative sexual selection in field and laboratory in a guild of sepsid dung flies
2021, Animal BehaviourCitation Excerpt :We performed a separate Procrustes transformation for each species and trait and calculated fore femur and wing centroid size as our estimate of the overall structural size. We calculated separate standardized univariate linear (βuni) and corresponding nonlinear (γuni) selection coefficients (here mating differentials) for fore femur size and wing size (following Lande & Arnold, 1983; Arnold & Wade, 1984a,b; Brodie et al., 1995), separately for field and laboratory. Corresponding bivariate selection coefficients were also calculated, but because leg and wing (centroid) size of an individual are highly collinear these are not reliable and hence not reported (see Baur et al., 2020).
Effects of density on the strength of sexual selection in the laboratory and in nature
2023, Biological Journal of the Linnean Society