Costs of Reproduction in the Wild: Path Analysis of Natural Selection and Experimental Tests of Causation

Evolution ◽  
1996 ◽  
Vol 50 (3) ◽  
pp. 1299 ◽  
Author(s):  
Barry Sinervo ◽  
Dale F. DeNardo
Keyword(s):  
Natural Selection ◽  
Path Analysis ◽  
Experimental Tests ◽  
Costs Of Reproduction ◽  
In The Wild

Natural selection in the wild

2000 ◽  
Vol 15 (8) ◽  
pp. 306-307 ◽  
Author(s):  
Austin Burt
Keyword(s):  
Natural Selection ◽  
In The Wild

Natural selection in the wild

1987 ◽  
Vol 49 (5) ◽  
pp. 634-638
Author(s):  
G WILKINSON
Keyword(s):  
Natural Selection ◽  
In The Wild

scholarly journals Predators as Agents of Selection and Diversification

Diversity ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 415
Author(s):  
Jerald B. Johnson ◽  
Mark C. Belk
Keyword(s):  
Natural Selection ◽  
Empirical Evidence ◽  
Mortality Rates ◽  
Predator Species ◽  
Natural Systems ◽  
Evolutionary Diversification ◽  
Multiple Predator Species ◽  
In The Wild ◽  
Taxonomic Groups ◽  
Future Work

Predation is ubiquitous in nature and can be an important component of both ecological and evolutionary interactions. One of the most striking features of predators is how often they cause evolutionary diversification in natural systems. Here, we review several ways that this can occur, exploring empirical evidence and suggesting promising areas for future work. We also introduce several papers recently accepted in Diversity that demonstrate just how important and varied predation can be as an agent of natural selection. We conclude that there is still much to be done in this field, especially in areas where multiple predator species prey upon common prey, in certain taxonomic groups where we still know very little, and in an overall effort to actually quantify mortality rates and the strength of natural selection in the wild.

scholarly journals Risk of social colours in an agamid lizard: implications for the evolution of dynamic signals

2019 ◽  
Vol 15 (5) ◽  
pp. 20190207 ◽  
Author(s):  
Madhura S. Amdekar ◽  
Maria Thaker
Keyword(s):  
Natural Selection ◽  
Social Interactions ◽  
Predation Risk ◽  
Colour Pattern ◽  
Male Aggression ◽  
Visual Systems ◽  
In The Wild ◽  
Predation Costs ◽  
Colour Patterns ◽  
Ecological Cost

The forces of sexual and natural selection are typically invoked to explain variation in colour patterns of animals. Although the benefits of conspicuous colours for social signalling are well documented, evidence for their ecological cost, especially for dynamic colours, remains limited. We examined the riskiness of colour patterns of Psammophilus dorsalis , a species in which males express distinct colour combinations during social interactions. We first measured the conspicuousness of these colour patterns on different substrates based on the visual systems of conspecifics and predators (bird, snake, canid) and then quantified actual predation risk on these patterns using wax/polymer lizard models in the wild. The black and red male state exhibited during courtship was the most conspicuous to all visual systems, while the yellow and orange male aggression state and the brown female colour were least conspicuous. Models bearing the courtship colour pattern experienced the highest predator attacks, irrespective of the substrate they were placed on. Thus, social colours of males are not only conspicuous but also risky. Using physiological colours to shift in and out of conspicuous states may be an effective evolutionary solution to balance social signalling benefits with predation costs.

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