Table 1 Worthless gifts in natural populations: ecological and individual effects. Ranked (based on AICc) candidate models with combinations of the fixed effects of ecological (prey number = “Prey”, population = “Pop”) and individual (males and female sizes respectively “Mal size” and “Fem size”) variables on the probability of males producing worthless gifts. All models included the dates generated from a combination of month and year (2015 and 2016) as random effects. Significant p values are in bold. Data in bold indicate the two simplest and most parsimonious models
From: Stressful environments favor deceptive alternative mating tactics to become dominant
No | Fixed effects | k | AICc | ΔAICc | Weight | Log- likelihoods | Cumulative weight |
|---|---|---|---|---|---|---|---|
1 | Pop | 3 | 45.164 | – | 0.4848 | − 18.0819 | 0.485 |
2 | Pop + Prey | 4 | 46.446 | 1.282 | 0.2554 | − 16.3657 | 0.740 |
3 | Pop + Fem size | 4 | 48.053 | 2.889 | 0.1143 | − 17.1694 | 0.854 |
4 | Pop + Mal size | 4 | 49.848 | 4.684 | 0.0466 | − 18.0669 | 0.901 |
5 | Pop + Mal size + Fem size | 5 | 50.345 | 5.181 | 0.0363 | − 15.1725 | 0.937 |
6 | Pop + Prey + Mal size | 5 | 52.329 | 7.166 | 0.0135 | − 16.1647 | 0.951 |
7 | Pop + Prey + (Pop × Prey) | 5 | 52.594 | 7.430 | 0.0118 | − 16.2969 | 0.963 |
8 | Pop + Prey + Fem size | 5 | 52.648 | 7.484 | 0.0115 | − 16.3240 | 0.974 |
9 | Pop + Fem size + . (Pop × Fem size) | 5 | 53.978 | 8.814 | 0.0059 | − 16.9891 | 0.980 |
10 | Mal size + Fem size + (Mal size × Fem size) | 5 | 53.994 | 8.830 | 0.0059 | − 16.9968 | 0.986 |
11 | Prey + Fem size | 4 | 54.392 | 9.228 | 0.0048 | − 20.3390 | 0.991 |
12 | Prey + Mal size | 4 | 55.501 | 10.337 | 0.0028 | − 20.8932 | 0.994 |
13 | Pop + Mal size + (Pop × Mal size) | 5 | 55.732 | 10.568 | 0.0025 | − 17.8660 | 0.996 |
14 | Fem size | 3 | 56.675 | 11.512 | 0.0015 | − 23.8377 | 0.998 |
15 | Prey + Mal size + (Prey × Mal size) | 5 | 57.970 | 12.806 | 0.0008 | − 18.9851 | 0.998 |
16 | Prey + Fem size + (Prey × Fem size) | 5 | 58.394 | 13.231 | 0.0006 | − 19.1972 | 0.999 |
17 | Pop + Prey + Mal size + Fem size | 6 | 58.801 | 13.637 | 0.0005 | − 15.0006 | 1.000 |
18 | Prey + Mal size + Fem size | 5 | 60.437 | 15.273 | 0.0002 | − 20.2185 | 1.000 |
19 | Mal size + Fem size | 4 | 60.519 | 15.355 | 0.0002 | − 23.4025 | 1.000 |
20 | Mal size | 3 | 64.442 | 19.278 | 0.0000 | − 27.7208 | 1.000 |
21 | Prey | 3 | 75.821 | 30.657 | 0.0000 | − 33.4106 | 1.000 |
22 | Null | 2 | 90.633 | 45.469 | 0.0000 | − 42.6499 | 1.000 |