Table 3 Summary table of final models and parameters. ‘x’ represents the interaction terms. Explanatory variables are fixed unless specified otherwise. Colony status: queenless or queenright, worker type: physogastric or normal A. gracilipes
From: Origin, behaviour, and genetics of reproductive workers in an invasive ant
Section | Model and distribution | Response variable | Explanatory variables |
|---|---|---|---|
Dissections of worker’s ovaries of entire colonies | GLM binomial | Presence or absence of mature oocytes | Colony status Worker type |
GLM binomial | Worker type | Colony status | |
Colony observations | GLMM binomial | Whether the colony ever produced males | Whether the colony ever had a queen Maximum number of workers Whether the colony ever had a queen x Max. number of workers Number of days in captivity (random) |
Morphometry and genotyping | LMM | Head width or Weber’s length or wing width or wing length | Male source Colony of origin (random) |
Queen transfer experiment | GLMM binomial | Proportion of normal workers until day 60 | Timea Colony status Timea x Colony status Colony of origin (random) |
GLMM binomial | Proportion of normal workers until day 120 | Timea Colony status Timea x Colony status Colony of origin (random) | |
GLMM binomial | Presence or absence of workers in the foraging area | Worker type Colony status Colony of origin (random) | |
GLMM binomial | Presence absence mature oocytes | Colony status Worker type Colony of origin (random) | |
Aggression tests | CLMM | Maximal aggression score | Colony status Worker type Colony status x Worker type Colony of origin (random) |
GLMM negative binomial | Survival of all three A. gracilipes workers | Colony status Worker type Colony status x Worker type Colony of origin (random) | |
GLMM binomial | Survival of the O. smaragdina worker | Colony status Worker type Colony status x Worker type Colony of origin (random) | |
GLM binomial | Species initiating the fight | Colony status Worker type Colony status x Worker type | |
GLMM binomial | Presence absence of mature oocytes | Colony status Worker type Colony of origin (random) |