espèce (1) marqueur (1) plomb (1) travail (1) insecte (1) évolution (1) Colonies (1) Reproduction (1) Costs (1) Vertebrates (1) Species (1) Reproduction (1) Weight loss (1) Population genetics (1) Population (1) Masses (1) Life (1) Lead (1) Insects (1) Insect societies (1) Hypothesis (1) Genetic load (1) Forecasting (1) Evolution (1) Division (1) Colonies (1) Molecular evolution (1) Organisms (1) Adaptations (1) Adaptations (1)