Table 6.

Diversification test using diversity-dependent diversification decoupled (DDD) models using genus specific initial net diversification rate, initial extinction rate and carrying capacity parameter.

Package	Function	IST	Model	Arion			Geomalacus			AIC	Δ AIC
				r 0	μ 0	K	r 0	μ 0	K
DDD	dd_KI_ML	yes	r 0A, r 0G, μ 0A, μ 0G, KA, KG	0.61	0.021	22.982	0.823	2.00E-05	9.009	129.72	4.88
DDD	dd_KI_ML	yes	r 0A, r 0G, KA, KG	0.538	‡	23.217	0.828	‡	8.988	125.93	1.08
DDD	dd_KI_ML	yes	r 0 A  ≈  r 0 G, K A, K G	0.616	‡	22.952	0.616	‡	9.003	124.84	0.00
DDD	dd_KI_ML	yes	r 0A, r 0G, KA ≈ KG	0.229	‡	56.12	1.902	‡	56.12	186.47	61.62
DDD	dd_KI_ML	yes	r 0A, r 0G, KA ≈ Inf, KG ≈ Inf	0.169	‡	Inf	0.125	‡	Inf	148.72	23.87
DDD	dd_KI_ML	yes	r 0A ≈ r 0G, KA ≈ Inf, KG ≈ Inf	0.154	‡	Inf	0.154	‡	Inf	147.17	22.33

Bold identifies the best-fit model. AIC’s and the difference in AIC’s with the best model (∆AIC) are shown. IST, incomplete sampling taxa; r ₀A (=λ ₀A − μ₀A), initial net diversification rate for Arion; r ₀G (=λ ₀G − μ₀G), initial net diversification rate for Geomalacus; μ ₀A, the initial extinction rate in Arion; μ ₀G, the initial extinction rate in Geomalacus; μ ₀, the initial extinction rate when applicable; KA, carrying capacity parameter for Arion; KG, carrying capacity parameter for Geomalacus; r ₀ (= λ ₀ − μ₀), initial net diversification rate; ‡ the parameter in the model is fixed to zero.