Multivariate analysis of morphology, behaviour, growth and developmental timing in hybrids brings new insights into the divergence of sympatric Arctic charr morphs

Table 3 Formula and results of the regression on Procrustes residuals of the head shapes in the specimen reared individually

Formula
Procrustes coordinates ~ log₁₀(size) + Cross/Family + log₁₀(size) × Cross/Family + Age × Coss/Family
Table of variance
Effects	d.f	SS	R²	Z	p
Log(size)	1	5.17	0.62	7.80	< 0.01
Cross type	2	0.06	0.01	− 1.18	0.88
Age	3	0.63	0.07	9.47	< 0.01
Cross type × Family	5	0.25	0.03	8.07	< 0.01
Cross type × log(size)	2	0.02	0.00	− 2.64	1.00
Cross type × Age	6	0.07	0.01	− 3.09	1.00
Cross type × log(size) × Family	5	0.06	0.01	4.08	< 0.01
Cross type × Age × Family	15	0.10	0.01	3.63	< 0.01
Residuals	626	2.06	0.24	–	–
Total	665	8.40	–	–	–

Families are nested within cross type. Age: Sampling time point, Size: Centroid size

ISSN: 2730-7182