Ontogenetic plasticity in cranial morphology is associated with a change in the food processing behavior in Alpine newts

Table 2 Statistical analysis of intraoral food processing kinematics in I. alpestris

Kinematic variable	Kinematic parameter	All Morphotypes		LLM vs. MMM		LLM vs. PMM		MMM vs. PMM
Kinematic variable	Kinematic parameter	Kruskal-Wallis H	p-value	Mann-Whitney U	p-value	Mann-Whitney U	p-value	Mann-Whitney U	p-value
Gape	Opening	78.08	0.00*	−21.42	0.32	−80.09	0.00*	−58.67	0.00*
	Closure	79.09	0.00*	−17.58	0.55	−78.61	0.00*	−61.03	0.00*
	Opening duration	44.82	0.00*	−57.24	0.00*	−73.85	0.00*	−16.61	0.23
	Closure duration	30.18	0.00*	60.29	0.00*	59.85	0.00*	−0.43	1.00
	Closure acceleration	17.15	0.00*	51.24	0.00*	22.12	0.12	−29.12	0.00*
	Open-close duration	48.69	0.00*	−61.43	0.00*	−77.14	0.00*	−15.72	0.28
	Cycle duration	3.56	1.00	n/a	n/a	n/a	n/a	n/a	n/a
Vertical hyobranchial movement	Elevation	32.10	0.00*	−10.04	1.00	−49.48	0.00*	−39.45	0.00*
	Depression	64.27	0.00*	−18.06	0.52	−71.98	0.00*	−53.92	0.00*
	Elevation duration	18.37	0.00*	−49.55	0.00*	−45.79	0.00*	3.76	1.00
	Depression duration	33.78	0.00*	70.21	0.00*	23.89	0.09	−46.32	0.00*
	Cycle duration	5.22	0.88	n/a	n/a	n/a	n/a	n/a	n/a

Statistical analysis was calculated using Kruskal-Wallis 1-way ANOVA and only performed on parameters present in all morphotypes. P-values were Bonferroni adjusted to account for multiple testing; significant p-values are indicated by asterisks

ISSN: 1742-9994