Tag attachment success can be temperature dependent: a case study of the chub mackerel Scomber japonicus

Table 2 Comparison of Cox regression models that include and do not include the effect of water temperature

Tagging component	Parameter estimates		SE	df	χ ²	P
Model A
Tag presence (Implantation or Untagged)	Implantation	1.148	0.421	1	8.277	0.004*
Water temperature condition (warm or cold)	Warm	2.044	0.723	1	10.550	0.001*
Duration of tag deployments (s)		−0.007	0.006	1	1.781	0.182
Duration of anaesthesia (s)		0.003	0.003	1	1.544	0.214
Body mass (g)		−0.003	0.004	1	0.632	0.426
Model B
Tag presence (Implantation or untagged)	Implantation	0.304	0.291	1	1.128	0.288
Duration of tag deployments (s)		0.004	0.004	1	1.332	0.248
Duration of anaesthesia (s)		−0.004	0.002	1	7.509	0.006*
Body mass (g)		−0.005	0.004	1	1.451	0.228