The fate of intracoelomic acoustic transmitters in Atlantic salmon (Salmo salar) post-smolts and wider considerations for causal factors driving tag retention and mortality in fishes

Lawrence, M. J.; Wilson, B. M.; Reid, G. K.; Hawthorn, C.; English, G.; Black, M.; Leadbeater, S.; McKindsey, C. W.; Trudel, M.

doi:10.1186/s40317-023-00351-0

Animal Biotelemetry

Table 2 Meta-regression fixed effects model estimates comparing tagging and experimental parameters against tag retention and mortality rates in fishes.

From: The fate of intracoelomic acoustic transmitters in Atlantic salmon (Salmo salar) post-smolts and wider considerations for causal factors driving tag retention and mortality in fishes

Model (observations)	Parameter	Estimate	Standard error	z value	P value	CI—lower	CI—upper	Adjusted P value
Tag retention
Full model (k = 42)	Tag length	− 4.42E⁻³	5.26E⁻³	− 0.84	0.40	− 0.0147	0.0059	0.400
	Tag diameter	7.87E⁻³	1.89E⁻²	0.42	0.68	− 0.0291	0.0449	0.939
	Incision size	6.81E⁻³	9.72E⁻³	0.70	0.48	− 0.0122	0.0259	0.527
	Experimental duration	− 5.08E⁻⁴	5.56E⁻⁴	− 0.91	0.36	− 0.0016	0.0006	0.362
	Tag:body mass ratio	− 6.10E⁻²	2.03E⁻²	− 3.00	0.00	− 0.1009	-0.0212	0.003
Tag length (k = 71)	Tag length	− 3.56E⁻³	2.78E⁻³	− 1.28	0.20	− 0.0090	0.0019	0.400
Tag diameter (k = 68)	Tag diameter	− 7.63E⁻⁴	9.91E⁻³	− 0.08	0.94	− 0.0202	0.0187	0.939
Incision size (k = 57)	Incision size	4.02E⁻³	6.35E⁻³	0.63	0.53	− 0.0084	0.0165	0.527
Experimental duration (k = 80)	Experimental duration	− 3.34E⁻⁴	3.28E⁻⁴	− 1.02	0.31	− 0.0010	0.0003	0.362
Tag:body mass ratio (k = 62)	Tag:body mass ratio	− 6.94E⁻²	1.70E⁻²	− 4.08	0.00	− 0.1028	-0.0360	< 0.001
Mortality
Full model (k = 43)	Tag length	− 8.75E⁻³	4.50E⁻³	− 1.94	0.05	− 0.0176	0.0001	0.104
	Tag diameter	4.42E⁻²	1.61E⁻²	2.75	0.01	0.0127	0.0756	0.012
	Incision size	− 1.53E⁻³	8.02E⁻³	− 0.19	0.85	− 0.0173	0.0142	0.849
	Experimental duration	− 7.88E⁻⁶	5.07E⁻⁴	− 0.02	0.99	− 0.0010	0.0010	0.988
	Tag:body mass ratio	− 2.29E⁻³	2.18E⁻²	− 0.10	0.92	− 0.0451	0.0405	0.917
Tag length (k = 80)	Tag length	− 2.47E⁻⁴	1.78E⁻³	− 0.14	0.89	− 0.0037	0.0032	0.890
Tag diameter (k = 77)	Tag diameter	6.91E⁻³	7.32E⁻³	0.94	0.35	− 0.0074	0.0213	0.346
Incision size (k = 60)	Incision size	− 2.08E⁻³	7.38E⁻³	− 0.28	0.78	− 0.0165	0.0124	0.849
Experimental duration (k = 94)	Experimental duration	− 1.83E⁻⁵	2.13E⁻⁴	− 0.09	0.93	− 0.0004	0.0004	0.988
Tag:body mass ratio (k = 67)	Tag:body mass ratio	3.56E⁻³	1.49E⁻²	0.24	0.81	− 0.0256	0.0327	0.917

The term ‘Full model’ represents a meta-regression containing all fixed effects, while subsequent models examined a single fixed effect against the response variable. Meta-regressions were conducted using proportional data transformed using Freeman–Tukey double-arcsine transformations. Statistical significance was accepted at α = 0.05 with P values being corrected for multiple comparisons using a Benjamini–Hochberg correction. Significant terms are bolded in the table. k values represent the number of observations for a specific model

Back to article page

ISSN: 2050-3385

Contact us

Submission enquiries: journalsubmissions@springernature.com