Double Tagging Experiment and Tag Loss

[Fish_Boy]

Has anyone attempted to use double tagging experiment to estimate the tag loss? I know Carl Schwarz and Laura(?) Cowen had been working on an online script back in 2006ish. I was wondering if anyone has attempted to incorporate this into MARK as yet? Using simulation one could assess different rates of tag loss, but having an estimate of the actual tag loss could have a dramatic effect on smaller populations.

[jlaake]

I and others just published a manuscript on this in Journal of Agr, Bio and Env Statistics. It is online but not sure it is in print yet. Our main focus was in the use of a sub-sample of permanently marked animals but it will work without that assuming independence of tag loss. The pre-publication version is available at:

https://www.researchgate.net/publication/268989522_Hidden_Markov_Model_for_Dependent_Mark_Loss_and_Survival_Estimation

The analysis can be done with the marked R package and if you look at

https://www.researchgate.net/profile/Jeffrey_Laake/publications

you'll find the supplementary material, the R script and data set we used for the publication. The approach is based on a Hidden Markov model (HMM). I describe the use of HMMs in:

https://www.researchgate.net/profile/Jeffrey_Laake/publications

Our work is for Cormack-Jolly-Seber and not Jolly-Seber which is the subject of the Cowen and Schwarz paper and code.

[Fish_Boy]

Thanks for this!