Migrate output - Posterior distribution

[Christopher Cambrone]

Hello,

I am using migrate to estimate migration rate or Nm among different populations of pigeon in the Caribbean, and I will also seek to identify the kind of movement pattern there might be among island populations, suspecting asymetric movements, especially from the Greater Antilles. I have performed several attempts to find good parameters. I think that I have (partially) found the good ones, but I have some doubts about the posterior distributions, especially for the posterior distributions of tethas. Could someone help me and advise me about this strange distribution pattern?

Many thanks in advance,

Attached the output files

Best regards,

[Christopher Cambrone]

Sorry, I forgot to attach the doc.

[Peter Beerli]

Chris,

your prior is set to low the upper bound for microsats should be more like 50 instead of 0.25 .

If you use a more modern version of Migrate (for example, 5.x (https://peterbeerli.com/migrate-html5/download_version4/)

then migrate may have adjusted the default for the upper bound for theta prior. 

set the prior for theta in the parmfile

to

bayes-priors= THETA * * UNIFORMPRIOR: 0.000000 50.000000 5.000000 

best,

Peter

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