Calculate allelic richness from haploid data

Question

[LaFra]

Hi all,

As the title says I'm trying to find a way to calculate allelic richness from haploid data. I have a fasta sequence file, but also an Arlequin file in which all the sequences are divided by populations. I cannot find a way to calculate allelic richness: FSTAT needs a format which I don't know how to obtain, PGDSpider is not able to convert the file in a usable format so I don't how to do.

Do you know any (easy) way to do that?

Thanks a lot!