HansPrive on "[Plugin: WordPress SEO by Yoast] Use of /sitemap.xml statement in Robots.txt file?"

I just started using this great tool.

In my Robots.txt file I use a sitemap statement:
Sitemap: http://www.xxxxxxxx.com/sitemap.xml

The WordPress SEO creates other sitemap names like /sitemap-pt-page-2013-01.xml.

Question:
Should I still use the Sitemap statement in my Robots.txt file?

http://wordpress.org/extend/plugins/wordpress-seo/