You may find this link interesting as the study you are referring to is seriously flawed: http://www.mercuryfacts.org/

Here's a CNN link showing that Bumble Bee is Kirkland:

http://money.cnn.com/magazines/moneym...

Read this article:
http://money.cnn.com/magazines/moneym...

Just so you know, Kirkland uses Bumble Bee tuna. The tuna is processed and packaged at the Santa Fe Springs Bumble Bee plant. So, techically, you never stopped buying Bumble Bee...

I hate to burst everyone's bubble, but Kirkland brand is Bumble Bee tuna. They copack the tuna at the Bumble Bee facility and Kirkland supplies the labels. Here's a link to the CNN article about it:
http://money.cnn.com/magazines/moneym...