Monarchs and Monoculture in southern Michigan

Tim Nash tim.nash at wanadoo.fr
Sun Aug 28 08:17:57 EDT 2005


Ed,
A good question is what does the limited data suggest?
If the numbers tagged in the Eastern Seaboard states(A) were similar  
to those in the Midwest states(E):
an explanation is that Monarchs only "know" to migrate North-South  
and therefore most of the (A) Monarchs, which make it that far, end  
up as food for fishes. Since there have been reports of offshore oil  
installations covered in butterflies this is, at the least, a  
possibility.

It would also be useful to know, from tagging the Monarchs in the  
known overwintering sites in Mexico, how they scatter over the  
Midwest and Eastern Seaboard states. If there are large areas without  
tagged Monarchs there could be other overwintering sites and more of  
the (A) Monarchs go there.
Best,
Tim

On 28 Aug 2005, at 03:57, Ed Reinertsen wrote:

> Before we leave this subject, I have some questions as to why some
> thought the data was "pseudoscience". I got the data from Monarch
> Watch's searchable database. I hope to do more research, (like many
> others) with this data. Do you all think the data is good enough  
> for research?
> As far as the numbers how many tagged Monarchs are enough?
>
> This data below was pulled to see if there was a change
> 3 years before and after 2001. The numbers for Virginia, New York,
> Pennsylvania, and West Virginia were pulled to see if the ratios  
> changed also.
> See below.
>
> This was not a paper being written, This post just started as some  
> guys sharing
> different thoughts about Monarchs and GM crops........
>
> E = Iowa, Illinois, Indiana, Ohio
> A = Virginia, New York, Pennsylvania, West Virginia
>
> Numbers & Year of Monarchs Tagged and Recovered in Mexico
>
> 1998     1999        2000      2001        2002      2003        2004
> E - 44    E - 164    E - 37    E - 974    E - 87    E - 854    E - 70
> A - 5     A - 34      A - 3     A - 84      A - 8      A - 131   A - 1
>
> Ed Reinertsen
>
>
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