I think you're right, Carlos.
 
Africanized bees have bogged down just inside the U.S. border, and
haven't progressed northwards for over two years.
 
They have never been found in North Africa.
 
And (Garth, check me on this) I don't think they've ever made it to the
Cape.
 
35 degrees latitude seems to be their limit.
 
You say they don't ball.  First time I've heard that.  If so, that would
go a long way to explaining their latitude limitations.
 
 
Walter Weller
Post Office Box 270
Wakefield, Louisiana  70784
<[log in to unmask]>
On Tue, 13 Jan 1998 21:31:14 +0300 Carlos Aparicio
<[log in to unmask]> writes:
>African Honeybees don't know how to do the winter ball. For this
>reason they
>can't survive temperatures less than 10=BA (c) and they environment
>is=
> limited
>between the tropics.(Sao Paulo at South, Texas at North).
>        Anyway I can't explain why this capacity seems not to be
>changed for
>breeding with other races.  At least in Africa they could't pass the
>tropics
>in thousand of years.
>        Here in Uruguay (35=BA latitude South) we have not Afr. Honey
>Bee.
>        I don't believe the idea of African Honey Bees crossed the
>Pyrenees
>and evolved into the now existing European races of bees. May be the
>truth
>be the opposite.
>The capacity of accumulating foods, typical of the bee, it is almost
>only in
>the world except by their great imitator:  the humans.
>        This capacity seems to indicate that the natural environment
>of the bee is
>tempered  with important seasonal variations in the supply.
>        The tropical bee, seems an anomaly, since does not need to
>accumulate in an
>environment that has foods all year round .
>        Just an oppinion.
>
>        Carlos Aparicio
>
>
>       =20
>
>
>At 01:31 PM 13/01/1998 -0500, \\Dr. Pedro P. Rodriguez wrote:
>>Hi All.
>>Hummmm.  I wonder if in effect the Andes cold temperatures have had
>any
>>influence in this trend.  That would be very significant for the
>theory of
>>their trajectory in North America.  Would "colder" climatic
>conditions in=
> fact
>>limit their norwarth progression?  Some years back I read an article
>about
>>"Africanized" bees that had been submitted to laboratory enhanced
>cold
>>environments and survived. (I do not have the reference on hand but I
>am=
> sure
>>that I have filed away with other reference material). According to
>Brother
>>Adams,  African bees crossed the Pyrenees and evolved into the now
>existing
>>European races of bees. What other factors are there in the Southern=
> hemisphere
>>to negate a similar occurrence there?   If in fact, degree of
>coldness=
> alone is
>>the limiting factor,  the earlier assumptions of territorial
>limitations=
> would
>>prove true.
>>Thoughts, any one?
>>Best regards.
>>Dr. Rodriguez
>>Virginia Beach, VA
>>
>>
>