Hi Chris

> The  results
> show that: compared to the parent workers, the proboscis  length,
> anterior wing area, the total length of the third and fourth  dorsal
> plate of the abdomen, the length of the fourth dorsal plate of  the
> tuberculum, the area of the sixth abdominal segment, and the area  of
> wax mirrors are significantly different, 
> 
> This suggests that these characteristics are acquired rather than  inherited; 
> from which it follows that the science of morphometrics used to  decide the 
> race of bees, whether African or Amm/Aml etc, may need a  re-think.  What say 
> you, Dave?

I presume that Chris has singled me out because I am currently studying 
Geometric Morphometrics at Manchester University, please do not consider 
that this makes me any kind of expert on the subject.

Of the characters in the list above only the proboscis length is 
commonly used in recognition algorithms in A. mellifera species although 
changes in wing area will alter the layout of wing veins, which are 
extensively used (we do not know how much until we can see some numbers).

The word significant is used, but no numbers are mentioned. It should 
also be noted that Morphometry is not a primary indicator of race. 
Behaviour is the main indicator, with morphometry able to qualify or 
refine certain features in a secondary and supportive manner, nobody 
should be making decisions based on morphometry alone.

There is a possibility that morphometry may be able to become a primary 
indicator in future, if more parameters are taken into account, such 
additional features being fine structure of the tongue, measurements of 
leg joints and some features of the genitalia. However this work has not 
yet been completed, nor the linkage between biology and physically 
measurable features positively established.

I do not think that Nutritional Crossbreed Technology will turn anything 
on its head, I find it an interesting concept which should be explored 
further in terms of artificial larval diets, but like so many other 
things, I can't see research money being made available for it.

I also have a problem with the words...
"This suggests that these characteristics are acquired rather than 
inherited;"

All it means to me is that diet affects development.


Regards & Best 73s, Dave Cushman, G8MZY
http://melliferabees.net Email: [log in to unmask]
Short FallBack M/c, Build 7.21/2.01
Son of ORAC M/c, Build 5.o1/2.o1

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