Meiosis drone honey bee

[Brian Bush]

Can anyone point me to a clear description of meiosis in the drone honey bee please.

 

[Juhani Lundén]

Post 5,just to be able to send links

 

[Juhani Lundén]

Post 6 just to be able...

 

[Juhani Lundén]

Post 7 just to be...

 

[Juhani Lundén]

Post 7 just to...

 

[Juhani Lundén]

Post 8 just...

 

[Juhani Lundén]

Post 10, am I now grown-up?

Please remove those above!

 

[Juhani Lundén]

https://www.dropbox.com/s/p2yni1lkdta831y/Meiosis – kopio.pdf?dl=0

 

[thenovice]

https://www.dropbox.com/s/p2yni1lkdta831y/Meiosis – kopio.pdf?dl=0

not quite correct. Meiosis is slightly different in spermatogenisis in honeybee. see Page 212 of this book.

https://books.google.co.uk/books?id...v=onepage&q=Bee Genetics and Breeding&f=false

 

[JEP]

If you google "spermatogenesis in honey bees" or "spermatogenic process in the honey bee haploid drone" or similar you will find plenty of info.

Regards,

James.

 

[Juhani Lundén]

Ups, meiosis of a drone...

From Hive and the Honeybee, 1993, page 238:
"The reduction division of a drone matures a spermatozoon by a meiotic process that aborts the reduction division. Consequently, all sperm of a drone are genetically identical and are genetic replications of the genome formed during maturation of the egg that gave rise to the drone"

https://www.dropbox.com/s/c3ipv8ujm5e64dg/Meiosis of a drone.pdf?dl=0

 

[For want of a better word]

Hence flying gamete!

Nos da

 

[masterBK]

They will only all be genetically identical if you assume that there are no mutations occurring. With millions of sperm being produced by each drone there is a good chance of a few sperm with mutations in a one or more genes.

 

[alldigging]

Can anyone point me to a clear description of meiosis in the drone honey bee please.

There's some videos that explain haploid/diploid
There's one.
https://youtu.be/xD62suykD6o

There was some interesting stuff on http://waynesword.palomar.edu/lmexer2a.htm
http://bio1510.biology.gatech.edu/module-4-genes-and-genomes/4-1-cell-division-mitosis-and-meiosis/

 

[Brian Bush]

not quite correct. Meiosis is slightly different in spermatogenisis in honeybee. see Page 212 of this book.

Thanks for this link, unfortunately page 212 is not one of the pages visible in preview. They must have seen me coming!!!!

 

[Brian Bush]

Ups, meiosis of a drone...

From Hive and the Honeybee, 1993, page 238:
"The reduction division of a drone matures a spermatozoon by a meiotic process that aborts the reduction division. Consequently, all sperm of a drone are genetically identical and are genetic replications of the genome formed during maturation of the egg that gave rise to the drone"

https://www.dropbox.com/s/c3ipv8ujm5e64dg/Meiosis of a drone.pdf?dl=0

Thanks for your efforts and the links Juhani.

 

[Brian Bush]

Ups, meiosis of a drone...

From Hive and the Honeybee, 1993, page 238:
"The reduction division of a drone matures a spermatozoon by a meiotic process that aborts the reduction division. Consequently, all sperm of a drone are genetically identical and are genetic replications of the genome formed during maturation of the egg that gave rise to the drone"

https://www.dropbox.com/s/c3ipv8ujm5e64dg/Meiosis of a drone.pdf?dl=0

Hi Juhani can I ask you to scan this page again to PDF for the dropbox. It is at an angle and some of the text is missing

thanks

Brian

 

[bpmurray]

Can anyone point me to a clear description of meiosis in the drone honey bee please.

I thought that since a drone was haploid, there could be no meiosis, i.e. sperm production was entirely mitotic with identical copies. Have I misunderstood something?

 

[alldigging]

I thought that since a drone was haploid, there could be no meiosis, i.e. sperm production was entirely mitotic with identical copies. Have I misunderstood something?

http://honeybee.drawwing.org/book/diploid-drones

Diploid drones
Normally drones develop from unfertilized eggs and are haploid. Diploid drones (called also "biparental males") develop from fertilized eggs [1][2] which are homozygous at sex locus. In nature diploid drones do not survive until the end of larval development. The larvae of diploid drones are eaten by workers [3] within few hours after hatching from egg [4] despite the fact that they are viable [5][6].

 

[bpmurray]

http://honeybee.drawwing.org/book/diploid-drones

Diploid drones
Normally drones develop from unfertilized eggs and are haploid. Diploid drones (called also "biparental males") develop from fertilized eggs [1][2] which are homozygous at sex locus. In nature diploid drones do not survive until the end of larval development. The larvae of diploid drones are eaten by workers [3] within few hours after hatching from egg [4] despite the fact that they are viable [5][6].

Thanks for that - I actually didn't think of diploid drones! I presume their offspring would suffer from trisomy - I would have expected them to be non-viable or, at least, not really fit for purpose which is, I suppose, why they're removed.