As most of you know, I’m enamored with learning about drones - male honey bees, not the small flying machines. I truly believe that you can’t have a great queen without some awesome drones. With all the attention given to queens, drones are often taken for granted and forgotten. However, since the promiscuous queen mates with 15 and sometimes as many as 20 different drones, they really should not be overlooked.
Brandon Hopkins teaching queen breeders about his work in cryopreservation |
So let’s get back to the bees and the associated problem at hand. Due to the Honey Bee Act of 1922, the importation of honeybees and honeybee germplasm from other countries was stopped in order to minimize tracheal mite infiltration into our US honeybee population. However, in doing so, it has also resulted in a smaller genetic resource pool.
To combat the decreasing genetic possibilities, special permission was granted to Sue Cobey and a group of researchers to obtain drone semen from old world countries like Slovenia, Germany, Italy, and the Republic of Georgia. The introduction of new genetics using only semen can take 5 or 6 mating cycles – nothing happens overnight in the world of honeybee biology. The problem is that freshly collected drone semen quickly loses viability when stored at room temperature – although it amazingly lasts much, much longer than its mammalian counterparts. Therefore, without a better preservation technique, it was going to take several trips to gather germplasm to convert a US bee to one that contains 90%+ ‘old world’ stock by using drone semen only. Although previously attempted, a technique to collect, evaluate, store, and freeze drone semen like our dairy farmer friends use didn't provide for a high enough worker progeny ratio so it was seldom used.
Brandon Hopkins is demonstrating some of the equipment used in cryopreservation. |
A great group of queen breeders looking to learn new ways to help bees |
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