Bees pollinating cucumbers in Turkana

Hello – greetings from Turkana in Northern Kenya…

Up here checking in on my lab at the Turkana Basin Institute and spent half a day looking at bees pollinating the cucumbers being cultivated at the institute. Cucumbers are one of my favourite salad items and make a refreshing snack up here in the desert at lunchtime. Cucumbers are yet another example of a food item that we enjoy thanks to pollinators.

Cucumbers are in the family of plants called Cucurbits (Curcubitaceae), that includes watermelons, pumpkins, squashes and gourds.

Most members of this plant family are dependent on pollinators, and many of them have separate male and female flowers (though these can occur on the same individual plant).

It has rained up here in Turkana about a week a ago and the ground is delicately painted with flowers and the air filled with bees and butterflies.

Here are some of the bees and their antics on the cucumber flowers.

One of the first bees to arrive was the lovely Macrogalea bee, who also spent time sunning themselves on the flowers:

Macrogalea bee

Macrogalea Bee on Cucumber Flower

After warming themselves on the cucumber flowers, the Macrogalea bees dove into the flowers and as you can see were soon coated with pollen and moving it around the flowers:

Macrogalea bee hard at work

Macrogalea bee hard at work

They were also visiting the flowers of a different cucurbit (a butternut squash variety), nearby:

Macrogalea crawling out of Squash flower

Macrogalea crawling out of Squash flower loaded with pollen.

 

As the morning grew hotter, the next bee-shift appeared and these guys whizzed about the cucumber patch with dizzying speed. One of my favourite bees, known as Amegilla:

Amegilla Bee pollinating cucumber flower

Amegilla Bee pollinating cucumber flower

 

The Amegilla bees moved speedily between the different patches of cucumber plants, this makes them efficient pollinators as they transport pollen between different individual plants.

Busy Bees! Amegilla at work.

Busy Bees! Amegilla at work.

 

There were at least two different species of Amegilla present, the beige-grey one and this brightly coloured orange one visiting the cucumber flowers:

Another Amegilla bee hard at work!

Another Amegilla bee hard at work!

Bees were not the only insects visiting the flowers, a Grass Yellow butterfly (Eurema sp.) also stopped by. Although it was a faithful visitor, it didn’t seem to be carrying much pollen around.

Grass Yellow Butterfly sips nectar

Grass Yellow Butterfly sips nectar

 

The bees kept coming and going throughout the morning and we enjoyed some of the cucumbers at lunch!

Please click on image for larger version

Please click on image for larger version

More from the wonderful world (and work!) of insects soon…

 

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