A to Z challenge 2023 – P is for . . .
My
theme for this challenge is Nature in all much of her wonderful
diversity. My posts will reflect the fact that I am resident in the south of
England.
All
photographs in this post are the property of the writer.
Pollinators
Marmalade hoverfly on cornflower
The first beasties that come to mind as pollinators are bees and butterflies, but birds, moths, flies, beetles and wasps all play their part. Even small mammals like mice can contribute to the greater good.
Robins, blackbirds, blue tits and starlings are among the birds that are classed as pollinators. Even humans can be responsible for accidentally transferring pollen from one place to another. (Some do it deliberately, with a fine paintbrush. I had a sudden vision then of someone wielding a house-painter’s brush, maybe even a roller!)
Some of the pollinators have interesting habits. For example, the bumblebees, those big furry insects that tempt one to stroke them, vibrate their bodies to dislodge pollen. The bees then comb the pollen off their bodies into little baskets on their legs. This is called buzz pollination and while most of the pollen is taken back to the nest to feed their young, some will be transferred to the next flowers the bees visit.
Some species of bumblebees can fly at around 15 kilometres an hour – that’s 9.3 miles per hour. The average walking speed of a reasonably fit human is 3 to 4 miles per hour!
Marmalade hoverflies (Episyrphus balteatus) are prodigious pollinators and extremely migratory, able to travel hundreds of miles a day. Billions of them fly in and out of southern Britain every year, carrying copious amounts of pollen. They visit almost three quarters of global food crops and over 70% of wildflowers. They also feed on aphids, so do double service.
Not all bees live in communities, and the pantaloon bee (Dasypoda hirtipes) is one I haven’t seen, but I love the name. She is one of nearly 250 species of solitary bees and sports a host of long orange hairs on her hind legs, which convey the pollen back to the nest.
Wasps (Vespula vulgaris) have their purpose, too, as pollinators. They have high energy requirements, so search out flower nectar. In the process, pollen sticks to their bodies, so even though they are not as hairy as bees, they are still important pollinators. Remember that, the next time you attempt to swat one!
Gatekeeper butterfly feeding on scabious
Moths and butterflies also collect pollen on their bodies as they search for nectar.
Beetles have been important pollinators for millions of years. Some have adapted to a pollen-rich diet, while others, like the ladybirds, enjoy pollen as a pleasant addition to their usual diet of aphids.
Around 1000 species of the UK’s beetles, about a quarter of the total, are pollinators. Some are dedicated pollinators while others pollinate incidentally, moving pollen as they travel around.
