What's really the point of wasps?
For Cooper, Gabby, and Dylan who in a recent hiking outing came face to face with more than a few curious wasps interested in our Sweet Baby Rays barbeque sauce. The question came up, in part provoked by me: "What do they do?". I already knew that were responsible for eating other insects like mosquitos and such. But on balance I am terrified of them. In the parlance of my profession, being in their presence is like being short a naked backspread. One sting begets 50 more. There is no stop out once the first one hits.
As a tough guy not afraid of physical pain I do not speak for myself. My fear is an echo of an experience our dog Sweetheart went through.She was traumatized by these robotic assassins. Apparently when provoked they will chase intruders a 1/4 mile to protect their home.
Sweetheart and I learned this one night on the deck of our home. I spied a lone wasp and ignored it. But Sweetheart nipped at it and it attacked her. Then it got worse.
Apparently we stumbled on a wasp nest under our deck and had crossed their defensive line. A few recon bugs were sent to see if we meant harm, and it was clear Sweetheart did. So she was stung. It is important to note a wasp sting is far less poisonous than a Bee's. But that is made up for in its ability to inflict multiple attacks, whereas a Bee dies in defense after 1 attack.
What we did not know was that once marked with a single sting, the hive now had a phermone marked target to go after. I witnessed 5 or six of these guys rise up through the floor boards like Harrier VTOL jets and just hover as Sweetheart, shivered in my lap. I thought, "Don't bother them, they wont bother you" . Butt hat is a canard, because as Machiavelli says, "Sometimes goodness is not enough and malice receives no gift that placates her" .
The sortie of yellow jackets knew its target, my dog. And as they swooped in, I swatted and defended my lady's honor, in the process getting stung multiple times. And then hell broke loose.
All at once about 50-100 of these guys rose up, like in a bugs bunny cartoon. I swear they paused as if to say, "We got you now!" before launching their assault on us. In full retreat, Sweetheart and I ran in the house, closed the glass door and ran across the house in my bedroom, closed the door and waited out the stragglers who go in.
After 5 minutes consoling the puppy who was now panting in a mild shock perhaps from the multiple stings, I ventured out into the house wielding a rolled up Economist to take care of the invaders. After tending to Sweetheart and killing 2 wasps stuck in her fur that were still stinging her, I walked with trepidation to the glass door on the deck. The door was covered with some 50 wasps all seeking to get the intruders. As I approached the door, their numbers grew, as whatever they marked me with was alerting more numbers to come.
Satisfied we were safe, a truce was made with the wasps in weeks to come. They were here first and so I acknowledged that. In return, they let this child of Italian immigrants remain on their land. Sweetheart and I stayed on the other side of the deck for the remainder of the summer and watched as the wasps killed all manner of bugs trying to get in our home. For us, that is the point of wasps. The airborne defenders against flies and mosquitoes.
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A new citizen science survey aims to shed light on that fixture of summertime in the outdoors: the wasp. Though much maligned, these fascinating creatures perform a vital ecological role, say scientists.
The only thing more certain to spoil an August Bank Holiday weekend BBQ than a sudden cloudburst? The arrival of wasps.
At this time of the year, it can sometimes seem as if every outdoor activity is plagued by these yellow-and-black striped insects buzzing around your head and landing on your food and drink.
Wasps aren't just annoying - if you are unlucky, you might end up with a sharp reminder that wasps, like their close relatives the honeybee, pack a powerful sting. That combination of nuisance and pain makes wasps many people's least favourite animals.
Perhaps more than any other insect, wasps are badly in need of a change in public opinion. As well as having fascinating lives, they are extremely important in the environment and face problems similar to those of their cherished, but often no less annoying, cousins the bees.
As the summer approaches its end, many will wish for it, but a world without wasps would most certainly not be a better place.
Social types
The insects we most commonly identify as "wasps" are the social wasps. Social wasps (called yellow-jackets in some places) live in colonies consisting of hundreds or thousands of more-or-less sterile female workers and their much larger mother, the egg-laying queen.
The handful of colony-living, nest-building species is just a tiny fraction of overall wasp diversity, estimated at more than 9,000 species in the UK alone. Most wasps are solitary, some are tiny (a few species practically microscopic), none ever bother us and virtually all are overlooked.
Social wasp nests are constructed from wood fibres collected and then mixed with water by industrious wasp workers to make a kind of papier maché capable of producing very strong and long-lasting structures. The nests start to develop in late spring, when queen wasps emerge from hibernation.
Building a small nest of just a few paper cells, the queen must rear the first set of workers alone before the first batch of worker wasps can start to take over the work required by the developing colony.
Image caption Social wasps make nests from wood fibres mixed with water, to create a kind of papier mache
Wasp workers toil ceaselessly to raise their sister workers from eggs the queen lays, cooperating and communicating in intricate ways to build and defend the nest, collect food and look after the queen. When the colony is large enough the workers start to give some young larvae more food at a much greater rate than usual, triggering genetic switches that cause the development of a potential queen rather than a worker.
Male wasps, who take no part in the social life of the colony, develop from unfertilised eggs in a form of sex determination called haplodiploidy, also found in bees and ants. These male-destined eggs are laid by the queen and rarely by workers, some of whom retain the ability to lay eggs but lack the ability to mate.
Potential queens (called gynes before they head a colony) and males, sisters and brothers of the workers, are the reproductive future of the colony. Mating with males from other colonies, the gynes overwinter before starting a colony of their own the following spring.
They may not make honey, but nonetheless wasps have just as fascinating social lives as the celebrated honeybee.
Vital role
Wasps are also just important in the environment. Social wasps are predators and as such they play a vital ecological role, controlling the numbers of potential pests like greenfly and many caterpillars.
Indeed, it has been estimated that the social wasps of the UK might account for 14 million kilograms of insect prey across the summer. A world without wasps would be a world with a very much larger number of insect pests on our crops and gardens.
As well as being voracious and ecologically important predators, wasps are increasingly recognised as valuable pollinators, transferring pollen as they visit flowers to drink nectar. It is actually their thirst for sweet liquids that helps to explain why they become so bothersome at this time of year.
By late August, wasp nests have very large numbers of workers but they have stopped raising any larvae. All the time, nests have larvae the workers must collect protein, which accounts for all those invertebrates they hunt in our gardens. The larvae are able to convert their protein-rich diet into carbohydrates that they secrete as a sugary droplet to feed the adults.
With no larvae, all those adult wasps must find other sources of sugar - hence why they are so attracted to our sugar-rich foods and drinks. When you combine that hunger for sugar with nice weather and our love of eating and drinking outside, the result is inevitable.
A new study is taking advantage of wasps' love of our drinks to find out more about these fascinating and undervalued insects. Calling on members of the public to help, the Big Wasp Survey is asking people to build a simple wasp trap from a drinks bottle and a small volume of beer.
Scientists from University College London (UCL) and the University of Gloucestershire want to collect and study the contents of these beer traps. The project, in conjunction with BBC's Countryfile and sponsored by the Royal Entomological Society, hopes to find out which species of wasps live where in the UK, and provide some baseline data for an annual Big Wasp Survey over the coming years.
As Dr Seirian Sumner (UCL) says: "The black and yellow wasps that bother us at picnics are social wasps and we would like to find out much more about where they live and how common they are; to do that we need the public's help".
Insects are generally having a hard time; changing environments, changing climate, habitat loss and the use of insecticides are all taking their toll on these vital creatures.
Yet, whilst many take up the cause of the honeybee or extol the beauty of butterflies some of the most fascinating and important insects remain the most reviled. It's time we stopped asking "what is the point of wasps" and started to appreciate them for the ecological marvels that they are.
Read more by Soren K.Group
