Sunday 3 November 2019

Man stung 30 times by Asian Hornets in France


It’s not that Asian Hornets venom is anymore toxic than our native hornet and wasps, or even that they are more aggressive away from their nest. It’s more about where Asian Hornets are increasingly choosing to make their nest.

I’ve chosen a few recent cases to illustrate this.

In Montmorillon, Vienne, a 76 year old man was stung more than 30 times by Asian Hornets in his garden when cutting a small hedge outside his house on the 30th of October 2019.
When his wife came to his assistance he was covered in hornets and she was stung 5 times before neighbours arrived with thick clothing and managed with the use of wasp sprays to get him away from them. He was transported to the hospital by the Pompiers to receive treatment.


The couple had never noticed the presence of the hornets in the hedge which is about 50cm high.

Earlier in the year on 1st August, in the Nantes area another man was stung more than 10 times when he disturbed an Asian Hornet nest in the water meter box and fortunately suffered no serious effects, however the day before at Grayan-et-l'Hôpital, Gironde, a woman died following multiple stings when she disturbed an Asian Hornet nest at about 1.5 metres from the ground when going to her post box.

In these and most other cases attacks occur when nests are disturbed, whether that is Wasps, Bees or Hornets. I have myself suffered the consequences of putting a brush cutter into a wasp nest at ground level and know how easy it is to hack away without first looking for any obvious nest activity. 

What’s becoming increasingly clear for anyone that has been following the evolving situation with Asian Hornets year on year is that they are increasingly making their nests close to the ground. This inevitably leads to an increase in attacks. (European Hornet nests are always under cover in buildings or hollow trees making accidental disturbance less likely).

Other than in a handful of cases a year in France very few people actually die from stings.

More about stings LINK HERE

Chris

Tuesday 23 July 2019

Bees in a bird box and swarm in a house


I have come across plenty of honeybee colonies that have set up home in the roofs of houses, and when necessary, have even been known to remove them when the roof was about to be renovated and it would have been too dangerous for the roofers to work. Otherwise I always encourage people to leave them alone as they present no problems for the homeowners and should be seen as a privilege in the same way as we do when swallows, house martins, wrens and other birds choose to share our property.

I have also seen honeybees nest in all manner of other places, old milk churns, compost bins, in windows and so on, but yesterday, one way or another, was a bonus day, (I’m easily pleased).

An acquaintance called and asked if I would mind taking a look at what was happening at their house where, for a few days, they had seen activity under the eaves on one corner of their house and weren’t sure if it was bees or wasps.

I arrived there at around 10am and really there wasn’t much to see, just a very small number of honeybees floating around showing no particular interest in any one spot. While we were talking another man came up the road who was introduced to me as Andy.  Andy lives just down the road and in the general course of conversation he said that he had bees living in an owl box he had installed. Needless to say I asked if I could see them and my first thought was that they would be Bombus hypnorum,  the tree Bumblebee, (or New Garden Bumblebee as they are sometimes known). He said they were smaller than a bumblebee and when we got there it was abundantly clear that it was a very active honeybee colony. The box, that had been made for Little Owls that are also present in this small hamlet, was placed in a stone wall in the aperture that had once been a small square window. As we moved away from there to return we saw a cloud of insects over a nearby field and as I walked towards them I realised it was a swarm of bees and soon they were everywhere in  an expanding cloud. As they moved off at a moderate speed we followed them up the road, over the roofs and straight to the corner of the house where the original activity had been observed. There we were in the middle of perhaps 15 or 20 thousand bees as they made their way into the roof, and, although I have seen plenty of bees swarming into a hive this is the first time I have actually seen them moving into a roof.
Click on photos to enlarge



The owners of the house say they can stay there and I hope that is the case.

Chris

Thursday 27 June 2019

France and the banning of neonicotinoid insecticides


France Becomes The First Country To Ban All Five Pesticides Linked To Bee Deaths.

Most of us will have seen this or similarly worded headlines on a myriad of mainstream media sites, blogs, alternative information sites and sites that are simply click bait for advertising revenue. Many of these so called articles are full of sensational erroneous statements and speculations that have no factual or scientific foundation what so ever.

Large numbers of people will have liked, shared and commented on these pages without any idea of what the reality is or giving it any real thought.  Most of us do this at some time or another on social media because to do otherwise would be too time consuming.

So what actually is the reality?

Yes, France has banned the use of five types of neonicotinoid insecticides that by definition have been shown to cause harm to insects.  This is two more than the EU have banned, although countries frequently derogate from the ban in certain circumstances, most recently, (Dec 2018), Belgium and some other countries are allowing sugar beet growers to use Imidacloprid as a seed treatment for 2019.  Seed treatments have been by far the main method of delivery used here in France principally on Oil Seed Rape, Maize and Sunflowers. They were also used as foliar sprays on fruit crops of most types after flowering.

However, that is not the end of the story.  Neonicotinoids are still used in flea treatments for domestic creatures and in the house plant industry.

There is little point discussing just how much, if at all, the neonicotinoids that were used in France affected honeybees, which are, after all, generally a commercially managed species here in the same way that chickens and pigs are. Overall there has been no decline in honey bee colonies.

It is however highly likely that they have contributed in no small manner to the decline of many other insect and bee species by virtue of sub lethal doses adding one more stress factor. Having said that, it’s impossible to quantify exactly what role they played against the backdrop of massive habitat loss and the large scale use of other pesticides, (some 2,500 authorised in France).

Here comes the rub. Without meaning to sound churlish, banning the five neonicotinoids in itself isn’t that big a deal when it comes to protecting the environment and saving our wildlife populations as a whole. What the ban has brought about is a return to open spraying of other pesticides, (although fungicides have always been open sprayed).  The problem is particularly bad when it comes to OSR* where the crops are sprayed when in full flower. This not only impacts all the different insects that are foraging or living there but also all the birds that nest in or along the margins of this crop.  In particular Linnet, Stone Chat, Yellow Wagtail, Corn bunting, Yellowhammer, Hen Harrier and Montague’s Harrier. Hedgehogs may also be present and foraging although not during actual spraying.

Click on image to expand



In conclusion, although this ban may be beneficial it is nowhere near enough given France is one of the greatest users of pesticides in Europe, something that is increasing at a substantial rate year on year. Huge changes have to be made if we are “to save everything” and not simply shuffle the cards using the same deck and still be killing as many species. 


OSR – Oil Seed Rape.

Pesticides – an overall generic term now used for all “cides”. Insecticides, Herbicides, Fungicides,  Rodenticides and so on.

Chris

Wednesday 19 June 2019

Log hive at a French Chateau


Chateau bees.

It’s not unusual to get called out to bee swarms and colonies between the windows and shutters of French houses. It is after all an ideal space if the shutters are closed.  The other day I was called to one in a Chateau, all very straight forward with a nice sized window for the Ruchette, (small hive box).

Victoria, the woman from the Chateau, wondered if they had come from the bees in the large section of Lime tree trunk from the tree that they had cut down in the late autumn.  Immediately she had my attention and so the story unfolded. It seems the tree had to be cut down as it had become dangerous having split in a storm. They insisted that the section with the bees in it be cut out in one large piece and this was later moved to a suitable location in the grounds with the open ends covered up to provide protection but with enough gaps for the bees to come and go. Walking down to where it was I was impressed by the size of it and although it was laid flat on the ground the bees had obviously made the necessary adjustments and were happily going about their business.

Click on images to enlarge.


Maybe not the standard idea of a log hive

Then it turns out there is another honeybee colony high up in one of the chateau towers walls which it seems is always occupied by bees. Of course this may not be a continuous occupation. More likely that from time to time the colony fails and the space attracts a future swarm as is usually the case.


Honeybee colony in the tower wall, entrance circled in red.

The colony that had set up home between the window and shutters was easy enough. They had been there a couple of weeks or probably a little more. Strangely there was quite a lot of brood but no honey and only a little pollen.  They are now safely in my apiary where they are very busy on the Sweet Chestnut that has just started to flower.


Ruchette in the widow, bees happily inside and waiting for me to take them away.

I must add that it’s a great joy to meet people that care about the other creatures we live with and make every effort to accommodate them. Their buildings and grounds are a little wildlife haven.

Chris

Thursday 4 April 2019

Purple emperor and Lesser purple emperor butterflies in France


Purple emperor and Lesser purple emperor butterflies – a simplified life cycle and how to see them.

These two butterflies spend most of their time in the woodland canopy where they feed on aphid honeydew, or occasionally when they descend to feed on sap runs or, in the case of the male, animal droppings, carrion or moist ground that provide much needed salts and minerals which are generally the only times we get the chance to see them.

Click on images to expand 
Above - Male 
Above - Female 

Both species use willows, principally Goat willow, and in the case of the Lesser Purple Emperor poplars as well, especially Populus tremula, for their caterpillars to feed on.

Eggs are placed singly on leaves near the tree canopy and the caterpillars have an extraordinary life cycle that can last 300 days or more with various pauses between each instar change, the last before pupation being a long hibernation through winter in a crevice or branch fork wrapped in a little spun silk.  Pupation takes place in spring and adults fly from May.

Both species can be observed throughout France where there are woodlands or copses but are more numerous in the warmer parts of the country.

As mentioned above they are drawn to animal droppings, carrion or moist ground where they can access minerals and other salts and many people make up mixtures to attract them during the summer months. Most of these mixtures are fairly foul by human standards and frequently contain rotting shrimp and other seafood or fish such as sardine. Best put in a container for a week or two somewhere warm before being put out on the ground on a sunny morning in July or August. Dead animals and mammal excrement are also popular but maybe not something everyone would want in their garden.

Of course your success will be dependant on the butterflies being present which is one more good reason for growing Goat willow and even if you don’t have either species of Purple Emperor where you are these mixes will attract some other species of butterfly.

Have fun - Chris

Thursday 21 March 2019

Assassin bug the Masked hunter, Reduvius personatus, in France


Masked hunter, Reduvius personatus,  Réduve masque

Found in most regions of France this member of the True bug family is known as an Assassin bug and due to its secretive nocturnal behaviour it tends to go unnoticed even when in your home.

They are especially fond of old houses, barns and outbuildings where they hunt other insects including bedbugs, silverfish, book lice and flies. However they will eat any number of small insects and can also be found in other habitats including woodland, scrub and grasslands but always avoiding the light. Where ever they are they are never in large numbers.


Although they bite and kill their prey by piercing them with their robust rostrum they rarely use this against humans unless handled roughly but if they do it isn't dangerous but can be extremely painful.

They spend the winter as juveniles and then breed in May or June having reached the adult stage.  During their development stages, (instars), they exude a sticky substance and coat themselves in dust and debris presumably to camouflage themselves.


Rather like the House Centipede they help maintain a balance in the home by predating on other insects even though you may not even be aware of their presence. 

Chris







Monday 11 March 2019

Ladybirds in France including the Asian Harlequin Ladybird


Every year in autumn and spring there are articles in the media, especially in the UK, about the Asian Ladybird, Harmonia axyridis, or Harlequin Ladybird as it is known, one of several thousand different non native species introduced in both France and the UK although only a few are ladybirds. This species is generally regarded as the most invasive ladybird on Earth and although they undoubtedly have an environmental impact due to their high breeding and survival rate combined with their voracious appetite most experts are of the opinion that they are now so abundant that there is little if any point in killing them.


Harlequin ladybirds, above, are extremely variable but most have a clearly defined "M" or "W" on the pronotum.

Although they feed most commonly on aphids they have a wide food range that includes scale insects, adelgids, the eggs and larvae of butterflies and moths, many other small insects including other ladybirds, pollen, nectar, and sugary fluids, including honeydew and the juice from ripe fruits bringing them into direct competition with native species of Ladybird many of which are already under pressure resulting from all the usual reasons, habitat loss and pesticide use being uppermost.

The risk as always that comes from articles in the media and the consequent sharing on social media is that some people will unwittingly start killing anything that they don’t recognise as the stereotypical image of a Ladybird, generally the most common of which is the Red and Black spotted 7 spot ladybird, and there are too many people already locked into a “kill everything that isn’t a butterfly” mode of thinking.

To move on, there are 90 or more species of native Ladybird in France most of which wouldn’t be recognised as such. Some are brown, some black, some yellow and black, some black and red, some orange and perhaps not surprisingly many are highly selective about where they live and what they eat with many being vegetarian.

It would be difficult here to include that number of native species, so I have listed a few here to give some idea of just how different they are. 

Kidney-spot ladybird (Chilocorus renipustulatus) Black body with large red spot on each wing case, feeds on scale insects on the bark of trees.

Pine ladybird (Exochomus 4-pustulatus) Usually elytra are black with two larger red comma-shaped spots and two smaller red round or oval spots, feeds on aphids and scale insects.

Heather ladybird (Chilocorus 2-pustulatus) Black with 2 to 6 red spots feeds on scale insects.

16-spot ladybird (Tytthaspis 16-punctata) Beige with black spots. Feeds on Aphids, Pollen, nectar and fungi. Can overwinter in large numbers, 50 or more in one cluster.

Orange ladybird (Halyzia 16-guttata) Orange Ladybirds can be bright yellow or orange in colour with 16 creamy spots. Feeds on mildew.

22-spot ladybird (Psyllobora 22-punctata). Bright yellow with 22 black spots. Feeds on Mildews

24 spot ladybird (Subcoccinella vigintiquattuorpunctata) Sometimes known as the Alfalfa Ladybird. Orange –red, number of spots may vary. Feeds on a variety of plants including Campions, vetches, trefoils, chickweed and plantains among others. They will also take grasses and in France can be a pest of lucerne.

Hieroglyphic ladybird (Coccinella hieroglyphica) brown or black with black stripes, spots and patches. Feeds on larvae of Heather leaf beetle.

Bryony ladybird (Henosepilachna argus) Orange red with 11 black spots. Feeds on White bryony and plants of the Melon family.

28-spotted potato ladybird (Henosepilachna vigintioctopunctata) Orange with 28 spots feeds on the foliage of potatoes and other solanaceous crops.


 Chris.