Pollinators and Pesticides

Debate between Martin Caton and Joan Ruddock

Thursday 6th June 2013 Commons Chamber

[Martin Caton (Gower) (Lab)]

It is a pleasure to follow the hon. Member for Stroud (Neil Carmichael), who is a fellow member of the Environmental Audit Committee, and I join him in paying tribute to the leadership of our Committee Chair, not only on this vital inquiry, but on all our inquiries.

I strongly support all the conclusions and recommendations in our report, but my interest in what is happening to our pollinating insects goes back quite a bit further than last November, when we started taking evidence. In fact, it probably dates back more than 40 years to when I was at agricultural school and undertook a course in apiculture. The certificate I secured at the end remains a treasured possession. More recently, about three years ago, that interest was further spurred by a 2009 report produced by the organisation Buglife, which our Chair has already mentioned, and the Soil Association. It was a review of the scientific literature on a group of systemic pesticides called neonicotinoids on non-target insect species.

Although the combined evidence in the report was not conclusive, even at that time it rang serious alarm bells that should have received an urgent response from the Government. I secured a Westminster Hall debate on the subject, which a surprising number of Members from across the House attended to express their shared concern about the potential threat posed by these pesticides to a vital group of invertebrates—pollinating insects. Since that debate, thanks to intelligence supplied by Buglife and other environmental organisations, I have tried to keep track of further research and, when significant, have drawn it to the House’s attention through early-day motions and other parliamentary means.

As our Chair said, last autumn, the Committee decided to conduct what has turned out to be a major inquiry taking evidence from the organisations she mentioned. The first thing the Committee had to recognise was that many of our pollinating species appeared to have been in decline for some time. Of course, when we look at pollinators—especially any threats to them—the first focus is usually honey bees. That has been particularly the case in Europe and the USA in recent years, with alarming reports of what is sometimes called colony collapse on an international basis.

As a result of their economic significance, honey bees attract far more scientific attention than any other pollinator. Their decline has been ascribed to a range of causes—pests and diseases, such as the varroa mite, which has been mentioned, along with weather conditions, poor nutrition, poor husbandry, urbanisation, agricultural intensification, habitat degradation and the use and misuse of pesticides. However, honey bees are not the main pollinators in the UK—far from it. Ninety per cent of insect pollination is done by the thousands of other, wild pollinators—other bees, hoverflies, butterflies, carrion flies, beetles, midges, moths, and so on. These other pollinators are not monitored or studied like honey bees, so we do not know exactly what is happening to them. However, we received disquieting evidence from some witnesses of how, as the Chair has said, two thirds of wild pollinator species are declining, including moths, butterflies, hoverflies and bumble bees. We were told that of the 25 UK bumble bee species, two or three—no one is sure because the research has not been done—have already become extinct, while probably 10 others have suffered large range decline.

We were advised that DEFRA has a bee unit that does a good job of monitoring honey bees. There are 70 Government scientists dedicated to researching honey bees, but just part of one scientist looking at the health of wild bees. That has to change. We cannot afford to remain ignorant about our wild pollinators. That is why we call in the report for DEFRA to introduce a national monitoring programme to generate and monitor population data on a broad range of wild insect pollinator species. If we do not really know what is going on, we cannot make the right policy decisions to halt decline.

Most people looking at pollinator decline would come to the conclusion that, at least in most cases, multiple factors are at play—those that I have listed for honey bees and perhaps others. Most of our witnesses who addressed the wider picture accepted that there were probably a range of causes. However, the representatives of mainstream farming and especially the agrichemical industry were absolutely adamant that the decline had nothing to do with pesticide use and especially not the use of neonics. Our Chair has described how neonicotinoids work, which I will not repeat, but I will add that they are systemic, which means that they get into every part of the plants that are treated with them. Pollinating insects absorb them and carry them back to their nests or hives, even though they are not the target species.

[Dame Joan Ruddock]

My hon. Friend is making some interesting points. Does he think, as I do, that the Government perhaps need to rewrite their national pesticides action plan? There are methods other than the use of chemicals. They ought to be encouraged so that farmers and horticulturalists do whatever they can to reduce the chemical pressure on the environment and the pollinators.