Skip to main content

Humans help Invasive tiger mosquitos

Since 2012 Mallorca Island, off the coast of Spain,  has experienced rapid colonisation by the Asian tiger mosquito.  This was not anticipated because the natural climatic conditions on the island were not considered optimal for the species.  So what has been encouraging their colonisation of the Island?  The answer it seems is humans. 

The Asian tiger mosquito (Aedes albopictus) is a highly invasive species and a vector of multiple pathogens including various viruses, such as chikungunya, dengue, and Zika. A new Medical and Veterinary Entomology study that evaluated the relationship between the mosquito’s presence and habitat variables at a small scale provides important information for planning effective prevention and control campaigns.

a tiger mosquito - photo Mikel Bengoa

Swimming pools

Mallorca is a highly populated island of the Balearic archpelago and a major tourist destination, and more than 6% of the island’s surface had been urbanised by 2006.


When investigators examined mosquito populations on Mallorca Island, they found that tiger mosquito's presence was negatively associated with altitude, probably due to greater human presence at low altitudes near the coast. Moreover, the species presence was mainly associated with the presence of fresh water surfaces (mainly swimming pools), due to nearby gardens, plants, and other freshwater sources.  

The authors say that although chlorine or salty water in swimming pools do not represent suitable habitats for the tiger mosquito, the positive association with this variable is likely to be attributable to the gardens associated with these features.  

Citizen intervention essential in controlling the invasion

Lead author Dr Ana Sanz-Aguilar of the University of the Balearic Islands says: “Given the widespread presence of Asian tiger mosquito on Mallorca Island and its association with human activities, the removal of potential breeding sites by citizen intervention will be essential to improve species control.”  


If you like this article, please help us by subscribing and getting the latest updates:

Subscribe to The Thin End by Email

Labels:

Comments

Post a Comment

Popular posts from this blog

Ian Duncan-Smith says he wants to make those on benefits 'better people'!

By any account, the government's austerity strategy is utilitarian. It justifies its approach by the presumed potential ends. It's objective is to cut the deficit, but it has also adopted another objective which is specifically targeted. It seeks to drive people off benefits and 'back to work'.  The two together are toxic to the poorest in society. Those least able to cope are the most affected by the cuts in benefits and the loss of services. It is the coupling of these two strategic aims that make their policies ethically questionable. For, by combining the two, slashing the value of benefits to make budget savings while also changing the benefits system, the highest burden falls on a specific group, those dependent on benefits. For the greater good of the majority, a minority group, those on benefits, are being sacrificed; sacrificed on the altar of austerity. And they are being sacrificed in part so that others may be spared. Utilitarian ethics considers the ba...
7 comments
Read more

Ethical considerations of a National DNA database.

Plans for a national DNA database   will be revealed by the Prime Minister this week. This is the same proposal the Tories and Liberal Democrats opposed when presented by the Blair government because they argued it posed  a threat to civil liberties. This time it is expected to offer an 'opt-out' clause for those who do not wish their data to be stored; exactly how this would operate isn't yet clear. But does it matter and does it really pose a threat to civil liberties? When it comes to biology and ethics we tend to have a distorted view of DNA and genetics. This is for two reasons. The first is that it is thought that our genome somehow represents the individual as a code that then gets translated. This is biologically speaking wrong. DNA is a template and part of the machinery for making proteins. It isn't a code in anything like the sense of being a 'blueprint' or 'book of life'.  Although these metaphors are used often they are just that, metapho...
2 comments
Read more

In praise of social housing and the welfare state

I will declare an interest. I grew up in a one-parent family on a council estate. I occasionally attended my local comprehensive school. I say occasionally because for the most part I played truant. I spent much of my time skipping school but walking and reading on the local common. It had a windmill which I loved. It later had Wombles but that is another story. I contemplated life under the sun. Like many others, I left school at 15 with no qualifications. My penultimate school report said they  'could see no reason why public money should be wasted on the attempted education of this boy'. So I declare this interest of a privileged upbringing. Social housing kept a roof over our heads at a rent mum could (barely) afford; and oh how I recall the days  when she couldn't. She worked all hours to keep that roof over our heads. In those early days of Rock-and-Roll, Bill Haley and the Comets, Adam Faith, Billy Fury, Cliff Richard (yes I was/am a fan), the estate had three c...
2 comments
Read more