Sorry for the shameless Mass Effect reference in the title!
A recent study by Fiona Cross, from the University of Canterbury, and Robert Jackson, from the International Centre of Insect Physiology and Ecology (ICIPE) in Kenya, revealed that like it’s prey, Evarcha culicivora (aka. The Vampire Spider) loves the smell of human sweat. So to find it’s favorite food, this little jumping-spider has developed a love for your smelly socks! (Source: Live Science)

What a cutie! (unsure who the photo belongs to if it’s yours, please let me know so I can credit)
OK, so not only is this an interesting bit of news (and a cute picture!) but it starts off the real reason I’m posing this quite nicely. E. culicivora is known to target Mosquitoes who are engorged with blood. Not only that but ones who are infected with the Malaria parasite. Scientists are recommending people welcome these spiders into their homes. But without Mosquitoes, there will be no spiders. Better get your stinky feet out then!
Those of you that read the news regularly might have heard the term ‘Flying Vaccinator’ where Anopheles Mosquitoes and Malaria are being discussed. Genetic engineers have been attempting to mutate the insect’s mucus glands to produce a vaccine which will combat the Malaria virus. Research has so-far been fruitless. Although this genetic modification, in my opinion, is immoral. I dislike it a whole lot less than the method that has recently been deployed in South-East Asia to combat Dengue Fever. What menthod is that do you ask? Well, scientists have modified the male Aedes aegypti Mosquito, so that any larvae he produces will die before adulthood. Krogen Genophage anyone? Sorry, I just had to throw in some Mass Effect geekery!
Oxitec, the company leading this program, have reported that since the trail in Malaysia, the population of the Dengue Fever-carrying Mosquito has dropped by 80%. That is a enormous number! In fact, I am interested to see what this huge drop in population has done to the ecosystem. Another point is that by reducing the numbers of just one species Mosquito, they pave the way for other Malaria carrying Mosquitoes to proliferate.
Don’t get me wrong, the human fatalities caused by Malaria and Dengue fever are terrible. Dengue fever in particular currently has no vaccine and has numerous variants of the virus, however is not always fatal. But I can’t help thinking there must be a better way to combat these diseases than Genetically Modifying a creature, destroying habitats and adding insecticides to water ways.
Part of the reason there are so many Mosquitoes is because there is so much food for them! Over-population and the destruction of alternative food sources (wildlife), means that there’s always a steady source of human blood for them to feast on, thus spreading diseases faster. Then again, over-population is a problem I don’t want to get started on! Maybe this sterilization method might be lass harmful than I think, but only time will tell.
You can read more about this on Discovery News.