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Tom Radocy
Undergraduate Student
Entomology
Biodiversity Institute

Contact Information

I am a senior at KU with a wide range of interests in evolutionary biology, ecology, and systematics.  My first research experience involved an ecological niche modeling project conducted with Dr. A. Townsend Peterson. The objective was to determine future shifts in potential African lion habitats as a response to climate change.  I've since become interested in medical entomology and, with the encouragement of Dr. Chaboo, this led me to my next undertaking - a survey of Peruvian mosquitoes.  While there, I collected as many mossies as possible - much to the delight of others at our station!  Such surveys are an important step towards assessing the threat of mosquito-borne diseases in a region. 
 
Future plans include a similar project that will take place in the Daintree lowlands of far north Queensland, Australia.  Here, I will study mosquito-host community assembly across different microhabitats. 

Recent Blog Posts

June 28, 2011
Why mosquitoes?  Of all the amazing and beautiful rain forest animals to...
June 18, 2011
Just prior to leaving for Peru, I was told of the exceptional cuisine that Lima...
June 11, 2011
I used to be terrified of bees and wasps. If I was playing in the yard and I...

Mosquito biology and systematics; ecological niche modelling (GIS, ArcMap10)

Radocy TA & CS Chaboo. In Review. Checklist of Mosquitoes (Diptera: Culicidae) of the southeastern Amazon, Peru.

Jalinsky J, TA Radocy, R Wertenberger, & CS Chaboo. In Review. Insect diversity in phytotelmata habitats of two host plants, Heliconia stricta Huber (Heliconiaceae) and Calathea lutea Schult (Marantaceae) in the south-east amazon of Peru.

Peterson AT, TA Radocy, E Hall, JP Kerbis, & GG Celesia. In Review. Predicted African Lion Distribution in the Face of Global Climate Change. Animal Conservation.

 

June 28, 2011

Why mosquitoes?  Of all the amazing and beautiful rain forest animals to study, why would anyone want to work with this lowly, annoying bug that drives us crazy while sitting on porches on summer evenings?  They spread disease, too.  Why would anyone want to mess with that?

True.  Mosquitoes can spread disease. That is itself a reason to study them.  They have been responsible for countless deaths throughout the centuries and, sadly, continue to be responsible for millions today, mainly in the world’s tropical zones.  Malaria alone causes nearly one million deaths each year. 

As a student of biology, I have learned through my courses that the world’s “maneaters” and “creepy crawlies” often get a biased treatment from those that may not be so familiar with them.  I hope to change that perspective a little bit.  Yes…even the “lowly” mosquito gets a little love here.

I remember when it surprised me to learn that not all mosquitoes suck blood.  Both males and females feed on plant juices and nectar.  Given that they feed on nectar, they act as pollinators.  Some may not feed at all.  It is the female that takes in blood, and she does this to lay eggs.  Blood provides iron and protein, which allows her to lay a batch of eggs larger than what would otherwise be possible on a diet of nectar alone.  Of course, being a bloodsucker has its drawbacks – Bzzzz…SLAP! –, and many species of mosquito don’t take in blood at all.  The mosquito genus Toxorhynchites includes unusually large mosquito species – none of which suck blood.  Their larvae are actually predatory (unusual for mosquito larvae) and feed on other mosquito larvae, earning them the nickname, “mosquito hawk.”  In fact, this behavior of mosquito larvae-eating has earned them the honor of being introduced into regions where the disease-carrying species, Aedes aegypti, lives.

My project asks two questions: What species are there? Where are they going?  The first part is pretty straightforward, as I collect specimens around CICRA to get an idea of what mosquito diversity is in this area.  So far, much of the diversity information comes from the areas around Iquitos, Peru, a city located in the northeastern section of the country.  Being located in the southeastern portion of the country, CICRA is a good location to sample the diversity at the opposite end. 

The “Where are they going?” portion will be tackled at the KU Natural History Museum after the specimens are identified and mounted for examination.  All life forms require certain biological parameters for them to thrive (ie. temperature, rainfall, soil content, etc.) and the regions where these parameters exist can be mapped.  This provides a picture of potential habitats for any species.  We can then track how these parameters change in response to things like climate shifts and urbanization, and therefore the change in a species distribution.  If we know that areas of a wet habitat will become dry in response to climate change, for example, we can track the potential shift in distribution of a species that requires a wet environment.  As portions of the rain forest become urbanized – such as by the construction of the transatlantic highway – it affects the distributions of its inhabitants.  This has additional consequences to human health in the case of disease-carrying mosquitoes, as an increased human presence means more opportunities for infection and for outbreaks to occur.  Such outbreaks of diseases like yellow fever and malaria (mosquito-borne diseases once eradicated from Peru) have sprung up in recent years.  These are reemerging diseases. 

 

 



So, there I sit…at a desk in our lab in the Amazon, tapping my vial to empty it of its mosquito contents.  Hopefully, these guys (or girls) will aid our attempt to find out which species exist here – both bad and not so bad – and where they may be headed in the future.           

        
 

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June 18, 2011
Just prior to leaving for Peru, I was told of the exceptional cuisine that Lima had to offer.  Before, I learned...
June 11, 2011
I used to be terrified of bees and wasps. If I was playing in the yard and I saw a wasp in the neighbor’s bushes...

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