Tag Archives: water

Neighborhood Mosquito Watch

During a run this week I passed an abandoned, 30-gallon aquarium with easily 10,000 larvae doing their thing (wriggling). I came back later, took some photographs (on my Instagram soon if you’re into that), and then dumped it, sending the larvae to their deaths but also releasing a cloud of perhaps 100 newly-eclosed adults. I suspect the aquarium had been there for years, pumping Asian tiger mosquitoes (Aedes albopictus) into the neighborhood. Given the aquarium’s location at the edge of busy parking lot I’m sure that thousands of people have looked at it and thought, “Huh. Looks like an abandoned aquarium full of dirty water. Next to a Christmas tree. I bet there’s a story there!”, and then moved on with their lives.

Abandoned aquarium with mosquitoes

In case you are unsure what an infestation looks like, the next two photographs show what the adults, larvae, and eggs look like. Asian tiger mosquitoes lay eggs singly on the sides of containers or on moist objects floating on the water. They can last over a year as an egg, waiting for conditions to be just right.

Male Asian tiger mosquito (Aedes albopictus) with larvae

Female Asian tiger mosquito (Aedes albopictus) with larvae and eggs

Here’s a sample of the water I pulled from the tank.

But not all the eggs were Aedes albopictus (there are 60 species in PA alone). Here’s a raft of eggs in the aquarium from a different species (Culex sp.). The raft is lodged on a leaf but normally it just floats around until the larvae pop out. Anopheles (another common genus) has eggs that are deposited singly but float with the help of cute little life preservers.

Raft of mosquito eggs

But that’s not all! Yesterday I found a recycling bin behind a church with similar numbers of larvae. Given the amount of leaves decomposing in the bottom I suspect it has been like this for at least the whole summer. Again, it really is strange that nobody did anything about it. It’s right next to a sidewalk that gets lots of traffic (at least on Sundays) and is probably 10′ away from a playground at an infant/toddler daycare center. Poor kids. (I dumped it.)

Recycling bin with stagnant water

Given how much people hate mosquitoes it left me thinking how the public outreach about mosquito control has failed on the most basic level. Everyone should know enough about mosquito biology to know how and where they breed, and everyone should feel empowered to do something. Being proactive is so much better than adopting what I think is the common view, “Well if the mosquitoes get bad enough I’m sure the government will spray insecticides from planes.

All it would take would be a nicely worded message from a town official to mobilize residents into a mosquito watch. Something like, “If you see mosquito larvae swimming around in a container when you are out walking your dog, please turn the container upside down or alert the owner about it. Thanks.”

For more of my thoughts on mosquito control, please see, “How to rid your yard of mosquitoes.”

Teaching kids about sugar content of beverages

Teaching kids about the sugar content of common drinks should be a requirement in kindergarten or first grade. Here’s one way: have the class construct a display for the hallway or classroom wall that visually shows how much sugar is hidden in common beverages. Like this:

Ideally, also include sweetened milk, apple juice, orange juice, and Gatorade.

Poster titles matter, too. “Rethink your drink” is a popular title (it rhymes) but is bland and doesn’t suggest that drinking less sugar is the ideal. “Avoid cavities by avoiding sugary drinks” or “Don’t drink dessert all day” might be more engaging and informative.

This project would fit in perfectly with most state standards (for example, see page 10 in Health Education Content Standards for California Public Schools). And because it includes numbers (of teaspoons), teachers can use the poster content to visually drive discussions about addition and subtraction. If this poster was done in a fun way, the experience might vaccinate kids against over-consumption of sugary drinks for the remainder of their lives.

If you want some background information relevant to lesson plans on sugar for K-3 levels, here are some resources from BrainPOP. You can pitch the poster completely in terms of dental health. If you are brave and tenured, make the point that drinking sugary beverages causes kids to consume more calories than they expend.

Here are some examples I’ve collected onto a Pinterest board:

Pinterest board Educating kindergartners about sugary drinks on Pinterest.