Showing posts with label Mosquitoes. Show all posts
Showing posts with label Mosquitoes. Show all posts

Thursday, June 2, 2016

Mosquitoes and the Food Chain

I spend considerable time in Northwest Wyoming where growing populations of grizzlies and black bears remind me humans are not the dominant species in the Greater Yellowstone Eco-system. Every year a hiker or hunter runs into a creature that thinks Homo sapiens are a food source. Prepared individuals have their bear spray or weapon close at hand to fend off such unwanted attention. Unfortunately, locals tell stories about those surprised by these beasts who don’t survive the encounter. Such tales set a nervous person on edge, but recent news reports about insect-borne damage and disease make me realize these mammals aren’t humans’ worst nightmare.

It’s bad enough to think about a colony of termites silently chomping their way through the wood supports in your home, wreaking havoc. I know an individual who bought an older residence and began remodeling only to discover millions of these tiny creatures digested his studs and supports into a holey mess. Even if homeowners find these insects in time to prevent massive structural damage, they’ll pay a pretty penny to destroy the colony and then fund maintenance treatments to keep future invaders away forever.

In another creepy-crawly story, a family we know recently discovered bed bugs hitchhiked home with them from their workplace. Fortunately, they caught the infestation early, but again it was a financial drain to wipe out these uninvited bloodsuckers. Just thinking about them makes me itch so I’m sure those fighting them directly suffered worse mental tortures.

While the mammals and bugs I’ve mentioned inflict horrific damage, newspaper stories from around the world inform us that nasty as they are these aren’t our worst fears. Aedes mosquitoes, known in the past because they transmit yellow fever, also carry the Zika virus and produce nearly as many headlines as current political candidates do. Scientists first identified this disease in the Zika Forest in Uganda in the 1940s. Since then, it has spread to multiple continents, most recently including South and Central America, Mexico, and the Caribbean. Southern America is on the radar.

In most cases, this disease related to dengue fever and West Nile virus causes unremarkable symptoms such as mild headaches, joint pains, and reddened eyes. In many cases, victims don’t even know they contracted it, or if they do, a Tylenol handles their complaints. In worst-case scenarios, the pathogen passes through a mother’s placenta to her fetus, causing microcephaly, a condition resulting in intellectual and motor disabilities. Concerns about this life-altering issue are affecting fertile women’s travel plans and attendance at the upcoming summer Olympics in Brazil.

When I read about young mothers delivering infants affected by this virus, I realize my fear of bears is over-rated. After all, in bear country, I have control. I carry pepper spray any time I’m in their territory and know if I use it correctly, the spritzed critter will race away. At this point, humans can also manage termite and bedbug infestations even if it puts a whammy on bank accounts and sets imaginations on overdrive.

Unfortunately, civilization hasn’t won the mosquito wars. We still battle malaria and yellow fever, and now we know these winged destroyers transfer a virus that humans can pass to their unborn with disastrous results. It’s beyond humbling to acknowledge something as small as a mosquito owns the top of the food chain.


Sunday, August 2, 2015

Unexpectedly Hosting a Mosquito Picnic



We’ve traveled lately and discovered how green the plains and arid Rockies can get when spring rains fall regularly and plentifully. For folks used to mostly desert-like conditions, it’s a thrill to see Kansas, Nebraska, and Wyoming pastures and meadows lush with belly high to a deer grasses and wildflowers blooming in every hue. What we didn’t enjoy was a mosquito ambush at an isolated rest stop.

For those of us used to lower elevations, it’s important to drink plenty of fluids when visiting higher altitudes. During this trip, I intentionally saturated my cells with water during and between meals to avoid those unpleasant headaches. Unfortunately, that also means a few more pit stops during a journey. One of those led to an adventure I’d just as soon have skipped.

The stretch between Rawlins and Lander Wyoming doesn’t have many options for travelers with full bladders, but the Department of Transportation has conveniently positioned a rest area at Split Rock. This pit stop offers tourists not only relief but a chance to learn something about local history and the environmental. Incidentally, it provided us a chance to meet at least a million newly hatched, starving mosquitoes.

When we drove into the empty parking lot, I was glad I didn’t have to wait in line for a turn at the one-holer. Even though my mind was on urgent matters like direct access to the facility, I did notice a cloud of small insects swarming the area. The part of my brain that could still analyze, thought, heck there’s a fresh caddis fly hatch in the area. After all, we weren’t far from the Sweet Water River, which currently has more water in it than I’ve ever seen.

Too bad my brain was so focused on finding a toilet. If it had been more alert, I might have realized I was about to discover I was the answer to starving mosquitoes’ prayers. Who knows how long it had been since they’d had a warm-blooded victim—perhaps since the last wagon train going down the Oregon Trail way back when.

The minute I got out and recognized these weren’t caddis flies, I raced to the door of the outhouse. Once inside, I had only a thousand or so vampires to contend with. I focused on relief while waving strips of toilet paper like a wimpy pompom to hold those hungry beasts at bay. I didn’t want the buggers to take advantage of the situation.

Afterwards, I fought my way back to the car through that horde of bloodsuckers. To  my husband’s distress, a hundred or so stuck close enough to me that they flew into the Toyota despite frantic slapping, arm waving, head jerking and other spastic movements that made it look as though I had a severe case of St. Vitus’s Chorea.

As I slammed the door, my spouse built speed on the highway while rolling down the windows. He intended to use cross ventilation to force invaders out to the green sagebrush flats where they could look for other victims. At least 90 percent exited. Unfortunately, we found ourselves periodically swatting and swiping as tough holdouts came out one by one to torture us.

With all the moisture we’ve had this year, I’m sure this isn’t my last brush with hungry insects. I’m thinking about investing in a case of DEET and making a lanyard to wear it around my neck all summer.