Showing posts with label epidemics. Show all posts
Showing posts with label epidemics. Show all posts

Saturday, July 30, 2011

The Secret Loss of Bees

There is a family farm in central Virginia that, in addition to providing me with gainful summertime employment, serves as a small patch of paradise for all insects that buzz and bumble.  To the average field hand, the fruits and flowers of this farm guarantee another day of laboring in the sun for salable produce.  To the average honeybee, however, these plants offer a sticky sweet smorgasbord of pleasure.  The lavender induces a state of bee-zen, so that the harvester can gently push aside a bee with her hand without fear of being stung.  The sage bushes host a buzzing, bacchanalian revelry, and the deep orange squash blossoms invite a pollen-to-pollenator embrace that is nothing short of erotic.  It's 50 acres of honey heaven.

Sage and squash plants: everything's PG from a distance.
(Fields at Manakintowne Specialty Growers,
image by Staige Davis)

Sadly, not all of America's bees live such vibrant and blissful lives.  In fact, the last few decades have seen astounding loss in the U.S. bee population, as high as 96 percent.  Investigation into the cause of such wide-scale death is complicated by the fact that there are a great number of things that can wipe out a whole colony of bees, and few of these causes are straightforward.

Wanted: preferably alive.
(Apis mellifera, image by John  D.)

A few culprits are easy enough to identify.  The vampiric Varroa jacobsoni mite has proven particularly damaging to the European honeybees (Apis mellifera) that were established in North America with the colonists.  Tracheal mites (Acarapis woodi) inhabit the bees' respiratory system and slowly suffocate bees from the inside out.  Most bees that are infested with these parasites technically die from viruses that take advantage of the bees in their weakened state.

Scientists call it the Varroa destructor.  Seriously.

Tracheal mites give new meaning to
the term "a tickle in your throat."

Other culprits are more complex.  Monoculture crop production, which dominates American agriculture, eliminates weeds and other crops that serve as both valuable foraging plants and natural habitat for wild and domesticated bees.  Additionally, conventional agriculture relies on heavy pesticide application, which kills beneficial pollinators as well as pest insects.  The irony is that many of these crops cannot develop without the assistance of pollination by bees, so farmers are forced to import bee hives from all corners of the country and globe to pollenate their crops.  (It's a nerdgasm-inducing global exchange of ecological resources.  Read more about the migratory beekeeping industry and California almond production here.  Check out a documentary here.)

Think of the bee as almond flower Viagra.
*Call your entomologist if pollination lasts longer than 4 hours.

But the most mysterious of all bee killers may also be the most worrisome.  2006 saw particularly high declines in bee population.  Beekeepers reported finding their hives completely devoid of all adult bees with no explanation.  No dead bees on the ground.  No signs of infestation.  The bees simply gone.  This veritable bee-Rapture was christened "colony collapse disorder" (CCD) in 2007, and scientists continue to investigate the causes with no definitive answers.  It's a tragedy that evokes the sort of mournful folk tunes my grandfather used to sing.

Bee-Rapture is a serious threat.
(Image by Lenin and McCarthy)

The folk tune and biblical billboard may seem melodramatic, but one-third of food eaten in America depends on bee-pollenation.  The list probably includes some of your favorite fruits and veggies such as apples, oranges, cherries, blueberries, cranberries, plums, avocados, raspberries, blackberries, almonds, anything that grows on a vine- squash, zucchini, watermelon, pumpkins, cantaloupe, and on, and on, and on.  If you're getting anywhere near your recommended 5 to 7 daily veggie servings, then you eat bee-pollenated foods.  To learn more about CCD and the disappearance of America's bees, check out these resources from Ohio State University, join The Honeybee Conservancy, or consider a do-it-at-home project like a bee garden.  Or take it from someone who really knows his stuff, and check out this idea worth spreading from Dennis vanEngelsdorp.


The meadow he talks about at the end of his presentation?  That's otherwise known as a freedom lawn!  Maybe we can't all offer the honeybees a conjugal bed of tender squash blossoms, but perhaps we can all agree that no one in their right mind needs to mow their lawn in July.  It's flippin' hot out there.

Thursday, July 21, 2011

F as in, "Fudgesicles! We're going to need a bigger scale."

It's no secret that modern America is one of the most overweight nations in all of recorded history.  The question many still grapple with is how and why?

The website-turned-coffee-table-book This Is Why You're Fat offers one explanation of how the citizens grew their paunch.  The brilliantly simplistic book displays photographs of extraordinary junk foods to the tune of bacon cheeseburgers on glazed-doughnut "buns" and gravy-smothered pizza.  (Recipes are kindly provided.)  The text is minimal, but the social commentary is painfully apparent.  Whether a book of photographs that literally glisten with grease is worth your money is entirely up to you.

A fresh take on the sweet-and-salty combo.

The Robert Wood Johnson Foundation and the Trust For America's Health have taken a slightly less stomach-turning approach to tackling the obesity question.  The eighth annual edition of their nation-wide obesity study F as in Fat: How Obesity Threaten's America's Future was released earlier this month, and the results are alarming.  Currently, two-thirds of adults and almost one-third of children and teens in America are overweight or obese. (Obesity is defined as having a BMI of 30 or greater.)

The shape of the nation.  Round is a shape.
(Image by Alexander Gerl)

If you're the type of person who occasionally spends time in public places, this statistic might not surprise or upset you.  The report repeatedly emphasizes that to understand the gravity of America's obesity epidemic, you must consider obesity trends over time.  Just twenty years ago, not one state had an obesity rate above 15 percent.  Today, twelve states have obesity rates over 30 percent, Mississippi topping the list with a hefty 34.4 percent.  Additionally, only one state has a rate below 20 percent: Colorado at 19.8.  What exactly happened to Americans in the past two decades?

Everyone's bigger in Mississippi.

The 121-page report parses and presents state-by-state obesity data in every combination imaginable- by sex, age, ethnicity, socioeconomic status, location, activity level, religion, etc.  It also raises serious political and ethical questions that need to be addressed.  Is it ethical to deny someone a job because of their weight?  Can insurance companies establish fees to "punish" those who do not take steps to reduce their weight?  What regulations should be placed on food served in public schools?  Who should pay for the increased healthcare costs?

Mystery Veggie: Your tax dollars at work.
(Image by Beau Wade)

What I like most about this report is how it shows that obesity is a national epidemic, rather than a sign of personal failure.  If you don't believe me, watch this CDC animation, which tracks the spread of obesity across the nation since 1985.  It gives you a sense of just how severe and widely-spread the problem is.
This is not the result of hundreds of millions of Americans just deciding that they'd rather be lazy and gluttonous.  It's the result of fundamental changes in the way our society moves, eats, and thinks, and it's going to take more fundamental changes to get us back on the right track.

Eerily similar to the spread of bubonic plague.

What are the right changes?  Well, I wish I knew for sure.  The report offers some basic policy prescriptions (see page 4.)  Michelle Obama has some good ideas for the kids.  Stopping the spread of obesity in America will require personal struggles, family and community support, medical research, national legislation, and who knows what else.  This is one epidemic that won't be cured with a quick vaccination, but it is undoubtedly one worth fighting.

Rest easy, kids!  No shots this time.

Reports also indicate that long periods of time spent in front of your laptop screen increase the likelihood of your backside becoming one with your chair.  I think I'll go outside and play now.

Obesity also strikes in the great outdoors.
(Image by James Marvin Phelps)