CAT | The Natural World
This morning, I had a craving for pâté on toast. Weird maybe, but not as weird as what I found on the pâté, which has been sitting in the refrigerator too long. Mold! I though it would be fun to see what it looks like under one of our new Explorer handheld digital microscopes and before I knew it, I was seeing strange faces in the images.
These images were taken using an Explorer Pro 1 which includes 1.3MP resolution and 10x-50x, 200x variable magnification. It took all of a few seconds to set up and I have been dodging ‘real work’ while I played with it. But it is the day before Thanksgiving, after all!
That’s what I like about these Explorer microscopes. They are easy and fun to use while you can explore all sorts of items around your house and garden.
Have a Happy Thanksgiving and may your turkey be absent any sign of mold.
Clearing Fall leaves is a thankless task so reward yourself by selecting a few of the more colorful leaves to view under a microscope.
Within seconds you will see what could be satellite images of Earth, the leathery skin of an exotic lizard or is that a giant maw, close up and in full color? The colors look glorious on the trees, but under the microscope the full detail is revealed.
The technique is simple. You simply place a leaf under a stereo microscope or, as with these images, under our new Explorer Series of handheld digital microscopes. We have packaged the Explorers with a range of engaging accessories for the Holidays, all at reduced prices.
It’s a great way to engage your kids during a blustery afternoon. Our family has an annual tradition of catching falling leaves. It can get quite competitive – first to catch ten – but it’s good fun and great exercise.
It also leads in easily to us all gathered round the microscope to check out the various leaves we have collected. It’s such a relief to hear cries of “Wow, that’s so cool” from other than an X-Box game!
The Seasons offer a wealth of such specimens to view under a microscope……next up, at least in the North East,….examining snowflakes!
Danny brought in this beauty, last week and we took the opportunity to snap a few images under various microscopes. It looks intimidating, but is harmless in spite of the females having a large stinger. It is an Eastern Cicada Killer wasp, which exists to cull some of the annual cicada population. The female uses her stinger to paralyze a cicada prior to flying it back to her nest which is an amazing sight since the cicada is typically significantly larger than the wasp itself. As a result, she hauls it up a tree and then launches herself off towards her burrow, often repeating this laborious process several times in order to get there. Each male egg gets one cicada and each female at least two cicadas. Unsurprisingly, the female wasps are larger than the males.
You can always identify cicada killer wasps not only due to their size (up to two inches), but due to their burrows which always have a mound of earth outside along with a characteristic trench running through it to the hole. And there will be lots of them, too…….thousands at our last house!
As you can see, up close under a microscope, they are beautiful. The spines on their legs serve to help the females dig their burrows. They use their powerful jaws to loosen the soil and then excavate the soil using their legs. Hence the mound outside although they also use excavated earth to seal their egg chambers.
We used a Dino-Lite AM4113T to view this one as well as one of our new Explorer Pro digital microscopes that we will be launching soon.
Insects seem to be a perennial favorite of my blogs including ticks so how could I resist posting on these disgusting examples?! Rhonda is responsible for bringing these guys to work, but in case you are wondering…… she picked them off her dog and put them in a Zip Lock bag. We could see dozens of them inside the bag and when examined under a digital microscope, we could see them all crawling around.
You can see quite clearly how engorged the two ticks on the right have become after a good feeding on dog’s blood. The other one, below has not yet started its blood meal so it has yet to engorge itself.
Ticks have only one blood meal each year, but they take their time when they do or, at least, the females do. These are nymph ticks. In their nymph state both males and females have a good blood meal. Next year, only the females have a really big blood meal. Most of the adult males eat sparingly, which is why it is important to know the difference between male and female ticks. Female ticks spend more time eating and so have more time to transmit the bacterium. Females typically have reddish orange coloring. Males have minimal if any coloring beyond black. However, I don’t think we will be adding this lot to our collection of insects in the office. Black widow spiders and rhino beetles are worth keeping, but ticks….I think not! The ticks were viewed under our new Explorer Digital Microscopes which we will launch soon.
The movie Jurassic Park gave us all a thrilling look into the world of dinosaurs, some of the largest creatures to walk the Earth. The ingenious storyline brings them back to life with a little help from a miniature supporting actor whom every one of us has already met, the ordinary mosquito.
Since its appearance on the planet 100 million years ago, the mosquito has diversified into 3,000 very different species. There are about 170 different kinds of mosquitoes in North America alone, most of which (or so it may seem) can be found right outside your tent at summer camp.
On a more serious note, these very unwelcome pests and their irritating bites are not to be taken lightly. They carry a parasite known as Plasmodium, which causes malaria in millions and millions of humans. According to the World Health Organization, there were about 219 million cases of malaria worldwide in 2010 and an estimated 660,000 deaths, more than 90% of which occurred in Africa.
Here in the States, the Centers for Disease Control reports that mosquitoes cause 1,500 new cases of Malaria each year, along with several types of encephalitis and West Nile virus. Malaria symptoms tend to make their appearance 9-12 days after a person has been infected. First signs include fever, headache, chills and vomiting, symptoms very similar to the common Flu virus. This can make early detection a challenge.
Malaria can, however, be easily identified with a compound microscope like the Omano OM36 or OM88. The gold standard for malaria identification rests in the laboratory, where testing of a patient’s blood smear can yield timely and life-saving diagnostic information. The technique involves 1000X examination of a thick or thin blood smear which has been stained with a Romanovsky stain such as Giemsa. Infected red blood cells will show the telltale presence of darkly-spotted Plasmodium parasites.
Fortunately there are a number of steps we can take to avoid the risk of mosquito-borne diseases and some of the more effective methods involve working directly with Mother Nature herself. First, try to eliminate areas where mosquitoes lay their eggs, like puddles, old tires, children’s play pools, rain gutters and mud puddles. Refresh your bird baths, wading pools and pet drinking dishes at least once a week. For those backyard lily ponds or water gardens, consider using a naturally occurring bacterium like BT (bacillus thuringiensis). Found in most garden centers, BT is nontoxic to people and fish, yet kills mosquito larvae on contact.
As for protecting yourself, it helps to keep in mind that 100 million years of evolution have turned the mosquito into an excellent blood-hunter. They instinctively home in on areas of the body where your skin is thin and blood vessels are close to the surface. Which means your uncovered, untreated ears, neck, ankles, arms and wrists act like ringing dinner bells.
You can swiftly silence those bells by covering up in loose-fitting light-colored clothing or applying herb-based treatments. Lemon eucalyptus, for example, is rated by the Centers for Disease Control as one of the best choices for protection against West Nile virus. Just remember, even though the mosquito may have out-lived the dinosaurs, with a bit of planning you can minimize their intrusion in your outdoor activities this summer.
Any day now, an invasion will begin. Unsuspecting people up and down the Eastern seaboard from New England to North Carolina will run for cover. Weddings will be interrupted. The news channels will work themselves into a frenzy – and your lawns, trees and gardens will buzz with bulging, red-eyed invaders. Martians? No. Simply, the hatching of billions of Magicicadas.
For the past 17 years, billions of the inch-long bugs, which entomologists ominously refer to as “Brood II”, have been lying dormant underfoot. Quietly munching away on tree roots and vegetation 2-3 feet below us, they have awaited Mother Nature’s call to complete their 17 year life cycle.
That call happens when the soil temperature in their underground home climbs above 64 degrees Fahrenheit. Over the course of the next few weeks, billions of them will emerge and swarm with the primeval goal of mating before they die. Despite their ghoulish looks, they actually are quite harmless to humans and animals. For the most part, they hang out in trees and shrubs for a few weeks and then die, at which time their offspring venture underground to begin another 17-year cycle.
Even though this year’s brood is forecast to number in the billions, most of us won’t even see them. We most definitely will hear them. The male Cicada makes music by pushing air through vibrating organs in their abdomen, and quite effectively at that. As they sing their mating cry, a tree filled with males can fill the evening with sound volume approaching 90 decibels!
Apart from their rare appearance and song, what exactly are Cicadas good for besides water-cooler commentary? Well for starters, they’re edible! They are eaten by a wide variety of animals…….including humans. While not quite rising to the popularity of chocolate-covered crickets, they still hold their own at the adventurous dinner table. In fact their hearty flavor, which some intrepid souls describe as asparagus-like, can be found in a surprising variety of dishes like cheese, quiche, casseroles and
even dessert, for those ardent aficionados. Apparently, they are best eaten immediately after hatching which typically, occurs at night. Luckily, they are quite torpid after hatching so they can easily be scraped off the tree branches.
Abundant food, totally organic, nutritious, free and hilarious……..it didn’t take long for us here at Microscope.com to decide to hold a contest for the best Cicada recipe.
So dust off your family’s favorite Cicada recipe and send it in. We’d love to hear about it and you could have a chance to win a new microscope. One more reason to enjoy this “Season of the Cicada”…or should that be Cicada Seasoning? Bon Appetite!
Just send us an email, with recipe attached, to [email protected], anytime between now and the June 15, for your chance to win a new Omano OM115 compound microscope. The winner will be announced in a followup blog post.
Following my recent blog article on deer ticks @scientificamerican, a reader commented that there was no mention of the miracle of the Western Fence Swift , more commonly known as the Bluebellied Lizard. Being a Brit and having lived on the East Coast for the past 20 years, I had never heard of it before, but it is an amazing story.
Lyme disease, characterized by fever, headache, fatigue and a bullseye rash, is spread through the bite of ticks infected with the bacterium, Borrelia burgdorferi. However in the western US, the Western Fence Swift actually cleanses the tick of the bacteria. Apparently, the swift has a protein that kills Borrelia burgdorferi as it feeds on the swift’s blood.
Since 90% of nymph ticks feed on the lizard, it has always been assumed that the presence of the fence swift has accounted for the lower incidence of Lyme Disease in the western states. Unfortunately, over the past few years the numbers of western fence swift have been declining. As a result, the concern has been that there would be a corresponding increase in Lyme disease infections. However, a 2011 UC Berkeley study found that 95% of nymph ticks failed to find another host and presumably died. Such is the complexity of Nature and disease.
An amazing image of an ant lifting 100 times its body weight has won first prize in a science photography contest.
Who would have thought that hammerhead sharks have so much in common with a binocular microscope? Remarkable new research by Dr Michelle McComb, Florida Atlantic University demonstrates that contrary to previous thinking, hammerhead sharks have terrific binocular vision. They can also see through the entire vertical plane – up and down! As if that isn’t enough, with a marginal turn of their head, they can see backwards too. Now there’s an idea for a microscope! See the full article at http://news.bbc.co.uk/earth/hi/earth_news/newsid_8376000/8376740.stm