Stories tagged entomology

Green June Beetles (before cyber-enhancement)
Green June Beetles (before cyber-enhancement)Courtesy Wikimedia Commons
Unmanned aerial vehicles (UAVs) are commonly used in military operations. Micro air vehicles (MAVs) are a subcategory of UAVs that are currently in development and can be as small as 15 centimeters (~ 5.9 inches); their anticipated uses include search-and-rescue, surveillance, detection of explosives, and monitoring of hazardous environments.

Two researchers from the University of Michigan researchers had an idea: instead of building UAVs the size of an insect, why not use the insects themselves? Professor Khalil Najafi and doctoral student Erkan Aktakka engineered a piezoelectric generator that converted the kinetic energy from the wing movements of a Green June Beetle into electricity (45 µW per insect). Their research was recently published in the paper, "Energy scavenging from insect flight," which appeared in the Journal of Micromechanics and Microengineering.Cyborg Beetle: Through a device invented at the University of Michigan, an insect's wing movements can potentially generate enough electricity to power small devices such as a camera, microphone, or gas sensor.
Cyborg Beetle: Through a device invented at the University of Michigan, an insect's wing movements can potentially generate enough electricity to power small devices such as a camera, microphone, or gas sensor.Courtesy Erkan Aktakka

This research was funded by the Hybrid Insect Micro Electromechanical Systems (HI-MEMS) program of the Defense Advanced Research Projects Agency.

University News Release: Insect cyborgs may become first responders, search and monitor hazardous environs

I know, I know, it's not Friday. But I didn't post the Science Friday video last week. (Or the week before, for that matter, and that one's up next.)

Science Friday
Science FridayCourtesy Science Friday

This week (last week?):

"Crocuses, robins, spring peepers aren't the only creatures to signal spring. We visited the "Insect Compactor" at the American Museum of Natural History in New York to learn about which bugs to look out for as the weather warms. Keep your eyes on the willow trees--that's where early bees like to hang out."
Mar
31
2011

Taxonomy

There's a great article on the Science website that brings up the issue of taxonomy. Taxonomy is the science dealing with the description, identification, naming and classification of organisms. Due to declining funding and a lack of professional practitioners, the article proposes that amateur taxonomists could make significant contributions to understanding the Earth's biodiversity.

The article highlight's the Science Museum's own "professional-amateur" entomologist Ron Huber. Ron's been volunteering his time at the museum since September 1964 and has written a number of scientific publications based on his research on the museum's collection.

Ron Huber
Ron HuberCourtesy Rebecca Newberry, SMM

With 1.4 million animal species scientifically described and with an untold number still to be discovered and described the role of taxonomy is more critical than ever. But there definitely is debate as to whether amateurs are the solution to the problems facing taxonomy. What do you think?

Nov
19
2008

Did you ever wonder what those pesky moths ate before they ate your clothes in your closet? Clothes moths were known previously to feed on dead animals. Recently, scientists also discovered that the casemaking clothes moth, one of the two most common closet menaces, can be helpful in forensic work as well!

The casemaking clothes moth, so named because it makes a fuzzy case-like home for itself as a young caterpillar, will eat human hair and can even feed on corpses. The caterpillars can eat enough hair to identify a body with DNA.

These moths can be particularly helpful if a body is moved to a new location. The caterpillar will move to a nearby spot, away from the body, to make its cocoon. Then, if the body is moved, DNA evidence from the caterpillar in the cocoon can tie the victim to the original location.

More information on this can be found at Science News.

Oct
07
2008

Almost 50 years ago in Canada, a 14-year old boy was sentenced to death for the alleged murder of a 12-year old classmate. The 12-year old was found murdered two days after she was last seen with the 14-year old. Public opinion resulted in the boy being sentenced to life, due to what many thought was an improperly carried out investigation. Some of the evidence from this investigation included photographing and collecting some maggots from the body of the 12-year old. In 2000, the case was reopened.

Part of the research of the defense centers on the maggot evidence collected in 1959. In 2006, the corpses of three pigs were placed at the crime scene to collect additional maggot specimens. For those not in the know with regard to fly lifecycles, the development of a fly from egg to larva (maggot) to pupa to adult is tied to local environmental conditions, such as the temperature. Richard Merritt, a fly specialist from Michigan State University reviewed the specimens and environmental data. After examining the small size of the 1959 maggots, larval growth rates and the temperature, Merritt determined that there was no way that the boy could have committed the murder the day the girl disappeared (the boy had an alibi for the following day).

To check out some maggots in action on a pig corpse, check out Liza's pig cam log on Science Buzz pig!

http://www.smm.org/buzz/topics/forensic-entomology/lizas-pig-cam-log

Oct
06
2006

As I watched the praying mantis crawling on my hand, I noticed something brownish coming out of its bottom. At first I thought it was feces, but then it started wriggling around vigorously. Was it a tapeworm, or some unknown species of worm?

Praying mantis: This isn't the mantis with the hairworm. But any excuse to post a photo of a praying mantis is a good excuse to do it.
Praying mantis: This isn't the mantis with the hairworm. But any excuse to post a photo of a praying mantis is a good excuse to do it.Courtesy CatDancing

We brought the worm home in a bag and searched on the internet. It was a hairworm, a parasite that feeds on the insides of insects and brainwashes the insects into jumping into the water, where it completes its lifecycle. That makes sense because the praying mantis jumped off my hand into a wading pool just before I brought it onto land and the hairworm started coming out.
We've only found examples of hairworms coming out of grasshoppers and rarely emerging from damselfies/dragonflies. Has a hairworm ever before been observed coming out of a praying mantis? I found it on Oct. 4, 2006 at Kyodo no Mori in Fuchu-shi in Tokyo when my 4th grade class from ASIJ was on a field trip.
My name is Elsa and I am nine years old. I want to be either an entemologist or a herpetologist when I grow up.