insects
awild | September 17, 2009
Cimex lectularius - the common bedbug
Bed bugs are back. The resurgence of these blood-feeding pests is perhaps the biggest entomological story of the past decade. Take a look, for instance, at the Google search volume for "bed bugs" over the past few years:
Google Trends shows an increase in bed bug interest relative to other pests, 2004-2009
Why am I telling you all of this?
I've just posted a new online bed bug photo gallery. I was fortunate to get my hands on a vial of live bed bugs recently, and it turns out that the little guys are excellent entomological models. Cute, cuddly…
awild | September 16, 2009Lethocerus sp., California
I don't know how I missed it when it came out, but The Dragonfly Woman has a post up on how to identify the three North American genera of giant water bugs. Check it out.
ejohnson | September 15, 2009
A scanning electron microscope image of a monarch butterfly wing.
Since a scanning electron microscope only collects a black and white image (representing intensity of electrons) the image must be colorized with photoshop. The colors are fairly close to the real colors of the wing.
The wing is composed of scales or platelets that in turn have a micro structure that creates turbulence as the wing moves through the air. The turbulence is responsible for decreasing drag on the wing and allows the butterfly to move with less energy.
Monarch Butterflies are native to North America where they…
grrlscientist | September 11, 2009The cricket sang,
And set the sun,
And workmen finished, one by one,
Their seam the day upon.
The low grass loaded with the dew,
The twilight stood as strangers do
With hat in hand, polite and new,
To stay as if, or go.
A vastness, as a neighbor, came,--
A wisdom without face or name,
A peace, as hemispheres at home,--
And so the night became.
~ Emily Dickinson
This is the cutest event I've heard of for NYC: a night spent counting crickets and katydids.
What: NYC Cricket Crawl (counting 7 species of crickets and katydids in NYC)Where: New York City areaWhen: Friday, 11 September 2009 at 7:…
grrlscientist | September 10, 2009The cricket sang,
And set the sun,
And workmen finished, one by one,
Their seam the day upon.
The low grass loaded with the dew,
The twilight stood as strangers do
With hat in hand, polite and new,
To stay as if, or go.
A vastness, as a neighbor, came,--
A wisdom without face or name,
A peace, as hemispheres at home,--
And so the night became.
~ Emily Dickinson
This is the cutest event I've heard of for NYC: a night spent counting crickets and katydids.
What: NYC Cricket Crawl (counting 7 species of crickets and katydids in NYC)Where: New York City areaWhen: Friday, 11 September 2009 at 7:…
edyong | September 10, 2009The drawers of the world's museums are full of pinned, preserved and catalogued insects. These collections are more than just graveyards - they are a record of evolutionary battles waged between animals and their parasites. Today, these long-dead specimens act as "silent witnesses of evolutionary change", willing to tell their story to any biologist who knows the right question to ask.
This time round, the biologist was Emily Hornett, currently at UCL, and her question was "How have the ratios of male butterflies to female ones changed over time?" You would think that the sex ratios of…
clock | September 10, 2009At the NC Museum of Natural Sciences:
What's Bugging You? Animals We Love to Hate
Wednesday, September 30, 2009
8:00 - 10:00 am with discussion beginning at 9:00 followed by Q&A
Location: The Acro Cafe - 4th Floor of the Museum of Natural Sciences
Fire ants. Mosquitoes. Flies. Ticks. Gnats. Bed Bugs. The list goes on and on.
They disturb our sleep, sting us, envenomate us, suck our blood, eat our food, crawl on us...yet at the same time, they pollinate our food and flowers, provide insect control, and increase biodiversity. So, what is a pest? Are some of these pests invasive…
grrlscientist | September 9, 2009The cricket sang,
And set the sun,
And workmen finished, one by one,
Their seam the day upon.
The low grass loaded with the dew,
The twilight stood as strangers do
With hat in hand, polite and new,
To stay as if, or go.
A vastness, as a neighbor, came,--
A wisdom without face or name,
A peace, as hemispheres at home,--
And so the night became.
~ Emily Dickinson
This is the cutest event I've heard of for NYC: a night spent counting crickets and katydids.
What: NYC Cricket Crawl (counting 7 species of crickets and katydids in NYC)Where: New York City areaWhen: Friday, 11 September 2009 at 7:…
grrlscientist | September 7, 2009The cricket sang,
And set the sun,
And workmen finished, one by one,
Their seam the day upon.
The low grass loaded with the dew,
The twilight stood as strangers do
With hat in hand, polite and new,
To stay as if, or go.
A vastness, as a neighbor, came,--
A wisdom without face or name,
A peace, as hemispheres at home,--
And so the night became.
~ Emily Dickinson
This is the cutest event I've heard of for NYC: a night spent counting crickets and katydids.
What: NYC Cricket Crawl (counting 7 species of crickets and katydids in NYC)Where: New York City areaWhen: Friday, 11 September 2009 at 7:…
grrlscientist | September 4, 2009The cricket sang,
And set the sun,
And workmen finished, one by one,
Their seam the day upon.
The low grass loaded with the dew,
The twilight stood as strangers do
With hat in hand, polite and new,
To stay as if, or go.
A vastness, as a neighbor, came,--
A wisdom without face or name,
A peace, as hemispheres at home,--
And so the night became.
~ Emily Dickinson
This is the cutest event I've heard of for NYC: a night spent counting crickets and katydids.
What: NYC Cricket Crawl (counting 7 species of crickets and katydids in NYC)Where: New York City areaWhen: Friday, 11 September 2009 at 7:…
grrlscientist | August 31, 2009The cricket sang,
And set the sun,
And workmen finished, one by one,
Their seam the day upon.
The low grass loaded with the dew,
The twilight stood as strangers do
With hat in hand, polite and new,
To stay as if, or go.
A vastness, as a neighbor, came,--
A wisdom without face or name,
A peace, as hemispheres at home,--
And so the night became.
~ Emily Dickinson
This is the cutest event I've heard of for NYC: a night spent counting crickets and katydids.
What: NYC Cricket Crawl (counting 7 species of crickets and katydids in NYC)Where: New York City areaWhen: Friday, 11 September 2009 at 7:…
grrlscientist | August 28, 2009The cricket sang,
And set the sun,
And workmen finished, one by one,
Their seam the day upon.
The low grass loaded with the dew,
The twilight stood as strangers do
With hat in hand, polite and new,
To stay as if, or go.
A vastness, as a neighbor, came,--
A wisdom without face or name,
A peace, as hemispheres at home,--
And so the night became.
~ Emily Dickinson
This is the cutest event I've heard of for NYC: a night spent counting crickets and katydids.
What: NYC Cricket Crawl (counting 7 species of crickets and katydids in NYC)Where: New York City areaWhen: Friday, 11 September 2009 at 7:…
grrlscientist | August 28, 2009tags: bumblebee, Helsinki, Finland, cities, nature
Bumblebee on my hand.
Photographed in Helsinki, Finland.
Image: GrrlScientist, 23 July 2009 [larger view]. (raw image)
I am sure I must have looked like I was insane when, walking down the sidewalk, I spied this bumblebee sitting on the concrete. I plopped myself down onto my hands and knees on the sidewalk and spent a few minutes nose-to-nose with her, trying to figure out if she was dying because she was hurt or old (or maybe she was just resting?). She looked to be in good repair, so I got her onto my hand to photograph her. It's not…
grrlscientist | August 26, 2009The cricket sang,
And set the sun,
And workmen finished, one by one,
Their seam the day upon.
The low grass loaded with the dew,
The twilight stood as strangers do
With hat in hand, polite and new,
To stay as if, or go.
A vastness, as a neighbor, came,--
A wisdom without face or name,
A peace, as hemispheres at home,--
And so the night became.
~ Emily Dickinson
This is the cutest event I've heard of for NYC: a night spent counting crickets and katydids.
What: NYC Cricket Crawl (counting 7 species of crickets and katydids in NYC)Where: New York City areaWhen: Friday, 11 September 2009 at 7:…
edyong | August 25, 2009Since late 2006, honeybees in Europe and North America have been mysteriously disappearing. Once abuzz with activity, hives suddenly turned into honeycombed Marie Celestes. They still had plentiful supplies of honey, pollen and youngsters but the adult workers vanished with no traces of their bodies. The phenomenon has been dubbed colony collapse disorder (CCD). In the first winter when it struck, US hive populations crashed by 23% and in the next winter, they fell again by a further 36%.
Eager to avert the economic catastrophe that a bee-less world, scientists have been trying to find the…
grrlscientist | August 24, 2009The cricket sang,
And set the sun,
And workmen finished, one by one,
Their seam the day upon.
The low grass loaded with the dew,
The twilight stood as strangers do
With hat in hand, polite and new,
To stay as if, or go.
A vastness, as a neighbor, came,--
A wisdom without face or name,
A peace, as hemispheres at home,--
And so the night became.
~ Emily Dickinson
This is the cutest event I've heard of for NYC: a night spent counting crickets and katydids.
What: NYC Cricket Crawl (counting 7 species of crickets and katydids in NYC)Where: New York City areaWhen: Friday, 11 September 2009 at 7:…
edyong | August 23, 2009This article is reposted from the old Wordpress incarnation of Not Exactly Rocket Science. There's been more work on CCD since, but I'm reposting this mainly because of some interesting follow-up research that will I will post about tomorrow.
In 2006, American and European beekeepers started noticing a strange and worrying trend - their bees were disappearing. Their hives, usually abuzz with activity, were emptying. There were no traces of the workers or their corpses either in or around the ghost hives, which still contained larvae and plentiful stores of food. It seemed that entire…
grrlscientist | August 22, 2009The cricket sang,
And set the sun,
And workmen finished, one by one,
Their seam the day upon.
The low grass loaded with the dew,
The twilight stood as strangers do
With hat in hand, polite and new,
To stay as if, or go.
A vastness, as a neighbor, came,--
A wisdom without face or name,
A peace, as hemispheres at home,--
And so the night became.
~ Emily Dickinson
This is the cutest event I've heard of for NYC: a night spent counting crickets and katydids.
What: NYC Cricket Crawl (counting 7 species of crickets and katydids in NYC)Where: New York City areaWhen: Friday, 11 September 2009 at 7:…
grrlscientist | August 21, 2009The cricket sang,
And set the sun,
And workmen finished, one by one,
Their seam the day upon.
The low grass loaded with the dew,
The twilight stood as strangers do
With hat in hand, polite and new,
To stay as if, or go.
A vastness, as a neighbor, came,--
A wisdom without face or name,
A peace, as hemispheres at home,--
And so the night became.
~ Emily Dickinson
This is the cutest event I've heard of for NYC: a night spent counting crickets and katydids.
What: NYC Cricket Crawl (counting 7 species of crickets and katydids in NYC)Where: New York City areaWhen: Friday, 11 September 2009 at 7:…
edyong | August 21, 2009Viruses and bacteria often act as parasites, infecting a host, reproducing at its expense and causing disease and death. But not always - sometimes, their infections are positively beneficial and on rare occasions, they can actually defend their hosts from parasitism rather than playing the role themselves.
In the body of one species of aphid, a bacterium and a virus have formed a unlikely partnership to defend their host from a lethal wasp called Aphidius ervi. The wasp turns aphids into living larders for its larvae, laying eggs inside unfortunate animals that are eventually eaten from…