Backyard Orchard News
What can we learn from insects?
But first, let's talk about the UC Seminar Network.
It's a pilot program that involves Webcasting scientific seminars on University of California campuses. Scientists and other interested folks from all over California--indeed the nation and the world--can tune in live.
The seminars are as close as your computer. You log in, listen, and at the end of the seminar, you can ask questions.
And the seminars are free.
It all started in Feburary when entomologist James R. Carey, professor of Entomology at UC Davis and then chair of the UC Systemwide Academic Senate University Committee on Research Policy, launched Webinars in the Department of Entomology as part of the pilot UC Seminar Network.
Other departments at UC Davis soon joined in, and now UC Berkeley and UC Santa Cruz are on board. Long-range plans call for participation on all 10 campuses.
Fittingly, the next Webinar presentation at UC Davis features James R. Carey.
Carey, the director of a federally funded program on lifespan and aging that has just received a $3.4 million grant renewal from the National Institute on Aging, will speak from 12:10 to 1 p.m. on Wednesday, Oct. 21 in 122 Briggs Hall.
He will offer his insights into lifespan, aging and death from his insect studies, including research on Mediterranean fruit flies in Hawaii, Mexico and Greece and on butterflies in Uganda. Titled “Titled “Demography of the Finitude: Insights into Lifespan, Aging and Death from Insect Studies,” the Webinar can be accessed by clicking this link or accessing the link from the UC Davis Department of Entomology home page.
“One of the paradoxes of aging science is that whereas much is known about the nature of aging, little is known about the nature of lifespan,” said Carey, who has researched aging and lifespan for nearly 30 years. “For example, why do mice live only a few years while humans are capable of living 80 or more years?”
The grant is a two-year extension of his ongoing program, Biodemographic Determinants of Lifespan, a National Institutes of Health/National Institute of Aging-funded program involving scientists from UC Davis, UC Santa Barbara, UC Berkeley, Stanford and seven other academic institutions in the United States, the United Kingdom, and Greece.
The scientists study aging in nematodes, honey bees, fruit flies, red deer, soay sheep and humans, and develop mathematical models targeting the evolutionary ecology of aging and lifespan.
The Biodemographic Determinants of Lifespan has been funded since 2003.
“Dr. Carey has expanded the boundaries of entomology with his research,” said Michael Parrella, professor and chair of the UC Davis Department of Entomology. “Just as we have learned a great deal about human genetics by studying Drosophila fruit flies, Jim is expanding our overall understanding of mortality and lifespans by using various insects as model systems. He is known worldwide as one of the pioneers of biodemography, an emerging field in the interzone between biology and demography. His research is innovative and unique, and is one of many research programs that makes the Department of Entomology so strong.”
The broad aim of the research, Carey said, “is to develop an evolutionary demography of lifespan. All of the findings will be directly or indirectly relevant to an understanding of human aging and lifespan.”
And what do insect studies tell us about human aging and lifespan? Read more about his work here.And then tune in on Wednesday, Oct. 21. It's open to all interested persons.
If you miss it, it will be archived permanently on the Department of Entomology seminar page. This Web page also includes the list of past and upcoming Webinars.
The fall Webinars at the UC Davis Department of Entomology continue through Dec. 7.
James R. Carey
It was an unexpected visit.
She found it several days after the massive Oct. 12 storm raced through Northern California.
The heavy rain soaked the earth, apparently forcing the critter from its habitat.
How it wound up in the restroom is anybody's guess.
What is it?
Not a true cricket, though. It's an insect (genus Stenopelmatus) that feeds primarily on decaying organic material (and occasionally insects). It burrows into the soil using its highly specialized feet.
And yes, it does inflect a sometimes painful bite, as Cobey can attest.
It's not lethal though.
Cobey returned it to the Laidlaw grounds, releasing it near a stump.
She has no plans to trade her honey bees in for Jerusalem crickets.
Life and death in the bee observation hive...
If you ever have the opportunity to check out a bee observation hive--a glassed-in hive showing the colony at work--you can easily spot the three castes: the queen bee, worker bees and drones.
If you look closely, you'll observe the foragers performing their waggle and round dances and the royal attendants circling the queen in a retinue.
The queen will lay from 1000 to 2000 eggs a day in peak season. From an egg, to a larva to a pupa to a newly emerged bee, it's all there.
You'll observe the worker bees performing their specific duties: nurse maids, nannies, royal attendants, builders, architects, foragers, dancers, honey tenders, pollen packers, propolis or "glue" specialists, air conditioning and heating technicians, guards, and undertakers. The worker bees (sterile females) run the hive. They're the "you-go" girls and the "go-to" girls.
The Harry H. Laidlaw Jr. Honey Bee Research Facility at UC Davis has several observation hives. One is in the Laidlaw conference room; another is in an entomology classroom in 122 Briggs Hall. The bees enter and exit through a thin tube connecting the inside of the colony to the outside world.
Avid bee enthusiasts place an observation hive in their homes, often in the living room. It's a honey of a conversation piece, beside being an educational experience.
The saddest part? Watching the undertaker bees carry out the motionless bodies of their sisters and brothers.
Or watching the sisters, as winter approaches, evict their brothers. The girls are protecting their precious food storage and want fewer mouths to feed.
Drones, whose only responsibility is to mate with the queen, aren't needed in the winter months.
But wait 'til spring...
It's a blue day for the honey bees.
The massive Northern California storm--one of our worst-ever storms and marked by heavy rains and equally strong winds--means that bees are clustering inside their hives.
No foraging today.
Just last Sunday we saw honey bees nectaring blue marguerite daisy (Felicia amelloides), a colorful member of the sunflower family (Asteraceae). A native of South Africa, the marguerite daisy blooms through October.
This bee was quite old (notice the lack of hair on her thorax).
Today she's inside.
Out of the rain.
Blue Marguerite Daisy
Here's a "cold case" to investigate.
Check your backyard or neighborhood park and see if a praying mantis has deposited an egg case on a tree limb, plant or fence.
Case in point: Over at the Harry H. Laidlaw Jr. Honey Bee Research Facility, west of the UC Davis campus, a frequently watered potted plant attracts scores of honey bees seeking water to deliver to their hives.
It also has attracted a cunning praying mantis.
She just deposited an egg case on one of the stems, knowing that when her offspring emerge next spring there will be plenty of food for them.Praying mantises (Tenodera sinensis) are fierce-looking, combative insects with voracious appetites. They'll eat any insect they can catch and overcome. And not just insects: they've been known to attack and kill everything from hummingbirds to mice.
Call it a banty-rooster complex; nothing seems to frighten the pugnacious praying mantis.
About this time of year, the praying mantis deposits her eggs on a twig or stem or fence. The frothy secretion hardens into a shell to protect it from the elements and from predators.
Fast-forward to spring or nearly spring. When the weather warms, so will the cold case, and about 100 to 200 tiny mantises will emerge.
They'll be so hungry they'll even eat one another.
Can't find an egg case? Not to worry. Early next year, your local hardware store or nursery will probably have them--in the refrigerated section.