That sentence now appears in a newly published---and first-ever--Bohart Museum calendar, illustrated by talented artist Karissa Merritt, a fourth-year UC Davis entomology major.
Professor Kimsey collects strange, funny and odd answers that her students pen on their tests or essays in Entomology 100. Some of her favorite sentences, all calendared, include:
- “The infected fleas can harbor rats, ground squirrels, rabbits, and occasionally, even house cats.”
- "In addition to a food product, pollinators are also used to pollinate crops.”
- "Normally, locusts are introverted creatures; they do not socialize unless it is for reproduction.”
- "Drones are male bees that contribute only in the perm production for the queen."
- "Feigning death is also a play that stick insects will do when their other tragedies are all failed."
Merritt, a two-year Bohart associate, illustrated the entire calendar, drawing upon her creativity, humor and imagination. “Karissa is a gifted graphic artist,” Kimsey said.
The calendar, published by Tara Baumann & Associates of Vacaville, is a project of the non-profit Bohart Museum Society. The calendar sells for $12 at the Bohart Museum, located in Room 1124 of the Academic Surge Building on Crocker Lane. Those who contribute $50 or more to the Bohart Museum Society will receive a calendar with their donation. All proceeds are earmarked for research, education and outreach projects.
"One of the outcomes of teaching a general entomology course to undergraduates is that you develop a new appreciation for science fiction-fantasy," Kimsey said. "In part, this is because every year some new scientific discovery about an insect causes you to have a head slapping moment—they do what? The other part is how little students know about insects. Most are not entomology majors, and many aren't even majors in the biological sciences, so there are a lot of misconceptions.”
“One aspect of teaching this course is the writing requirement," she explained. "Students at UC Davis are required to take a number of units in general education, science and writing. My course fulfills two of those requirements, which means that I have to require—and grade—student term papers as part of their assignments. I can say definitely that student writing abilities have not improved over the years. So, to alleviate the pain of grading these works of art, I started collecting particularly silly or otherwise awesome sentences from their papers.”
Karissa Merritt not only enjoys drawing insects but teaching others how to do so. Last January, the Bohart Museum featured her as an “artist in residence” at its open house on insects and art. She offered tips on how to draw insects and took requests from youths. “It was touching to see how something like mundane doodling could bring smiles to kids' faces,” she said. “In fact, many ended up going home with original art work!"
What especially fascinates her the most about insects? “How alien their biology and morphology as compared to vertebrates,” Merritt said. “But working in the Bohart, I find many specimens that just amaze me with their beauty. Insects are just so diverse and it's amazing what nature produces!"
Merritt's favorite insect order is Hymenoptera, which includes bees, ants and wasps. “But I like all insects,” she acknowledged. She learned beekeeping when she volunteered in the lab of Extension apiculturist Elina Lastro Niño at the Harry H. Laidlaw Jr. Honey Bee Research Facility, UC Davis.
Merritt is also an alumnus of “Bug Boot Camp,' a five-week insect taxonomy and field ecology course taught by Phil Ward, UC Davis professor of entomology and held at the Sagehen Creek Field Station, in California's northern Sierra Nevada. That course enabled her to sharpen her taxonomy skills.
The Bohart Museum houses a global collection of nearly eight million insect specimens, and is the home of the seventh largest insect collection in North America and the California Insect Survey, a storehouse of insect biodiversity. The facility also includes a gift shop and a live "petting zoo" of Madagascar hissing cockroaches, walking sticks, and tarantulas.
The Bohart Museum is open to the public (free admission) from 9 a.m. to noon and 1 to 5 p.m. Mondays through Thursdays. More information on the Bohart Museum is available on the website at http://bohart.ucdavis.edu or by contacting (530) 752-0493 or emailing firstname.lastname@example.org.
Five candidates will present seminars in Briggs Hall, UC Davis campus, for the two U.S. Department of Agriculture (USDA) honey bee positions open at the USDA facility, located on Bee Biology Road, next to the Harry H. Laidlaw Jr. Honey Bee Research Facility.
Paul Pratt, the selection committee chair, is the research leader for the Invasive Species and Pollinator Health Research Unit, Western Regional Research Center of the Agricultural Research Service, USDA, in Albany, Calif.
Seminars will be presented in 122 Briggs from 10 to 11 a.m. followed by a group faculty meeting (UC Davis Department of Entomology and Nematology) in Briggs 366 from 1:30-2:15 p.m.
Tuesday, Dec. 11:
Natalie Boyle: “Promoting Pollinator Health and Safety in Agroecosystems”
Wednesday, Dec. 12
Michael Smith: "How Does a Bee Detect her Colony's Size?”
Thursday, Dec. 13:
Julia Fine: "Inside the Brood Box: Using Novel Methods in the Study of Honey Bee Reproduction”
Friday, Dec. 14:
Arathi Seshadri: “The Role of Behavioral and Nutritional Factors in Honeybee Health”
Monday, Dec. 17:
Clint Otto: "From Landscapes to Flowers: Understanding Forage in America's Last Beekeeping Refuge”
But newly published research by UC Davis agricultural entomologist Christian Nansen and insect physiologist Michael Strand of the University of Georgia reveals a new, non-destructive and quite accurate method to characterize physiological responses to parasitism: proximal remote sensing or body reflectance response data.
They published their research, “Proximal Remote Sensing to Non-Destructive Detect and Diagnose Physiological Response by Host Insect Larvae to Parasitism,” Dec. 4 in the journal Frontiers in Physiology.
Nansen, first author of the paper and an associate professor in the UC Davis Department of Entomology and Nematology, specializes in insect ecology, integrated pest management and remote sensing. Strand, a professor of entomology at the University of Georgia, is an international authority on the physiology of insect parasitism.
The Nansen-Strand project involved soybean loopers without parasitism (control group) and with parasitism, involving both wasp species.
“Based on reflectance data acquired three to five days post-parasitism, all three treatments (control larvae, and those parasitized by either M. demolitor or C. floridanum) could be classified with more than 85 percent accuracy,” they wrote.
Due to parasitism-induced inhibition of growth, “it's easy to differentiate soybean loopers parasitized by M. demolitor from non-parasitized larvae as long as the developmental stage of the host larva is known,” they said. In addition, a single M. demolitor offspring emerges from the host larva 7-9 days post-parasitism to pupate, while non-parasitized larvae continue to increase in size to the final instar.
Copidosoma floridanum minimally alters host growth until late in the final instar, when thousands of wasp progeny complete their development. This wasp is known for having the largest recorded brood—3,055 individuals--of any parasitoidal insect.
Parasitoids are often categorized as either idiobionts--whose hosts cease development after parasitism--or koinobionts--whose hosts continue to develop as the parasitoids offspring grow. “Parasitoids also are commonly divided into ectoparasitic species whose offspring grow by feeding externally on hosts or endoparsitoids, whose offspring grow by feeding internally,” the authors wrote. “Most known idiobionts are either ectoparasitoids that paralyze and lay eggs on the surface of larval stage hosts or are endoparasitoids that lay their eggs inside sessile host stages like eggs or pupae.”
Both of the wasps they studied are idiobionts and endoparasitoids.
Nansen noted that “many species of minute wasps are parasitoids of eggs and larvae of other insects, and parasitism represents one of the most extreme life strategies among animals”
“Living inside the body of another animal,” he said, “poses a series of non-trivial challenges, including how to overcome/suppress the defense response by the host; how to obtain oxygen; how to feed on the host without killing it--because once the host is dead, then microbial organisms and general decomposition will make the host body unsuitable--and how to manage waste.”
Nansen likened the developing parasitoids to astronauts flying in a space capsule. “A developing parasitoid faces a long list of serious practical challenges, so the evolutionary selection pressure has been immense and lead to some of the most extreme cases of co-evolution.”
Martin Beye, a professor at the University of Düsseldorf, Germany and a former postdoctoral fellow in Page's lab at UC Davis, served as the lead author of the research, “Improving Genetic Transformation Rates in Honeybees,” published in Scientific Reports in the journal Nature.
The work was accomplished in Beye's lab in Germany and the Page labs.
“The significance of this paper lies in the ability to modify the chromosomes of honey bees and study the effects of individual genes,” said Page, former professor and chair of the UC Davis entomology department before capping his academic career as the Arizona State University provost.
“The honey bee genome,” Page explained, “is composed of about 15,000 genes, each of which operates within a complex network of genes, doing its small, or large, share of work in building the bee, keeping its internal functions operating, or helping it function and behave in its environment. The ability to transform, change, genes, or add or delete genes from chromosomes of bees, has been exceptionally challenging and the effort spans decades. Martin tackles problems such as this. He takes on the most challenging genetic problems and solves them.”
Beye was the first to map the major sex-determining gene for honey bees, considered one of the most important papers ever published on honey bee genetics. He “then moved on and developed a way to implement gene editing, being able to alter single genes within the genome,” Page related. “Now he has developed a method to introduce new genetic material into the honey bee.”
In their abstract, the six-member team wrote that “Functional genetic studies in honeybees have been limited by transformation tools that lead to a high rate of transposon integration into the germline of the queens. A high transformation rate is required to reduce screening efforts because each treated queen needs to be maintained in a separate honeybee colony. Here, we report on further improvement of the transformation rate in honeybees by using a combination of different procedures.”
Specifically, the geneticists employed a hyperactive transposase protein (hyPBaseapis), tripling the amount of injected transposase mRNAs. They injected embryos into the first third (anterior part) of the embryo. These three improvements together doubled the transformation rate from 19 percent to 44 percent.
“We propose that the hyperactive transposase (hyPBaseapis) and the other steps used may also help to improve the transformation rates in other species in which screening and crossing procedures are laborious,” they wrote in their abstract.
For their research, the scientists chose feral Carniolan or carnica colonies. Carniolans, a darker bee, are a subspecies of the Western honey bee, Apis mellifera.
Beye joined the Page lab in 1999 as the recipient of a Feodor Lynen Research Fellowship, an award given to the brightest young German Ph.Ds to provide an opportunity for them to work in the laboratories of U.S. recipients of the Alexander von Humboldt Research Prize. Page, who won the Humboldt Prize in 1995, continues to focus his research on honey bee behavior and population genetics, particularly the evolution of complex social behavior.
Following his postdoctoral fellowship, Beye returned to the Page labs at UC Davis and ASU as a visiting scientist. (link to https://www.ucdavis.edu/news/honeybee-gene-find-ends-150-year-search ) Beye spoke at UC Davis this spring as part of his Humboldt-funded mini sabbatical, the guest of Page and hosted by the Department of Entomology and Nematology. During his visit, he and UC Davis bee scientist Brian Johnson developed collaborative projects that they will begin in the spring of 2019. “This is exactly what the Alexander von Humboldt foundation wants – to build and extend interactive networks of researchers,” Page commented.
"Urban Entomology" will set the theme for the next open house at the Bohart Museum of Entomology, located in Room 1124 of the Academic Surge Building on Crocker Lane, UC Davis campus, The event is set for 1 to 4 p.m., Sunday, Nov. 18. It's free and family friendly.
"The focus is urban entomology," said director Lynn Kimsey, UC Davis professor of entomology. "We'll have out examples of all the wonderful household pests/friends and garden pests, along with the kinds of things they inspect restaurants for."
Scores of displays, and a family arts and crafts activity are planned. The UC Statewide IPM Program (UC IPM) will participate in the open house.
The Bohart Museum, home of nearly eight million insect specimens, is the seventh largest insect collection in North America and houses the California Insect Survey, a storehouse of insect biodiversity.
In addition, the Bohart features a live "petting zoo," comprised of Madagascar hissing cockroaches, walking sticks, tarantulas and praying mantids; and a year-around gift shop, which is stocked with T-shirts, sweatshirts, books, jewelry, posters, insect-collecting equipment and insect-themed candy.
Public weekend hours for the academic year 2018-2019 are:
- Sunday, Nov. 18, from 1 to 4 p.m.: "Bring It Home: Urban Entomology"
- Saturday, Jan. 12, from 1 to 4 p.m.: "Time's Fun When You're Studying Flies"
- Saturday, Feb. 16, times vary: (campuswide) Biodiversity Museum Day
- Saturday, March 9, 1 to 4 p.m., "Eight-Legged Wonders"
- Saturday, April 14, 10 a.m. to 3 p.m., (campuswide) UC Davis Picnic Day
The Bohart Museum's regular hours are from 9 a.m. to noon and 1 to 5 p.m. Mondays through Thursdays. It is closed to the public on Fridays, Saturdays and Sundays and on major holidays. Admission is free. More information on the Bohart Museum is available on the website at http://bohart.