Friday, March 3, 2017

Suriname river

This year for spring break, students in Andrew Short’s KU entomology course won’t be headed to the beaches of Cancun or South Padre Island. Instead, they’ll head to the jungles of Suriname, a country many people would struggle to find on a map.

Located on the northeastern coast of South America, Suriname is home to dense tropical forests. It is crisscrossed by rocky rivers, roads that grow narrow until they dead-end, gold mining, and animal and plant species that are still new to science. 

Research expeditions to document species of insects, birds, reptiles, fish and mammals in Suriname have caught the interest of writers such as Richard Conniff, who recently joined Short and a full team of scientists in Suriname for an article published this month in Smithsonian magazine.

For several years, KU students have been participating in Suriname entomology field expeditions with Short, who is curator of entomology at the KU Biodiversity Institute and associate professor of ecology and evolutionary biology. In 2015, Short received a $700,000 grant from the National Science Foundation to fund the research into understanding more about the evolution, distribution and habitats of aquatic insects, and to bring undergraduate and graduate students into the program. 

Students participating in the course and expeditions learn various methods of trapping and collecting insects, whether they are in aquatic habitats, terrestrial, flying through the air, or even inhabiting the pools of water trapped by plants at the base of their leaves. 

Not all students who go on Biodiversity Institute expeditions are studying biology. Alumni Tom and Jann Rudkin of Los Gatos, CA, have provided funds for students pursing degrees such as journalism, illustration, photography and textile arts to experience research expeditions alongside scientific staff and students who are pursing degrees in biology. 

In 2016, Gabriel O’Connor, a KU junior majoring in film studies, went on the Biodiversity Institute expedition to Suriname. He created two film projects from the experience: one focuses on the research conducted by Andrew Short and the team of students in Suriname. The other, a longer film, distilled Gabriel’s personal experience with the Suriname trip. 

This year, as Andrew prepares to head back to Suriname, he is hoping to track down a few species that are known, but little has been studied about the habitats they occupy.  

“The surrounding region of this year’s field site has been impacted by gold mining, so I’m also interested to see how that has affected the local fauna,” Short said. 

Suriname isn’t the only country on Short’s research list. He was recently selected as a 2017-2018 Fulbright Scholar to Brazil, where he will work extensively with colleagues at the National Institute of Amazonian Research (INPA) in Manaus to expand the geographic scope of his research over the next two years.

Five undergraduate entomology students will go on the expedition to Suriname: Miranda Blanchard of Lawrence; Ben Johnson of Wichita, KS; Shannon Pelkey of De Soto, KS; and Alex Kohlenberg and Tanner Myers, both of Louisburg, KS.  They will be joined by Stephen Baca, a KU graduate student studying entomology, as well as several students and faculty from the National University of Suriname.

The group departs for Paramaribo on March 15.

Top photo: collecting insects in Suriname aquatic environments.
Bottom photo: The 2016 team of KU and Suriname students. 

News Type:
Research News
Monday, May 9, 2016
Ron Seidel

By Ron Seidel

 Raintree students examine prints of various beetles during their Art Engagement class-Photo credit Caroline Chaboo.

Students at Raintree Montessori School in Lawrence are turning their research of the natural world into art, and in turn, are helping educate others.

Caroline Chaboo, curator of entomology, brought large prints of beetles into Raintree’s art engagement class, which is led by Cindy Sears. The class of 12 students, ranging from seven to 10 years old, were captivated by the beetles’ ornate structures. After viewing the prints, the students decided to work together to research the beetles and curate an exhibit in Raintree.

The student-led research branched out to include staff and resources outside of their arts engagement class. For example, Raintree Latin instructor Will Sharp helped students learn to translate the scientific Latin names of beetles. The students were encouraged to pursue their interests as far as they wish, whether it be in arts, science, music, or other endeavors.

“When a child finds something they are truly passionate about, they want to return to the feeling again and again,” said Lleanna McReynolds, head of school at Raintree, “this can only happen when students are given time to pursue subjects of interest”

The students’ partnership with the Biodiversity Institute helps them to do just that. The students plan a series of bug-related events such as outdoor collecting, and watching and drawing insects and plants. Caroline connected the students with undergraduate entomology researchers who plan to volunteer their time at the events.


Students prepare the beetle exhibit, through which they will lead informative tours-Photo credit Cindy Sears.

By giving students resources to explore their interests beyond the classroom, McReynolds believes the students experience true development.

“Watching these children in the hallways of Raintree, using a level to adjust the artwork, writing the common names from the Latin and preparing to take visitors on tours and talk about what they have learned, that is when truly learning takes place,” said McReynolds, “there is nothing better.”



News Type:
Student News
Tuesday, March 1, 2016

Beetles are everywhere.

Of the roughly 1.5 million species described so far, beetles account for around 400,000 species, making them the most species-rich group known in the world. In contrast, birds account for only around 10,000 of all described species, while only 5,600 of all known species are mammals.

Beetles are incredibly adaptable and diverse. They have learned to use a wide variety of habitats, and have become very specialized in the process, playing crucial roles in the ecosystem. They are important pollinators, recyclers, scavengers and decomposers. Much of beetle diversity, however, is yet to be uncovered.

In Peru, Caroline Chaboo, an Assistant Professor at the University of Kansas, is doing just that. Since 2008, she has been meticulously collecting beetles in the Peruvian forests, hoping to build an accurate picture of the rich beetle diversity there.

“We know now that there are around 10,000 species of beetles in Peru, and there are many, many new species awaiting discovery and description,” Chaboo told Mongabay. “My work in Peru is analogous to documenting all the bird species in the world.”

Chaboo — fondly called a “bug doctor” by her seven year-old daughter — focuses on leaf beetles, one of the most common groups of beetles. Her love for beetles has taken her to Africa, where she lived with the San indigenous peoples to see how they use toxins from leaf beetles to make poison-tipped arrows.

In Peru, Chaboo works in one of the most biodiverse regions in the world — around Manu National Park and Kosnipata Valley. This region has a tremendous diversity of birds, mammals and insects, and is home to a number of indigenous groups. This place is also threatened by mining, oil and gas explorationlogging and agricultural plantations. Chaboo hopes that her beetle surveys will showcase the value of the Peruvian forests, which can then help protect them.

Mongabay spoke with Chaboo about her love for beetles, and her work in Peru.

Pseudocalaspidea: Very little is known about this spectacular leaf beetle from ACA Villa Carmen Biological station. Photo by Caroline Chaboo.
Pseudocalaspidea: Very little is known about this spectacular leaf beetle from ACA Villa Carmen
Biological station. Photo by Caroline Chaboo.


Mongabay: What got you interested in beetles?

Caroline Chaboo: My family’s from India. But I grew up in the Caribbean, in Trinidad, and I was lucky to have good teachers. I’ve always been a systematist at heart because I collect things. I liked insects, and I built my own museum at home. When I moved to New York, I worked at the Natural History Museum there. I saw American researchers collecting insects, and they would use all kinds of strange contraptions to collect the insects, which got me fascinated.

I got a scholarship one summer from my university to spend a month at a field station. There were many visiting researchers there and I got to see what they were doing. I fell in love with insects there. The Natural History Museum at New York has the fourth largest insect collection in the world and I had all the free time in the world to go through the specimen drawers. In parallel to that I started learning about the insects and what kinds of questions I would want to ask.

I liked the really colorful insects, and for various reasons I ended up choosing leaf beetles, which are very colorful. I did a master’s degree with a well-known beetle expert, then my Ph.D. So once you pick a group and pick some questions, you kind of keep specializing in that area, and I’ve been doing that for a long time.

Mongabay: What do you find most fascinating about leaf beetles?

Caroline Chaboo: The diversity. Why are there around 40,000 species of leaf beetles? Why are there 10,000 bird species in the world, or 5,500 mammals? Why was evolution so uneven that some groups became huge and some groups are small. We rank leaf beetles at the top five in insect diversity. The world outside looks the way it does largely due to beetles. Flowers evolved because of beetles. So my attraction to them is this extraordinary diversity and what are the factors that lead to this diversity.

In Peru's Madre de Dios, the forest stretches to the horizon in every direction. But this view is threatened by increased gold-mining (legal and illegal), oil palm and cocoa cultivations, logging and habitat conversion. Photo by Caroline Chaboo.
In Peru’s Madre de Dios, the forest stretches to the horizon in every direction. But this view is threatened by increased gold-mining (legal and illegal), oil palm and cocaine cultivations, logging and habitat conversion. Photo by Caroline Chaboo.

Mongabay: What drew you to Peru?

Caroline Chaboo: Again, the diversity question. At some point as a biologist you have to commit to places. You can’t just keep flying to every place, although I would love to do that. But it takes a lot of time to cultivate the right people, the permits, to learn how to work in a place. I also had a child, she’s seven now. So that brings up a different set of considerations — how long does it take to get to a place, how effective and efficient will my work there be, how fast can I come home.

I first went to Peru on a scholarship from the Amazon Conservation Association. I stayed at their field station, and there I realized how much there is and how much is unknown. And the unknown can be extremely attractive as a research problem.

I already knew that Peru was one of the top biodiversity hotspots in the world. Peru has the highest number of birds, the highest number of plants, the highest number of ferns. Because of leaf beetles’ relationships with plants you can predict that if a place has high plant diversity, it will have high diversity of herbivores. So I kept going back, and realized that there’s a lot to do there.

Mongabay: Which region in Peru are you focusing on?

Caroline Chaboo: I am highly focused on Manu National Park and buffer zones in Kosnipata Valley within my broader lens of Peru biodiversity. On the edge of Manu National Park, Amazon Conservation Association has three main field stations. We had access to these field stations and could build a long-term research project.

The three field stations are at different elevations, and I could access very different kinds of forests at these stations. There are two regions of hotspots here: one where the lowland forests meet the high elevation forests, and a second band of hotspot where the high elevation grasslands meet the forests. So just based on the landscape I could predict that this was a zone of high diversity.

Horizontally too, a rainforest is not the same throughout. Depending on the nature of the drainage basin, the river flow, or soil type, you can get variations within a rainforest. So you can get big patches of bamboo forests, palm forests, swamps where these rivers form oxbow lakes, and all this adds to diversity, besides the internal dynamics of the forests.

Typical cloud forest at Amazon Conservation Association's Wayqecha Biological station. Photo by Caroline Chaboo.
Typical cloud forest at Amazon Conservation Association’s Wayqecha Biological station. Photo by Caroline Chaboo.

Mongabay: What are you working on currently?

Caroline Chaboo: At this point now, I’ve been collecting beetles in Peru since 2008. We have just finished a massive project, kind of the first wave of the analysis of my data. We’ve worked with more than 50 beetle experts from around the world, all over Central and South America, and Europe. There are about 200 families of beetles in the world, and we have now documented 100 families of beetles in Peru.

Now, we are on a species-describing spree for beetles of Peru. I think this is going to be a lot of fun because the foundation has been built very solidly. We know what’s in the museums. I have all these great collections, and we have assembled all the literature. We have figured out the correct names, and I have the best people in the world to put laser attention on this. So it is very exciting.

Student setting out a colored pan trap line. Insects are attracted to different colors so we sample different flying insects in soapy water. Photo by Caroline Chaboo.
Student setting out a colored pan trap line. Insects are attracted to different colors so we sample different flying insects in soapy water. Photo by Caroline Chaboo.

Mongabay: Could you talk about your field work?

Caroline Chaboo: As an Assistant Professor at the University of Kansas, I’ve been free to develop certain courses to teach, and one of the courses I developed is a Field Biology Program with a research component. So I take between 6 to 14 undergraduate students with me on a field expedition.

Once we’ve arrived at the field stations, we take on a whole lot of different kinds of collecting equipment and head out. For example, if you want to collect insects that are flying at a low level in the forest, just above the forest floor, you will use certain kinds of traps. If you want beetles living in the mid canopy, you will need another set of traps. Similarly, leaf litter has its own beetle fauna, trees that have fallen over have a different set of insects.

So I set up a trap, and then everyday teams of students go and clean out the traps of the specimens. They make sure we have enough ethanol in the traps to kill the insects when we catch them. Other students walk trails and look at certain plants to collect beetles from. We might see fungus growing, we collect those and rear the insects out of the fungus.

Beetles are amazing that way. They partition a habitat in thousands of ways. So you can use broad collecting methods but you have to combine them with specialized collecting methods. I am hoping that now that we have these 50 plus experts, each expert will have their own little toys and gizmos and ways of looking at the forest that will give us a truly accurate species list.

There is one group of insects, for instance, that only flies at dusk and dawn (think of fireflies). Now, I’m doing all these trapping methods, so I’m exhausted at dusk and dawn. To get a truly accurate species list of that group, I need someone just focused on collecting beetles only at that time of the day. Then there are some insects that only come to carrion or rotting meat. So someone will have to be focused on just that group of beetles. For my group, I need to know the species of the plants.

Using my broad collecting methods we have a baseline of what beetles are there in Peru. To this, we need to add a layer of additional specialized collecting methods, and sample many different habitats. We need to go to the top of the Andes, to the coasts and deserts.

A total accurate species inventory for Peru for insects will require manpower, complicated set of trapping methods, and sampling of the diversity of habitats in Peru.


Chaboo with University of Kansas students ready for field work, ACA's Villa Carmen Biological Station. Photo by Caroline Chaboo.
Chaboo [second from left] with University of Kansas students ready for field work, ACA’s Villa Carmen Biological Station. Photo by Caroline Chaboo.

Mongabay: How will an accurate species inventory of beetles help?

Caroline Chaboo: I want Peruvians, especially, to know about this extraordinary treasure that they have. Most of the population of Peru lives on the coastal side of Peru, on the desert, and when you have a desert ecosystem, how do you comprehend a rainforest? And when you are making political decisions about the Amazon side of Peru, do you have the same values? But if they knew about their own biodiversity, we could perhaps influence their decision about which habitats are more important than others and which ones must be absolutely protected.

In general beetles are so diverse that they inhabit every niche — they are recyclers, decomposers, scavengers, and pollinators. So their roles must be understood to value and protect forests.

Mongabay: Does your daughter accompany you to the field?

Caroline Chaboo: She’s seen me collecting in Kansas, and other places. But she’s not been to a major expedition in Peru yet. She knows how to collect though, and she can hike. And because I collect insects, she calls me a bug doctor.

Article published by Shreya Dasgupta on March 1, 2016.

News Type:
In the News
Tuesday, November 24, 2015

Back in April, University of New Mexico Ph.D. candidate (and KU alum) Grey Gustafson  was on the hunt for a particular species of whirligig beetle in Alabama’s Conecuh National Forest, but something else caught his eye. As it turns out, this beetle is the first unequivocally new species of the whirligig family (Gyrinidae) to be described in the United States since 1991. Gustafson named it Dineutus shorti after University of Kansas coleopterist Dr. Andrew E. Z. Short.

Read more about Gustafson's discovery:

News Type:
In the News
Thursday, November 5, 2015

Charles MichenerThe University of Kansas mourns the passing of Distinguished Professor & Senior Curator Emeritus Charles D. Michener, aged 97.  Mich passed peacefully at home in Lawrence early on 1 November 2015, surrounded by his family.  Mich was born 22 September 1918 in Pasadena, California and into a family of avid naturalists.  Both of Mich's parents were active birders and members of the Western Bird Banding Association, and encouraged his passion for natural history.  By the age of 10 he had already made detailed notes on the regional flora, and began to shift his remarkable talents to the insects, particularly the bees.  At the age of 14 he wrote to the prominent bee systematist of the day, Theodore Cockerell (himself a former assistant of Alfred Russell Wallace) for advice in identifying species, and later spent a summer at Cockerell's home learning much about bees.  Mich published his first scientific paper at the age of 16, and at least partly based on data he had collected as early as age 12.  

Mich went to the University of California, Berkeley for his B.S. (1939) and Ph.D. (1941), the latter of which culminated in the monograph, "Comparative External Morphology, Phylogeny, and a Classification of the Bees", a work that garnered the A. Cressy Morrison Prize in Natural Sciences in 1942 and established him as the leading authority on bees.  In this work he provided a rigorous phylogenetic framework for understanding the evolution of bees, and a comprehensive classification of the world's fauna as it was then known.  It rightly ushered in the 'Michener Era' of bee study, and has remained strong ever since.  In 1942 Mich became curator at the American Museum of Natural History, assigned to the collection of butterflies and moths, and through this appointment became a resource to a young Paul Ehrlich and Vladimir Nabokov, among others.  During this period he also served in the U.S. Army's Sanitary Corps, working on mosquitoes and chiggers, before returning to his position at the AMNH.  His work on the Lepidoptera culminated in his 1952 monograph on the Saturniidae (a group that includes the famous 'Luna Moth'), which remains to this day the classic and definitive treatment of the family.

In 1948 Mich relocated to the University of Kansas, and remained there.  The move to Kansas afforded him the opportunity to return to his primary interest in bees.  At KU he was able to expand his work into bee biology and behavior, allowing him to more fully explore aspects of pollination biology and the influences on the evolution of their intricate social systems.  This work resulted in expansive treatments of leafcutter bees, and made possible the future development of the 'Alfalfa Leafcutter Bee' as a more efficient managed pollinator of such crops.  He explored the development of insect communication and social systems, developing theories for their evolution and a revised classification of arthropod social groups.  It was this body of work that would later be expanded upon by E.O. Wilson and others during the rise of the field of 'Sociobiology', and for which Mich's 1974 classic, "The Social Behavior of the Bees" remains a primary reference.  Simultaneously, Mich was working on the new quantitative methods in classification, with his colleagues Robert Sokal and Peter Sneath.  The earliest applications of their newly founded, 'Numerical Taxonomy' (or 'phenetics') were on the classification and evolution of osmiine bees, of with Mich was deeply involved at the time.  In April 1965 Mich became the first Kansan elected to the National Academy of Sciences, and this was followed by many other honors, too numerous to enumerate.  Mich received a prestigious Guggenheim Fellowship in 1955 which allowed him and his entire family to spend a year in Brazil working on the South American bee fauna, and a second Guggenheim supported the family for 14 months exploring bees in Africa in 1966 (exploring and collecting their way from South Africa to Uganda!).  A 1957 Fulbright Research Award took the family to Australia for a year, where Mich launched a generation of new bee biologists and later produced a massive monograph of the Australian and South Pacific bee fauna. 

Mich retired in 1989, but remained as active as ever and in 2000 published his magnum opus, "The Bees of the World".  At nearly 1000 pages it covered over 16,000 species and is, quite simply, the single greatest work produced on the subject.  That is until he revised it for an even more grand second edition in 2007.  After the second edition, Mich continued to write papers on bees, work on the bee research collection, correspond and consult with researchers worldwide, host visitors to the bee collection, advise students and colleagues at KU, identify species for pollination and conservation biologists, and bless everyone with his warm generosity.  He continued to visit the KU Biodiversity Institute's entomological collections as recently as mid-October. 

Aside from his numerous academic achievements, Mich was most importantly a genuinely wonderful human being.  Soft-spoken and mild in demeanor, he was generous with his time and expertise, and was always unassuming.  While many who achieve his level of fame become distant or self-absorbed, he was instead the consummate gentleman and had an open door through which one could walk in at any time and say, "Hi Mich, can I ask you a question?"  To which he would always set aside what he was doing, turn with a warm smile, fold his hands characteristically, and listen and converse for as long as one would like, and on any subject.  He treated everyone with the same level of affectionate dignity.  His kind manner was a constant in a world of persistent change, and is missed. 

Everyone at KU mourns his loss, and offer to his family their most heartfelt condolences. 

KU Endowment maintains the “Charles D. Michener Bee Collection Fund (Acct. 32534)”, which supports the continued maintenance, growth, and development of the finest collection of the world’s bee fauna – the result of Mich’s lengthy tenure with KU and his life-long exploration into the diversity and biology of bees. 

A family obituary appeared in the 4 November, Lawrence Journal World.


News Type:
In the News
Monday, October 19, 2015

Emmanuel Toussaint, postdoctoral researcher in the lab of Andrew Short, has been awarded the 2016 R.J.H. Hintelmann Award, which is presented annually to a young scientist for outstanding achievements in zoological systematics, phylogenetics, faunistics or biogeography. He will travel to the Bavarian State Collection in Munich (Zoologischen Staatssammlung München) in January to present a talk and receive the award. 

News Type:
Award Grant News
Tuesday, September 15, 2015

beetle brood
Many scientists believe the very same dynamics that have shaped conflict between nations since the early 20th century also may govern how species evolve on Earth.

“The term ‘arms race’ originated with tense and competitive relationships that developed among European nations before World War I as they built up stockpiles of conventional weapons,” said Caroline Chaboo, assistant professor of ecology and evolutionary biology at the University of Kansas and assistant curator with KU’s Natural History Museum and Biodiversity Institute. “The term has become widely used to describe competitive relationships.”

She said biologists have adopted the term for another kind of escalation — defenses, countertactics and one-upmanship among rivals in the natural world. 

“We know these evolutionary interactions can be fast, as in medicine where medical professionals and drug companies have a tense relationship with fast-evolving and drug-resistant pathogens, and they must design new and different cocktails to keep up with this enemy,” Chaboo said. “Other examples of tense relationships that drive evolution, counterevolutionary responses and one-upmanship include parasites and their hosts, seeds and seed-eating bugs, hunters and prey.”

According to Chaboo, such arms races influence the mechanics of evolution, as traits developed for defense over time result in entirely new species.

“One member of the relationship is attacking or resisting while the other is evolving to overcome defenses or avoid attack,” she said. “The competition can be at the level of genes, sexes or individuals. Ultimately, the one-upmanship drives diversity in a certain direction. Enemies make the population better. Thus, the more fit individuals — those with better escape responses, more effective offenses, better weapons to fight — avoid elimination and live on to reproduce and contribute their genes to subsequent populations.”

While the arms-race model is popular in evolutionary studies, it needs more validation from field research, Chaboo said.

Now, she and colleagues Ken Keefover-Ring of the University of Wisconsin-Madison and Paula “Alex” Trillo of Gettysburg College have been awarded a two-year, $150,00 National Science Foundation EAGER grant to study questions from the arms-race model of defenses in leaf beetles. The fieldwork will take place at the Smithsonian Tropical Research Institute in Panama next summer.

Chaboo and her team will focus in part on the evolving defenses and tactics of tortoise beetles.

“In the larval stage, tortoise beetles exhibit a very different array of physical, behavioral and chemical traits,” she said. “Baby insects lack wings, and their first reaction to interference is to walk away. A large group of tortoise beetles has lateral projections which function in different ways — these break up the body outline, making the larva ‘disappear’ against its background, and they are armed with pointed hairs that may act as lances.”

Chaboo said many tortoise beetle species also show gregarious behaviors, living in groups. Working together, they diffuse plant toxic chemicals as each member ingests a small amount, and they also present a more intimidating herd to an “interloper.”

Also, the beetles expertly defend themselves with the ick factor.

“By far, the most peculiar defense is the recycling of their own feces and cast skins — exoskeletons of earlier larval stages — into a shield that is worn like an umbrella over the body,” she said. “This shield can ‘hide’ the larva, making it look like a damaged leaf to an aerial enemy, or form a nasty physical barrier to probing enemy mouthparts.” 

One arms-race strategy researchers will study in depth is the “escape and radiation” tactic, found in tortoise beetles, whereby new traits that better deter attack arise in a species. That species flourishes, free of enemy attack —to radiate or split into two or more species, giving rise to richer biodiversity.

“Individuals that survive day-to-day conflicts grow to adulthood, reproduce and leave more of their offspring with refined traits in successive generations,” Chaboo said. “Over evolutionary time, new traits and new trait combinations result in more diversity. We can compare lineages in our new evolutionary trees to determine how they diverged and radiated and identify which traits or suites of traits may be influencing radiations.”

Chaboo said the grant would present different challenges at each stage.

“The experimental work requires us raise up large populations of beetles in a greenhouse, and we have just one field season,” she said. “The sequence-phylogenies have bioinformatics issues. Integrating the phylogeny, behavioral and chemical datasets is a challenge, which is why we were invited to submit our proposal to the NSF EAGER program in the first place as a high-risk, high pay-off study.”

But with high risk comes high reward: A better understanding of arms-race theory derived from studying the beetles could help us better grasp our own evolution, Chaboo said.

“The work on beetles might demonstrate fundamental principles about how antagonistic and competitive relationships drive evolution and generate diversity,” she said. “This can explain partly how our world looks and even explain human evolution. What aspects of human morphology and behavior can be traced back to the impact of our ancestors trying to avoid being prey or becoming more adept hunters?”

Chaboo said the research team would develop an online educational resource in both English and Spanish about subsocial insects like beetles.  “Subsociality is far lesser known than true sociality. Our content with images and movies should fill a knowledge gap,” she said.

Along the way, the biologist and her colleagues will continue to mentor U.S. undergraduates alongside Panamanian students in international field research.

“We anticipate involving Panamanian schoolteachers as well through existing outreach programs at the Smithsonian Tropical Research Institute,” she said. 

Article by Brendan Lynch.
Photo above: Beetle mom with brood of larvae in French Guiana (Credit: Pascal Bonin) 

News Type:
Research News
Thursday, March 5, 2015

The National Science Foundation has awarded entomology curator Andrew Short a grant of $700,000 for his proposal “CAREER: Teaching Modern Biodiversity Science from Fieldwork to Phylogeny: Diversity, Systematics, & Evolution of Ecologically Promiscuous Aquatic Beetles.” The grant includes resources for undergraduate and graduate student opportunities, including fieldwork in Suriname and Guyana.

Freshwater and terrestrial habitats demand dramatically different sets of morphological, physiological, and behavioral traits. Consequently, animals at each end of this habitat continuum exhibit starkly different morphologies and life histories, and lineages must overcome numerous challenges to transition between these divergent ways of life. Nevertheless, insects have repeatedly crossed the freshwater-terrestrial boundary in many independent groups. Despite this diversity and abundance, little is known about how insects evolve across this seemingly formidable aquatic-terrestrial boundary and how this affects the evolutionary trajectories of these lineages. Using the beetle family Hydrophilidae, a lineage which has diversified in a range of fully aquatic, terrestrial, and intermediate habitats and has transitioned between them repeatedly, Short and the students will examine (1) the ecological and morphological transitions associated with aquatic-terrestrial habitat shifts, and (2) both the macroevolutionary (e.g., changes in diversification rate) and intraspecific (e.g., differences in genetic structuring) consequencesof these shifts. By combining fieldwork, revisionary taxonomy, RAD-seq phylogeography and phylogenetics with immersive undergraduate coursework and graduate student training, this team will disentangle the evolutionary history of habitat transitions in water beetles.


News Type:
Award Grant News
Thursday, June 26, 2014

LAWRENCE — The instinct for mothers to protect and nurture offspring is rooted in more species than scientists have understood before now.

In a new study published in the Journal of Natural History, University of Kansas researcher Caroline Chaboo details how some leaf beetles — a huge group of about 40,000 separate species that usually are solitary insects — show self-sacrificing maternal care for their young.

"Maternal care is a phenomenal behavior, whether it's a beetle, a shark or a monkey," Chaboo said. "The investment of mothers with their time, their vigilance, their grooming and cleaning, finding and providing food, putting their own lives at risk, often not eating for themselves — it's remarkable that parental care is so one-sided."

Dubbed by scientists as "subsociality," active parenting among leaf beetles is notable because the insects usually live out their lives alone, without the more complex social behavior seen in bees, ants, wasps and termites — which scientists call "eusociality."

But the exception to the loner's life of a beetle is motherhood, where the solitary insects become more like "helicopter moms."

"A leaf beetle mother will keep an eye on the eggs, grooming and guarding them," Chaboo said. "She will oversee her herd of larvae as they eat, while she keeps watch for flying attackers, like wasps, and also pedestrian attackers, like ants. She moves between the attacker and the babies, and will stamp her foot and try to shoo off the intruder."

The leaf beetle's active mothering is critical to the survivability of the next generation, according to Chaboo.

"If she is removed or lost, all the babies die," she said. "It’s pretty crucial that she is around to ensure some of the offspring survive and reach adulthood."

After a century of research focus on eusociality by William Morton Wheeler, Susan Batra, Edward O. Wilson and KU's own Charles Michener, James Costa brought focus to the poorly known phenomenon of beetle subsociality with his 2006 book, "The Other Insect Societies." Chaboo worked to expand knowledge of leaf beetle parenting with her own fieldwork and an extensive review of literature.

"Leaf beetles have fascinated me since I first looked at these extremely colorful beautiful beetles in a museum drawer," said the KU researcher. "During fieldwork in my native country, Trinidad, I found female leaf beetles guarding their babies. This discovery led me to start pulling on the thread. I was already writing this new paper when Costa's book appeared. To make a truly paradigmatic shift in research on leaf beetle subsociality, I needed to make the paper synthetic by pursuing every bit of what we may already know about parental care in leaf beetles, more comprehensive by pursuing more fieldwork to discover species I suspected were subsocial, and more paradigmatic by developing evolutionary models to organize the information we have and to accelerate future research."

Indeed, Chaboo's paper on leaf beetle subsociality has received praise from fellow scientists for its comprehensiveness and new insights into how insects' social lives have contributed to their evolution.

"It’s an important paper, because it extends the records of subsociality in insects and in particular in the Coleoptera," said Bert Hölldobler, the Pulitzer Prize-winning evolutionary biologist at Arizona State University, using the scientific name for beetles. "Subsociality is generally considered the evolutionary precursor of eusociality, which is so prevalent in ants, and some bee and wasp species and termites. But there are also some beetle species known that have evolved eusociality. The kind of work Caroline has just published is extremely important for all of us who want to understand the evolution of social life on this planet.” In addition to the extensive literature review, Chaboo and her colleagues spent countless hours in the field, discovering many species with subsociality.

"We're searching for species in tropical forest habitats — the needle in the haystack," Chaboo said. "Even though we had educated guesses on the host plants, it is still serendipitous when a subsocial species is discovered. My co-authors, Rob Westerduijn in northern Peru and Fernando Frieiro-Costa in Brazil, have more frequent access to the habitats and are walking the trails a lot. Each new species we report represents tenacious work — to search out the plants, turn over leaves, scan vegetation for mothers and babies, and keep returning to study the behaviors."

Chaboo’s own fieldwork took her to Panama, Costa Rica, Nicaragua, Trinidad and Peru. She says that in the midst of the research she gained even more understanding of the maternal instinct common to so many species by becoming a mother herself. "During the course of writing this paper, my co-author Jesus Gómez-Zurita in Spain and I each had a child," she said. "I think our respect for these leaf beetle mothers grew enormously with our own experience as first-time parents."

News Type:
Research News
Friday, May 23, 2014

Scientists from the University of Kansas and more than 60 other international research institutions spanning six continents have responded to a recent paper in Science, which questioned the practice of collecting and preserving scientific specimens.

KU biologists Rafe Brown and Andrew Short, along with other researchers, argued that the value of scientific collections is vast and their effect on natural populations is minimal. The response also stresses the immense value of scientific collections – such as those held by the KU Biodiversity Institute and Natural History Museum – across a wide range of disciplines.

In the original paper, "Avoiding (Re)extinction," the authors had argued that the collection of scientific specimens has played a significant role in species extinction, pointing to examples of now-extinct birds, frogs and plants to support this claim.

Today’s response paper, led by Luiz Rocha, a fish biologist from the California Academy of Sciences, emphasizes the minimal effect that research-based specimen collecting actually has on populations. Rocha, Brown and Short, and other scientists, argued that the value of scientific collections is vast and their effect on natural populations is minimal.

“This is a delicate topic because none of us like to think about the death of a beautiful bird or colorful frog,” said Brown, curator of herpetology at the Biodiversity Institute.  “But as conservation scientists, we are primarily concerned with species preservation and the long-term viability of populations.  It’s not the several individual frogs that are sacrificed humanely for the global good that make me sad…I get emotional about the many hundreds of thousands that will die this year en masse as we cut down forests and pave over the last of their habitat; we know that many of those individuals will be the last of their species."

The authors point to several examples that illustrate the role scientific collections have played in understanding such things as the effects of climate change on populations and the spread of disease. In one such analysis, scientists looked at specimens from a wide range of taxa, collected over the past several decades or more, and found a significant correlation between an increase in daily temperatures and a decrease in body size — a response that might limit the ability of some species to tolerate more dramatic swings in future temperature extremes.

Scientists have also analyzed amphibian specimens collected over the past five decades or more, including many hundreds of specimens in KU’s herpetology collections, to track the origin and spread of the frog-killing chytrid fungus in hopes of preventing its further spread.

It is only by investigating information about specimens collected across time that scientists can answer questions about species and the environment in a changing world, said Short, entomology curator at the Biodiversity Institute. Such collections are not the cause of extinctions.

“Responsible collecting of scientific specimens is the only way to identify most of the world’s species,” Short said. “These collections are critical to assessing water quality, habitat degradation and the impact of climate change. It is not a conservation threat and treating it as such distracts from the real drivers that are imperiling our biodiversity, such as habitat loss and invasive species.”

In the original paper, the authors went on to recommend alternatives to standardized collection methods used today, namely photography, audio recordings and non-lethal tissue collection. Although in many cases these methods are employed in species identification, scientists point out that they will often fall far short of the wealth of information that scientific specimens provide. Species identification, they write, is not the only — and is often not the most important — reason to collect voucher specimens.

In other cases, genetic data from decades-old scientific specimens has even been used to identify current species that were thought to be extinct.


News Type:
Research News