More Than a Dodo

UNEARTHING THE PECULIAR EATING HABITS OF A TRIASSIC MAYFLY SPECIES

During the summer months, the beaches of Mallorca offer an irresistible draw for tourists and palaeontologists alike. Visitors to the small Spanish island find themselves lured by its glittering seas, captivating coastline, and tasty white sands…

…well, tasty for some, at least!

Coastal cliffs near Estellencs (Mallorca, Spain). Palaeontologists working here discovered fossils of Triassic mayfly nymphs with unusual gut contents. (photo: Balearic Museum of Natural Sciences)

Following recent fossil excavations near the the coastal town of Estellencs in southwest Mallorca, palaeontologists have discovered evidence of a species of mayfly with a pretty peculiar diet. The mayflies in question lived 240 million years ago in bodies of water associated with ancient floodplains. Some of the juvenile mayflies (nymphs) were so well-fossilised that it has been possible to study the contents of their guts. A research team, led by Dr Enrique Peñalver, and featuring OUMNH’s own Dr Ricardo Pérez-de la Fuente, discovered that the mayflies’ digestive tracts contained a mixture of detritus (the decomposed remains of other organisms) and particles of a type of rock known as claystone. The most likely explanation for this strange food-pairing? It seems that the nymphs actually survived by eating muddy sediments that had settled to the bottom of the swampy-waters they lived in – yum!

If you’ve ever tried eating a sandwich on the beach, you’ll be familiar with the feeling of sand in your teeth. The sharp crunch of mineral sediment is worth the sacrifice for the delicious, digestible portion of your sandwich – the bread and fillings. Animal digestive systems are unable to extract energy from inorganic mineral matter, like sand. Instead, we rely on organic material for nutrition, i.e. matter derived from plants and other animals. It seems that the Triassic mayfly nymphs found in Mallorca would have munched through large quantities of sediment; digesting the organic detritus it contained, and excreting the inorganic remainder.

One of the numerous Early Triassic mayfly nymphs from Mallorca preserved with gut contents. These inclusions result from the original sediment the nymphs fed on (cololite, labelled here with arrows). Image adapted from Peñalver et al. (2023).

Sediment-based diets are extremely rare among living insect species. A handful of modern mayfly species have been observed to munch on the muddy sediment that surrounds the openings of their tunnels, but this is a very rare occurrence. Sediment is a pretty challenging food source, and it’s hard to say why insects may have relied more heavily on it in the ancient past. It is possible that the mayflies found in Mallorca adopted their diet as a result of the Permian mass extinction, which killed off more than 80% of all the species on Earth, ‘just’ five million years prior. With fewer choices of organic material available to eat, perhaps the mayflies were left without a better choice? Or maybe they were simply exploiting new environmental niches that opened up in the aftermath of this catastrophic event?

One of the reasons why it is so difficult to theorise about the evolution of species following the Permian mass extinction is the dearth of fossil evidence dating from the period. Luckily, the coastal cliffs of Mallorca can offer us a rare, exciting glimpse into some of the ecosystems that existed ~247 million years ago. The research team behind the Mallorcan mayfly discovery have also used fossils from the same site to describe the world’s oldest-known dipteran (a group of insects including flies, mosquitoes, gnats, and midges), naming the species Protoanisolarva juarezi. These flies would have lived on land, in back swamp areas, rather than in the water. However, much like the Triassic mayfly nymphs, they would have fed on detritus, and played a key role as recyclers of organic matter in these ancient ecosystems.

The larva of the oldest-known gnat, 247 million years old, was found near Estellencs in Mallorca. (Image: CN-IGME CSIC).

It is by paying attention to tiny insect fossils like these that we might hope to find answers to one of the biggest questions in palaeontology: how did life rebuild in the aftermath of our planet’s worst mass extinction? And what might this teach us about ecosystem responses to future mass extinction events?

By Ella McKelvey, Web Content and Communications Officer

22 June 202221 June 2022

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One door closes, another opens…

By Anna Jones, HOPE Project Manager

At the start of National Insect Week, Anna Jones reflects on an entomological escapade that has involved the relocation of over one million insects, and that will allow us to transform the Westwood Room into a ‘Museum within a Museum’ for the first time this autumn…

When we set out on our HOPE adventure in the winter of 2019, what was being called an ‘ambitious’ task seemed almost impossible. Could Museum staff, volunteers, and interns restore, rehouse, and relabel over one million British insects in just over one year?

HOPE for the Future is the Museum’s three-year project to protect and share our amazing British Insect Collection. HOPE is a natty acronym that spells out the project’s aims (Heritage, Outreach and Preservation of Entomology), and is also a nod to Frederick William Hope, a founding collector of the Oxford University Museum of Natural History. Supported by the National Lottery Heritage Fund and thanks to National Lottery Players, the project focuses on the intertwined heritage of our British Insect Collection and the Westwood room.

The Museum’s British Insect Collection represents all insect groups from butterflies to beetles and bees, flies, and fleas. It is ‘Designated’ by Arts Council England as being of national and international importance.

The Collection spans almost the entire history of British entomology, providing extensive information on biodiversity during and after the Industrial Revolution. It offers an extraordinary window into the natural world, and includes dozens of iconic species now considered extinct in the UK, like the large copper butterfly and blue stag beetle. In order to protect these valuable specimens, we had to transfer them by hand from their old cork-lined drawers, preventing reactions between the cork and the insects’ pins from degrading the specimens and making them friable. These drawers were then transferred out of their original home, in the Westwood room, to new cabinets elsewhere in the Museum.

Our British Insects in their new drawers

Finally, the meticulous moving of specimens is miraculously complete; an achievement described by our Director as “beyond the Museum’s wildest dreams”. Now the last of the cabinet doors is snugly closed, we rest assured that our collections are secure and will be preserved for the public for years to come. At the same time, we prepare ourselves to take the trailblazing step of opening the doors to the Westwood room to the public for the first time.

Originally called “Mr Hope’s Musuem”, the Westwood room became a favourite meeting place for naturalists in the nineteenth century. Now empty, the Westwood room can be restored to its former Pre-Raphaelite glory. We will also transform the room to create a new multi-purpose public space with displays on biodiversity, habitat loss, and how we can use museum collections to study our environment.

HOPE for the Future will allow the public to access the Westwood room for the first time: a beautiful, historic, and artistically-important part of the Pre-Raphaelite history of the Museum. From Autumn 2022, we will use the space to host insect-focused public engagement programmes and other popular Museum events — all connected to our learning and community programmes. Here. we hope to inspire the next generation of scientists and encourage people to care more for the wildlife on their doorsteps.

Want to learn more about insects?

Events: HOPE has many outreach activities coming up over the next few months, including Summer Schools, Discovery Days, and Entomologist Clubs with children and young people. We also run an outreach programme with families, grandparents, and community elders, encouraging thousands of people to appreciate insects, and their relationships to humans and other wildlife.
Crunchy on the Outside: read our blog for young entomologists
Donate to the HOPE appeal: help us to continue to inspire the public to learn about insects

3 June 20228 June 2022

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The Prince and the Plinths

By Hayleigh Jutson, HOPE Community Engagement Officer & GLAM Community Engagement Assistant and Danielle Czerkaszyn, Librarian and Archivist

With the Queen’s Platinum Jubilee in the air, Hayleigh and Danielle reveal the royal connections that are integrated into the very fabric of the Museum, and reveal the surprising story behind our empty plinths.

Visitors walking around the Main Court of Oxford University Museum of Natural History will find themselves circled by the stony gazes of 19 life-sized stone statues. These sculptures of eminent scientists, philosophers, and engineers include likenesses of Aristotle, Charles Darwin, Galileo, Linnaeus, and Isaac Newton. Alongside these men of science stands a statue of Prince Albert, husband and consort of Queen Victoria. Although now slightly hidden behind the T-rex, Prince Albert’s statue was given pride of place in the main court, a lasting reminder of the Royal family’s contribution to the establishment of the Museum.

Constructed between 1855-1860, the main structure of the Museum of Natural History was built using funds from Oxford University. However, the University only provided enough money to construct the shell of the building. All additional decorations – the stone carvings, pillars, and statues both outside and in – were to be funded by public donations and private subscriptions. To decorate the new building, Oxford’s scientists, along with the architects Deane and Woodward, invited Pre-Raphaelite artists to come up with designs that would represent nature in the fabric of the building.

A key element of the Museum’s decoration involved the commissioning of a series of portrait statues of ‘the great Founders and Improvers of Natural Knowledge.’ These effigies were meant to represent a range of scientific fields of study, and act as inspiration to researchers, students, and other visitors to the Museum. The University came up with a list of six ancient Greek mathematicians and natural philosophers and eleven modern scientists to be included in the Gallery. Funded by private subscription, donors could provide a statue of one of these ‘Founders and Improvers’ for £70 (equivalent to ~£8000 in today’s money).

Prince Albert, a great supporter of the arts and sciences, convinced Queen Victoria to fund the first five statues of modern scientists, costing £350 in total. The first statue that Queen Victoria commissioned and paid for was of the philosopher Sir Francis Bacon — remembered as one of the fathers of the ‘scientific method’. His statue was carved by Pre-Raphaelite sculptor Thomas Woolner. The remaining four statues that Queen Victoria paid for – of Galileo, Isaac Newton, Gottfried Liebnitz, and Hans Christian Ørsted – were to be sculpted by Alexander Munro. However, Munro was only able to complete three of these. After the University of Oxford repeatedly failed to fulfil Munro’s request for a likeness of Ørsted, the statue of the Danish physicist went unfinished. Not wanting to waste the money that had been gifted by Queen Victoria, the Museum decided to arrange for a plaster cast to be made of a pre-existing statue of Ørsted, which was sent over from Denmark in 1855.

It was hoped that Queen Victoria’s generous donation would encourage other wealthy individuals to fund the remaining statues. Initially, the plan worked. However, as time went on, donors began to favour British men of science rather than the University’s original list of international candidates. As a result, funding for many of the statues on the University’s list never materialised, and those plinths remain vacant to this day.

Even if the commissioning of the Museum’s sculptures didn’t go entirely to plan, there is no doubt that Prince Albert made an important contribution to the construction of the Museum. Fittingly, he is also commemorated amongst the Museum’s sculptures. Carved by Thomas Woolner, Albert’s statue sits behind the tail of the T-rex skeleton in the Main Court. It was presented to the Museum by the citizens of Oxford in April 1864, and remains a tribute to a champion of the arts and sciences, and one of the Museum’s earliest and most influential supporters.

Statue of Prince Albert in the Main Court of the Museum

9 May 20229 May 2022

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Community science: what’s the value?

ONE SCIENTIST OFFERS HER PERSPECTIVE

By Sotiria Boutsi, Intern

I am PhD student at Harper Adams University with MSc in Conservation Biology, currently doing a professional internship at the Museum of Natural History in the Public Engagement office. My PhD uses genomic data to study speciation in figs and fig wasps.

For most of our history, humans have been observational creatures. Studying the natural world has been an essential tool for survival, a form of entertainment, and has provided the backbone for various legends and myths. Yet modern humans are rapidly losing practice when it comes to environmental observation. As more and more of us relocate to busy urban environments, we find ourselves with little to no time to spend outdoors. Knowledge of the natural world is rapidly becoming the purview of professionals — but it doesn’t have to be this way…

Community science is a term that describes scientific research activities conducted by amateurs, often involving observation or simple computational tasks. Many citizen science projects target schools or families, but everyone is a welcome participant. The purpose of such projects, which run all around the world, is to encourage non-professionals to get involved in science in a fun, voluntary manner, while also collecting data that are valuable for scientific research.

One of the most common forms of community science is biodiversity monitoring. Biodiversity monitoring projects invite people with various levels of expertise to record observations of different species in their local area, and upload evidence like photographs and sound recordings to a user-friendly database. In doing so, they also provide important monitoring data to scientists, like information about the date and location of wildlife sightings.

The Asian Ladybeetle (*Harmonia axyridis*) was first spotted in the UK in 2004 and since then it has become very common. It is considered one of the most widespread invasive species in the world, with introductions throughout Europe, North and South America, as well as South Africa. Reported observations through the UK Ladybird Survey (Enter ladybird records | iRecord) can help us monitor the spread of this insect and see how other, native species respond to its presence.

There are a variety of mobile apps and online platforms for reporting observations, with some specialising in particular groups of organisms like plants or birds. From the raw data that is uploaded to these platforms, species can be identified through a range of different methods:

Automatic identification from uploaded evidence – often using techniques like image/sound analysis or machine learning
Community feedback – multiple users can view uploaded evidence and make suggestions about which species have been recorded
Direct use of users’ own suggestions – for users who are more experienced with species identification

But are these data actually used by scientists? Although individual contributions to community science projects may seem to be of minor importance, when considered collectively they act as extremely valuable records. Having distribution data for species can help us understand their habitat preferences, and also enable us to monitor invasive organisms. Moreover, long-term data can inform us about species’ responses to changes in their environments, whether that is habitat alteration or climate change. Science is driven by the accumulation of data, and citizen science projects can provide just that.

Biodiversity monitoring through citizen science projects encourage us to notice the tiny beings around us, like this beautifully coloured shiny Green Dock Beetle (*Gastrophysa viridula*). Moreover, recording common species like the European Honeybee (*Apis mellifera*) over different years can reveal temporal patterns, like early arrival of spring.

In addition to the benefits to the scientific field, community science projects can also be of huge value to their participants. Firstly, engaging in such activities can help us re-establish our relationship with the wildlife in our immediate environment — we might finally learn to identify common species in our local area, or discover new species that we never realised were so close by. It is surprising how many species we can even find in our own gardens! Moreover, community science events, like biodiversity-monitoring “BioBlitzes”, encourage people from different backgrounds to work together, strengthening local communities and encouraging environmental protection.

Oxford University is currently running the community science project “Oxford Plan Bee“, focusing on solitary bees. The project is creating a network of bee hotels: small boxes with branches and wooden cavities where harmless, solitary bees can rest. The hotels are spread throughout the city, and locals are invited to observe the bee hotels, take photos, and send in their findings.

Overall, community science is as much about being an active participant in the community as it is about doing science. These projects are a celebration of both collective contributions and individual growth. More than anything, they are a chance to pause and notice the little things that keep our planet running.

Want to get involved? Here is a selection of my favourite citizen science projects…

Recording species observations – global:

Recording species observations – UK-based:

Bioblitz events:

BioBlitz Archive – Bristol Natural History Consortium (bnhc.org.uk)
Follow @BioBlitzUK on Twitter

Read more:

How a Citizen Science project helped solve a mystery of UK butterflies: Painted Lady migration secrets unveiled – News and events, University of York

Citizen Science Hub – British Ecological Society

Citizen Science Platforms | SpringerLink

Citizen Science in the Natural Sciences | SpringerLink

28 April 202221 June 2022

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Disappearing Butterflies

HOW TO SOLVE A BIOLOGICAL MYSTERY USING MUSEUM COLLECTIONS AND DNA TECHNOLOGY

By Rebecca Whitla, PhD student at Oxford Brookes University

The Black-veined white butterfly (Aporia crataegi) was a large, charismatic butterfly with distinctive black venation on its wings. Once commonly found in the UK, the species unfortunately went extinct here in around 1925, with the last British specimens collected from Herne Bay in Kent. It isn’t fully understood why the species disappeared from the UK, but climate change, predation, parasites, and disease have all been suggested to have caused its disappearance — perhaps with several of these factors contributing to its decline. Central to solving the mystery of the disappearance of the Black-veined white will be the collections of butterflies that are stored in museums like OUMNH.

Butterflies tend to be well-represented in museum collections, and the Black-veined white is no exception. While the species has now been extinct in the UK for around 100 years, Lepidoptera enthusiasts from previous centuries often captured wild Black-veined white specimens for their personal collections. The abundance of Black-veined white butterflies in museum collections, like the collections at OUMNH, serve as a valuable repository for scientific research — including my own!

Black-veined white butterflies in the collections at OUMNH

Between June and December 2021, I undertook a research project using OUMNH’s Black-veined white butterflies. My task was to extract enough DNA from the butterflies to use for ‘whole genome sequencing’ — in other words, I was attempting to extract DNA from butterfly specimens to decode their complete DNA sequence. Getting DNA sequences from the historical specimens that are kept in Museums is no easy task, as DNA degrades over time. Nonetheless, animal specimens from natural history museums have successfully been used for whole genome sequencing and genetic analysis in the past, including species as diverse as longhorn beetles and least Weasels.

In order to work out how to extract DNA from the specimens, I had to try a variety of methods. This included experimenting to find out whether butterfly legs or abdomen fragments yielded more DNA, and whether non-destructive methods of DNA extraction were as effective as destructive methods. An example of a non-destructive method of DNA extraction would be a process like soaking a sample overnight and using the leftover liquid for DNA extraction, whereas a destructive method might involve mashing a whole leg or abdomen segment to use as a DNA source.

Overall, I found that destructively sampling the legs of the butterflies gave the most reliable results, and also had the added benefit of not destroying the wings or abdomen of the specimens. Keeping the wings and abdomens of the butterflies intact will likely prove useful for conducting morphological studies in future.

Now that I have a reliable DNA extraction method, the next step in my research will be to analyse more Black-veined white specimens from a span of different time periods leading up to the species’ disappearance. I will then compare samples collected from each time period to calculate the genetic diversity of the species at each point in time, leading up to its disappearance. If I find a steady decline in the species’ genetic diversity over time, this may indicate a gradual extinction of the species. This is because we expect that, as numbers of a species decrease, inbreeding will become common, resulting in less diversity in the species’ DNA. However, if the populations of Black-veined white butterflies went extinct very suddenly, the decline in genetic diversity will probably be less pronounced. Learning more about the fate of the Black-veined White could not only help us unlock the historical mystery of the species’ decline in Britain, but will also help us understand more about the species’ decline in other parts of the world.

British Insect Collections: HOPE for the Future is an ambitious project to protect and share the Museum of Natural History’s unique and irreplaceable British insect collection. Containing over one million specimens – including dozens of iconic species now considered extinct in the UK – it offers us an extraordinary window into the natural world and the ways it has changed over the last 200 years. The HOPE for the Future project is funded by the National Lottery Heritage Fund, thanks to National Lottery players.

22 April 202226 April 2022

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Re-Collections: Jane Willis Kirkaldy

By Evie Granat, Project Officer Trainee with the Freshwater Habitats Trust and Museum volunteer

The Museum is lucky enough to house several specimens presented by Jane Willis Kirkaldy (1867/9 – 1932). They serve as a reminder of a passionate and dedicated tutor, and of a key figure behind the development of women’s education at Oxford University.

Jane Willis Kirkaldy was born somewhere between 1867 and 1869, and spent her youth in London with her parents and five siblings. After completing her secondary education at Wimbledon High School, Kirkaldy gained entry to Somerville College (Oxford) on an exhibition scholarship in 1887. She finished her degree in 1891, becoming one of the first women to achieve a First Class Hons in Natural Sciences (Zoology). However, since the University didn’t award women degrees in the nineteenth century, it wasn’t until 1920 that Kirkaldy received her MA.

Upon completing her undergraduate studies, Kirkaldy worked for a short period as a private tutor in Castle Howard before returning to Oxford in 1894. Whilst researching at the University, she produced two papers for the Quarterly Journal of Microscopical Science, including an article entitled “On the Head Kidney of Myxine”. This study of the renal systems of hagfish was written with the aid of experimental work carried out by renowned zoologist Walter Weldon at his UCL laboratory. She also studied lancelets under the Oxford Linacre Professor of Zoology, publishing “A Revision of the Genera and Species of Branchiostomdae” in 1895.

Middle Devonian fossils from Eifel, presented to the Museum by Jane Willis Kirkaldy.

Kirkaldy’s achievements are especially noteworthy given how few women studied Natural Sciences at Oxford during the nineteenth century. In addition to her contributions to the scientific field, she also helped advance women’s education at Oxford University. In 1894, The Association of the Education of Women named Kirkaldy a tutor to female students in the School of Natural Sciences. The following year she ceased all research to concentrate fully on teaching, co-authoring ‘Text Book of Zoology’ with Miss E.C. Pollard in 1896, and Introduction to the Study of Biology with I. M. Drummond in 1907. She eventually became a tutor or lecturer at all of Oxford’s Women’s Societies, and a Director of Studies at all five of the women’s colleges. Amongst the many female scientists that came under her care was the Nobel Prize-winning chemist Dorothy Crowfoot Hodgkin.

Left: Page from one of our donations books listing Jane Willis Kirkaldy as the donor of a series of Middle Devonian fossils (from the Eifel) to the Museum in October 1901. Right: Chromite from East Africa, also donated to the Museum by Kirkaldy.

Beyond the Department of Natural Sciences, Kirkaldy was an important figure at Oxford — she served as a member of the Council of St. Hugh’s College for 14 years, and was made an honorary fellow of Somerville College in 1929. At the Museum of Natural History, she presented beetles from New Guinea (1890), Devonian Fossils from the Eiffel (1901), and Chromite from near Beira, Mozambique (1924).

Kirkaldy retired from the University in 1930 due to ill health, before passing away in a London care home in 1932. Oxford University subsequently dedicated the junior and senior ‘Jane Willis Kirkakdy Prizes’ in her memory, which still exist to this day.

References

https://www.firstwomenatoxford.ox.ac.uk/article/principals-and-tutors

https://archive.org/details/internationalwom00hain/page/160/mode/2up

https://www.ias.ac.in/article/fulltext/reso/022/06/0517-0524

http://wimbledonhighschool.daisy.websds.net/Filename.ashx?tableName=ta_publications&columnName=filename&recordId=72

http://wimbledonhighschool.daisy.websds.net/Filename.ashx?tableName=ta_publications&columnName=filename&recordId=71

https://archive.org/details/internationalwom00hain/page/160/mode/2up

Dorothy Crowfoot Hodgkin: Patterns, Proteins and Peace: A Life in Science, by Georgina Ferry

Quarterly Journal of Microscopical Science