The thin, flexible, and mobile ovipositor of some female insects, perfected over thousands of years of evolution, can carry substances and drill into various substrates. Although its structure is well studied, many of its functions remain a mystery.
Researchers from Saratov State University and Moscow State University spotted interesting, unusual oviposition behaviour in the parasitoid wasp Eupelmus messene: it used its ovipositor to drill through the wall of a polystyrene Petri dish and lay an egg outside the dish.
Drilling with the ovipositor through a plastic wall of a Petri dish by Eupelmus messene (A), a newly laid egg into the external environment (B), and UV fluorescent biological substance inside the perforations (C). ov – ovipositor, per – perforation, egg – egg.
This is the first time such behaviour has been observed and recorded.
E.messene is a parasitoid of the gall wasp Aulacidea hieracii, which forms a gall on the stems of the hawkweed Hieracium×robustum. The female of E.messene then drills the walls of the gall with its ovipositor in search of a gall wasp larva and, upon finding it, lays an egg next to it.
The researchers reared 56 females from galls of H.×robustum collected near Saratov, Russia. Of them, they placed 18 in Petri dishes without host galls, and later observed five of those wasps drilling into the walls of the Petri dishes.
The team followed the behaviour of one wasp: drilling each perforation in the polystyrene wall took more than two hours, during which the insect often paused to eat, drink water, or wash. In the end, it managed to completely pierce the plastic wall and lay an egg on the outside of the Petri dish. It drilled multiple holes, even after being transferred to a different Petri dish.
Eupelmus messene drilling the wall of the polystyrene Petri dish. Video by Matvey I. Nikelshparg, Evelina I. Nikelshparg, Vasily V. Anikin, Alexey A. Polilov
“We distinguished four steps of drilling: pushing movements, rotational movements, ejection movements, as well as the cementing step. However, in natural gall, we never observed ejection movements. We suppose that such a type of movement is required to rake out plastic particles, which is unnecessary for more elastic plant gall substrate,” write the authors in their study, which was published in the Journal of Hymenoptera Research.
After laying the egg, the female carefully cemented the drilled perforation with an unknown biological substance, likely to keep it safe from the impacts of changing temperatures, water, and microorganisms.
Unlike galls, which usually have an opaque and dense structure, the transparent Petri dish provided a clear view of the whole drilling and oviposition process, allowing the researchers to study it closely.
It is still unknown why the wasp behaved this way, but the scientists believe we can learn a lot from this observation: “Studying in detail the drilling behavior of parasitic mycrohymenopterans can be useful in medicine for the creation of minimally invasive guided probes in neurosurgery, the development of orthopedic surgical instruments, needle biopsies using functionally graded tools,” they write in their paper.
Research article:
Nikelshparg MI, Nikelshparg EI, Anikin VV, Polilov AA (2023) Extraordinary drilling capabilities of the tiny parasitoid Eupelmus messene Walker (Hymenoptera, Eupelmidae). Journal of Hymenoptera Research 96: 715-722. https://doi.org/10.3897/jhr.96.107786
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Jake Lewis, an entomologist in the Environmental Science and Informatics Section at the Okinawa Institute of Science and Technology (OIST), is fascinated by weevils, a diverse group of beetles that includes many species with elephant trunk-like mouthparts (called a rostrum). Weevils provide various ecosystem services such as pollination and decomposition, but some species are serious pests known to decimate crop fields and timber forests.
OIST entomologist and Insect Collection Manager, Jake Lewis, searches for weevils on Okinawa Island, Japan. He and his collaborators collected weevils from Japan, Taiwan, Vietnam, and Malaysia, and discovered 12 new species. Photo credit: Merle Naidoo, OIST
Using x-ray microtomography, a 3D imaging technique that uses x-rays to visualize cross sections of the internal structure of objects, Lewis and his collaborators digitally removed scales that cover the cuticle of the weevils. They found that the underlying cuticle differs significantly between species and can therefore be used for taxonomic and classification purposes. Using this technique in combination with traditional light microscopy and DNA barcoding, they discovered, described, and named 12 new weevil species from Japan, Malaysia, Vietnam, and Taiwan. These species range from 1.5 – 3.0 mm in length and are comparatively quite small weevils.
Two of these new species are present in Japan: Aphanerostethus magnus (Oo-daruma-kuchikakushi-zoumushi) and Aphanerostethus japonicus (Nippon-daruma-kuchikakushi-zoumushi). One of these, Aphanerostethus japonicus, is also found in Yanbaru National Park, Okinawa. This is the first time x-ray microtomography has been used to remove obscuring scales to examine underlying differences in morphology for taxonomic purposes. The findings from this study have been published in the open-access journal ZooKeys.
Researchers have discovered, described, and named 12 new weevil species in Japan, Malaysia, Vietnam, and Taiwan. Aphanerostethus magnus and Aphanerostethus japonicus are found in Japan, with the latter also found in Yanbaru National Park, Okinawa. Photo credit: Lewis et al., 2024
The researchers showed that removing scales using x-ray microtomography reveals significant morphological differences between species, which cannot be easily observed using other methods. Consequently, this technique may gain more popularity as a tool for identifying new insect species, especially those covered in scales or debris.
Lewis, OIST’s Insect Collection Manager and lead author of the paper, examined specimens from collections in Canada, Germany, Japan, Malaysia, Taiwan, and the Netherlands. One of the primary goals was to investigate the use of x-ray microtomography as a tool in weevil taxonomy. The genus Aphanerostethus was poorly studied in the past, but many undescribed species were discovered in museum collections around the world, including the two new species from Japan.
X-ray microtomography generated 3D models of weevil species from the genus Aphanerostethus with the right elytron (forewing) removed, revealing differences in the length, width, and pattern of veins in the hindwing. A lateral view of the full body is shown below each closeup for reference. The red, blue, and yellow arrows indicate the base, midpoint, and apex of the hindwing, respectively. A: Aphanerostethus bifidus; B: A. decoratus; C: A. japonicus; D: A. magnus. Image credit: Lewis et al., 2024
Multiple methods to find new species
The researchers used traditional methods such as light microscopy and dissections to observe differences between species, including the scales along the elytra (back), leg spines, and the shape of the rostral canal (a canal that protects the rostrum). They also used DNA barcoding to analyze their genes and create a phylogenetic tree of eight of the species. Some species were not as easy to separate based on morphology alone, but as the gene sequences differ between species, the phylogenetic tree was informative and provided additional evidence of new species.
: Phylogenetic tree of eight Aphanerostethus species constructed by comparing genetic information to see how closely related different species are. This helped Lewis and his team verify their predictions about species classification by using DNA analysis instead of only physical traits. The colored, vertical bars represent different species and includes the two new species from Japan. Image credit: Lewis et al., 2024
Although the above methods are standard practice in taxonomy, the researchers’ use of X-ray microtomography was novel and was successfully used to examine the structure of not only the hidden cuticle, but also the hindwings. Aphanerostethus weevils have lost the ability to fly due to the gradual reduction of their hindwings, however the degree of reduction was shown to differ between species. Normally, specimens would have to be dissected to view the hindwings, but because x-ray microtomography allows for non-destructive examination of internal anatomy, it is invaluable when working with rare or precious specimens that cannot be dissected or altered.
X-ray microtomography generated 3D models of Aphanerostethus pronota with scales removed, revealing otherwise hidden differences in underlying puncture morphology A–C Aphanerostethus magnus D–F Aphanerostethus morimotoi. Image credit: Lewis et al., 2024
The presence of partially reduced wings in some species offers a fascinating glimpse into the ongoing process of evolutionary change: “Some species have almost completely lost their hindwings, while others still have non-functional half-wings with remaining vein patterns. The differing degrees in hindwing loss is not only useful for taxonomy and systematics, but also shows how different species within the same group can be at different stages of losing a historically highly important organ that played a crucial role in insect evolution,” Lewis explained.
Investing in Japan’s natural heritage
The discovery of new weevil species can be challenging for two main reasons. Firstly, weevils are incredibly diverse, making complete cataloging time consuming and tedious. Secondly, many weevil species are highly host-specific, may only inhabit very particular microhabitats, and may only be active for a short period of time as adults. For example, some species feed on a single tree species and may only occupy a certain part of a tree, such as the canopy. Furthermore, some species of weevils are strictly nocturnal and rarely observed during the daytime.
Episomus mori weevils. Photo credit: Jake H. Lewis
This extreme specialization and variation in natural history means that unless researchers investigate at night and day, across seasons, and focus on specific parts of many different plant species, they will inevitably overlook certain species.
Dr. Dan Warren, a research fellow at the Gulbali Institute for Applied Ecology and former leader of the Environmental Science and Informatics Section, emphasized the importance of investing in specimen collections: “These specimen collections are crucial for discovering new species and documenting biodiversity changes, both from human activities and natural cycles. They are essential tools for scientific research and conservation biology,” he stated. “Without proper support for them and the people who maintain them, we risk losing irreplaceable information on species and ecosystems, potentially before we even discover them.”
Euthycus weevils. Photo credit: Jake H. Lewis
“These new weevil species are part of Japan’s natural heritage, and although still poorly known ecologically, discovering and naming them is the first step towards an understanding of their biology,” Lewis added. Protected areas like Yanbaru National Park, home to the newly discovered A. japonicus, are essential to the protection of the island’s rich and endemic biodiversity.
Research article:
Citation: Lewis JH, Kojima H, Suenaga M, Petsopoulos D, Fujisawa Y, Truong XL, Warren DL (2024) The era of cybertaxonomy: X-ray microtomography reveals cryptic diversity and concealed cuticular sculpture in Aphanerostethus Voss, 1957 (Coleoptera, Curculionidae). ZooKeys 1217: 1–45. https://doi.org/10.3897/zookeys.1217.126626
The International Congress of Entomology 2024 (ICE2024), which took place on August 25-30 2024 in Kyoto, Japan, was arguably the biggest entomology event of the year. For the Pensoft team, it was an excellent chance to catch up with our authors and editors and discuss new partnerships.
At the Kyoto International Conference Center, entomologists visited lectures, symposia, and poster presentations, but they also enjoyed insect-themed haikus, origami, and artworks, and got to sample some edible insects.
— International Congress of Entomology 2024 Kyoto JP (@ice2024kyoto_jp) August 27, 2024
Meeting our authors in person was a chance for us to gather valuable feedback and make sure we are doing our best to provide entomologists with a frictionless process that makes their published research shine.
Robin Kundrata, author in ZooKeys
Deepa Pureswaran, author and editor in NeoBiota
Alain Roques, author and editor in NeoBiota
Jessica Gillung, author in ZooKeys
Ranjith AP, editor in Check List and author in ZooKeys and Journal of Hymenoptera Research
Scientific illustrator Denitsa Peneva’s beautiful works adorned Pensoft’s stand; Mostafa Ghafouri Moghaddam, subject editor at ZooKeys and Biodiversity Data Journal and author at a number of Pensoft-published journals even got to take one of her prints home after winning a raffle that Pensoft organised. He won a beautiful illustration of Bombus fragrans on Trifolium pratense.
Pensoft’s founder and CEO and one of the founding editors of the company’s flagship journal ZooKeys, Prof. Lyubomir Penev, was there representing the company and meeting with fellow entomologists.
Prof. Penev with Evgeny Zakharov of the Centre for Biodiversity Genomics
Prof. Penev with researchers Jadranka Rota, Niklas Wahlberg, Alexander Konstantinov, and Michael Schmidt
Prof. Penev with researcher Caroline S. Chaboo
They also got the chance to learn about the ARPHA Platform, a next-generation publishing solution that offers a streamlined and efficient workflow for authors, reviewers, and editors.
At ICE2024, Pensoft also presented its newest open-access jorunal, Natural History Collections and Museomics. A peer-reviewed journal for research, discussion and innovation of natural history collections, NHCM will publish under a diamond open access model, allowing free access to published content without any fees for authors or readers.
In addition to its publishing endeavors, Pensoft also presented some of the EU-funded pollinator projects that it takes part in such as Safeguard, PollinERA, and WildPosh.
ICE2024 was a chance to advance entomological science and foster collaboration within the global scientific community. For those who missed the chance to connect with Pensoft in Kyoto, the company’s journals and platforms remain accessible online, offering opportunities to read and produce groundbreaking research in insect diversity and ecology.
The demand for the digitization of natural history collections has increased with the advancement of imaging technologies. Large collections composed of millions of insect specimens are exploring efficient strategies and new technologies to digitize them. However, many of these new systems are quite elaborate and expensive, creating a need for more affordable and easy-to-use equipment.
75-by-47-cm foam platform with pinned insects in dorsal and lateral positions.
Creating a digital image for every specimen is an essential part of the DNA barcoding workflow at the Centre for Biodiversity Genomics (CBG). A newly designed imaging rig has enabled the CBG to quickly and efficiently image specimens at high quality while controlling the specimen’s orientation to emphasize key morphological characters. This system allowed the CBG to take some 190,000 images over the past year.
The SLR rig is placed on a heavy-base table to minimize vibration. The inset shows the actual rig area with specimens on the styrofoam base.
Our new ZooKeys study describes this imaging rig, which was mainly created for pinned specimens. It is inexpensive and easy to install as it uses a camera mounted to a CNC machine rig to photograph specimens at high capacity. By using a foam board to array specimens, the user can choose their orientation, which contrasts some existing methods that do not provide such flexibility. This setup produces 95 high quality images within half an hour.
Panel of example images taken with the SLR rig.
The flexibility of the imaging rig could benefit many potential users who are looking for an accessible method for larger collections of specimens. By alternating various parameters, such as the distance between the camera and specimens or the type of camera and lens used, users can adapt their system to specimens of varying sizes. With further changes to the array, the imaging rig can also be adapted to support imaging specimens on slides, within vials, or other storage solutions.
The proposed model of an entomological block is ready for printing on a standard 3D printer. In addition to the usual positioning of glue boards and labels along the Z-axis, the model also offers targeting devices that enable precise positioning of the entomological pin along the X- and Y-axes.
Dimensions of the entomological pinning block with metal rail.
The model is offered in two variants – one for immediate use after printing and another that requires the fabrication of an additional steel rail measuring 100 × 30 × 5 mm, against which the tip of the pin rests during positioning along the Z-axis. The rail is also used to increase the overall mass of the fixture. The overall dimensions of the device are 100 mm in length, 35 mm in width and 37 mm in height.
The proposed entomological block is intended for widespread use by entomologists, particularly those using insect glue boards. It is applicable to large entomological collections with individual specimen numbering and its use can ensure that entomological pins are positioned on the label so as not to disrupt the integrity of the number or barcode. It can also be modified to suit the needs of the user and can be sliced and printed directly on a 3D printer.
Methods paper:
Gjonov I, Hristozov A (2024) 3D printable model of an entomological pinning block, designed for precise positioning of entomological glue boards and labels. Biodiversity Data Journal 12: e121569. https://doi.org/10.3897/BDJ.12.e121569
Over the last few years, professor Halil Ibrahimi from Kosovo and his team have described several new species of aquatic insects revered as bioindicators of freshwater ecosystems. However, the celebration of these discoveries is tempered by alarming concerns: the newfound species are often already considered endangered, as per the criteria set forth by the International Union for Conservation of Nature (IUCN), as soon as they are described. This classification underscores the urgent need for conservation efforts to safeguard their existence.
The research team just discovered a new species, named Potamophylax kosovaensis, in the spring area of the Llap River, nestled within the Ibër River Basin. The region, known for its ecological significance, serves as a critical habitat for numerous aquatic organisms like newly discovered insect species.
Potamophylax kosovaensis.
Unfortunately, these freshwater insects are facing unprecedented threats in Kosovo and the broader Balkans region. Anthropogenic pressures, such as water pollution, littering, and the construction of hydropower plants, pose imminent risks to their survival. The degradation of their habitats not only jeopardizes their existence, but also undermines the health and integrity of entire freshwater ecosystems.
Spring area of the Llap river, from where the new species, Potamophylax kosovaensis was found.
Professor Ibrahimi emphasizes on the importance of urgent action to mitigate these threats and conserve this delicate balance of freshwater biodiversity. “The discovery of Potamophylax kosovaensis serves as a stark reminder of the fragility of our freshwater ecosystems,” he states. “We must prioritize efforts to protect these habitats and the invaluable species they harbor.”
Anthropogenic pressures in freshwater ecosystems in Kosovo endangering rich aquatic biodiversity.
Ibrahimi H, Bilalli A, Geci D, Grapci Kotori L (2024) Potamophylax kosovaensis sp. nov. (Trichoptera, Limnephilidae), a new species of the Potamophylax winneguthi species cluster from the Ibër River Basin in Kosovo. Biodiversity Data Journal 12: e121454. https://doi.org/10.3897/BDJ.12.e121454
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Its name pays homage to the dark wizard Lord Voldemort, the fearsome antagonist of the Harry Potter series, drawing parallels with the ant’s ghostly appearance.
In the sun-scorched Pilbara region of north-western Australia, scientists have unearthed a mysterious creature from the shadows – a new ant species of the elusive genus Leptanilla.
The new species, Leptanilla voldemort – L. voldemort for short – is a pale ant with a slender build, spindly legs, and long, sharp mandibles. The species name pays homage to the dark wizard Lord Voldemort, the fearsome antagonist of the Harry Potter series, drawing parallels with the ant’s ghostly and slender appearance, and the dark underground environment, from which it has emerged.
Leptanilla voldemort was discovered during an ecological survey to document animals living belowground in the arid Pilbara region of north-western Australia. Only two specimens of the bizarre new ant species were found. Both were collected in a net that was lowered down a 25-metre drill hole and skilfully retrieved while scraping against the hole’s inner surface – an innovative technique for collecting underground organisms known as ‘subterranean scraping’.
A general landscape of the Pilbara region.
Compared to other Leptanilla antspecies, L. voldemort has an extremely slender body as well as long, spindly antennae and legs. Together with its collection from a 25-metre-deep drill hole, this unusual morphologyhas left experts speculating as to whether it truly dwells in soil like other Leptanilla species, or exploits a different subterranean refuge, such as the air-filled voids and cracks that form within layers of rock deeper underground.
Leptanilla voldemort.
The long, sharp jaws of L. voldemort, however, leave little to the imagination.
“Leptanilla voldemort is almost surely a predator, a fearsome hunter in the dark. This is backed up by what we know from the few observations of specialised hunting behaviours in other Leptanilla antspecies, where the tiny workers use their sharp jaws and powerful stings to immobilise soil-dwelling centipedes much larger than them, before carrying their larvae over to feed on the carcass” said Dr Wong, lead author of the study.
A full-face view of Leptanilla voldemort, showing its sharp mandibles.
The exact prey of L. voldemort, however, is not known, though a variety of other subterranean invertebrates, including centipedes, beetles and flies, were collected from the same locality.
There are over 14,000 species of ants worldwide, but only about 60 belong to the enigmatic genus Leptanilla. Unlike most ants, all species of Leptanilla are hypogaeic – their small colonies, usually comprising a queen and only a hundred or so workers, nest and forage exclusively underground. To adapt to life in darkness, Leptanilla workers are blind and colourless. The lilliputian members of the ant world, these ants measure just 1 to 2 millimetres – not much larger than a grain of sand – allowing them to move effortlessly through the soil. Due to their miniscule size, pale colouration, and unique underground dwellings, finding Leptanilla species is a challenge even for expert ant scientists, and much of their biology remains shrouded in mystery.
While Australia boasts some of the highest levels of ant diversity in the world – with estimates ranging from 1,300 to over 5,000 species – L. voldemort is only the second Leptanilla species discovered from the continent. The first, Leptanilla swani, was described nearly a century ago – from a small colony found under a rock in 1931 – and has almost never been seen since.
With its formation beginning approximately 3.6 billion years ago, the Pilbara is one of the oldest land surfaces on Earth. Despite the scorching summers and meagre rainfall, the region harbours globally important radiations of underground invertebrates. Adding to the unique biodiversity of this ancient landscape, the discovery of the enigmatic ant L. voldemort is a testament to the wizardry of nature and the mysteries of life in the depths of darkness.
Research article:
Wong MKL, McRae JM (2024) Leptanilla voldemort sp. nov., a gracile new species of the hypogaeic ant genus Leptanilla (Hymenoptera, Formicidae) from the Pilbara, with a key to Australian Leptanilla. ZooKeys 1197: 171-182. https://doi.org/10.3897/zookeys.1197.114072
The island of Cyprus, although considered a hotspot for biodiversity in the Mediterranean, is more famous for its beautiful sunny coasts than for its insect fauna. Nevertheless, some visitors of its highly populated beaches, with their observations and curiosity, have provided important information for a species never recorded before on the island: a giant water bug, also known as a toe biter.
Giant water bugs.
Scientists Michael Hadjiconstantis from the Association for the Protection of Natural Heritage and Biodiversity of Cyprus, Iakovos Tziortzis from the Ministry of Agriculture, Rural Development and Environment of Cyprus, and Kadir Boğaç Kunt from the Cyprus Wildlife Research Institute collected information and specimens from an increasing number of records of the giant water bug on the east coastline of the island in late spring and summer of 2020 and 2021. The species, known for inhabiting ponds and slowly moving freshwaters, had never been recorded on the island before, although established populations are known in adjacent Mediterranean countries such as Greece, Turkey, and Israel.
Locations of the reported Giant water bug sightings in Cyprus.
Also referred to as Electric light bug, this giant water bug is described as a vicious hunter, praying on invertebrates, fish, turtles, and even birds. What is even scarier, as the largest European true bug and the largest European water insect and measuring up to 12 cm, it has a reputation of inflicting very painful bites when handled carelessly.
A giant water bug found in Paralimni.
Its appearance, mainly on the eastern coastal front of the island, was initially recorded by swimmers, who were surprised by the fearsome looks and size of the bug. They either directly contacted the experts or published photos and videos online, mainly on Facebook groups related to biodiversity. The authors collected some of the specimens for further study. They also proceeded with an extensive online search on relevant online observation platforms (i.e. iNaturalist) in order to track any other reports of the species on the island. In addition, they sampled nearby wetlands, but did not spot the bug. End to end, a total of seven sightings were eventually recorded: five from social media and two after direct communication with the author team. Two specimens were obtained and examined morphologically to verify the species. The observations were recorded in a research article in the open-access journal Travaux du Muséum National d’Histoire Naturelle “Grigore Antipa”.
A giant water bug found in Paralimni.
Having in mind that the toe biter is an iconic species accompanied by creepy stories concerning its encounters with humans, the authors assume that it is unlikely that it had gone unnoticed for too long. They consider it possible that several migration events might have been triggered in a short period of time by nearby countries hosting the species, such as Israel, Lebanon, and Syria. The specimens could have been transferred by wind or sea currents, as assumed by other researchers, or could have been driven by a decrease in food resources in their initial area of distribution.
Despite the number of recordings in a short timeframe, no conclusions can be drawn for the moment on the establishment of a population of the species on the island. This is further to be investigated, and as the initial recording of the species, citizen science can have an important role in this. The authors urge the public to be alert: “Naturalists looking for alien-like critters can provide valuable information on the presence and a possible establishment of the species through citizen science.” Until then, they warn: “Cypriots should keep their eyes open and their toes out of the water”.
Research article:
Hadjiconstantis M., Tziortzis I., Kunt KB (2023). On the importance of citizen-science: first records of the Giant water bug Lethocerus patruelis (Hemiptera, Belostomatidae) in Cyprus. Travaux du Muséum National d’Histoire Naturelle “Grigore Antipa” 66 (2): 291–299. https://travaux.pensoft.net/article/94457/
Pensoft is amongst the participants of a new Horizon Europe project aiming to better evaluate the risk to wild pollinators of pesticide exposure, enhancing their health & pollination services.
Wild fauna and flora are facing variable and challenging environmental disturbances. One of the animal groups that is most impacted by these disturbances are pollinators, which face multiple threats, driven to a huge extent by the spread of anthropogenic chemicals, such as pesticides.
WildPosh (Pan-european assessment, monitoring, and mitigation of chemical stressors on the health of wild pollinators) is a multi-actor, transdisciplinary project whose overarching mission and ambition are to significantly improve the evaluation of the risk to wild pollinators of pesticide exposure, and enhance the sustainable health of pollinators and pollination services in Europe.
On 25 and 26 January 2024, project partners from across Europe met for the first time in Mons, Belgium and marked the beginning of the 4-year endeavour that is WildPosh. During the two days of the meeting, the partners had the chance to discuss objectives and strategies and plan their work ahead.
This aligns with the objectives of the European Green Deal and EU biodiversity strategy for 2030, emphasising the need to reduce pollution and safeguard pollinators. WildPosh focuses on understanding the routes of chemical exposure, evaluating toxicological effects, and developing preventive measures. By addressing knowledge gaps in pesticide risk assessment for wild pollinators, the project contributes to broader efforts in biodiversity conservation.
During the kick-off meeting in Mons, WildPosh’s project coordinator Prof. Denis Michez (University of Mons, Belgium) gave an introductory presentation.
As a leader of Work Package #7: “Communication, knowledge exchange and impact”, Pensoft is dedicated to maximising the project’s impact by employing a mix of channels in order to inform stakeholders about the results from WildPosh and raise further public awareness of wild and managed bees’ health.
Pensoft is also tasked with creating and maintaining a clear and recognisable project brand, promotional materials, website, social network profiles, internal communication platform, and online libraries. Another key responsibility is the development, implementation and regular updates of the project’s communication, dissemination and exploitation plans, that WildPosh is set to follow for the next four years.
“It is very exciting to build on the recently concluded PoshBee project, which set out to provide a holistic understanding of how chemicals affect health in honey bees, bumble bees, and solitary bees, and reveal how stressors interact to threaten bee health. WildPosh will continue this insightful work by investigating these effects on wild pollinators, such as butterflies, hoverflies and wild bee species, with the ultimate goal of protecting these small heroes who benefit the well-being of our planet,”
says Teodor Metodiev, WildPosh Principal Investigator for Pensoft.
For the next four years, WildPosh will be working towards five core objectives:
1) Determine the real-world agrochemical exposure profile of wild pollinators at landscape level within and among sites
2) Characterise causal relationships between pesticides and pollinator health
3) Build open database on pollinator traits/distribution and chemicals to define exposure and toxicity scenario
4) Propose new tools for risk assessment on wild pollinators
5) Drive policy and practice.
Consortium:
The consortium consists of 17 partners coming from 10 European countries. Together, they bring extensive experience in Research and Innovation projects conducted within the Horizon programmes, as well as excellent scientific knowledge of chemistry, modelling, nutritional ecology, proteomics, environmental chemistry and nutritional biology.
Insects are among the most prolific and successful invaders of new habitats, but not all regions are equal in the numbers of insects that have spread beyond their borders.
Flows of non-native insects between N. America, Europe, and Australasia. Numbers are the total count of species established from donor to recipient.
European insects, in particular, stand out as highly successful invaders into other world regions. Why? Biologists have long understood that species are spread through international trade: insects are frequent stowaways in trade goods, and the value of international trade between world regions can be a good predictor of how many non-native species are exchanged.
However, recent research led by Dr. Rylee Isitt of the University of New Brunswick, and published in the journal NeoBiota, shows that after accounting for patterns of international trade, the number of insects that have spread from Europe into North America, Australia, and New Zealand far exceeds expectations.
Since patterns in international trade can’t explain these insect invasions, the researchers looked for other potential explanations. It’s possible that European insects are simply more numerous or better invaders than their North American or Australasian counterparts. However, Dr. Isitt and his collaborators didn’t find evidence for that – at most, there are only slightly more European species with the capacity to invade compared to North American and Australasian species.
Another possibility is North American and Australasian habitats are easier to invade than European ones. But prior research has shown that Europe has been heavily invaded by Asian insects, suggesting that it is no more resistant to invasion than North America or Australasia.
Instead, Dr. Isitt and collaborators have proposed that the abundance of European insect invaders may be a result of deliberate introductions of non-native plants into Europe’s colonies. Plants introduced into European colonies could have promoted the spread of European insects into North America and Australia by two different means.
First, insects may have been introduced along with the plants. Second, introduced plants may have provided suitable food and habitat for subsequent arrivals of non-native insects, who might have otherwise found the native flora to be unpalatable or unsuitable as a habitat.
Cumulative discoveries (observed and modelled) and establishments (modelled) of non-native insects exchanged between Europe (EU), North America (NA), and Australasia (AU) versus cumulative import value (inflation-corrected to 2020 British pounds sterling, billions), 1827–2014. Alternating background shading indicates decadal increments, with shading omitted prior to the 1940s for clarity.
Although the researchers haven’t completely resolved the mystery of the overabundance of European insects, they have ruled out several possibilities, leaving the connection to introduced plants as the prime suspect. The next steps? Determining to what extent European insects spread through introduced plants compared to insects from other world regions.
Because invasive species are reshaping our world, we need to understand how they move and establish. Evidence is mounting that trade in plants and plant products is responsible for a large proportion of insect invasions. If the researchers’ hypothesis is correct, the spread of European insects may be a remarkable example of the unintended consequences of deliberate plant introductions.
Research article:
Isitt R, Liebhold AM, Turner RM, Battisti A, Bertelsmeier C, Blake R, Brockerhoff EG, Heard SB, Krokene P, Økland B, Nahrung HF, Rassati D, Roques A, Yamanaka T, Pureswaran DS (2024) Asymmetrical insect invasions between three world regions. NeoBiota 90: 35-51. https://doi.org/10.3897/neobiota.90.110942
