visitors

Visiting Scientist Feature: Dr. Alexey Reshchikov

Just before Christmas, we hosted Dr. Alexey Reshchikov, Senior Associate Researcher at Sun Yat-Sen University, who was here to examine recently collected wasp specimens.

Dr. Reshchikov is a taxonomist that specialises in the study of wasps from the family Ichneumonidae, also known as ichneumon wasps. The name ‘ichneumon’ is derived from Greek words that mean ‘tracker’ and ‘footstep’, which aptly describes the way these insects live and reproduce.

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Dr. Reshchikov at his work station in the LKCNHM research lab. Photo by Clarisse Tan.

Savvy Killers

As they are parasitoids (organisms that develop inside a ‘host’ organism, eventually killing the host), female ichneumon wasps are highly skilled at tracking down suitable hosts. As the larvae grows, the host is slowly devoured, with its vital organs often left intact till near the end. In some cases, when the larvae are ready to emerge, chemicals are released to further paralyse the host, as the larvae gnaw their way out. Sounds…a little morbid, doesn’t it?

However, it was this exact trait that attracted Dr. Reshchikov to study the ichneumon wasps in greater detail, as he found it fascinating that they ‘attack’ many other different groups of insects. Also, as many of their hosts are pests of agricultural crops and forest plants, ichneumon wasps are useful as beneficial pest control agents (example here).

Ichneumon wasps are commonly found in various habitats, and are also arguably one of the largest animal family, with about 24,000 species known and an estimated 100,000 species worldwide. Clearly, there are still many more species of ichneumon wasps in the wild that have not been discovered. As our museum researchers have accumulated a substantial amount of ichneumon wasps from recent survey efforts, we invited Dr. Reshchikov to the museum on his first visit to provide his expertise on sorting and identifying these specimens.

During his two-week visit, Dr. Reshchikov examined around 2,000 specimens of ichneumon wasps that have been pre-sorted into various groups based on DNA analysis. After meticulously sorting and identifying the wasps, he has found three species of ichneumon wasps new to science to start with, with many more to follow, a finding that greatly excites him.

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Lateral view of a female ichneumon wasp, Klutiana sp. Photo by Ang Yuchen.

Globetrotting Scientist

The study of insects has been his life-long passion, first discovered as a child on a summer vacation trip to the Russian countryside, where he got closer to nature and became intrigued by insects. This scientific passion takes him to places far and wide—he once spontaneously turned back en route to a wasp conference in Budapest, Hungary to join an expedition to remote corners of Mongolia for a month searching for his favourite group of wasps!

However, he doesn’t devote all his trips overseas to insect explorations, of course. An avid traveller, Dr. Reshchikov has been to places such as Estonia, India, Thailand and Nepal. He also enjoys snorkelling in Southern Thailand, and skiing in Norway and Russia. When asked which place he would like to travel next, he mentioned the Indonesian resort island of Bali, for a “nice relaxing trip”.

How does this seasoned traveller find Singapore then? For one, he really loves the large variety of food available here, as he is a fan of different types of cuisine, ranging from spicy Thai food to delicate Cantonese dim sum. Also, despite it being his first trip here, the weather does not faze him at all, as he has been to other tropical countries. In addition, he mentioned that he really enjoyed his time at the museum, and would love to come back to visit.

Likewise, it was wonderful having Dr. Reshchikov here, and we look forward to seeing him again!

Visiting scientist feature: Arlo Hinckley Boned

Earlier this week, we hosted a research visit by Mr. Arlo Hinckley Boned, who came to collect data from the mammals in the Zoological Reference Collection.

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Arlo and a red giant flying squirrel collected by Charles Hose.

Arlo hails from the Conservation and Evolutionary Genetics Group of the Doñana Biological Station in Spain, and is working on the diversity of shrews and gymnures across biogeographical realms for his Phd thesis.

He recently completed four months of fieldwork in Borneo, sampling areas in Sabah, Malaysia, for small mammals. During this period, he shared that he lost a total of 9 kg from the intense fieldwork, but gained interesting insights on the distribution and diversity of the mammals there. Arlo maintains the Small Mammals of Borneo blog with his colleagues where they share about small mammals and their field experience.

As his research group is particularly interested in the diversity of vertebrates in the Sunda shelf, Arlo also examined specimens of the red giant flying squirrel (Petaurista petaurista) in addition to gymnures and moonrats. On his last day, Arlo was particularly excited to come across a red giant flying squirrel specimen collected by Charles Hose, a prominent zoologist and British colonial administrator.

We wish Arlo all the best for the rest of his work in the region.

LKCNHM Visiting Fellow: Prof Peter Lucas on plant traits

Last week, the museum hosted Prof Peter Lucas from Kuwait University as part of the LKCNHM Visiting Fellowship Scheme. During his visit, Prof Lucas was hosted by Assoc Prof Hugh Tan, and his colleagues and their students from the Department of Biological Sciences and Yale-NUS College.Peter Lucas

One aspect of their collaborative study was on the fracture toughness of leaves, which has a direct bearing on herbivory and leaf age. Prof Lucas is one of the world’s foremost authorities in this area.

During his stay here, they explored measures for mechanical and structural leaf traits to allow meaningful comparison across different plant and leaf types.

Their findings could tell us why some herbivores leave certain leaves alone!

Prof Lucas also visited the museum’s gallery and checked out one of our crowd favourites, which happens to be a massive herbivore too!