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Marcus Chua

@marcuschua.bsky.social
109 followers 64 following 99 posts

Studies and curates mammals of SE Asia. Biodiversity, conservation, and natural history museums. Also swims, hifi, and ramen. Same handle on the x-bird app. 🇸🇬 sites.google.com/view/marcuschua

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Marcus Chua @marcuschua.bsky.social · 11/09/2026
Nerding out on these twin papers using neat science to overturn traditional beliefs about animals: @weisbeckerbblab.bsky.social et al. show morphology isn't dead and the thylacine has a chimeric skull that's more snap predator than sheep-killing-marsupial wolf. www.nature.com/articles/s41...
nature.com
Skull morphology of the extinct Tasmanian tiger suggests unique biting style - Nature Communications
The recently extinct thylacine was Australia’s largest marsupial predator and famously likened to dog-family carnivorans such as wolves. However, here the authors show that its skull functioned differ...
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Ng Ting Hui @siputairtawar.bsky.social · 03/08/2026
Enjoyed listening to kancil stories by @marcuschua.bsky.social #SAGE2026
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Marcus Chua @marcuschua.bsky.social · 26/07/2026
Hear hear: From snapshots to solutions: making camera-trap monitoring matter for conservation "We must distinguish between monitoring intended to trigger immediate action and monitoring intended to serve as a biodiversity inventory or a baseline for future generations." doi.org/10.1093/bios...
doi.org
From snapshots to solutions: making camera-trap monitoring matter for conservation
Monitoring is fundamental to conservation, providing the vital data required to track progress against national and international biodiversity targets (Ben
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Marcus Chua @marcuschua.bsky.social · 28/06/2026
Opening of @theATBC 62th annual meeting at Xishuangbanna, China. Some 1,000 participants from all over the world focused on tropical biology and conservation. I like that there’s no plastic casing for the tag. Instead it’s a pulp card that can sprout flowers. #ATBC2026
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Marcus Chua @marcuschua.bsky.social · 27/06/2026
Still reeling from the wonderful trip back to Washington DC, hanging out with mammalogists and friends and all the noshes I’ve missed. And a week later it’s time to go to Yunnan, China for a meeting of tropical biologists. Can’t wait.
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Marcus Chua @marcuschua.bsky.social · 15/06/2026
Late start for the @mammalogists.bsky.social #ASM2026 meeting this morning. Went out for a walk by the waterfront and saw some marine mammals and an enormous carrier. Prepping my talk for the community structure, niche overlap & coexistence session at 1:45 pm!
Marine mammal?Lovely marine mammal mural
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Marcus Chua @marcuschua.bsky.social · 14/06/2026
Day 1 @Mammalogists #ASM2026 went by in a blink of an eye. Most striking slide by Daniel Chavez: the twisted impact of colonization on Latin American fauna, increasing effective pop. size! Also hands on with the incredibly well-made @wildlifeacoustics.com SM5BAT (a cool $1,049 RRP!).
Increase in effective population size of puma after European colonization.Incredibly well-made SM5BAT.
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Marcus Chua @marcuschua.bsky.social · 13/06/2026
The mercury hit a sweltering 36°C (97°F) at Norfolk, Virginia where Mammalogists are having their annual #ASM2026 meeting. It’s so bad that even the resident grey squirrel is splooting to thermoregulate.
Grey squirrel splooting
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Marcus Chua @marcuschua.bsky.social · 12/06/2026
Back in the DC area for the American Society of Mammalogists meeting #ASM2026. This past week has been a hectic non-stop cycle of otters, civets, and otter civets at the Smithsonian National Museum of Natural History.
OttersCivetsOtter civets!
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Marcus Chua @marcuschua.bsky.social · 10/06/2026
Some kind of grand irony that a dugong stranded in Singapore a day after the marine mammal stranding workshop. www.straitstimes.com/singapore/en...
straitstimes.com
Dead dugong found at Bedok Jetty
Discover the first recorded sighting of a dead dugong at Bedok Jetty since 2021, highlighting the vulnerability of this marine mammal. Read more at straitstimes.com. Read more at straitstimes.com.
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Marcus Chua @marcuschua.bsky.social · 03/06/2026
At the Asian Marine Mammal Stranding Network symposium and workshop. Keynote by Lemnuel Aragones highlighted the increasing trend of marine mammal stranding in Asia. A high proportion (vs. world average; 5–15%) are live stranding—80% in 🇵🇭.
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Marcus Chua @marcuschua.bsky.social · 02/06/2026
[New paper] A whale carcass found off Tanjong Pagar in September 2025 has been identified as an Omura’s whale—one of the world’s least-known baleen whales. This is Singapore’s first recorded stranding of the species. www.researchgate.net/publication/...
researchgate.net
(PDF) Biodiversity Record: Omura's whale carcass off Tanjong Pagar
PDF | The floating carcass of a rorqual whale was seen stranded along the pilings of a wharf at Tanjong Pagar Terminal. Six days later, on 12 September... | Find, read and cite all the research you ne...
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Marcus Chua @marcuschua.bsky.social · 31/05/2026
How did I miss this: Camera-trap survey confirms the melanistic leopard cat Prionailurus bengalensis in the Sundarban Biosphere Reserve by Jakher et al. (2025). What a pretty black and gold speckle! doi.org/10.1017/S003...
Melanistic leopard cat in the Sundarban Biosphere by Jakher et al. (2025).
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Marcus Chua @marcuschua.bsky.social · 19/05/2026
Sadly, this Javan pipistrelle found with a huge distended abdomen did not survive even after veterinary care. She was initially thought to be pregnant, but necropsy showed her abdomen was filled with fluid. Honored her life by preparing her as a dry specimen. RIP little bat.
Photo by Emma Chao. Specimen pinned after skinning and stuffing.Dried museum study skin.
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Marcus Chua @marcuschua.bsky.social · 13/05/2026
First camera trap distance sampling study from Indonesia. Beno et al. estimated densities of tiger prey, and also compared species detections between random (for CTDS) and systematic grid camera trap placements. Random placement missed most carnivorans! doi.org/10.1002/wlb3...
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Marcus Chua @marcuschua.bsky.social · 14/04/2026
Attended an exhibition by Drama Box: There is No Tiger in the Mountain. It’s about human-macaque interaction and co-existence on Pulau Ubin and uses the island as a canvas, with a mobile exhibit (Ubin taxi) and soft sculptures around a village house. www.dramabox.org/eng/events-t...
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Marcus Chua @marcuschua.bsky.social · 06/04/2026
I don't usually post zoo science but here's a cool study finding long-term survival gains in big cats (lion, tiger, snow leopard, leopard, jaguar) under ex situ care since 1874. Authors looked at life expectancy, lifespan equality at birth, and 1st year survival. doi.org/10.1016/j.bi...
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Marcus Chua @marcuschua.bsky.social · 26/02/2026
The oldest known wild Sunda clouded leopard is a 6.51-year-old female! Similar to the oldest known mainland leopard cat too. Pretty neat what long-term camera trap studies can tell us. onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
Estimating Sunda Clouded Leopard Lifespans From Minimum Residence Times via Long‐Term Photo‐Tracking
How long do Sunda clouded leopards live in the wild? Detectability challenges and transient behavior make this elusive species difficult to track. Based on compiled photographic records, we report th....
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Marcus Chua @marcuschua.bsky.social · 18/02/2026
How Singapore counts its population of world famous otters. Featuring Otterman @sivasothi.bsky.social and the Otter Working Group. www.channelnewsasia.com/singapore/ot...
channelnewsasia.com
'It's detective work': Finding and counting Singapore's otters
More than 20 otter watchers trawled parks and waterways over two months, photographing the animals for the third population census in Singapore.
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Marcus Chua @marcuschua.bsky.social · 17/02/2026
Lovely creative (and conservation focused) feature of horse-y wildlife in Singapore by Letitia Chen, Ang Qing and Lim Yong of the Straits Times for the Year of the🐎. Bonus points for the pun too. www.straitstimes.com/singapore/en...
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Marcus Chua @marcuschua.bsky.social · 11/02/2026
Tribute to the largest poop I ever picked up on #NationalPoopDay It happened just this weekend, and belongs to a large wild odd-toed ungulate.
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Marcus Chua @marcuschua.bsky.social · 26/01/2026
Installation art Ikan besar skali by Hu Qiren at the Esplanade until Jul 2026. It “reimagines the grandeur of historical whale displays, bridging natural history with contemporary art.” Metal-plated 3D printed resin. Neat.
Silver 3D printed whale skeleton suspended at the Esplanade Concorse.
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Marcus Chua @marcuschua.bsky.social · 19/01/2026
NUS study calls for reduced boat speeds, limited entry near S’pore marine mammal hot spots Indo-Pacific humpback dolphins and dugongs have endured in Singapore’s waters despite massive land reclamation since the 1800s and its status as a shipping hub. www.straitstimes.com/singapore/en...
straitstimes.com
NUS study calls for reduced boat speeds, limited entry near S’pore marine mammal hot spots
The study trawled through records from 1820 to 2024. Read more at straitstimes.com. Read more at straitstimes.com.
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Marcus Chua @marcuschua.bsky.social · 11/12/2025
Lovely coverage of our research findings of mouse-deer population spike after African Swine Fever wild pig mortality in Singapore by @mongabay.com's Carolyn Cowan! news.mongabay.com/2025/12/refo...
news.mongabay.com
Reforestation and wild pig decline spark surge in miniature deer in Singapore
Rabbit-sized, nocturnal and elusive, the greater mouse-deer hadn’t been seen in Singapore for more than 80 years. Researchers long presumed it was locally extinct. In 2008, however, researchers confir...
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Marcus Chua @marcuschua.bsky.social · 08/12/2025
Thanks Ang Qing for writing this news story on our research findings of mouse-deer population boom on Pulau Ubin after African Swine Fever all but wiped out wild pigs there. And kudos for getting Bill Laurance & Matt Luskin to comment on the findings. www.straitstimes.com/singapore/en...
straitstimes.com
How a fatal virus sparked Pulau Ubin’s mouse-deer boom
The island is now the easiest place in the world to encounter the greater mouse-deer. Read more at straitstimes.com. Read more at straitstimes.com.
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Marcus Chua @marcuschua.bsky.social · 28/11/2025
[New paper] After the 2023 African Swine Fever outbreak, greater mouse-deer density on Pulau Ubin, Singapore surged to 293/km2—the highest known for the species. Likely drivers: >98% wild pig mortality, active reforestation and low predation pressure. doi.org/10.1016/j.bi...
Graphical abstractGreater mouse-deer on forest floor.
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Marcus Chua @marcuschua.bsky.social · 23/10/2025
RIP boots: 2015–2025 I didn’t expect we’d be such close friends again, protecting me through two big whale defleshing ops.
Yellow Wellington boots, one with split on the heel.
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Marcus Chua @marcuschua.bsky.social · 18/10/2025
It’s been a month into the salvage of the roqual whale, with the days long and I’ve been onsite daily during workdays. So touched by my colleagues showing concern about my wellbeing, feeding and hydration. Still don’t know who the snacks are from but thanks!
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Marcus Chua @marcuschua.bsky.social · 28/09/2025
The salvage of this dead baleen whale has been the main preoccupation of my waking hours since the start of September. www.straitstimes.com/singapore/en...
straitstimes.com
Work to preserve baleen whale that surfaced off Tanjong Pagar under way
The 6.3m-long carcass is likely to have been swept into Singapore’s waters. Read more at straitstimes.com. Read more at straitstimes.com.
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Reposted by Marcus Chua
Arlo Hinckley @arlohinckley.bsky.social · 19/09/2025
Back in Spain after two great weeks at the Lee Kong Chian and Thailand National Natural History Museums. Always a pleasure to catch up with friends, start new collabs and examine amazing specimens. Huge thanks to @marcuschua.bsky.social and the THNHM collections team for being such wonderful hosts!
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Marcus Chua @marcuschua.bsky.social · 06/09/2025
The LKCNHM Public Research Symposium 2025 is underway! My colleagues and I will be sharing about specimens, science and stories from the museum with members of the public, and I will be giving a talk and moderating a panel discussion. Excited to share our science and research!
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Marcus Chua @marcuschua.bsky.social · 15/08/2025
[New paper] How do 8 small wild cat species coexist in SE Asia? Do they avoid competition by carving out unique niches? Our study analyzed 465 museum skulls to see how their anatomy helps them share the space. 🧵 doi.org/10.1038/s415... /w @wildcru.bsky.social @ntlmuseumsscot.bsky.social
Craniological differentiation amongst Southeast Asian small cats.
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Marcus Chua @marcuschua.bsky.social · 10/07/2025
A story on the leopard cat in Singapore is featured in Our Wild Neighbours by Yap Seow Choong (in Chinese). Also honored to be featured as a wildlife researcher in it! Available in bookstores and online stores.
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Marcus Chua @marcuschua.bsky.social · 04/07/2025
We often hear of humans feeding wildlife, but occasionally the tables are turned! Towers et al. reviews attempts by wild killer whales to provision people with food items. Fish, a whole seal, and even seaweed! I want to be fed by a killer whale! dx.doi.org/10.1037/com0...
Figure 3 from Towers et al. (2025) showing images of killer whales attempting to provision food items to humans.
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Reposted by Marcus Chua
Sivasothi aka Otterman @sivasothi.bsky.social · 28/06/2025
Seeking nature in Singapore: guided walks, talks, workshops, etc by nature groups are listed at sg60naturecalendar.wordpress.com
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Marcus Chua @marcuschua.bsky.social · 21/06/2025
It’s been a memorable month: Finally finished my mouse-deer dissertation and defense Qualified for the World Aquatics Masters Championships in SG 2025 Mayhem in Singapore Penang Really grateful for everyone who was part of this.
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Prosanta Chakrabarty @prosanta.bsky.social · 24/05/2025
More details coming soon, but mark your calendars ... Breakout meeting for @systbiol.bsky.social‬ The Society of Systematic Biologists - will be Jan 9-11 in Baton Rouge! Topic is 'The Importance of Natural History Collections' @jembrown.bsky.social is primary host/organizer ssb2026.github.io
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Marcus Chua @marcuschua.bsky.social · 22/05/2025
Super fascinating Han et al. (2025) found leopard cats occupied human settlements in China for 3,500 years before domestic cats in 600-900 CE. Evidence include ancient DNA and this super cute 168 BC painting of a supposed leopard cat. Also, a co-author's name is Miaomiao. doi.org/10.1101/2025...
Figure from Han et al. (2025) preprint.
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Marcus Chua @marcuschua.bsky.social · 19/05/2025
I thought it'll be a uniquely Singapore thing, but someone else found leopard cats on reclaimed land—in South Korea! Lee et al. (2025) tracked leopard cats on grassland and rice fields but they seem to avoid areas of human use. Adapted 🛰️ maps by me. doi.org/10.1007/s133...
Before and after land reclamation satellite maps cobbled together by me with adapted leopard cat home range figures from Lee et al. (2025).
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Rudolf Meier @rudolf-meier.bsky.social · 14/05/2025
The top 10 flying insect clades rule the skies—but defy the rules. Weak or inverted latitudinal diversity gradients leave biogeographers puzzled. Entomologists? Mildly amused. www.biorxiv.org/content/10.1...
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Marcus Chua @marcuschua.bsky.social · 08/05/2025
Tap and zoom. Whose teeth is this?
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Marcus Chua @marcuschua.bsky.social · 28/04/2025
I’d like to thank this reviewer who completed their review of our manuscript in one day (!); even before the other invited reviewer responded. [just hoping it wasn’t a negative one 🤣] Also this tracking portal is like receiving an Amazon order.
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Marcus Chua @marcuschua.bsky.social · 29/03/2025
Thanks Raj for telling the story of what goes on after we pick up a dead animal for science or education at the natural history museum! Kudos to the roadkill network in Singapore too. Watch out for the nerdy dad jokes. www.channelnewsasia.com/today/visual...
channelnewsasia.com
From 100-year-old carcasses to recent roadkill, this museum curator looks after them all | Video
A dead animal can give us clues about climate changes and disease surveillance. CNA TODAY speaks to 41-year-old Marcus Chua, curator of mammals at the Lee Kong Chian Natural History Museum, to find ou...
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Marcus Chua @marcuschua.bsky.social · 27/03/2025
Looks like another albino or leucistic mouse-deer has been recorded, this time in Vu Quang National Park in Viet Nam. From the looks and location, it is likely what we recognise as the lesser mouse-deer (Tragulus kanchil). vnexpress.net/cheo-cheo-ba...
Photo by Hung Le
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Marcus Chua @marcuschua.bsky.social · 13/03/2025
Google reminded me about this 1k citation milestone today. Carried so hard by my co-authors here. Glad for all the opportunities to do science together and add to the knowledge of this world we live in. scholar.google.com/citations?us...
scholar.google.com
Marcus AH Chua - ‪Cited by 1,007‬
‪Lee Kong Chian Natural History Museum, National University of Singapore; George Mason University‬ - ‪Mammalogy‬ - ‪Conservation Biology‬ - ‪Natural History‬
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Marcus Chua @marcuschua.bsky.social · 02/03/2025
[New paper] An albino Malayan greater bamboo bat—possibly the first record of albinism in this bamboo hollow-roosting group. Yes, he's very cute. Unfortunately, he was found in a shoe cabinet and didn't make it. Now a specimen in our museum's mammal collection. lkcnhm.nus.edu.sg/wp-content/u...
Pale skin and white hair of the albino Malayan greater bamboo batA friend described him as "fairy-like"
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Marcus Chua @marcuschua.bsky.social · 18/02/2025
Cheap and old camera traps are the worst! Granted, only three models were tested, but it tells us what we don't want to hear. As with most tech, you get what you pay with camera traps. doi.org/10.1002/ece3...
doi.org
Fox on the Run—Cheaper Camera Traps Fail to Detect Fast‐Moving Mesopredators
Top left: proportion of deer of total deer images taken in light and darkness for each camera trap type. Top right and bottom images: The same deer event as taken by each camera. Notice differences i...
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Marcus Chua @marcuschua.bsky.social · 04/02/2025
Singapore Wildcat Action Group: "We would like to monitor the presence of leopard cats in the area near the construction of Singapore’s new airport terminal because of the high number of heavy vehicles in that area." www.straitstimes.com/singapore/en...
straitstimes.com
Singapore’s only wild cat may have found a new – but dangerous – home
The nocturnal leopard cat has been sighted near the construction of Changi Airport's new terminal. Read more at straitstimes.com.
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Marcus Chua @marcuschua.bsky.social · 04/02/2025
Just reviewed a revised manuscript for a mammal journal where it appears that I'm the only reviewer. I've submitted and reviewed for the journal before and there were always at least 2 reviewers. Is that the norm now, are reviewers so hard to find, are standards slipping, or all the above?
Authors response to the reviewer's comments
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Marcus Chua @marcuschua.bsky.social · 31/01/2025
Made this Chinese horror-scope 12 years ago. After a full zodiac cycle, it’s relevant again. Context: In 2013 the government released plans that a new train line would cut across a nature reserve. Nature folks were concerned. Through engagement, the plans were made more sensitive to nature.
Chinese zodiac horoscope to the year of the snake in the context of biodiversity.
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