The first GAA3 meeting for Red Listing the amphibians of southern African 

The first Global Amphibian Assessment (GAA) took place in various workshops around the world from 1999 to 2002. I got involved by helping to assess the South African pipids while at University of the Western Cape (Measey 2004), and later at a workshop in Watamu, Kenya in April 2002.

I hosted the first re-assessment of South African amphibians in 2009, a process that incorporated the published strategy for conservation research on southern African amphibians. Together with other members of the workshop, we turned the results of this meeting into a book, which I edited, and was published by SANBI in early 2011. The book is available as a free pdf to download, and you can get your own copy here. 

We repeated the Red Listing process again in November 2015 (see here), and these results were carried into the second Global Amphibian Assessment (GAA2), one of the outputs of which was published last year (see here)

The assessments should be updated every five years, and so it was high time to do it again. This time we got together at the Calders Hotel in Fish Hoek.

It’s quite fun to see the faces in these images ageing. There are the loss of a few of the older faces too. But the really great thing was to see the large number of new faces who brought with them some excellent expertise that amazed me. The workshop was hosted by Josh Weeber and current southern African Amphibian Specialist Group Chair Jeanne Tarrant. This is the first workshop of the GAA3

Although we spent four days solidly assessing the amphibians, we didn’t finish. Lots more work to do before we can submit the updates and have them published on the Red List site. Stay tuned for this update.

A talk for the School of Natural Sciences at Macquarie University

As I was already in Australia and had to fly back via Sydney, I decided that I’d take a stopover on the way back and visit colleagues at the Department of Biological Sciences at Macquarie University. There are a number of notable researchers there including Martin Whiting (previously of Wits University in South Africa), Georgia Ward-Fear (with whom I had written a book chapter but never met) and Rick Shine (he of the snake and cane toad fame).

There is another important connection. Martin was the former PhD supervisor of James Baxter-Gilbert, who went on to become my post-doc in Stellenbosch University. http://john.measey.com/People/Measey-Lab-Alumni

I was very fortunate to be hosted by Martin at his home and to get to know his family and their adventures. Martin very kindly took me frogging on a wild and windy night and I got to see a few of the region’s amphibians (Adelaide was way too dry).

As well as having a great time catching up with new and old friends at Macquarie, I was able to give a talk for the School:

Measey, J. (2024) What can biological invasions teach us about rapid evolutionary change? 20 February 2024 School of Natural Sciences at Macquarie University

A month in the Cassey lat at the University of Adelaide

In January 2020, Phill Cassey invited me, Reid Tingley (Monash University) and Julie Lockwood (Rutgers University) to participate in an ARC Discovery grant application that he was submitting. The aim of the grant was to study the reptile trade in Australia and using past data make predictions on future trends. A large part of the data was set to acquire global data for traded reptiles to determine the demand for global species so that Australian taxa could be placed into context.

Looking back, January 2020 was just before the global pandemic, and none of us knew what was going to unfold over the coming two years. Happily, in November 2020 (despite the pandemic) the Discovery grant was funded and this included funding for a trip to Australia for me to dedicate some time to the project.

In November 2023, Phill reached out to me and reminded me that the project was soon to end and that I should either commit to visiting Australia or lose the opportunity. Happily, I was able to plan a trip in January 2024 that coincided with New Year holidays in China. And so it was that I spent a month working in the Cassey lab at the University of Adelaide.

First, I should say a big thank you to Phill Cassey and members of his lab for hosting me. It was a great experience (1) to spend some time in Australia (my first trip) and (2) to hang out with Phill’s dedicated team of reptile (and other) fundis. Special mention must go to Sebastian Chekunow, Adam Toomes, Jacob Maher and Jasmin Broadbridge - thank you for all your kindness.

In addition to lots of time spent in the office working hard on catching up with the reptile trade work that had already been done, I was able to find some time at weekends for getting out into the field seeing some native Australian reptiles. Especially important for me was the one pygopod that we managed to see.

I was especially pleased to have the opportunity to meet Emma Sherratt and talk caecilians with her.

Before I left, I gave a talk on my own research to the department in a departmental seminar.

Measey, J. (2024) What can biological invasions teach us about rapid evolutionary change? 9 February 2024 School of Biological Sciences, The University of Adelaide

A talk at the amazing Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences.

Few venues to give a talk rival visiting the spectacular Xishuangbanna Tropical Botanical Garden (more commonly referred to as XTBG) research centre run by the Chinese Academy of Sciences. The location is within the Xishuangbanna Dai Autonomous Prefecture in southern Yunnan Province near the border with Laos. The gardens are set on an island in a meandering river, and are host to more than 4000 species of plants, including tropical forest native to the area.

I provided a summary of the MeaseyLab work on rapid adaptation in Guttural Toads and African Clawed Frogs, which went down very well with many rapid-fire questions. Afterwards, we had an amazing meal and discussion with many researchers also working on complementary themes around rapid evolution. Thanks to my hosts Kyle Tomlinson and Ahimsa Special thanks to Yiran, Niña, Thilina and Ade for all their kindness.

It is always a pleasure to visit and meet all of the enthusiastic researchers from all over south-east Asia. There is an amazing mixture of research projects including invasive plants and animals. I’m really looking forward to my next visit.

   

Measey, J. (2023) What can biological invasions teach us about rapid evolutionary change? 28 November 2023. Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences

An amazing meeting full of Xenopus people!

It was my first time to experience the International Xenopus Conference, but I left wishing that I had been to many more. The conference abstract book is available online here, and the talks were just as diverse as the people giving them. Walking around the posters, and talking to the speakers, I quickly understood that everyone shared a passion for working with Xenopus frogs (both X. laevis and X. tropicalis), at the same time as acknowledging that this was a little unusual. 

I conducted my PhD in a department where Xenopus was used as a model organism to study neural biology. Thus I was acquainted with the other world of Xenopus users. However, I was completely unaware of the more recent scope of the work that is currently being conducted with this species. It is staggering the breadth of work being done, especially the way in which Xenopus is now being used as a model for single gene mutations in children. The speed of replicating the gene mutation suffered by a newborn child in a tadpole can really help clinicians work on finding better treatments. 

The meeting was held in a Hyatt-Regency Hotel, alongside large numbers of golfers and other holiday revelers. Certainly, I'd guess that most of these folks were unaware of the large number of frog lovers meeting in the ballroom.

Many thanks go out to the conference organizers who went above and beyond to help me attend. It was a truly great experience, and I look forward to the next one!

Abstract
Home and away: the core gut microbiome of Xenopus laevis is modified by its environment

Authors: Measey, J., Ersin, M., Guille, M., Almojil, D., Araspin, L., Wagener, C., Boissinot, S., Watts, J.,
Robson, S.
Presenting Author Affiliation: Centre for Invasion Biology, Institute of Biodiversity, Yunnan University, China & Centre for Invasion Biology, Stellenbosch University, Stellenbosch, South Africa

Abstract: The vertebrate gut microbiome is a community largely composed of bacterial, fungal and viral components, whose molecular component equal that of the host. The influence of the microbiome is known to be significant both on an individual basis, and also on population scales in a wide range of host organisms. The gut microbiome is known to be involved with key attributes of animal health, including assimilation of nutrients, immuno-defensive functions and host behavior. In this study, we used bacterial 16S rRNA amplicon-based sequencing for metataxonomic classification of the gut microbiome of individuals from eight populations of Xenopus laevis. These populations were selected to represent an altitudinal gradient in of the host species (0 to 3000 m asl). From the 16S rRNA community profiles, we determine the components of the core microbiome of X. laevis, and ask whether deviations from the core are associated with the environmental context in which they live. In addition, we sampled four European invasive populations and a laboratory population from the European Xenopus Resource Centre (EXRC) in the UK, to determine what aspects of the core microbiome are retained by non-native populations. This represents the first time that the microbiome of X. laevis has been assessed across such diverse conditions,
and provides data that will help understand the role played by the environment and inform monitoring of health within this model organism.