University of Hull visit to eDNA experts

18 March 2017

Talking at the School of Environmental Sciences, University of Hull

It was great to see Dr Katharina Wollenberg Valero agian and catch up with her in her new post at the University of Hull. We teamed up with Prof Lori Lawson Handley to conduct an eDNA investigation.

I gave a talk to the joint lab meeting on our work on invasive frogs in South Africa. 

  Frogs  News  Xenopus

Far far away in a snowy backwater

02 March 2017

It's warm inside, but outside it's freezing - literally

I'm very luckky to be spending some time in the Evans Lab this March, with my first experience of a -10 C cycle ride in Canada today. We're working up the next gen sequencing data generated last year for investigating hybridisation of Xenopus laevis and Xenopus gilli

Ben visited the MeaseyLab back in June 2015, when he delivered a workshop on next gen sequencing analysis. Ben's work at McMaster University, Hamilton Ontario, has already included processing of lots of next gen datasets. Handling all the data is quite a task!

  Frogs  Xenopus

OTS monitoring at Cape Point

26 February 2017

Organisation for Tropical Studies help monitor the Cape Clawed frog

The Organisation for Tropical Studies (OTS) comes twice a year to the Cape region to conduct Faculty Field Projects (FFP). We have been using their flare and enthusiasm to help monitor the Cape Platanna, Xenopus gilli, in the Cape of Good Hope.

Seen above, setting traps can be hazardous. First you have to separate the traps from each other. Then you can get stuck in deep mud. Lastly, you have to set them into the water, which means getting your feet wet. Reminds me of last February...

This year we had a meeting with a film crew from 50:50 who used the opportunity to interview some of the students about their role in the project.

  Frogs  Xenopus

Another classic HAA meeting

27 January 2017

13th Herpetological Association of Africa conference

We had a great time at Bonamanzi Game Reserve for the 13th Herpetological Association of Africa conference.

Herpetological Association of Africa

In addition to the great photo there were lots of presentations from the MeaseyLab, including INVAXEN work and aSCR:

Estimating the global population size of a species that is hard to find: The case of Rose’s mountain toadlet
FRANCOIS BECKER, RES ALTWEGG , JOHN MEASEY, JASPER SLINGSBY & KRYSTAL A. TOLLEY

Parasite introduction to the endangered western leopard toad: Spill-over or spill-back?
NATASHA KRUGER, LOUIS H. DU PREEZ & JOHN MEASEY

Densities of Arthroleptella lightfooti across the Cape Peninsula: Preliminary results from acoustic spatial capture-recapture
MARIKE LOUW, RES ALTWEGG, ANDREW TURNER, JASPER SLINGSBY, BEN STEVENSON, DAVID BORCHERS & JOHN MEASEY

Who croaked? What the fossil frog bones say
THALASSA MATTHEWS & JOHN MEASEY

Counting chirps: Acoustic monitoring of cryptic frogs
JOHN MEASEY, BEN STEVENSON, TANYA SCOTT, RES ALTWEGG & DAVID BORCHERS

Modelling current and future distributions of three African anurans representing different functional groups: An ecophysiology modelling approach
MOHLAMATSANE M. MOKHATLA, DENNIS RÖDDER & JOHN MEASEY

Frog Olympics: Exploring the locomotory ecomorphology of the pyxicephalid radiation in southern Africa
ALEXANDER D. REBELO & JOHN MEASEY

Global realized niche divergence in the African clawed frog Xenopus laevis
DENNIS RÖDDER, FLORA IHLOW, JULIEN COURANT, JEAN SECONDI, ANTHONY HERREL, RUI REBELO, JOHN MEASEY, FRANCESCO LILLO, F. ANDRÉ DE VILLIERS, CHARLOTTE DE BUSSCHERE & THIERRY BACKELJAU

The relative tadpole vulnerability of Xenopus tadpoles to X. laevis predators
COREY J. THORP, JAMES R. VONESH & JOHN MEASEY

Frog metapopulation dynamics in the Western Cape
ANDREW A. TURNER, JOHN MEASEY & KRYSTAL A. TOLLEY

Never underestimate your opponent: Adaptive phenotypic response in a recent amphibian invader
GIOVANNI VIMERCATI, SARAH J. DAVIES & JOHN MEASEY

Impacts of climate change on the global invasion potential of the African clawed frog Xenopus laevis
FLORA IHLOW, JULIEN COURANT, JEAN SECONDI, ANTHONY HERREL, RUI REBELO, JOHN MEASEY, FRANCESCO LILLO, F. ANDRÉ DE VILLIERS, SOLVEIG VOGT, THIERRY BACKELJAU & DENNIS RÖDDER

  aSCR  Lab  meetings  Xenopus

How well do alien amphibian assessments match?

27 January 2017

How well do alien amphibian assessments match?

There are a growing number of impact classification schemes for invasive species. Here we use invasive amphibians to compare how scores match. See the paper in NeoBiota here.

How well do alien amphibian assessments match?

Classification of alien species’ impacts can aid policy making through evidence based listing and management recommendations. We highlight differences and a number of potential difficulties with two scoring tools, the Environmental Impact Classification of Alien Taxa (EICAT) and the Generic Impact Scoring System (GISS) using amphibians as a case study. Generally, GISS and EICAT assessments lead to very similar impact levels, but scores from the schemes are not equivalent. Small differences are attributable to discrepancies in the verbal descriptions for scores. Differences were found in several impact categories. While the issue of disease appears to be related to uncertainties in both schemes, hybridisation might be inflated in EICAT. We conclude that GISS scores cannot directly be translated into EICAT classifications, but they give very similar outcomes and the same literature base can be used for both schemes.

  Frogs  Lab  Xenopus