The 2nd Asellus symposium was held online

2 minute read

On November 26th 2021, the 2nd Asellus Symposium was held online. There were some 40+ registered participants from institutions in 14 countries. Below you can find the final program, links to all recorded talks on youtube (unlisted) and a sumary of the discussion notes.

It was great to see the broad range of topics that were covered in presentations and during the discussion sessions (see synthesis of insight below) - from selective forces and determinants of pigmentation, intraspecific variation in innovativeness and behavioural responses to predator cues, foraging ecology and life-history variation, and species interactions (host-parasite, host-microbiome, predator-prey) to phylogeography and microevolution, along the surface-waterpipe-cave continuum, as well as natural and human-impacted environments.

The broad range of methods that are already being used - different phenotyping methods (microscopy, computer vision techniques for image and video analyses e.g., microbiomics and metabolomics), genomics (several draft genomes have been attempted/are in preparation), lab rearing and maintenance, and long-term data acquisition - that can be shared across the community set the stage for highly integrative studies.

This clearly shows that Asellus aquaticus is ready to fledge as a model system for eco-evo-devo studies both for basic and applied questions. At the same time, several knowledge gaps were identified and for a very short non-exhaustive summary, these include poor understanding of basic requirements of A. aquaticus (e.g. in lab rearing), lack of a well-annotated genome, and limited knowledge on sexual selection and phenology.


Symposium program:

Scientific synopsis and notes (updated 2022-02-02):

Recorded talks

Keynote (40 mins)

Regular talk (12 mins)

Flash talk (3 mins)

Keynote presentation

Meredith Protas

The genetic basis of pigmentation differences in multiple populations of Asellus aquaticus

Session 1

Lidia Sworobowicz

Phylogeography of Asellus aquaticus in Europe

Tristan Lefebure

The Asellidae ecological genomic model

Session 2

Vid Bakovic & Dominic Wright

Asellus aquaticus cave and lake ecotypes on the island of Gotland, Sweden

Anna Biro

Morphological comparison of surface vs cave Asellus aquaticus populations

Žiga Fišer

Comparative phenology of cave and surface populations of Asellus aquaticus

Moritz Lürig

Phenotypic variation of Asellus hilgendorfi on Hokkaido (Japan)

Session 3

Emmanuelle Prest

Asellus aquaticus in drinking water distribution systems

Gábor Herczeg

Food preference and food type innovation in surface- vs. cave-dwelling Asellus aquaticus

Sára Sztruhala

Population divergence in aggregation and sheltering behaviour in surface and cave-adapted Asellus aquaticus

Claudia Tugui

Towards understanding the co-occurrence of Asellus aquaticus and Aeromonas in Dutch drinking water distribution systems

Session 4

Simona Kralj-Fišer

Behavioural variation at different hierarchical levels during adaptation from fluctuating to stable environments

Hajriz Berisha

Behavioural/Increased movement activity of Asellus aquaticus in a food abundant, predator-free cave habitat

Gergely Horváth

Divergence in exploratory behaviour between surface and cave-adapted Asellus aquaticus

Session 5

Elvira Lafuente

Coping with anthropogenic stress:the role of gut-associated bacteria in Asellus aquaticus

Grega Benko

Acanthocephalan-induced phenotypic alterations of Asellus aquaticus

Térezia Horváthová

Gut microbiome of freshwater isopods: a new source of antimicrobial compounds?

Christoph Vorburger

Potential reproductive manipulators in Asellus aquaticus