TGIF!

Hello! If you are here from my presentation at the Texas Groundwater Invertebrate Forum, thanks for listening to my talk!

Hopefully, it was clear that there is still a lot of work to be done with the genus Hyalella, and while it seems like little progress has been made we are starting to build the foundation. Genomic resources like UCEs have a real potential to speed up progress, at least for understanding evolutionary relationships. Taxonomy on the other hand is a whole different story! But piece by piece I’m working on it!

I spent a while during my talk highlighting phylogenies and distributions, there was lots of interesting stuff here. Unfortunately, I didn’t have enough time to get into the details. But if you got here from my QR code, you can peruse these data at your leisure. Below find navigable versions of the maps I presented. There are layers for both distributions inferred based on Sanger loci and distributions based on UCE loci. NOTE: identifications are putative. 

I’ve also included some key figures from the presentation below, for your reference as well. If you have any questions or would like to chat about my results or assist in any way, feel free to shoot me an email.

“Wide-ranging” spp., identified through analysis of COI. Lots to take in here! But note strange distributions such as species 29 (Alaska to New Mexico, and the Great Lakes) and species 38. New England/Maritime Canada and Louisiana. Also of note is the presence of three broad lineages within the Intermountain west.  NOTE: identifications are putative. 

Hyalella spp. identified from Texas, and the surrounding region, based on COI. Note species 40 associated with the Pecos River, and species 46 associated with the Big Bend/Rio Grande. Also of note is the prevalence of species like H. wakulla and H. wellborni which are found throughout. NOTE: identifications are putative. 

“Wide-ranging species” identified from the analysis of UCEs. Species 31 is likely conspecific to species 29 identified in COI. NOTE: identifications are putative. 

Maximum-likelihood phylogeny reconstructed from a subset of recovered UCE loci. Several described species are highlighted. 

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The dead do tell some tales! Amphipod taxonomy revealed from sequencing of extinct population