Karol Wałach

Naturalist, entomologist, tardigradologist. Currently working on Tatra Mts Orthoptera (2022-2027). Student at Jagiellonian University (Kraków, Poland).

[Sally-Ann Spence FRES FLS @SallyAnn_Spence]

Spreading the dung appreciation on the @GrasslandE excursion to Hailuoto - 2 new #DungBeetle enthusiasts from Poland, @KWalach_ & Hubert Brol
🌾🐏💩🪲❤️
#FinlandDungathon

[TETTRIs @TETTRIsEU]

Fantastic opportunity from one of our satellite projects. #SoilMATs are providing a high-level training course, in English, on soil ecology and its fauna.

Apply before December 20th.
More info in the link

https://t.co/X4eQ3DQ7A1

@nhmcrete
#NameItToSaveIt

[Alpine Environment - Eurac Research @EuracAlpine]

Exciting excursion day at #EGC2024! We explored the stunning dry grasslands of the Vinschger Sonnenberg and the alpine meadows of the Schnalstal. Swipe to see highlights from our field trip.

[Stephen Venn 🦁☀️🇮🇷 🇫🇮🇬🇧🇺🇦 @S_tiivi]

@KWalach_ presenting a study on how the orthopteran fauna of the Tatra mountains have changed since the 1950s. Not surprisingly, eurytopic species are doing well but xerothermic species are generally in decline.

[Karol Wałach @KWalach_]

@madjanev @BertB61027155 Maybe also tardigrades on liverwort microhabitats? I'm not sure whether on the picture there is one (is it wet Xanthoria?), but not too much explored too to be honest 🤔

[Alejandro López-López @atanvard]

We got a present today #tardigrades

[Karol Wałach @KWalach_]

@arnoldtortoise @madjanev @KWalachowski Unfortunately it's impossible. Only relatively few species are easily distinguishable (e.g., M. eurystomum), whereas for the majority really detailed photos and even morphometrics are required to ID (though DNA barcodes are the safest option).

[ZooKeys @ZooKeys_Journal]

This is Hotwheels sisyphus, a new species and genus of #spider we recently published https://t.co/757X99HtRI

Thanks to this carefully curated GIF, you can probably figure out why it was called that.

[Karol Wałach @KWalach_]

@madjanev @BertB61027155 I don't honestly know, need to check the latest paper to verify it

[Karol Wałach @KWalach_]

@madjanev @BertB61027155 Great footage!

[Karol Wałach @KWalach_]

@arnoldtortoise @madjanev @BertB61027155 @ryeharbour_NR It's a Macrobiotus - its buccal tube for a bit squeezed when preparing the slide. That's why it looks so odd

[Karol Wałach @KWalach_]

@arnoldtortoise @madjanev It's a Ramazzottius sp., most possibly from the oberhaeuseri group :)

[Karol Wałach @KWalach_]

@madjanev @arnoldtortoise @BertB61027155 Wow, very interesting infection! First time seeing such one too. But yes, it's Ramazzottius cf. oberhaeuseri

[Karol Wałach @KWalach_]

@BertB61027155 @madjanev [2-3]-[3-2] in last stage*

[Karol Wałach @KWalach_]

@madjanev @BertB61027155 I'm not an expert with macrobiotids, but I think that these mushroom-like processes indicate the hufelandi group

[Karol Wałach @KWalach_]

@madjanev @BertB61027155 The density of infestation on that Macrobiotus! Fantastic!

[Karol Wałach @KWalach_]

@BertB61027155 @madjanev Hmm, interesting. No, I haven't got such a specimen before

[Karol Wałach @KWalach_]

@BertB61027155 @madjanev Are you sure that it is the connective tissue that makes the macroplacoids visible as 1? Hoyer's medium dissolves these kinds of tissues and highlights the sclerotized parts, which in this case seem to be fused

[Polish Evolutionary Conference @PolishEvoConf]

"Where do thee come from? – Time-calibrated phylogeography of the Nearctic Milnesium (Tardigrada)" - exciting work presented by Karol Wałach

#PEC2023 #PolishEvolutionaryConference