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Mark D. Scherz
Herpetologist & Evolutionary Biologist, emphasis on herps of Madagascar. PhD candidate @ LMU-Munich. Co-host of
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Mark D. Scherz 5h
Replying to @kejames
Fair enough. I am a bad example, as I do not proactively manage my fitness.
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Mark D. Scherz 6h
Replying to @kejames
I just don't think of my exercise like this. My fieldwork is an endurance sport. The cardiovascular system gets worked really well when you're walking 14 h a day, even if there are no sprints involved. Body-wise (not including GI tract) fieldwork is the healthiest activity I do.
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Mark D. Scherz Aug 23
Replying to @_Alytes_
Yes!
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Mark D. Scherz Aug 23
It's ! Here's Boophis madagascariensis, a very widespread and hefty treefrog from Madagascar. Unlike most , these ones mix and match a wide array of clicks, pops and croaks when calling. Like this individual, they very often have bright white toe tips!
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Mark D. Scherz Aug 23
Here's a rare thing for your Friday: a Geckolepis with narry a scale missing! These lizards are known for losing scales and skin at the slightest touch, as you might remember:
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Mark D. Scherz Aug 22
Congratulations, Dr. McAnulty!
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Mark D. Scherz Aug 22
citation for that is here:
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Mark D. Scherz Aug 22
frogs are crazy good at convergence; just think about how many dozens of times toe pads have expanded to become climbing structures. Which reminds me: adhesive lamellae have ~11 origins in geckos alone, and also independent origins in anoles and skinks —
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Mark D. Scherz Aug 22
Replying to @JamesUVanDyke @theCFos
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Mark D. Scherz Aug 22
Replying to @JamesUVanDyke @theCFos
every. single. thing. about the system is convergent. Even the prey toxins they are sequestering. It is completely bonkers.
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Mark D. Scherz Aug 22
Replying to @JamesUVanDyke @theCFos
oh also, it occurs to me that poison dart frogs of South America and Madagascar, while not necessarily having 'organs' that you are looking for, are one of the most incredible stories of convergent evolution that I know of.
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Mark D. Scherz retweeted
Ricardo Rocha Aug 21
Call for papers for a Special Issue devoted to the “ of Bats” in the Journal of Ethnobiology (). We invite case studies, reviews & experimental studies examining bat-human relationships through an ethnobiological lens. Abstract deadline 1st of Nov 👇
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Mark D. Scherz Aug 21
Replying to @JamesUVanDyke @theCFos
Dermal rostral appendage:
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Mark D. Scherz Aug 21
Replying to @JamesUVanDyke @theCFos
Soft nose flaps have evolved in chameleons at least three, possibly five times. Bony rostral appendages two or three times. Occipital lobes (ear-like flaps) at least twice. These are all sexual, though; no more complex organs that I can think of in chameleons.
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Mark D. Scherz retweeted
James Van Dyke Aug 21
Question for biologists, and non-vertebrate researchers especially: what is an organ that has evolved multiple times in the taxa you study, and how many times do you think it has evolved? Please RT
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Mark D. Scherz Aug 21
Replying to @littlebeecowboy
Somewhere around eight years I would guess. Also: noice
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Mark D. Scherz Aug 21
I VOLUNTEER. I've never played, but I've watched hundreds of hours of play and am craving an actual chance to play.
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Mark D. Scherz Aug 21
Most of Madagascar's deforestation is from slash-and-burn agriculture. It is an island that is constantly on fire. What's left is only a tiny fragment of historic forest extents. We MUST NOT let this happen to the Amazon! This is how hotspots die! Gif src:
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Mark D. Scherz retweeted
Luke Harrold Aug 19
This was found in a cupboard in the lab by one of the technicians here. Looks to have been typed on a typewriter. Looks like a Technicians feelings of being ignored are perpetual and ever lasting 😂
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Mark D. Scherz Aug 20
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