Recent searches

No recent searches

Search options

Only available when logged in.
sigmoid.social is one of the many independent Mastodon servers you can use to participate in the fediverse.
A social space for people researching, working with, or just interested in AI!

Administered by:

Server stats:

592
active users

sigmoid.social: AboutProfiles directoryPrivacy policy

Mastodon: AboutGet the appKeyboard shortcutsView source codev4.4.3

#plasticity

2 posts2 participants1 post today
Meuthen IDEA LAB

A new @idealab publication came out today in Behavioral Ecology! Using the freshwater gastropod Physella acuta as a model system, we conducted a split-clutch experimental design that also controls for confounding aspects relating to risk allocation. We found that high background risk induces lower responsivity to both low-risk and high-risk chemical stimuli. This may be because cue addition also provided tactile cues that could be considered risky by high background risk snails. Taken together, these results provide partial evidence for risk allocation in the freshwater gastropod Physella acuta. If you're curious, here is the full Open Access paper: doi.org/10.1093/beheco/araf078

#riskallocation #ecology #evolution #plasticity #AcademicMastodon @academicchatter

Meuthen IDEA LAB

Yet another 📜 paper from the @idealab was published today in Animal Behaviour! In this preregistered ( doi.org/10.17605/OSF.IO/RS9F4 ) study ( doi.org/10.1016/j.anbehav.2025 ) , we show that previously frozen gastropod alarm cues (a standard but often untested practice in alarm cue research) induce comparable behavioral and morphological antipredator responses in a freshwater gastropod. Hence, continuing this convenient practice that also reduces donor animal use does not seem to have unintended consequences.
Find out more at sciencedirect.com/science/arti

#ecology #evolution #plasticity #AcademicMastodon @academicchatter

doi.orgOSF
Meuthen IDEA LAB

New📜paper from the @idealab - We tested the effects of environmentally relevant levels of citalopram - which is an antidepressant ubiquitous in natural water bodies - on snail behavior and morphological antipredator plasticity. We consistently found evidence for fitness-reducing effects that may have far-reaching ecological consequences.
sciencedirect.com/science/arti doi.org/10.1016/j.ecoenv.2025. #ecology #evolution #plasticity #AcademicMastodon @academicchatter

charrvein

Cool results from our bachelor student
Nina Gudrun

She analyzed tooth length variation by morphs in three icelandic lakes.

Allometric relationship - size effect on tooth lengths - varied by morphs

Her BS paper will get integrated with data on bone shape to explore plasticity and divergence in functional traits

#ecology#evolution#biodiversity
Continued thread
Giuseppe Bilotta

I'll take the opportunity to open a small parenthesis on what #rheology aka “the science of the flow”, is: the term, which can be used both for fluids and (some classes of) deformable solids describes the relationship between stress and strain in a continumm.

To wit, for something to flow (or deform), there must be a force applied. The relation between this force and how much (and how quickly) the continuum deforms is what rheology is about.

Rheology deals with two main classes of behavior: #plasticity and #viscosity.

Plastic behavior refers to (permanent) deformations whose magnitude depends on the applied force: smaller forces result in smaller deformations, larger forces in larger deformations. This is typical of solids.

Viscous behavior refers to deformations whose rate depends on the applied force: in this sense deformations can be “infinite” (the distance between two given points can grow arbitrarily), and as long as the force is applied the deformation will grow. #Viscosity determines how strongly the continuum (typically a fluid) resits to the deformation, and thus how quickly (or slowly) it deforms.

And of course you can have hybrid behaviors (viscoplastic, viscoelastic, viscoplastoelastic).

5/

TrendingLive feeds
About