Jen Y. Lamb, PhD Profile picture
Apr 20, 2019 14 tweets 11 min read Read on X
#Minnesota #herp #fieldwork thread:

Spent yesterday afternoon with an undergrad researcher (Alex) hoping to find breeding blue-spotted #salamanders

Here's one of the ponds where we've got traps out. 🤞🤞🤞
Didn't see any sally activity, but other #amphibians were active! Image
The three ponds we are trapping for #salamanders had *deafening* choruses of boreal chorus frogs (Pseudacris maculata).

Here's male chorus #frog . You can't see it in the pic, but the skin of their throats turns yellow when they've been calling. Image
Alex's first wood #frog catch of the season!

Wood frog males were calling while supported by submerged, dead grasses in another pond we checked for #salamanders . Image
This other pond had so much vegetation that it could be tough to spot calling #frogs at times (plus they duck under the surface when you get close).

Here's a #WheresWaldo for #amphibians pic - find the resting male wood frog! Image
Alex & I both saw our first wood #frog egg masses yesterday! He spotted this group of eggs. They aren't too far along in development (I need to review dev timing papers to figure out approx age), and we didn't see eggs in other ponds where we heard choruses of frogs. Image
A close up of one clutch of wood #frog eggs (taken underwater). Image
We're headed out later today to check the traps we set in what we hope 🤞 are blue-spotted #salamander ponds.

Some studies indicate glow sticks improve trapping efficacy for mole salamanders, so we're giving that a try. Image
This is our first project targeting blue-spotted #salamanders , and my first #spring in the midwest, so there is going to be a #fieldwork learning curve.

But this is a pretty neat spot to learn 🙃

🤞 Image
Happy #SalamanderSaturday #fieldwork success! Found a female blue-spotted #salamander in our traps at one pond. ImageImage
Along with eggs that I think are blue-spotted #salamander eggs (from a 2nd pond).

This single egg was spotted by Alex (might have to nickname him eagle eyes), and we found about 4 others also laid among the submerged grasses. Image
Just in time for Easter, we also spotted new wood frog eggs and what I believe were boreal chorus #frog egg masses. Image
I think this is another chorus #frog egg mass, but it was larger and had more eggs than the others we saw. Though didn't seem large enough or spherical enough to be a wood frog egg mass. Image
This is my first spring working with these species of #amphibians , so I'd be happy to hear from folks with more experience (@BenardMF @FieldEcology @amphibs @RD_Denton - thoughts?)
And a better close up of one of the singly-laid eggs (which I'm thinking are blue-spotted #salamander eggs) Image

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More from @jenylamb

Sep 24, 2020
This is my first time teaching our new #online topics in #biology course for #masters students. Our focal theme this semester: #UrbanEcology & #urban #evolution.

1/4
We are on our 4th seminar & paper discussion (fascilitated by @perusall !) and some of the side-convos coming up are excellent! Like...

🏙️#CitizenScience: how to standardize, do it ethically, and communicate with the public?
(Prompted by nature.com/articles/s4200…)

2/4
🏙️#Sex biases in the individuals studied in the lab & field. Why is it more often males of a species? What data are we missing because of that bias? 🤔
(Prompted by: onlinelibrary.wiley.com/doi/abs/10.111…)

3/4
Read 4 tweets
Jun 1, 2020
#BlackBirderWeek Day 2 is full of folks doing great #scicom & communication about what the #BlackInNature experience means.

Just a few highlights below!
#TIL during #BlackBirderWeek

1) Paleohistology is a really cool field! Check out @Yara_Haridy 's blog & short clip introducing #fossil remnants of #cells ()
Read 4 tweets
Mar 15, 2020
Looking for an indoor #ecology game? Try this card game! Would be good for #STEMeducation at several levels Image
I played the single player game and went with these two #biomes first

#marine
Temperate #forest Image
Here’s the #marine biome I finished with Image
Read 4 tweets
Feb 14, 2020
A thread on #ImageAnalysis & #color in animals:

#AcademicTwitter ,#Herpetology , & folks that analyze #color from images:

Any recommendations for ways to collect data about color & pattern from images of #wildlife? We want to quantify things like %cover by a color & intensity.
Have enjoyed reading some of the work by Davis & Grayson on quantifying #color, hue, % coverage in #newts and other animals.

They used Fovea Pro, a Photoshop add in. The newer version (QIA-64) costs ~$800 😬

researchgate.net/publication/26…
Am also considering the methods of Paterson & Blouin-Demers where they quantify continuous variation in throat color in #lizards using Adobe & ultimately analysis in #imageJ (but haven't had time to test it out yet)

researchgate.net/publication/31…
Read 4 tweets
Dec 13, 2019
It’s the time of year where I grade #HerpFall2019 field notebooks! Always fun to see how they remember things and express themselves.

Favorites below in thread
#herpetology #fieldwork
Some #HerpFall2019 students thought belastomatid #insects were “nightmare fuel” 😂

We caught a few of these aquatic predators in our minnow traps. They’ll absolutely eat #amphibians ImageImage
Whereas the #hognose #snake was a hit Image
Read 8 tweets
Jul 19, 2019
#Fieldwork yesterday & today yielded several highlights:

A dozen blue spotted #salamander #larvae , plus one dead in a trap (with a massive belastomatid insect [aka "toe biter"]).

These larvae are part of a student's project, which he'll be presenting @MWPARC this August! Image
Plus metamorphosing or recently metamorphosed #amphibians of a few different species! (It's that time of the year in central #Minnesota )

In some spots the ground was littered with tiny wood #frog (Lithobates sylvaticus) metamorphs. You can see this one's remaining tail nubbin. ImageImage
And right as I was reminding us to "keep an eye out for metamorphosing #toads" I came across this American toadlet (Anaxyrus americanus) Image
Read 5 tweets

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