Where do the charr go, when climate change hits their rivers?
Writing a small grant for a summer project
2 students 1 M icelandic crowns for each
(Pititful salay if you ask me)
Anadromous charr spawn in rivers, but we mainly find the fry in side streams
Want to map that more carefully,
Find most preferred streams
Midhusaskogur
Spring feed pond at the edge of an old lava field
Spring comes from stream under the lava
Pond is home to specialized small form of #ArcticCharr
Thia form has evolved multiple times in Iceland, in different ponds like this
#silentsunday #ponds #ecology #biodiversity
New grant in house
Shaping the organism: Genetic and environmental influence on development during rapid evolution
Positive selection acts on genetic variation, which in context of the environment an organism develops and functions in, leads to adaptive changes in specific traits
#evolution #geometricMorphometrics #ArcticCharr #genetics #Iceland #thingvallavatn #craniofacial
https://en.rannis.is/news/allocation-from-the-icelandic-research-fund-for-the-financial-year-2025
#silentsunday
Salmon river Elliðaá in middle of Reykjavík
December 2024
#BrownTrout #ArcticCharr also found in system
#river #salmon #winter #Reykjavik #Elliðaa
I eat snails and have subterminal mouth
#ArcticCharr #iceland #Thingvallavatn #Úlfljótsvatn #benthic #head
N field pics
@charrvein Meet Camille Leblanc! She is a professor at Hólar University in the beautiful countryside of Skagafjörður, northern Iceland. She has been working with Arctic charr for over 10 years and has mentored many students in her young career!
#fish #biology #iceland #ArcticCharr #evolution #ecology #IceFishResearch #WomenSTEM
https://www.icefishresearch.com/2024/06/04/scientist-spotlight-camille-leblanc/
Exploring the spawning sites and juvenile habitats of #Anadromous charr in Miðá river
Both #atlanticSalmon and #ArcticCharr are found í #Miðá
Where do the charr reside, in side streams or in slower moving water by banks?
#Snæfellsnes #Iceland #salmonid
Guðbjörg will also study their head n jaw morphology
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0300359
Electrofishing for charr, salmon, sticklebacks
My first and newst phd students
Diversity in the internal functional feeding elements of sympatric morphs of Arctic charr (Salvelinus alpinus)
Guðbjörg Ósk Jónsdóttir, Laura-Marie von Elm, Finnur Ingimarsson, Samuel Tersigni, Sigurður Sveinn Snorrason, Arnar Pálsson, Sarah Elizabeth Steele
#evolution #divergence #feedingElements #fish #salmonidae #arcticCharr
#PlosOne
Out now
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0300359
Catching large benthic charr in #Thingvallavatn
Preprint of nearly published paper by Guðbjörg Jónsdóttir
#evolution #morphs #ArcticCharr #boneShape
https://www.biorxiv.org/content/10.1101/2023.02.17.528955v2
Lake Meðalfellsvatn 3 weeks ago
Home to #ArcticCharr #BrownTrout
Crested between mount #Esja n #Meðalfell
#silentsunday
Our students presenting at
Icelandic ecological society meeting
Andreas Guðmundsson n co
Ants in geothermal areas
Kenedy Williams- adaptive evolution in charr
Guðbjörg Jónsdóttir- teeth trait diversity in sympatry
Diversity in the internal functional feeding elements of sympatric morphs of Arctic charr (Salvelinus alpinus).
PONE-D-23-30771R1
Dear Dr. Jónsdóttir,
We’re pleased to inform you that your manuscript has been judged scientifically suitable for publication and will be formally accepted for publication once it meets all outstanding technical requirements.
The Science and Research Fund of South Iceland (Vísinda- og rannsóknarsjóður Suðurlands), awards grants intended for students working on a research project for final degrees at the tertiary level.
Guðbjörg Ósk Jónsdóttir got a Grant
Here w #presidentIceland n Sveinn Aðalsteinsson
#plasticity #arcticCharr #Úlfljótsvatn #Thingvallavatn #þingvallavatn #evolution
https://hfsu.is/en/the-science-and-research-fund-of-south-iceland/
Guðbjörg Osk Jónsdóttir got a 3 year phd Grant from icelandic research fund #rannis #irf
#Grant #Iceland #evolution #divergence
She gets to study more bone shape evolution in #arcticCharr
Sans
https://www.biorxiv.org/content/10.1101/2023.02.17.528955v2
Sadly our project Grant got Hammered
So, it will be all phenotyping No genotyping
Diversity in the internal functional feeding elements of sympatric morphs of Arctic charr (Salvelinus alpinus)
Guðbjörg Ósk Jónsdóttir et al
Minor revision at #PlosOne
#biorxiv #evolution #fish #ArcticCharr #speciation #morphology #morphometrics #dentary #jaws
First paper from large plasticity experiment
4 derived morphs of charr from 2 lakes
1 putative ancestor - anadromous charr from Fljótaá
As a side project we also studied behavior
That was published first
Variation in personality shaped by evolutionary history, genotype and developmental plasticity in response to feeding modalities in the Arctic charr
#behavior #plasticity #divergence #personality #ArcticCharr #openfieldtest
Marion Dellinger
Sarah E. Steele
Et al
Variation in personality shaped by evolutionary history, genotype and developmental plasticity in response to feeding modalities in the Arctic charr
#ProcB
#behavior #plasticity #divergence #personality #ArcticCharr #openfieldtest
Marion Dellinger
Sarah E. Steele
Evert Sprockel
Joris Philip
Arnar Pálsson
David Benhaïm
13 December 2023
https://doi.org/10.1098/rspb.2023.2302
