89 new PhDs from the University of Iceland in 2025

December 1st is a ceremony for the new PhDs

5 of those were from Biology programme, spanning #Arcticcharr #genomics, #whale #bioacoustics, #speciesInteractions, #invasionbiology and #transgenerational #plasticity , all with #AquaticAnimals

Picture #UIceland

https://english.hi.is/news/almost-90-candidates-completed-phd-university

Arctic charr embryos, eyes have developed and somites are forming and extending the animal

We have done á few studies analyzing formation of morphology and related molecular processes

#salmonid #ArcticCharr #development #biology #aquaculture #embryo

Variation of tooth traits in ecologically specialized and sympatric morphs

Manuscript resubmitted To #evolutionarybiology

We examined variation in dental traits in four sympatric morphs of Arctic charr (Salvelinus alpinus) which differ in feeding specialisations, head and jaw bone morphology. We studied tooth numbers in six bones (dentary, maxilla, premaxilla, palatine, vomer and glossohyal)

Found cool things

#evolution #fish #ArcticCharr #maxilla #allometry #teeth

https://www.biorxiv.org/content/10.1101/2024.12.18.629189v2

The arctic charr genome fish, caught in august 2021

Large benthic charr from Lake Thingvallavatn

Pictured are the team, dr Zophonías Jónsson with the individual, on site.

#silentsunday #genome #ArcticCharr #Thingvallavatn #thngvellir

https://onlinelibrary.wiley.com/doi/10.1111/mec.70085

Differential gene expression during early development in recently evolved and sympatric Arctic charr morphs

old paper on the development of sympatric morphs

#arcticcharr #transcriptome #rnaseq #fish #evolution #sympatry
#peerj #biology
https://peerj.com/articles/4345/

Status of salmonid stocks in Iceland

Summary of salmon trout and charr fishing and prospects

Picture from Westfjords
Dynjandi river runninn into Arnarfjörður

#salmonid #atlanticSalmon #browntrout #ArcticCharr #Dynjandi

https://www.hafogvatn.is/is/midlun/frettir-og-tilkynningar/upptaktur-ad-veidisumrinu-2025

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 #iceland #ArcticCharr #adaptation #divergence #plasticity #thingvallavatn #ulfljotsvatn