Anna Hewett
@annamhew.bsky.social
Post-doc at UNIL | Inbreeding depression, quant gen and statistical genetics in wild populations 🦉🦌 | Happiest when gallivanting outside 🏊♀️🚴♀️🏃♀️🏔 | She / her
Pinned
Anna Hewett
@annamhew.bsky.social
· Aug 25
Growth effects and the underlying genetic architecture of inbreeding depression in a wild raptor https://www.biorxiv.org/content/10.1101/2025.08.17.670740v1
Pre-print now out on bioRxiv! If you saw my talk at #eseb and want more info, here it is:
Reposted by Anna Hewett
🚨 New paper 🚨
(1/8) In meerkats, pregnancy isn’t one-size-fits-all. Some mothers gain weight steadily, others delay all growth until the final weeks 📈
What drives this striking variation, and how does it affect the (adorable) pups?
OA PAPER: doi.org/10.1111/1365...
Details (+cute pics!) below👇
(1/8) In meerkats, pregnancy isn’t one-size-fits-all. Some mothers gain weight steadily, others delay all growth until the final weeks 📈
What drives this striking variation, and how does it affect the (adorable) pups?
OA PAPER: doi.org/10.1111/1365...
Details (+cute pics!) below👇
February 5, 2026 at 12:57 PM
🚨 New paper 🚨
(1/8) In meerkats, pregnancy isn’t one-size-fits-all. Some mothers gain weight steadily, others delay all growth until the final weeks 📈
What drives this striking variation, and how does it affect the (adorable) pups?
OA PAPER: doi.org/10.1111/1365...
Details (+cute pics!) below👇
(1/8) In meerkats, pregnancy isn’t one-size-fits-all. Some mothers gain weight steadily, others delay all growth until the final weeks 📈
What drives this striking variation, and how does it affect the (adorable) pups?
OA PAPER: doi.org/10.1111/1365...
Details (+cute pics!) below👇
Reposted by Anna Hewett
dplyr 1.2.0 is out now and we are SO excited!
- `filter_out()` for dropping rows
- `recode_values()`, `replace_values()`, and `replace_when()` that join `case_when()` as a complete family of recoding/replacing tools
These are huge quality of life wins for #rstats!
tidyverse.org/blog/2026/02...
- `filter_out()` for dropping rows
- `recode_values()`, `replace_values()`, and `replace_when()` that join `case_when()` as a complete family of recoding/replacing tools
These are huge quality of life wins for #rstats!
tidyverse.org/blog/2026/02...
dplyr 1.2.0
dplyr 1.2.0 fills in some important gaps in dplyr's API: we've added a new complement to `filter()` focused on dropping rows, and we've expanded the `case_when()` family with three new recoding and re...
tidyverse.org
February 4, 2026 at 11:39 AM
dplyr 1.2.0 is out now and we are SO excited!
- `filter_out()` for dropping rows
- `recode_values()`, `replace_values()`, and `replace_when()` that join `case_when()` as a complete family of recoding/replacing tools
These are huge quality of life wins for #rstats!
tidyverse.org/blog/2026/02...
- `filter_out()` for dropping rows
- `recode_values()`, `replace_values()`, and `replace_when()` that join `case_when()` as a complete family of recoding/replacing tools
These are huge quality of life wins for #rstats!
tidyverse.org/blog/2026/02...
Reposted by Anna Hewett
🚨 PhD offer (please share)
Fascinated by bird migration and movement ecology? 🦜🌍 Join us at @vogelwarte.bsky.social to study annual cycle energetics with multi-sensor loggers in multiple species
Deadline: 20 Feb 2026
Starting: June 2026
Supervision: Martins Briedis & me
Info: tinyurl.com/2dbv9nzh
Fascinated by bird migration and movement ecology? 🦜🌍 Join us at @vogelwarte.bsky.social to study annual cycle energetics with multi-sensor loggers in multiple species
Deadline: 20 Feb 2026
Starting: June 2026
Supervision: Martins Briedis & me
Info: tinyurl.com/2dbv9nzh
January 15, 2026 at 1:31 PM
🚨 PhD offer (please share)
Fascinated by bird migration and movement ecology? 🦜🌍 Join us at @vogelwarte.bsky.social to study annual cycle energetics with multi-sensor loggers in multiple species
Deadline: 20 Feb 2026
Starting: June 2026
Supervision: Martins Briedis & me
Info: tinyurl.com/2dbv9nzh
Fascinated by bird migration and movement ecology? 🦜🌍 Join us at @vogelwarte.bsky.social to study annual cycle energetics with multi-sensor loggers in multiple species
Deadline: 20 Feb 2026
Starting: June 2026
Supervision: Martins Briedis & me
Info: tinyurl.com/2dbv9nzh
Reposted by Anna Hewett
Interested in how life history may shape the gut microbiome of a wild mammal? Keen on getting to work with an iconic long-term study system in Scotland?
Check out this PhD opportunity with me, Josephine Pemberton and @gfalbery.bsky.social
Reach out to chat more!
www.findaphd.com/phds/project...
Check out this PhD opportunity with me, Josephine Pemberton and @gfalbery.bsky.social
Reach out to chat more!
www.findaphd.com/phds/project...
November 24, 2025 at 4:40 PM
Interested in how life history may shape the gut microbiome of a wild mammal? Keen on getting to work with an iconic long-term study system in Scotland?
Check out this PhD opportunity with me, Josephine Pemberton and @gfalbery.bsky.social
Reach out to chat more!
www.findaphd.com/phds/project...
Check out this PhD opportunity with me, Josephine Pemberton and @gfalbery.bsky.social
Reach out to chat more!
www.findaphd.com/phds/project...
An amazing online resource 🙏 I'll be following along!
I'm teaching Statistical Rethinking again starting Jan 2026. This time with live lectures, divided into Beginner and Experienced sections. Will be a lot more work for me, but I hope much better for students.
I will record lectures & all will be found at this link: github.com/rmcelreath/s...
I will record lectures & all will be found at this link: github.com/rmcelreath/s...
January 5, 2026 at 10:12 AM
An amazing online resource 🙏 I'll be following along!
Reposted by Anna Hewett
Just over a month left to apply for scholarships on this project. We will run internal pre-selection interviews end of November, so if you consider applying, please reach out now. I can guarantee amazing scientific and intellectual environment at the Institute for Eco Evo @edinburghup.bsky.social
If you like genomics, speciation, and primates, this PhD position is for you! Unraveling the genomic architecture of speciation and gene flow in guenons, a diverse group of African monkeys. Funding through DTP. Do reach out with questions! #genomics #genome_assembly
evol.mcmaster.ca/brian/evoldi...
evol.mcmaster.ca/brian/evoldi...
November 5, 2025 at 10:01 AM
Just over a month left to apply for scholarships on this project. We will run internal pre-selection interviews end of November, so if you consider applying, please reach out now. I can guarantee amazing scientific and intellectual environment at the Institute for Eco Evo @edinburghup.bsky.social
Reposted by Anna Hewett
🚨Fully-funded PhD opportunity in my group🚨
🧬How does parental ageing shape the next generation?🐾
Find out by studying meerkats!
🧪Epigenetic clocks
✨Bioinformatics
📊Long-term data
🌍Kalahari fieldwork
💡Big evolutionary questions
Get in touch or APPLY NOW
Please share!
www.uea.ac.uk/course/phd-d...
🧬How does parental ageing shape the next generation?🐾
Find out by studying meerkats!
🧪Epigenetic clocks
✨Bioinformatics
📊Long-term data
🌍Kalahari fieldwork
💡Big evolutionary questions
Get in touch or APPLY NOW
Please share!
www.uea.ac.uk/course/phd-d...
October 17, 2025 at 9:12 AM
🚨Fully-funded PhD opportunity in my group🚨
🧬How does parental ageing shape the next generation?🐾
Find out by studying meerkats!
🧪Epigenetic clocks
✨Bioinformatics
📊Long-term data
🌍Kalahari fieldwork
💡Big evolutionary questions
Get in touch or APPLY NOW
Please share!
www.uea.ac.uk/course/phd-d...
🧬How does parental ageing shape the next generation?🐾
Find out by studying meerkats!
🧪Epigenetic clocks
✨Bioinformatics
📊Long-term data
🌍Kalahari fieldwork
💡Big evolutionary questions
Get in touch or APPLY NOW
Please share!
www.uea.ac.uk/course/phd-d...
Exciting new pre-print from the group! Why and how are our owls getting redder over time? 🦉
Check it out on BioRxiv 👇👇
Check it out on BioRxiv 👇👇
Genomic bases of short-term evolution in the wild revealed by long-term monitoring and population-scale sequencing https://www.biorxiv.org/content/10.1101/2025.10.01.679793v1
October 7, 2025 at 2:06 PM
Exciting new pre-print from the group! Why and how are our owls getting redder over time? 🦉
Check it out on BioRxiv 👇👇
Check it out on BioRxiv 👇👇
A couple of really cool conferences happening next summer on my birthday 🥲
I know many people have a conference birthday but I just can't bring myself to do it ... me and my partner usually go on holiday and yes I'm turning 30 next year 😬
I know many people have a conference birthday but I just can't bring myself to do it ... me and my partner usually go on holiday and yes I'm turning 30 next year 😬
October 2, 2025 at 1:52 PM
A couple of really cool conferences happening next summer on my birthday 🥲
I know many people have a conference birthday but I just can't bring myself to do it ... me and my partner usually go on holiday and yes I'm turning 30 next year 😬
I know many people have a conference birthday but I just can't bring myself to do it ... me and my partner usually go on holiday and yes I'm turning 30 next year 😬
Reposted by Anna Hewett
Our latest #SORTEE-led paper is out now in #ProcB!
We reviewed data/code-sharing policy clarity, strictness & timing across 275 EcoEvo journals
We also worked with #ProcB & #EcologyLetters to assess initial compliance with sharing mandates. Huge team effort! 👉 doi.org/10.1098/rspb...
We reviewed data/code-sharing policy clarity, strictness & timing across 275 EcoEvo journals
We also worked with #ProcB & #EcologyLetters to assess initial compliance with sharing mandates. Huge team effort! 👉 doi.org/10.1098/rspb...
From policy to practice: progress towards data- and code-sharing in ecology and evolution | Proceedings of the Royal Society B: Biological Sciences
Data and code are essential for ensuring the credibility of scientific results and facilitating reproducibility, areas in which journal sharing policies play a crucial role. However, in ecology and evolution, we still do not know how widespread data- and ...
doi.org
September 18, 2025 at 8:22 AM
Our latest #SORTEE-led paper is out now in #ProcB!
We reviewed data/code-sharing policy clarity, strictness & timing across 275 EcoEvo journals
We also worked with #ProcB & #EcologyLetters to assess initial compliance with sharing mandates. Huge team effort! 👉 doi.org/10.1098/rspb...
We reviewed data/code-sharing policy clarity, strictness & timing across 275 EcoEvo journals
We also worked with #ProcB & #EcologyLetters to assess initial compliance with sharing mandates. Huge team effort! 👉 doi.org/10.1098/rspb...
Reposted by Anna Hewett
Reposted by Anna Hewett
Genomic imputation can boost dataset quality and benefit research on wild populations. In hihi, we found high #imputation accuracies despite a small reference panel of high-fecundity individuals. Imputation improves downstream #ConservationGenomics analyses. onlinelibrary.wiley.com/doi/10.1111/...
High Imputation Accuracy Can Be Achieved Using a Small Reference Panel in a Natural Population With Low Genetic Diversity
Genotype imputation, the inference of missing genotypes using a reference set of population haplotypes, is a cost-effective tool for improving the quality and quantity of genetic datasets. Imputation...
onlinelibrary.wiley.com
September 3, 2025 at 3:45 AM
Genomic imputation can boost dataset quality and benefit research on wild populations. In hihi, we found high #imputation accuracies despite a small reference panel of high-fecundity individuals. Imputation improves downstream #ConservationGenomics analyses. onlinelibrary.wiley.com/doi/10.1111/...
Reposted by Anna Hewett
Growth effects and the underlying genetic architecture of inbreeding depression in a wild raptor https://www.biorxiv.org/content/10.1101/2025.08.17.670740v1
August 22, 2025 at 1:32 PM
Growth effects and the underlying genetic architecture of inbreeding depression in a wild raptor https://www.biorxiv.org/content/10.1101/2025.08.17.670740v1
Pre-print now out on bioRxiv! If you saw my talk at #eseb and want more info, here it is:
Growth effects and the underlying genetic architecture of inbreeding depression in a wild raptor https://www.biorxiv.org/content/10.1101/2025.08.17.670740v1
August 25, 2025 at 7:42 AM
Pre-print now out on bioRxiv! If you saw my talk at #eseb and want more info, here it is:
Reposted by Anna Hewett
With #eseb2025 coming to a close, it is time to start making plans for 2026. Interested in the interface of evolution 🧬 and ecology 🌳? Come to our #ExE conference hosted by @uniexecec.bsky.social in beautiful #Cornwall. Leave your email address at tinyurl.com/EvolxEcol to join our mailing list!
August 22, 2025 at 1:32 PM
With #eseb2025 coming to a close, it is time to start making plans for 2026. Interested in the interface of evolution 🧬 and ecology 🌳? Come to our #ExE conference hosted by @uniexecec.bsky.social in beautiful #Cornwall. Leave your email address at tinyurl.com/EvolxEcol to join our mailing list!
I'll be presenting at #ESEB25 tomorrow! Pop along to room 114 @3:30 if you want to hear about inbreeding depression, hierarchical models and barn owls of course 🦉
S42.02 - looks like it's going to be a great session! 😊
S42.02 - looks like it's going to be a great session! 😊
August 20, 2025 at 4:30 PM
I'll be presenting at #ESEB25 tomorrow! Pop along to room 114 @3:30 if you want to hear about inbreeding depression, hierarchical models and barn owls of course 🦉
S42.02 - looks like it's going to be a great session! 😊
S42.02 - looks like it's going to be a great session! 😊
Reposted by Anna Hewett
George RR Martin is an author on the dire wolf paper. Presumably to make sure there’s plenty of incest, cos these wolves will have no one else to fuck except each other.
April 12, 2025 at 7:35 AM
George RR Martin is an author on the dire wolf paper. Presumably to make sure there’s plenty of incest, cos these wolves will have no one else to fuck except each other.
Reposted by Anna Hewett
Wow. This is sooo good. Echoing @urbanevol.bsky.social this user’s manual for Ne should be required reading for popgen and conservation genetics folks. onlinelibrary.wiley.com/doi/10.1111/...
The Idiot's Guide to Effective Population Size
This is a reference manual for the elegant, yet hideously complex concept of effective population size (Ne), inspired by a classic, self-published manual of automotive repair ‘for the compleat idiot’...
onlinelibrary.wiley.com
February 17, 2025 at 6:26 PM
Wow. This is sooo good. Echoing @urbanevol.bsky.social this user’s manual for Ne should be required reading for popgen and conservation genetics folks. onlinelibrary.wiley.com/doi/10.1111/...
Reposted by Anna Hewett
1/7 Very happy to share our latest paper on the joint evolution of separate sexes and sexual dimorphism in @jevbio.bsky.social, led by @thomaslesaffre.bsky.social and in collaboration with John Pannell at @dee-unil.bsky.social
🔗 doi.org/10.1093/jeb/voae136
🔗 doi.org/10.1093/jeb/voae136
The joint evolution of separate sexes and sexual dimorphism
Abstract. Dioecious plants are frequently sexually dimorphic. Such dimorphism, which reflects responses to selection acting in opposite directions for male
doi.org
January 22, 2025 at 1:37 PM
1/7 Very happy to share our latest paper on the joint evolution of separate sexes and sexual dimorphism in @jevbio.bsky.social, led by @thomaslesaffre.bsky.social and in collaboration with John Pannell at @dee-unil.bsky.social
🔗 doi.org/10.1093/jeb/voae136
🔗 doi.org/10.1093/jeb/voae136
Reposted by Anna Hewett
1/7 Sexual antagonism arises when males and females face different selection pressures for a trait influenced by shared genes. This is thought to drive balancing selection and maintain genetic polymorphism. We challenge this view in our recent paper :
🔗 doi.org/10.1093/evlett/qrae059
🔗 doi.org/10.1093/evlett/qrae059
The maintenance of genetic polymorphism underlying sexually antagonistic traits
Abstract. Selection often favors different trait values in males and females, leading to genetic conflicts between the sexes when traits have a shared gene
doi.org
January 24, 2025 at 2:52 PM
1/7 Sexual antagonism arises when males and females face different selection pressures for a trait influenced by shared genes. This is thought to drive balancing selection and maintain genetic polymorphism. We challenge this view in our recent paper :
🔗 doi.org/10.1093/evlett/qrae059
🔗 doi.org/10.1093/evlett/qrae059
Reposted by Anna Hewett
Inbreeding depression is more severe in harsher environmental conditions, as shown in a wild population
doi.org/10.1093/evle...
Now in @evolletters.bsky.social by @annamhew.bsky.social et al.
📷: Anna Hewett
doi.org/10.1093/evle...
Now in @evolletters.bsky.social by @annamhew.bsky.social et al.
📷: Anna Hewett
January 24, 2025 at 5:56 PM
Inbreeding depression is more severe in harsher environmental conditions, as shown in a wild population
doi.org/10.1093/evle...
Now in @evolletters.bsky.social by @annamhew.bsky.social et al.
📷: Anna Hewett
doi.org/10.1093/evle...
Now in @evolletters.bsky.social by @annamhew.bsky.social et al.
📷: Anna Hewett
📣 The final chapter of my PhD is now out in @evolletters.bsky.social !! 📣
🦌 Using genomic and fitness data from a long-term study of red deer we investigated the interaction between inbreeding depression and the environment (ID × E)
doi.org/10.1093/evle...
🦌 Using genomic and fitness data from a long-term study of red deer we investigated the interaction between inbreeding depression and the environment (ID × E)
doi.org/10.1093/evle...
Fine-scale spatial variation in fitness, inbreeding, and inbreeding depression in a wild ungulate
Abstract. Environmental stress can exacerbate inbreeding depression by amplifying differences between inbred and outbred individuals. In wild populations,
doi.org
January 13, 2025 at 1:15 PM
📣 The final chapter of my PhD is now out in @evolletters.bsky.social !! 📣
🦌 Using genomic and fitness data from a long-term study of red deer we investigated the interaction between inbreeding depression and the environment (ID × E)
doi.org/10.1093/evle...
🦌 Using genomic and fitness data from a long-term study of red deer we investigated the interaction between inbreeding depression and the environment (ID × E)
doi.org/10.1093/evle...