Sign in

Gerardo Fracasso

@gfracasso.bsky.social
73 followers 125 following 27 posts

Evolutionary Biologist mainly interested in host-(ecto)parasite interactions, ecology and behaviour. Marie Curie postdoctoral fellow (UKRI Funding Guarantee) working on HosTiLyme project...of birds, ticks and their microbiome!

PostsRepliesMedia
Gerardo Fracasso @gfracasso.bsky.social · 01/10/2026
Here we are celebrating another Darwin Landing Day in the very same town Darwin ended his voyage (Falmouth, Cornwall). This year at @uniexecec.bsky.social we have @annaliisalaine.bsky.social showing us the convolution of within-host pathogen communities!
110
Reposted by Gerardo Fracasso
Jolyon Troscianko @jtroscianko.bsky.social · 30/09/2026
🦋 Butterfly wing patterns create motion illusions that protect them from predators! Our new study (8 years in the making) is out in Nature today doi.org/10.1038/s415... @grahancock.bsky.social @esbriolat.bsky.social @scienceanna.bsky.social @lauraakelley.bsky.social @uniexecec.bsky.social
12261129
Reposted by Gerardo Fracasso
Mark A. Hanson @hansonmark.bsky.social · 14/08/2026
HIRING MICROBIOLOGIST: effective start asap! The PDRA/PDRF (per xp) will investigate the interactions of bumblebee antimicrobial peptides (AMPs) with the gut microbiota & more. Our work has shown AMPs have striking specificity for ecological microbes. careers.exeter.ac.uk/vacancies/13... 1/2
careers.exeter.ac.uk
Postdoctoral Researcher Associate or Fellow in Cornwall | University of Exeter
View details and apply for this Postdoctoral Researcher Associate or Fellow vacancy in Cornwall. Postdoctoral Research Associate / Fellow This job is part of an Advanced Research + Inventio...
24360
Gerardo Fracasso @gfracasso.bsky.social · 12/08/2026
If you are working with (ecto)parasites take a moment to skim through this opinion article: rdcu.be/fzjv2. The title is self-explanatory of the content... we are fine if you disagree as long as it is thought-provoking and sparks discussion🤯😉
rdcu.be
Why we need more individual-based parasite research
221
Reposted by Gerardo Fracasso
BES Evolutionary Ecology Group @bes-evolecol.bsky.social · 21/07/2026
We’re very excited to confirm that Rosemary Grant will be giving our inaugural online webinar in September. It’s free to all, so please look out for details of how to sign up for tickets.
15723
Reposted by Gerardo Fracasso
Simon Evans @sevans.bsky.social · 03/07/2026
A new group dedicated to evolutionary ecology! This is an opportunity to have a permanent community space for the field, as well as ensure regular conferences like #ExE2026. But it needs your help 👇
13820
Gerardo Fracasso @gfracasso.bsky.social · 02/07/2026
…aaand it’s tick time at #ExE2026!
040
Reposted by Gerardo Fracasso
Simon Evans @sevans.bsky.social · 02/07/2026
Fifteen minutes into @danielbolnick.bsky.social plenary at #ExE2026 and it’s already clear this is a fabulous presentation. A great start to day 3.
0193
Gerardo Fracasso @gfracasso.bsky.social · 02/07/2026
Let’s start the day at #ExE2026 with the much awaited (surely for me) plenary of @danielbolnick.bsky.social. The first slide already won my attention.
040
Reposted by Gerardo Fracasso
Erik Postma @erikpostma.bsky.social · 01/07/2026
After one and a half days of amazing talks at #ExE2026, it was time to show off some of the best coastline #Cornwall has on offer ☀️🌊⛰️ Lizard Point to Kynance Cove, with seals, choughs and ice cream. What a day!
1334
Gerardo Fracasso @gfracasso.bsky.social · 01/07/2026
@cleliagasparini.bsky.social just showed us the effect of heatwaves on a guppy brain. It is so 🤯 that I forgot to take a picture. Clearly, it has some behavioural/cognitive effects #ExE2026
brain.is
040
Gerardo Fracasso @gfracasso.bsky.social · 01/07/2026
What’s the coach of cooperation? Let’s find it out with Trine Bilde at #ExE2026! I’m sure it will be a great plenary.
050
Gerardo Fracasso @gfracasso.bsky.social · 30/06/2026
@markhanson.fediscience.org.ap.brid.gy is giving a very cool talk on antimicrobial resistance in drosophila in vivo. Very interesting!
100
Reposted by Gerardo Fracasso
Mark A. Hanson @hansonmark.bsky.social · 30/06/2026
Kicking off #ExE2026, @erikpostma.bsky.social introduces the room to the "weaponisation of sea shanties" as a VERY STRICT timekeeping measure to ensure speakers keep to time. Will we all be cursing or singing "Wellerman" by the end of it? We shall see!
A conference speaker is addressing the room with a slide showing housekeeping
2122
Reposted by Gerardo Fracasso
Suvi Ruuskanen @suviruuskanen.bsky.social · 28/06/2026
#ExE2026 (5) Clemence Furic, poster 106 "Early-life heat or cold exposure: does thermal stress affect telomere dynamic in great tits"
021
Gerardo Fracasso @gfracasso.bsky.social · 29/06/2026
Hey folks! I will be presenting not one but two posters at #ExE2026: Poster 106: “A framework for measuring ecologically relevant metabolism of wild insects” is about the work I carried out (and still ongoing) at the University of Sussex. PIs: Wiebke Schuett, Jeremy Niven 1/2
150
Gerardo Fracasso @gfracasso.bsky.social · 29/06/2026
It’s game on at #ExE2026 in Penryn @uniexecec.bsky.social. The first symposium on wild animals microbiome just kicked off!⚽️
181
Reposted by Gerardo Fracasso
Luís M. Silva @luismsilva.bsky.social · 28/06/2026
On my way to #ExE2026 in #Cornwall! ☀️ Into transmission heterogeneity? 🦠 🪱 🌎 Then come check my talk this Thursday, July 2nd at 16:30 in the Host-Pathogen Session 3 :)
085
Reposted by Gerardo Fracasso
Erik Postma @erikpostma.bsky.social · 24/06/2026
A few more days until the start of #ExE2026, the new evolutionary ecology 🧬✖️🌳 conference hosted @uniexecec.bsky.social in #Cornwall: 230 participants, 25 countries, 3 plenaries, 10 keynotes, 70 talks and over 100 posters. Also excursions, workshops, dinner, great swag and sea shanties 🎶 🤩 evoxeco.uk
33212
Reposted by Gerardo Fracasso
Tomos Potter @tomospotter.bsky.social · 27/06/2026
Getting excited for #ExE2026 ! Come check out my talk at 11am on Tuesday in Lecture Theatre B:
The title slide from my talk: Are relatives their own worst enemies? Competition among kin drives balancing and diversifying selection in an IBM. Featuring soe sketchy illustrations of birds pecking at seeds, and a bird with a medium-length beak "diversifying" into a bird with a long beak and a bird with a short beak.
0125
Reposted by Gerardo Fracasso
Ben Bolker @bbolker.bsky.social · 10/06/2026
new diamond open-access Journal of Statistical Ecology launched 🎉🎉🎉 jse.centre-mersenne.org @fredbarraquand.bsky.social @oaggimenez.bsky.social @marieaugermethe.bsky.social @vianeylb.bsky.social (apologies to any Bsky editors I missed)
jse.centre-mersenne.org
Journal of Statistical Ecology Journal of Statistical Ecology
011870
Gerardo Fracasso @gfracasso.bsky.social · 10/06/2026
Excited to be at the CEC symposium here in Penryn! Lots of good talks and science! And I got to show what I have been doing as well🤗
010
Reposted by Gerardo Fracasso
Mark A. Hanson @hansonmark.bsky.social · 28/05/2026
+15k signatures now in just over one day. Britons now favour rejoining the EU with a strong majority (+21). At 100k, it became "considered for debate in parliament." This is worth sharing. Tell parliament in clear terms what they're debating, and for who.
From Yougov tracker: public support for Britain rejoining the EU IS AT 56 support, 35 oppose. A net support of +21.

Among those who voted "Leave" in 2016, 22% would now vote "Remain."

They're vewy sowwy.Screenshot of the UK gov petition update that this petition passed 100k signatures in on May 27, 2026.

While the petition started 6 months ago, it has only recently garnered attention. On May 26th, it was near ~90k signatures.
1166
Gerardo Fracasso @gfracasso.bsky.social · 22/05/2026
I personally recommend the PIs involved😉
020
Gerardo Fracasso @gfracasso.bsky.social · 21/05/2026
Last week I found myself counting ticks on a bird, something I hadn't done in the last 3 years. It is a relatively boring and easy job... yet, I felt the soothing experience of restarting a (research) journey that had been abruptly interrupted. Really glad to be back again😊 #ticks #academia
010
Gerardo Fracasso @gfracasso.bsky.social · 11/05/2026
TICKologists: Looks like Ixodes arboricola does not turn its nose (hypostome?) up to birds of prey! Wondering how a nidicolous tick ended up on an Eastern Imperial Eagle, which makes an open nest🤔 #parasitology #ticks #host-parasite www.sciencedirect.com/science/arti...
sciencedirect.com
Hard tick infestation of birds of prey (Aves: Accipitriformes, Strigiformes, Falconiformes) in the Western Palearctic: New data and literature review
Tick infestation of songbirds has been extensively studied at global and regional scales but relevant data on birds of prey remain scarce and fragment…
020
Gerardo Fracasso @gfracasso.bsky.social · 06/05/2026
To the “TICKologists”: this recent article fills a knowledge gap in molecular and morphological identification between Ixodes arboricola and I. lividus. A really nice and much needed work… it is incredible how little basic info we have on some parasites www.sciencedirect.com/science/arti...
sciencedirect.com
Comparison and complete mitogenomes of two morphologically similar but ecologically different tick species, Ixodes arboricola and Ixodes lividus (subgenus Pholeoixodes)
Ixodes arboricola and Ixodes lividus are ornithophilic tick species. The former is typically associated with tree-hole dwelling birds, while the latte…
100
Reposted by Gerardo Fracasso
EvolDir @evoldir.bsky.social · 21/04/2026
📣 EvolDir is now managed by @eseb.bsky.social! We are delighted to be taking the reins and express our gratitude to both Brian Golding who began this service to the community in the mid-1980s and to @rdmpage.bsky.social who ran this account until now 👏 You can now find evoldir here: evoldir.net
217785
Reposted by Gerardo Fracasso
SORTEE @sortee.bsky.social · 15/04/2026
This seventh instalment of the #ECRAsks series is all about improving communication & engagement within and beyond the #openscience community. Check out Oakleigh Wilson’s conversation with Cecilia Baldoni on the #SORTEE blog to learn more! ✨ sortee.org/blog/2026/04...
195
Reposted by Gerardo Fracasso
Erik Postma @erikpostma.bsky.social · 24/03/2026
🚨 ABSTRACT SUBMISSION DEADLINE APPROACHING! 🚨 Only 1 week left to submit your abstract for #ExE2026! Submissions close April 1. All the details are at evoxeco.uk and below 👇
evoxeco.uk
Welcome
ExE 2026 is a 3-day conference aimed at evolutionary ecologists from around the world, hosted by the University of Exeter in beautiful Cornwall. It provides a friendly and inclusive platform for all c...
01014
Reposted by Gerardo Fracasso
Erik Postma @erikpostma.bsky.social · 24/03/2026
Do you need another reason to come to #ExE2026 this summer? There are still spaces available on some of our fantastic #ExE2026 excursions, so do make sure to sign up for one at evoxeco.uk.
042
Reposted by Gerardo Fracasso
Erik Postma @erikpostma.bsky.social · 13/02/2026
In addition to great science 🧪🧬🌳🪰, this is your chance to explore some of the best places in #Cornwall, such as Kynance Cove and the Lizard, Glendurgan Gardens, the Helford River by boat! 🥾⛴️ 🔭 sites.exeter.ac.uk/exe/excursio...
164
Reposted by Gerardo Fracasso
Erik Postma @erikpostma.bsky.social · 13/02/2026
Our stellar 🤩 list of invited speakers #ExE2026: @danielbolnick.bsky.social Trine Bilde, Dan Nussey, @sevans.bsky.social @andrewfoote.bsky.social @cleliagasparini.bsky.social Sarah Knowles, @liamlachs.bsky.social, Lizy Mittell, @keesvanoers.bsky.social, Alex Popadopolous & Katja Räsänen. evoxeco.uk
sites.exeter.ac.uk
Programme
We have a diverse programme, including plenary and keynote speakers, contributed talks and posters, excursions and conference dinner. Scientific programme There will be two parallel sessions, covering...
184
Gerardo Fracasso @gfracasso.bsky.social · 19/03/2026
And there will be really cool sessions on Host-Parasite Ecology and Evolution!! Still time to apply but hurry up!
110
Reposted by Gerardo Fracasso
Trends in Parasitology @cp-trendsparasitol.bsky.social · 06/03/2026
Colorful parasites: an overlooked frontier in animal coloration research
dlvr.it
Colorful parasites: an overlooked frontier in animal coloration research
The diverse coloration of animals has fascinated researchers over the past centuries. A growing body of evidence has documented the many functions of animal coloration, ranging from mate attraction to predator avoidance. Yet, the adaptive functions of parasite coloration have been largely neglected in this context, despite the fact that many parasites across diverse taxonomic groups exhibit colorful body patterns. In this opinion article, we discuss the potential adaptive functions of color in parasites. We first summarize some potential functions of parasite coloration based on an intensive review of the existing literature. We then propose several possible ecological, evolutionary, and biogeographical hypotheses regarding patterns in parasite coloration and outline future directions for this intriguing study frontier.
011
Gerardo Fracasso @gfracasso.bsky.social · 25/02/2026
Today, a different 𝐝𝐚𝐲 𝐢𝐧 𝐭𝐡𝐞 𝐨𝐟𝐟𝐢𝐜𝐞! I’m at the Royal Veterinary College in Brookmans Park (London) for a course and… Stay tuned!
010
Reposted by Gerardo Fracasso
Mark A. Hanson @hansonmark.bsky.social · 23/02/2026
Very excited to be advertising this project with the excellent cosupervision of Peter Mergaert through @i2bcparissaclay.bsky.social and @uniexecec.bsky.social. This position is open to international applicants and will involve stints in both Penryn UK and Paris France. Please share! Apply: adum.fr
An advertisement for a PhD position studying "Revealing the mechanistic basis of defence peptide antibacterial specificity." It shows fruit flies infected by green-fluorescent protein expressing bacteria, and describes the project and way to apply.
11825
Reposted by Gerardo Fracasso
Luisa F. Pallares @luisapallares.bsky.social · 18/02/2026
New Perspective!🔥It's fascinating how scientists from different fields but interested in the same question [e.g. genotype-phenoytpe relationship] can have such different perspectives. Here we put in our 2 cents wrt genetic effects being context-dependent, and pheno variation being mostly polygenic
academic.oup.com
Beyond Mendel: a call to revisit the genotype–phenotype map through new experimental paradigms
Abstract. The long-standing notion that genotypes map to phenotypes through simple one gene–one trait relationships continues to shape both research in the
03220
Reposted by Gerardo Fracasso
David López-Idiáquez @davididiaquez.bsky.social · 15/02/2026
We have published a new pre-print showing a decline in great tit adult and nestling mass of around 1 gram in 47 y. [rate of approx. -0.040 Hadanes] With @ellafcole.bsky.social, @devisatarkar.bsky.social, Sam. Crofts, @mcmahok.bsky.social & @sheldonbirds.bsky.social www.biorxiv.org/content/10.6...
Decline in body mass in adult (left) and nestling great tits. In the nestling plot, the purple line represents all nestling and the green line those that recruited to the population as breeders. Their different slope suggest an increase in the strength of selection on nestling mass something confirmed in the MS by analysing the temporal trends in selection differentials (see link for further information)
16331
Reposted by Gerardo Fracasso
Kate Laskowski @katelaskowski.bsky.social · 10/02/2026
How do we know our research results are REAL? We replicate them! Most folks agree but lament on how hard it is to publish these replications. My dearest gentle reader, lament no more! Delighted to unveil: Replication Studies, a new section of Behavioral Ecology 1/ academic.oup.com/beheco/artic...
academic.oup.com
Replication studies: a win-win for early-career training and behavioral ecology
Replicating previous research builds confidence that results are real and meaningful. But close replications are rare due to limitations in resources and d
5245129
Gerardo Fracasso @gfracasso.bsky.social · 11/02/2026
I wasn’t aware of how cute and interesting cuttlefish could be until @matteosanton.bsky.social showed us his research at @uniexecec.bsky.social Those pattern changes during predation are really mesmerising!🦑
072
Gerardo Fracasso @gfracasso.bsky.social · 29/01/2026
A thought provoking presentation just given by Nicki Mitchell (University of Western Australia) on climate change mitigation strategies at @uniexecec.bsky.social I’m pretty sure it will spark some discussion😉 Well done!
010
Reposted by Gerardo Fracasso
University of Exeter CEC @uniexecec.bsky.social · 24/11/2025
011
Reposted by Gerardo Fracasso
Erik Postma @erikpostma.bsky.social · 21/11/2025
A lot has happened since our first announcement of #ExE2026, an evolutionary ecology conference hosted by @uniexecec.bsky.social in #Cornwall from June 29 to July 3 2026. Have a look at our new website to see our confirmed plenary speakers, the mid-conference excursions, and more. 👉 evoxeco.uk 👈
The logo of the Evolution x Ecology 2026 conference in Cornwall, UK.
11922
Gerardo Fracasso @gfracasso.bsky.social · 21/11/2025
Very interesting presentation from Sarah Perkins yesterday at @uniexecec.bsky.social on the use of wildlife pictures uploaded on the web as tools for screening disease outbreaks!
000
Gerardo Fracasso @gfracasso.bsky.social · 20/11/2025
Do ticks use environmental cues to preferentially drop off in more suitable environments? We tested for dry and bare vs moisturized and rich environmental in Ixodes ricinus on the wood mouse. Article here: doi.org/10.1007/s104...
doi.org
Spatial variation in detachment rates of larval Ixodes ricinus from a common host (Apodemus sylvaticus): an experiment - Experimental and Applied Acarology
Because of their low intrinsic mobility, spatial distribution of Ixodes ticks depends strongly on movement of their hosts, but this may be modulated by the tick’s decision to detach in relation to env...
000
Reposted by Gerardo Fracasso
Barbara Tschirren @btschirren.bsky.social · 12/11/2025
*PhD opportunity @uniexecec.bsky.social* How does antimicrobial resistance spread through ecosystems? Combine fieldwork (rodent trapping 🐭, habitat surveys 🌳, pheasant sampling 🦤), molecular techniques, GIS, and spatial modelling to understand AMR evolution and spread. 🔬🦠🧪 Please repost!
shorturl.at
Antimicrobial Resistance (AMR) in Gamebirds: A One Health Approach to Understanding and Mitigating the Risk of AMR Evolution and Spread through Ecosystems at University of Exeter on FindAPhD.com
PhD Project - Antimicrobial Resistance (AMR) in Gamebirds: A One Health Approach to Understanding and Mitigating the Risk of AMR Evolution and Spread through Ecosystems at University of Exeter, list...
01019
Reposted by Gerardo Fracasso
Mark A. Hanson @hansonmark.bsky.social · 11/11/2025
We wrote the Strain on scientific publishing to highlight the problems of time & trust. With a fantastic group of co-authors, we present The Drain of Scientific Publishing: a 🧵 1/n Drain: arxiv.org/abs/2511.04820 Strain: direct.mit.edu/qss/article/... Oligopoly: direct.mit.edu/qss/article/...
A table showing profit margins of major publishers. A snippet of text related to this table is below.

1. The four-fold drain
1.1 Money
Currently, academic publishing is dominated by profit-oriented, multinational companies for
whom scientific knowledge is a commodity to be sold back to the academic community who
created it. The dominant four are Elsevier, Springer Nature, Wiley and Taylor & Francis,
which collectively generated over US$7.1 billion in revenue from journal publishing in 2024
alone, and over US$12 billion in profits between 2019 and 2024 (Table 1A). Their profit
margins have always been over 30% in the last five years, and for the largest publisher
(Elsevier) always over 37%.
Against many comparators, across many sectors, scientific publishing is one of the most
consistently profitable industries (Table S1). These financial arrangements make a substantial
difference to science budgets. In 2024, 46% of Elsevier revenues and 53% of Taylor &
Francis revenues were generated in North America, meaning that North American
researchers were charged over US$2.27 billion by just two for-profit publishers. The
Canadian research councils and the US National Science Foundation were allocated US$9.3
billion in that year.A figure detailing the drain on researcher time.

1. The four-fold drain

1.2 Time
The number of papers published each year is growing faster than the scientific workforce,
with the number of papers per researcher almost doubling between 1996 and 2022 (Figure
1A). This reflects the fact that publishers’ commercial desire to publish (sell) more material
has aligned well with the competitive prestige culture in which publications help secure jobs,
grants, promotions, and awards. To the extent that this growth is driven by a pressure for
profit, rather than scholarly imperatives, it distorts the way researchers spend their time.
The publishing system depends on unpaid reviewer labour, estimated to be over 130 million
unpaid hours annually in 2020 alone (9). Researchers have complained about the demands of
peer-review for decades, but the scale of the problem is now worse, with editors reporting
widespread difficulties recruiting reviewers. The growth in publications involves not only the
authors’ time, but that of academic editors and reviewers who are dealing with so many
review demands.
Even more seriously, the imperative to produce ever more articles reshapes the nature of
scientific inquiry. Evidence across multiple fields shows that more papers result in
‘ossification’, not new ideas (10). It may seem paradoxical that more papers can slow
progress until one considers how it affects researchers’ time. While rewards remain tied to
volume, prestige, and impact of publications, researchers will be nudged away from riskier,
local, interdisciplinary, and long-term work. The result is a treadmill of constant activity with
limited progress whereas core scholarly practices – such as reading, reflecting and engaging
with others’ contributions – is de-prioritized. What looks like productivity often masks
intellectual exhaustion built on a demoralizing, narrowing scientific vision.A table of profit margins across industries. The section of text related to this table is below:

1. The four-fold drain
1.1 Money
Currently, academic publishing is dominated by profit-oriented, multinational companies for
whom scientific knowledge is a commodity to be sold back to the academic community who
created it. The dominant four are Elsevier, Springer Nature, Wiley and Taylor & Francis,
which collectively generated over US$7.1 billion in revenue from journal publishing in 2024
alone, and over US$12 billion in profits between 2019 and 2024 (Table 1A). Their profit
margins have always been over 30% in the last five years, and for the largest publisher
(Elsevier) always over 37%.
Against many comparators, across many sectors, scientific publishing is one of the most
consistently profitable industries (Table S1). These financial arrangements make a substantial
difference to science budgets. In 2024, 46% of Elsevier revenues and 53% of Taylor &
Francis revenues were generated in North America, meaning that North American
researchers were charged over US$2.27 billion by just two for-profit publishers. The
Canadian research councils and the US National Science Foundation were allocated US$9.3
billion in that year.The costs of inaction are plain: wasted public funds, lost researcher time, compromised
scientific integrity and eroded public trust. Today, the system rewards commercial publishers
first, and science second. Without bold action from the funders we risk continuing to pour
resources into a system that prioritizes profit over the advancement of scientific knowledge.
8644453
Gerardo Fracasso @gfracasso.bsky.social · 11/11/2025
Hello world!👋 I finally migrated to Bluesky as well🙂 Stay tuned for (scientific) updates on host-parasite interactions... mostly ticks and birds in fairness... And life at @uniexecec.bsky.social (Cornwall, UK)😜
060