Ryosuke Iritani @ryosukeiritani.bsky.social · 25/03/2026Bonus: these methods preserve the stability properties of evolutionary equilibria as well. The projection method preserves Fisher's reproductive value (though only to the first order of selection). Matrix calculus makes biology so easy! 000
Ryosuke Iritani @ryosukeiritani.bsky.social · 25/03/2026Key result 2: low-dimensionalize the system. You can arbitrarily simplify the class-structure, which is simply a projection onto a reduced dimensional space. Meanwhile, this is mathematically identical to separating the timescales (i.e., quasi-equilibrium approximation). 100
Ryosuke Iritani @ryosukeiritani.bsky.social · 25/03/2026Key result 1: determinant is great. The invasion condition R_0>1 is immensely simplified in a scalar form: -det(I–G)>0, where G is the next-generation matrix, and R_0=(spectral radius of G). 100
Ryosuke Iritani @ryosukeiritani.bsky.social · 25/03/2026New preprint out with Troy Day! www.biorxiv.org/content/10.6... We unify numerous methodologies of adaptive dynamocs into a single framework we term “structural evolutionary invasion analysis.” If you have a class structure in your evolutionary model, consider applying this method!biorxiv.org 171
Ryosuke Iritani @ryosukeiritani.bsky.social · 25/03/2026Really amazing to see this out! Thanks to such dynamic researchers! 120
Reposted by Ryosuke IritaniAshleigh Griffin @asgriffin.bsky.social · 13/02/2026Thanks to @ryosukeiritani.bsky.social and iTHEMS @RIKEN for hosting us while we were working on this manuscript. 🙏🏽🇯🇵❤️🇬🇧 021
Reposted by Ryosuke IritaniStu West @stuwest.bsky.social · 20/03/2026Final version just published of our review on the ecological and evolutionary consequences of cooperation www.journals.uchicago.edu/doi/10.1086/... @ryosukeiritani.bsky.social @annadewar.bsky.social @asgriffin.bsky.social @lauriebelch.bsky.social @asn-amnat.bsky.social 03019
Reposted by Ryosuke IritaniDr Dan Shugar 🇨🇦 @watershedlab.bsky.social · 04/01/2026After reviewing nearly 200 applications from prospective grad students and postdocs over the past few months for a couple different 🧪⚒️ postings, here are some tips, at least as they apply to North American positions. I hope they help future applicants. Share with your networks. 🧵 412365
Ryosuke Iritani @ryosukeiritani.bsky.social · 07/12/2025As you know, Hiragino Mincho is kept updating. But I realized the latest version looks quite different from the previous one. Now pretty much resembles Haranoaji Mincho (which is also a nice font). 000
Reposted by Ryosuke IritaniRetraction Watch @retractionwatch.com · 16/11/2025A paper critiquing post-publication peer review has numerous made-up references, including a @nature.com article falsely attributed to our Ivan Oransky. link.springer.com/article/10.1...pubpeer.comPubPeer - An expert criticism on post-publication peer review platform...There are comments on PubPeer for publication: An expert criticism on post-publication peer review platforms: the case of pubpeer (2025) 15829
Reposted by Ryosuke Iritanimehori @ めほり @mehori.bsky.social · 13/11/2025「日本は署名せず」 「日本は署名せず」 「日本は署名せず」 気候学研究者として、へなへなと力が抜けるなあ mainichi.jp/articles/202...mainichi.jp気候変動の「偽情報」に対処 COP30で宣言採択 日本は署名せず | 毎日新聞ブラジル北部ベレンで開催中の地球温暖化対策を話し合う国連気候変動枠組み条約第30回締約国会議（COP30）で12日、気候変動を巡って広がる「偽情報」への対策を促進する宣言が採択された。ブラジルと国連などが共同議長を務める「気候変動の正しい情報イニシアチブ」が提案し、フランスやドイツ、カナダ、デンマ 0279185
Reposted by Ryosuke IritaniÁkos T Kovács @evolvedbiofilm.bsky.social · 02/11/2025The evolutionary and ecological consequences of cooperation -in American Naturalist by @stuwest.bsky.social, @annadewar.bsky.social, @ryosukeiritani.bsky.social, Laurence Belcher, and @asgriffin.bsky.social www.journals.uchicago.edu/doi/abs/10.1...journals.uchicago.eduThe evolutionary and ecological consequences of cooperation | The American Naturalist: Vol 0, No ja 01810
Reposted by Ryosuke Iritaniハチワレのぽぽち @mugipopo.bsky.social · 24/08/2025香害で苦しんでいるひとたちがたくさんいることや、原因に身近にある柔軟剤などが影響していることがもっと知られて欲しい わたしも洗剤や柔軟剤は無香料に変えました。比較的安価で手に入りやすいのはサラヤ、シャボン玉、ミヨシあたり。 香害は誰もが当事者。個人の問題じゃなくて、社会の問題だと思う 小中10%、「香害」で体調不良 消費者団体などが対策要望:東京新聞デジタル www.tokyo-np.co.jp/article/429816tokyo-np.co.jp小中１０％、「香害」で体調不良 消費者団体などが対策要望：東京新聞デジタル衣料品の洗剤や柔軟剤に含まれる香料の人工化学物質によって小中学生の１０・１％が、学校で頭痛や吐き気などの症状に陥った経験があることが２... 054
Ryosuke Iritani @ryosukeiritani.bsky.social · 15/08/2025入国の検疫手続きや、各地のサービスなどを見ると妥当かなと思いました。日本も頑張れよと。 100
Reposted by Ryosuke IritaniYung En Chee @yungenchee.bsky.social · 06/08/2025#PlasticsTreaty Plastics "recycling" is largely bullshit & has been for >50 years NO "last chance" for human, climate, biodiversity & ocean-harming plastics—REGULATE plastic production 610749
Reposted by Ryosuke IritaniNicolas Galtier @nicolasgaltier.bsky.social · 17/07/2025Non-profit publishers (PLoS, Oxford, Cambridge) and publishers partnering a lot with academia (Wiley) are much more committed to open science than the others - MDPI being the worst by large. (4/5) 43727
Reposted by Ryosuke IritaniTakefumi Nakazawa @takefuminakazawa.bsky.social · 12/04/2025TREEより出たばかりの記事から。 「Global North（北半球の先進国）の研究者、特に資金が豊富な研究室の研究者は科学の最先端を開拓しているとみなされるが、Global South（南半球の新興国や途上国）の研究者は事例研究の実施、ロジスティクスの支援、データ提供者とみなされることが多い 。 GS 研究者として自身の経験から、GS の GN 科学者が主導する研究には GS 研究者の参加が含まれることが多いが、共著や共同リーダーシップの手段としての彼らの貢献が不当に認められていないことを知っています。」 www.sciencedirect.com/science/arti...sciencedirect.comElevating local perspectives for equity in ecological researchHigh-profile studies conducted in Global South (GS) countries with few, or no GS authors are published frequently, underrepresenting GS researchers in… 021
Reposted by Ryosuke IritaniAshleigh Griffin @asgriffin.bsky.social · 27/06/2025Thank you to everyone attending the "Writing and DEI Workshop" at RIKENS, organized by @ryosukeiritani.bsky.social. Gender equality in STEM is a global issue and we need to share our experiences and learn from one another. Thank you for sharing your stories and enthusiasm! 🙏 and @ITHEms, @JSPS 🇯🇵❤️ 132
Reposted by Ryosuke IritaniStu West @stuwest.bsky.social · 27/06/20251/3 I was just lucky enough to get to do a couple of sessions on scientific writing in a DEI & Writing Workshop at Riken, Tokyo. Huge thank you to @ryosukeiritani.bsky.social for organising such an open and supportive workshop, and all the attendees for being so engaged and interactive. 132
Ryosuke Iritani @ryosukeiritani.bsky.social · 07/06/2025New papers! - Beta-diversity doi.org/10.1002/ecog.07737 - Cultural dynamics doi.org/10.1016/j.evolhumbehav.2025.106693 - Sex allocation & coexistence doi.org/10.1002/oik.11133 w/ students: - Phytoplankton doi.org/10.1101/2025.06.03.657605 - Parasitoid lifehistory doi.org/10.1101/2025.02.22.639661doi.orgJaccard dissimilarity in stochastic community models based on the species‐independence assumptionA fundamental problem in ecology is understanding the changes in species composition among sites (i.e. beta-diversity). It is unclear how spatial heterogeneity in species occupancy across sites shape... 063
Reposted by Ryosuke IritaniStu West @stuwest.bsky.social · 20/05/2025And a commentary on the Baumard & André cultural evolution paper with Ryo! www.sciencedirect.com/science/arti...sciencedirect.comUsing inclusive fitness and eco-evolutionary theory to model cultural evolutionBaumard and André (2025) have suggested that cultural dynamics can be studied as a form of ecology. This provides a simpler unified approach to explai… 042
