Yoshiaki KAI
@yoshiakikai.bsky.social
📤 84
📥 70
📝 529
Fish biologist, Kyoto University
初夏の味覚・京のブランド産品「丹後とり貝」去年は貝毒で焼却処分、ことしも海水温上昇で出荷見込みは例年の1割以下 2年連続の厳しい状況に漁師「ショック」京都・舞鶴湾(関西テレビ)
#Yahooニュース
news.yahoo.co.jp/articles/20a...
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初夏の味覚・京のブランド産品「丹後とり貝」去年は貝毒で焼却処分、ことしも海水温上昇で出荷見込みは例年の1割以下 2年連続の厳しい状況に漁師「ショック」京都・舞鶴湾(関西テレビ) - Yahoo!ニュース
京都府北部の”初夏の味覚”「丹後とり貝」の出荷が始まりました。ことしの出荷は例年の1割以下となる見込みです。 京都府北部の舞鶴湾などで養殖されている「丹後とり貝」は上品な甘さが特徴で、”京のブラン
https://news.yahoo.co.jp/articles/20a5c4300ab1eed8faff5b2a900a3797a6269318
about 4 hours ago
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今日から丹後トリガイですがなかなか大変なようです…。
about 4 hours ago
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reposted by
Yoshiaki KAI
Prosanta Chakrabarty
1 day ago
Smithsonian Fish Curator position announcement! Note the application dates of May 12 – June 2, 2026. Should be posted here tomorrow:
trustcareers.si.edu#js-careers-j...
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reposted by
Yoshiaki KAI
Emily Yeager
1 day ago
Looking for some weird science to brighten your Monday? Check out our new paper on remora cloacal diving behavior in manta rays published today in Ecology and Evolution!
onlinelibrary.wiley.com/doi/10.1002/...
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Hiding in Plain Sight: Evidence of Echeneidae Cloacal and Gill Diving Behavior in Manta Ray Hosts
Here we document seven observations of Echeneidae cloacal diving behavior in manta rays and one observation of gill attachment behavior. These observations span all three currently described species ...
https://onlinelibrary.wiley.com/doi/10.1002/ece3.73548
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reposted by
Yoshiaki KAI
ZooKeys
5 days ago
🌊 Four new species of the flabby whalefish genus Gyrinomimus were identified across the Atlantic and Pacific oceans based on physical features such as gill filament length and fin ray counts. 🐟 Read more:
doi.org/10.3897/zookeys.1279.171946
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reposted by
Yoshiaki KAI
Andrew Roger
7 days ago
IQ-TREE 3: Phylogenomic Inference Software using Complex Evolutionary Models
academic.oup.com/mbe/article/...
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IQ-TREE 3: Phylogenomic Inference Software using Complex Evolutionary Models
Abstract. IQ-TREE (https://iqtree.github.io/) is a widely used open-source software tool for efficiently inferring phylogenetic trees under maximum likelih
https://academic.oup.com/mbe/article/doi/10.1093/molbev/msag117/8669857
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reposted by
Yoshiaki KAI
Matt Friedman
7 days ago
Ray-finned fishes are famously diverse, but we know little about their brains or cranial endocasts.
@rodrigoichthys.bsky.social
opens this black box with a dice-CT survey of 86 species across the actinopt tree of life.
#OA
in
@royalsocietypublishing.org
🐟🧠
royalsocietypublishing.org/rspb/article...
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実習3日目。見学。
7 days ago
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reposted by
Yoshiaki KAI
Prosanta Chakrabarty
7 days ago
Love this paper on maybe my favorite group of fishes, the ponyfishes (Leiognathidae) Morphology of the light-organ system and bioluminescent blinking in the ponyfish tribe Equulitini (Teleostei: Leiognathidae) Ghedotti et al. 2026
#oa
journals.plos.org/plosone/arti...
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Morphology of the light-organ system and bioluminescent blinking in the ponyfish tribe Equulitini (Teleostei: Leiognathidae)
Ponyfishes in the Family Leiognathidae uniquely possess a complex bioluminescent system with an esophageal light-producing organ containing bioluminescent bacterial symbionts, a reflective gas bladder...
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0347687
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実習2日目。いい天気でした。
8 days ago
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reposted by
Yoshiaki KAI
Moisés A. Bernal
9 days ago
Excited to share this manuscript from my lab, where we describe and compare the genomes of the trans-isthmian species Abudefduf saxatilis and A. troschelii. Available now on
@genomebiolevol.bsky.social
@smithsonianmag.bsky.social
academic.oup.com/gbe/advance-...
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今日から少人数の実習ですが爆荒れ…。
9 days ago
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reposted by
Yoshiaki KAI
Matt Friedman
12 days ago
There are more individuals of the deep-sea fish Cyclothone than any other vertebrate genus, maybe as many as one million billion. Distinctively ornamented ichthyoliths place the origin of Cyclothone in the greenhouse world of the early Eocene, ~55.6 Ma.
royalsocietypublishing.org/rspb/article...
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実習前のネタ探しに…。今日は底曳が入っていました。
12 days ago
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この時期の串本でしかみないミカン、香橘。紀伊大島実験所で交配されてできたという話を聞いたけどどうなんやろ?
13 days ago
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reposted by
Yoshiaki KAI
Yusuke MIYAZAKI
13 days ago
スミツキハナダイの雌性先熟型の性転換を形態・遺伝・組織から示し、キイハナダイも同様の可能性があることを示しました。 昨年に修了した院生の修論の一部で、今の職場に移ってきてから初めて修論や卒論の内容を公表できたという、個人的にも記念すべき論文。 組織学的観察は個人的に初めて挑んだので、大変勉強になりました(分子生物学の活用としても2報目でまだまだ勉強中ですが)。 第一著者の野村さんは観察が非常に丁寧で、修了後にも根気強く英語論文化を頑張り、素晴らしい重厚な論文に昇華できました。適切で細かい修正案をいただいた査読者と編集者にも深く感謝。OAです!
doi.org/10.1007/s102...
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Sexual dimorphism and protogeny in two species of Selenanthias (Serranidae: Anthiadinae) collected from Japanese waters - Ichthyological Research
Sex changes in fish are commonly driven by social or reproductive advantages associated with body size, and protogyny is particularly prevalent in species exhibiting male territoriality or haremic mating systems. Within the family Serranidae, several species exhibit sexual dimorphism and protogyny; however, in the genus Selenanthias, only Selenanthias analis Tanaka 1918 has been reported to exhibit sexual dimorphism. The present study investigated sexual dimorphism and the occurrence of protogynous hermaphroditism in two serranid species, S. analis and Selenanthias sp. sensu Ikeda and Nakabo 2015, based on external morphology, gonadal histology, and mitochondrial DNA sequences (partial COI region). Morphological and histological analyses revealed consistent sex-specific coloration and differences in the fin filament lengths in both species. Six individuals of S. analis possessed gonads containing both ovarian and testicular tissues. Among these, two individuals morphologically identified as males and four individuals represented both female and male characteristics. In addition to these six individuals, two individuals exhibited both female and male morphological characteristics but possessed only ovarian tissue. Genetic analyses supported the recognition of two distinct species (S. analis and Selenanthias sp.) and confirmed that the color morphs within each species represent intraspecific sexual dimorphism. These findings provide the first evidence of sex change in the genus Selenanthias, establishing S. analis as a protogynous species and suggesting a similar potential for sex change in Selenanthias sp.
https://doi.org/10.1007/s10228-026-01070-1
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reposted by
Yoshiaki KAI
日本の研究.com ニュース
13 days ago
【注目プレスリリース】仔稚魚の動きを可視化する「階段チャート」―東シナ海のマアジの分散過程を解明― / 京都大学,水産研究・教育機構
https://research-er.jp/articles/view/155556
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仔稚魚の動きを可視化する「階段チャート」―東シナ海のマアジの分散過程を解明―
2026.04.30 京都大学,水産研究・教育機構 プレスリリース 概要京都大学白眉センター坂本達也特定助教、大学院人間・環境学研究科武藤大知修士課程学生(研究...
https://research-er.jp/articles/view/155556
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何とか4月中に行けてよかった。
14 days ago
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2週間前のリベンジ南紀。
14 days ago
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reposted by
Yoshiaki KAI
20 days ago
Thrilled to share our recent publication in
@nature.com
. We discovered that snow carps experienced a relatively recent whole genome duplication
#WGD
, making this lineage an ideal lineage to study
#rediploidization
.
www.nature.com/articles/s41...
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Chromosomal fusions trigger rediploidization of autopolyploid genomes - Nature
Genomic data from snow carps reveal that the fusion of chromosomes initiates rediploidization following whole-genome duplication.
https://www.nature.com/articles/s41586-026-10439-1
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reposted by
Yoshiaki KAI
Marine Ecology Progress Series
16 days ago
🦤🌐🧪 Recent egg survey data show that sardine spawning areas expanded during 2011−2020, with low overlap with anchovy spawning areas in the Kuroshio Current system, possibly driven by early-2010s environmental shifts and anchovy stock decline.
bit.ly/meps15106
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うむ。
16 days ago
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今日は京都でベース弾いてました。サポートとは言え忙しすぎてリハも参加できずぶっつけ本番でしたが何とか大きなミスはなく…。もうちょっと楽しむ余裕が欲しいところ。
17 days ago
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reposted by
Yoshiaki KAI
Nozomi Nakanishi
18 days ago
テーマパーク化より調査研究の充実目指す 茨城県自然博物館の新館長(朝日新聞)
www.asahi.com/articles/ASV...
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テーマパーク化より調査研究の充実目指す 茨城県自然博物館の新館長:朝日新聞
今月1日付でミュージアムパーク茨城県自然博物館の4代目館長に就任した東京農業大学森林総合科学科教授だった山崎晃司(こうじ)氏(64)が、朝日新聞のインタビューに応じた。自然博物館としては国内有数の来…
https://www.asahi.com/articles/ASV4R4FGFV4RUJHB00CM.html
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reposted by
Yoshiaki KAI
日経電子版
18 days ago
試薬費や旅費が高騰、研究者の9割「影響」 文部科学省調査
www.nikkei.com/article/DGXZQO...
「海外旅費の高騰により国際学会への発表・参加を断念・ちゅうちょ」「旅費規程を超えた分は自己負担」といった意見が寄せられました。 物価と連動する研究費の導入など、新たな政策が求められています。
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試薬費や旅費が高騰、研究者の9割「影響」 文部科学省調査 - 日本経済新聞
文部科学省の科学技術・学術政策研究所(NISTEP)は24日、大学や研究機関、企業などの研究者らを対象とした2025年度の意識調査の結果を発表した。試薬費や旅費などの価格が上昇しており、研究者の9割が研究活動やマネジメント業務に影響が出ていると回答した。物価連動性の研究費の導入など、新たな政策が求められる。毎年NISTEPが実施している定点調査で25年9月から26 年1月にかけて2154人の
https://www.nikkei.com/article/DGXZQOSG23ALQ0T20C26A4000000/?n_cid=SNSBS001&n_tw=1777029236
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京都で授業。今日は系統学のおはなし。
19 days ago
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reposted by
Yoshiaki KAI
日本の研究.com ニュース
20 days ago
【注目プレスリリース】陸から海、そして再び陸へ―日本海形成を経た大地の歴史を示す地質図を刊行 -山陰海岸ユネスコ世界ジオパーク域の新たな5万分の1地質図幅「浜坂」 - / 産業技術総合研究所
https://research-er.jp/articles/view/155400
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陸から海、そして再び陸へ―日本海形成を経た大地の歴史を示す地質図を刊行 -山陰海岸ユネスコ世界ジオパーク域の新たな5万分の1地質図幅「浜坂」 -
2026.04.23 産業技術総合研究所 プレスリリース ポイント延べ400日を超える現地調査と、採取試料の化学組成・年代の分析を基に精密な地質図を作成日本海形成...
https://research-er.jp/articles/view/155400
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今日は仔稚魚調査。沖に見えている船にも学生が乗っている。
21 days ago
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reposted by
Yoshiaki KAI
Marine Ecology Progress Series
23 days ago
🦤🌐🧪 Sandeels are a vital component in marine food webs. We created habitat preference maps by combining seabed characteristics with environmental parameters to train a predictive model, providing useful tools for better decisions about MPAs.
bit.ly/meps15101
@afbini.gov.uk
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実験所のサクラ🌸とウメ
23 days ago
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久しぶりに所内でウサギ。
24 days ago
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reposted by
Yoshiaki KAI
Thibault (Tibo) Leroy
25 days ago
Our review on adaptive introgression in the context of climate adaptation is now published in Mol Ecol:
onlinelibrary.wiley.com/doi/10.1111/...
In a nutshell: often invoked theoretically, rarely unambiguously demonstrated empirically! Many thanks to everyone who shared feedback on earlier versions
add a skeleton here at some point
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授業とか会議とかで京都。運転が好きなのではなく運転している時間がいいのかもしれない。
26 days ago
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ヒメジはヒゲの色🥸
27 days ago
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今日は地元で。
27 days ago
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天気が崩れるのが早くて爆荒れでした。
28 days ago
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疲れたけどかっこいい😎
28 days ago
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すわっ。
29 days ago
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reposted by
Yoshiaki KAI
Michalis Mihalitsis
29 days ago
New paper out with
@cichlidnick.bsky.social
and Peter C. Wainwright. We show that different habitats impact fish diversification. Habitats with a complex benthos show increased diversification rates across ray-finned fishes.
www.pnas.org/doi/epdf/10....
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reposted by
Yoshiaki KAI
Evolutionary Journal of the Linnean Society
about 1 month ago
Twenty five years on from Dolph Schluter's book "The Ecology of Adaptive Radiation" that reshaped the way adaptive radiation was studied, this review revisits key questions raised to evaluate the progress made over the past quarter century, 8 of which remain unresolved...🌍🧪👇
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‘The ecology of adaptive radiation’ revisited: A 25-year reflection
Abstract. Twenty-five years ago, the book The Ecology of Adaptive Radiation by Dolph Schluter presented a testable framework that integrated ecology, genet
https://doi.org/10.1093/evolinnean/kzag006
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標本用のイソプロが全然入荷されないというのは最近の世界情勢の影響?知らんけど。
about 1 month ago
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今日から魚類学の授業。京都はもうサクラもほとんど散っていました。
about 1 month ago
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飛行時間15時間とかありえん。
about 1 month ago
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夜明けが早い。
about 1 month ago
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reposted by
Yoshiaki KAI
Dr. Sarah Z. Gibson, PhD
about 1 month ago
“Fintastic” finds from the Davis Fishes Lab at
@stcloudstate.bsky.social
and led by
@scsualumni.bsky.social
Alex Maile, currently a PhD candidate at the University of Kansas
@kueebgso.bsky.social
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Research traces evolution of anglerfishes’ famed fishing-rod lures
Variously horrific- or alien-looking, many female anglerfishes sport long, protruding lures used for enticing prey or signaling during mating. Now, research from the University of Kansas is giving new...
https://news.ku.edu/news/article/research-traces-evolution-of-anglerfishes-famed-fishing-rod-lures
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同時にハゼとかカサゴのすごい論文が出てる。絵がすごい。
about 1 month ago
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クサウオ新作が出ました。The Rare Snailfish Menziesichthys alaid (Teleostei: Liparidae), Newly Recorded from the Southern Sea of Okhotsk and Bering Sea Slope, Now Transferred to the Genus Paraliparis
www.jstage.jst.go.jp/article/spec...
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The Rare Snailfish Menziesichthys alaid (Teleostei: Liparidae), Newly Recorded from the Southern Sea of Okhotsk and Bering Sea Slope, Now Transferred …
Three specimens of a rare snailfish, Menziesichthys alaid Prokofiev and Iftime, 2020 (Teleostei: Perciformes: Liparidae), collected from Rausu, Hokkai …
https://www.jstage.jst.go.jp/article/specdiv/31/1/31_SD25-28/_article/-char/ja
about 1 month ago
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reposted by
Yoshiaki KAI
Alex Maile
about 1 month ago
‼️NEW ANGLERFISH PAPER! 🐟🎣 So excited to share the final part of my Master’s research! We explore the bizarre tacklebox of anglerfish lures and show how these fishes evolved different ways to attract prey and maybe even mates in the deep sea. 🧪🦑🌊🦇🦀 Open access paper link:
doi.org/10.1643/i202...
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なんかアップデートされている。
about 1 month ago
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学生が釣ってきた魚をもらった。
about 1 month ago
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