Ryota HASEGAWA
@ryotahasegawa922.bsky.social
JSPS Overseas Research Fellow (University of Otago, New Zealand)
parasite ecology/parasitic copepod/Salmincola/salmonid
サケ科魚類に寄生するカイアシ類「サルミンコーラ」の情報を集めています。 元北海道大学環境科学院
WEBsite: https://ryotahase344922.wixsite.com/website
parasite ecology/parasitic copepod/Salmincola/salmonid
サケ科魚類に寄生するカイアシ類「サルミンコーラ」の情報を集めています。 元北海道大学環境科学院
WEBsite: https://ryotahase344922.wixsite.com/website
Reposted by Ryota HASEGAWA
Reposted by Ryota HASEGAWA
Is it stressful to be surrounded by infected individuals, even if you're not infected yourself? Might this even increase mortality (if others could have performed work but now won't)? Sounds plausible, but we don't have evidence from very many systems. Here's one! academic.oup.com/evolut/advan...
Parasite prevalence in a social host has colony-wide impacts on transcriptional activity and survival
Abstract. Parasites pose significant challenges not only to individual hosts but also to entire social groups. We investigated the effects of parasitism by
academic.oup.com
July 4, 2025 at 4:35 AM
Is it stressful to be surrounded by infected individuals, even if you're not infected yourself? Might this even increase mortality (if others could have performed work but now won't)? Sounds plausible, but we don't have evidence from very many systems. Here's one! academic.oup.com/evolut/advan...
Reposted by Ryota HASEGAWA
Endoparasite communities of New Zealand Penguins differ over time and among species
doi.org/10.1007/s002...
doi.org/10.1007/s002...
Endoparasite communities of New Zealand Penguins differ over time and among species - Marine Biology
Parasites can provide valuable insights into the ecology and health of their hosts and the state of the surrounding ecosystem. In this study, we describe the helminth parasite communities infecting pe...
doi.org
June 11, 2025 at 1:38 AM
Endoparasite communities of New Zealand Penguins differ over time and among species
doi.org/10.1007/s002...
doi.org/10.1007/s002...
Another paper was out in International Journal for Parasitology!
We systematically reviewed the relationships between fish body condition and parasite infections, very common approach for elucidating negative impacts of parasites on host health
We systematically reviewed the relationships between fish body condition and parasite infections, very common approach for elucidating negative impacts of parasites on host health
Effect of parasite infections on fish body condition: a systematic review and meta-analysis
doi.org/10.1016/j.ij...
doi.org/10.1016/j.ij...
May 25, 2025 at 11:08 PM
Another paper was out in International Journal for Parasitology!
We systematically reviewed the relationships between fish body condition and parasite infections, very common approach for elucidating negative impacts of parasites on host health
We systematically reviewed the relationships between fish body condition and parasite infections, very common approach for elucidating negative impacts of parasites on host health
My first paper about microbiome in trematodes was out in Microbial Ecology!
Testing for Consistency in Co-occurrence Patterns Among Bacterial Taxa Across the Microbiomes of Four Different Trematode Parasites
doi.org/10.1007/s002...
doi.org/10.1007/s002...
Testing for Consistency in Co-occurrence Patterns Among Bacterial Taxa Across the Microbiomes of Four Different Trematode Parasites - Microbial Ecology
Elucidating the specific processes and drivers of community assembly in the host microbiome is essential to fully understand host biology. Toward this goal, an important first step is to describe co-o...
doi.org
May 25, 2025 at 11:05 PM
My first paper about microbiome in trematodes was out in Microbial Ecology!
Reposted by Ryota HASEGAWA
森と川の季節的なつながりがアマゴの多様な生き方を育む（東京大学、京都大学、三重大学、ノースカロライナ大学） www.a.u-tokyo.ac.jp/topics/topic... ｜「森や川といった生態系の季節的なつながりが、生物多様性の一つである種内の多様性維持に貢献することを実証」「気候変動や人間活動が野生生物に及ぼす影響についても重要な知見をもたらす」
森と川の季節的なつながりがアマゴの多様な生き方を育む | 東京大学大学院農学生命科学研究科・農学部
森と川の季節的なつながりがアマゴの多様な生き方を育む
www.a.u-tokyo.ac.jp
May 21, 2025 at 3:19 AM
森と川の季節的なつながりがアマゴの多様な生き方を育む（東京大学、京都大学、三重大学、ノースカロライナ大学） www.a.u-tokyo.ac.jp/topics/topic... ｜「森や川といった生態系の季節的なつながりが、生物多様性の一つである種内の多様性維持に貢献することを実証」「気候変動や人間活動が野生生物に及ぼす影響についても重要な知見をもたらす」
Reposted by Ryota HASEGAWA
The wait is over!! Our Open Access @springernature.com book on Aquatic Parasitology was just published! 23 Chapters, 202 illustrations & 662pp with everything you ever wanted to know about the amazing world of marine & freshwater parasites. @berndsures.bsky.social link.springer.com/book/10.1007...
Aquatic Parasitology: Ecological and Environmental Concepts and Implications of Marine and Freshwater Parasites
A unique open access collection on ecological and environmental parasitology in marine and freshwater. Covers climate change and parasite conservation.
link.springer.com
May 17, 2025 at 12:42 PM
The wait is over!! Our Open Access @springernature.com book on Aquatic Parasitology was just published! 23 Chapters, 202 illustrations & 662pp with everything you ever wanted to know about the amazing world of marine & freshwater parasites. @berndsures.bsky.social link.springer.com/book/10.1007...
Reposted by Ryota HASEGAWA
xの投稿なのですが重要な件なので..
私と共著論文もあるIさん、1年前に麻布大学助教の職を採用後わずか２ヶ月で辞職させられた経緯を公表しています。この件につき、大学側に再調査の依頼をしたが却下されたとのことで、ネットでの実名公表に踏み切られました。
x.com/legendofhotd...
私と共著論文もあるIさん、1年前に麻布大学助教の職を採用後わずか２ヶ月で辞職させられた経緯を公表しています。この件につき、大学側に再調査の依頼をしたが却下されたとのことで、ネットでの実名公表に踏み切られました。
x.com/legendofhotd...
寄生虫戦士-モニジャ- on X: "退職日すら自分で決めさせてもらえず、赤が入ったこれを退職届とは思えていないよね。強要の証拠だと思って当時、大事に取っておいたんだけど、無意味だった。せめてこの２０日間があれば少しは考えることができたんだけど、、、。 https://t.co/Gg5vlieSCt" / X
退職日すら自分で決めさせてもらえず、赤が入ったこれを退職届とは思えていないよね。強要の証拠だと思って当時、大事に取っておいたんだけど、無意味だった。せめてこの２０日間があれば少しは考えることができたんだけど、、、。 https://t.co/Gg5vlieSCt
x.com
April 19, 2025 at 2:31 AM
xの投稿なのですが重要な件なので..
私と共著論文もあるIさん、1年前に麻布大学助教の職を採用後わずか２ヶ月で辞職させられた経緯を公表しています。この件につき、大学側に再調査の依頼をしたが却下されたとのことで、ネットでの実名公表に踏み切られました。
x.com/legendofhotd...
私と共著論文もあるIさん、1年前に麻布大学助教の職を採用後わずか２ヶ月で辞職させられた経緯を公表しています。この件につき、大学側に再調査の依頼をしたが却下されたとのことで、ネットでの実名公表に踏み切られました。
x.com/legendofhotd...
Examining the correlation between body condition and parasite infections is a common approach for identifying the negative effects of parasites, but causality is unknown (parasites reduced body condition? poor body condition caused infections?)(continued).
April 11, 2025 at 1:20 AM
Examining the correlation between body condition and parasite infections is a common approach for identifying the negative effects of parasites, but causality is unknown (parasites reduced body condition? poor body condition caused infections?)(continued).
Reposted by Ryota HASEGAWA
Does the host matter? Testing the impact of host identity on the microbiome of a trematode parasite
doi.org/10.1007/s004...
doi.org/10.1007/s004...
Does the host matter? Testing the impact of host identity on the microbiome of a trematode parasite - Parasitology Research
Animal microbiomes have been recognized to have significant impact on animal behaviour, development, and health. For parasites, one of the sources of their associated microbes is likely their hosts, m...
doi.org
April 2, 2025 at 2:34 AM
Does the host matter? Testing the impact of host identity on the microbiome of a trematode parasite
doi.org/10.1007/s004...
doi.org/10.1007/s004...
Reposted by Ryota HASEGAWA
To bin or not to bin: why parasite abundance data should not be lumped into categories for statistical analysis
doi.org/10.1017/S003...
doi.org/10.1017/S003...
To bin or not to bin: why parasite abundance data should not be lumped into categories for statistical analysis | Parasitology | Cambridge Core
To bin or not to bin: why parasite abundance data should not be lumped into categories for statistical analysis
doi.org
March 27, 2025 at 10:34 PM
To bin or not to bin: why parasite abundance data should not be lumped into categories for statistical analysis
doi.org/10.1017/S003...
doi.org/10.1017/S003...
Reposted by Ryota HASEGAWA
トランプ大統領のゴルフ費用、すでに26億円超。納税者の負担に
トランプ氏は就任から48日のうち13日、自身が所有するゴルフ場を訪れています
www.huffingtonpost.jp/entry/story_...
トランプ氏は就任から48日のうち13日、自身が所有するゴルフ場を訪れています
www.huffingtonpost.jp/entry/story_...
トランプ大統領のゴルフ費用はすでに26億円超。納税者の負担に
大統領就任から48日のうち、トランプ氏がゴルフをしたのは13日になる
www.huffingtonpost.jp
March 10, 2025 at 3:55 AM
トランプ大統領のゴルフ費用、すでに26億円超。納税者の負担に
トランプ氏は就任から48日のうち13日、自身が所有するゴルフ場を訪れています
www.huffingtonpost.jp/entry/story_...
トランプ氏は就任から48日のうち13日、自身が所有するゴルフ場を訪れています
www.huffingtonpost.jp/entry/story_...
Reposted by Ryota HASEGAWA
Highly Threatened Status for the Relict Populations of Ectoparasitic Copepod Salmincola californiensis in Japan
doi.org/10.1002/aqc....
doi.org/10.1002/aqc....
Highly Threatened Status for the Relict Populations of Ectoparasitic Copepod Salmincola californiensis in Japan
Many species have been threatened over the past century because of anthropogenic disturbances. Parasites are among the most vulnerable groups because they rely on host organisms, many of which are no....
doi.org
March 2, 2025 at 9:16 PM
Highly Threatened Status for the Relict Populations of Ectoparasitic Copepod Salmincola californiensis in Japan
doi.org/10.1002/aqc....
doi.org/10.1002/aqc....
Our paper on the highly threatened population status of the parasitic copepod #Salmincola californiensis has been published in Aquatic Conservation. My first paper on parasite conservation!
onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com/doi/10.1002/...
Highly Threatened Status for the Relict Populations of Ectoparasitic Copepod Salmincola californiensis in Japan
Many species have been threatened over the past century because of anthropogenic disturbances. Parasites are among the most vulnerable groups because they rely on host organisms, many of which are no...
onlinelibrary.wiley.com
March 7, 2025 at 4:06 AM
Our paper on the highly threatened population status of the parasitic copepod #Salmincola californiensis has been published in Aquatic Conservation. My first paper on parasite conservation!
onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com/doi/10.1002/...
It was an exciting opportunity!
Thanks!! @chenhuali.bsky.social
Thanks!! @chenhuali.bsky.social
We had our first New Zealand event last Saturday! @chenhuali.bsky.social and our new volunteers presented the #ParasitologyBooth for the #BugDay2025 at the Tūhura Otago Museum @tuhura.bsky.social in Dunedin! Thanks for the event Connal McLean @zoologyotago.bsky.social and the NZ Entomological Soc!
February 19, 2025 at 9:36 AM
It was an exciting opportunity!
Thanks!! @chenhuali.bsky.social
Thanks!! @chenhuali.bsky.social