Ceratothoa verrucosa (Isopoda: Cymothoidae) Infection in the Buccal Cavity of Red Seabream Caught in Iyo-Nada, Western Japan, with Some Notes on Its Co-infection with Choricotyle elongata (Monogenea: Diclidophoridae)

doi:10.3147/jsfp.56.43

48 0 0 0 OA Ceratothoa verrucosa (Isopoda: Cymothoidae) Infection in the Buccal Cavity of Red Seabream Caught in Iyo-Nada, Western Japan, with Some Notes on Its Co-infection with Choricotyle elongata (Monogenea: Diclidophoridae)

著者: Tomomichi Ohtani Izumi Kawamoto Masamitsu Chiba Noriyuki Kurono Satoru Matsuoka Kazuo Ogawa
出版者: The Japanese Society of Fish Pathology
雑誌: 魚病研究 (ISSN:0388788X)
巻号頁・発行日: vol.56, no.2, pp.43-52, 2021-06-15 (Released:2021-07-02)
参考文献数: 24
被引用文献数: 1

Long-term parasitological surveys were conducted on the isopod Ceratothoa verrucosa infecting red seabream Pagrus major caught in Iyo-Nada, Ehime Prefecture during the period of 2003–2007. The isopods were almost always in a pair of a male and a female, attached to the buccal cavity wall. The earliest infection occurred when seabream was 0+ year-old and the isopods grew as host fish grew. Prevalence of infection ranged from 12.2% to 21.2% when the host was 0+ to 5-year-old and decreased to 3.4% at 6-year-old and no infection among 7-year-old and older fish. These results suggest that infection was established when the host was 0+ year-old, and their life span of C. verrucose was estimated to be up to 6 years. Infected fish sometimes showed deformation in the upper jaw and growth retardation, but there was no evidence of infection-related mortality. The main reproduction season of the isopod was in summer, estimated by the presence of manca larvae in the marsupium of the female. Sometimes the monogenean Choricotyle elongata attached to the pleotelson of C. verrucosa. Prevalence and abundance of the monogenean were higher in the hyperparasitized seabream than in the fish without isopod infection, suggesting that the isopod favored the monogenean infection.

2024-01-09 18:04:58
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あと、マダイが死ぬまでタイノエは夫婦で寄り添い続ける、と動画で解説されていたけど先行研究から、マダイよりは寿命が短く、6年ぐらいだろうと推測されています。 Ohtani et al. 2021 ↓ https://t.co/HdDdN43APH https://t.co/sBtg6vmGf8

1 @coward19991114

@Aunb76DEKYSjaM9 おそらくツノザメ類よりオオウオノエの寿命が短いためです。サイズや年齢ごとの寄生率を調べると面白そうです。ちなみにタイノエの寿命は最長で約6年であることが過去の研究でわかっています。 https://t.co/0npmF0qzzk

1 @yukinko_2308

論文はこちら。4/4 https://t.co/L9oyyv3FSH

1 @s_daiyojyouhan

8 @Fish_Worms_Lab @ChobiChan7 @takasagokirara @tankan_no @RhinogobiusS @Dosanko_Iwk @en_chou @s_daiyojyouhan

タイノエの生活史や宿主への病害性について、最新の知見をこちらの論文に書きました。 J-STAGE Articles https://t.co/43WG7UCaof

2 @Cymothoa_sp @s_daiyojyouhan

論文が出ました！日本産ウオノエ科のなかで最も高い知名度を持ちながらその生態がよくわかっていなかったタイノエについて、愛媛県伊予灘で2003年から2007年に漁獲されたマダイ4623尾における寄生状況を調査し、タイノエの生活史や宿主への病害性について調べました。 https://t.co/43WG7UCaof

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48 0 0 0 OA Ceratothoa verrucosa (Isopoda: Cymothoidae) Infection in the Buccal Cavity of Red Seabream Caught in Iyo-Nada, Western Japan, with Some Notes on Its Co-infection with Choricotyle elongata (Monogenea: Diclidophoridae)

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Twitter (48 users, 57 posts, 155 favorites)

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