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ホーム > 研究発表

研究発表

What dose Calyptogena sp. move looking for? ~Behavior observation of Calyptogena sp. in rearing tank~

2018年09月 15th Deep-Sea Biology Symposium (ポスター発表)
Makoto Sugimura, Yuka Koyano, Yoshihiro Suzuki, Miku Ota, Takami Nobuhara, Yukiko Nagai, Takashi Toyofuku



What dose Calyptogena sp. move looking for?
~Behavior observation of Calyptogena sp. in rearing tank~

Makoto Sugimura(1), Yuka Koyano(1), Yoshihiro Suzuki(1), Miku Ota(2), Takami Nobuhara(2), Yukiko Nagai(2), Takashi Toyofuku(2)
 (1) Enoshima Aqurium
 (2) JAMSTEC

[ABSTRACTS] Deep-sea creatures found in chemosynthetic ecosystems are known to have unique trophic acquisition strategy with symbiotic bacteria. Many of these animals receive organic matter produced by intracellular symbiotic bacteria as their main energy source. At Enoshima Aquarium, we developed a chemosynthetic ecosystem tank system (Miyake et al, 2012) that simulating the seep environment in order to study and display deep-sea creatures of chemosynthetic ecosystem. In this study, Calyptogena sp. were collected using the ROV Hyper-Dolphin, operated by the R/V Shinseimaru of University of Tokyo/ JAMSTEC. Sampling site was off Hatsushima Island seep site in Sagami Bay at depths of 855m (35°00.9507 ‘N, 139°13.327’E) on 6th of May, 2016. Calyptogena sp. individuals were then housed in the chemosynthetic ecosystem tank at Enoshima Aquarium. To monitor the daily migration of individuals, we took time lapsed video every 3 minutes from the top of the tank in total of 484 hours 14 minutes. As the result of the observation, we found that Calyptogena sp. individuals moves intermittently, average moving distance of one move was about 3.22 cm/15 min, and the average moving speed was about 0.38 cm/min. On the surface of sediment in the tank, heterogeneously mat-like biofilm cover area considered to be caused by bacteria activity were formed in mosaic pattern and we observed Calyptogena sp. individuals tend to moves along with the outline of the discoloration region. In this biofilm cover area, 50 to 300 μmol of hydrogen sulfide was detected from sediment. From these facts, we inferred that Calyptogena sp. individuals are moving to adopt environmental change, exploring optimal living environments such as suitable level of hydrogen sulfide and condition of bacterial mats. In the future, we would like to investigate further relationship between behavior of clams and environmental condition in order to clarify the ecology of chemosynthetic Calyptogena sp.

アオウミガメ輸送時における保温方法の検討

水温制御によるアオウミガメの繁殖行動の変化

Experimental Captive Breeding and Exhibition of Post-Larvae "Shirasu" of the Japanese Anchovy Engraulis japonicus

What dose Calyptogena sp. move looking for? ~Behavior observation of Calyptogena sp. in rearing tank~

カタクチイワシの仔魚に認められたアミルウーディニウム症

藤沢メダカの野生復元に向けた取り組みについて

飼育下バンドウイルカにおける卵巣嚢腫治療の試み

新江ノ島水族館における豚丹毒菌感染症の最近の症例

「絶滅危惧種の寄生虫」イシガイ類のグロキディウムの宿主解明

魚類寄生虫を指標とした水質管理を目指して

相模湾の汽水域で確認されたカニ類 -特に北限産出となる希少種の記録について-

水族館と研究機関の連携および研究成果の効果的な展示方法と教育普及活動について

秋に放出された琵琶湖産ドブガイ属幼生の宿主魚類

Extracupsular lens extraction combined with Phacoemulsification and Aspiration for Bilateral Cataracts in an Adult South American Fur Seal(Arctocephalus australis)

「シラス展示」リニューアル

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江の島の潮間帯動物相‐Vll

ヒメヤマトオサガニ Macrophthalmus banzai Wada & Sakai, 1989の神奈川県からの産出記録

相模湾で初記録となるツルギエチオピア(スズキ目シマガツオ科)について

大型回遊魚シイラに対する安全なハンドリング方法の模索

なぎさの体験学習館における体験学習プログラムの実践例 ムーンジェリー ~クラゲが教えてくれること~

新江ノ島水族館における漂着物同定の取り組みについて

Blood biochemical changes in captive sea turtles

Rehabilitation of two sea turtles, rescued and released in Sagami Bay, Japan

タギリカクレエビの初期生活史と飼育方法

飼育下で観察されたシチヨウシンカイヒバリガイの運動について

有人潜水調査船しんかい2000を活用した連動プログラムについて

「ハガキにかこう海洋の夢コンテスト」を題材にした水族館における教育普及活動

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化学合成生態系生物の飼育と観察事例