Japanese Journal of Benthology最新文献_第9页

The 3rd Asian Marine Biology Symposium 2017参加報告 2017第三届亚洲海洋生物学学术研讨会

Japanese Journal of Benthology Pub Date : 2018-08-31 DOI: 10.5179/benthos.73.64

{"title":"The 3rd Asian Marine Biology Symposium 2017参加報告","authors":"","doi":"10.5179/benthos.73.64","DOIUrl":"https://doi.org/10.5179/benthos.73.64","url":null,"abstract":"64 The 3rd Asian Marine Biology Symposiumが 2017年 11月 3~5日に熊本県立大学で開催されました.Asian Marine Biology Symposium(AMBS)は,各国の研究者が協力してアジアを取り巻く海洋環境の理解を深めることを目的としており,1年おきに開催されています.The 1st AMBSは 2012年にプーケット(タイ)で,The 2nd AMBSは 2014 年に済州(韓国)で開催されました.The 3rd AMBSは, 2016年熊本地震による困難のため開催が一年遅れましたが,本シンポジウムの委員長である堤裕昭先生をはじめとして多くの参加者の協力のもと無事開催されました. 本シンポジウムへは 7カ国(韓国,タイ,台湾,中国, 日本,フィリピン,ロシア)から 153名が登録し,口頭発表 60題,ポスター発表 74題が申し込まれました.発表分野は分類学,生態学,水産学など,生物はプランクトン, ベントス,ネクトンと幅広く扱い,大きな括りとして海洋生物学をテーマに発表が行われました.口頭発表とポスター発表ともに盛んな議論が行われ,発表の合間には参加各国のお菓子がふるまわれました. 私は第一回から AMBSに参加しており,The 1st AMBS は私にとって初めての国際学会であり,The 2nd AMBSでは地震と津波に関するテーマを特別なセッションで発表させていただきました.今回,私は “Population dynamics of Monocorophium insidiosum after the 2011 tsunami disturbance” というタイトルでドロクダムシ科端脚類 M. insidiosum(トンガリドロクダムシ)の個体群動態に関するポスター発表を行いました.本種は,個体群形成能力が非常に高く, 2011年に発生した津波攪乱後に卓越して出現しました. 予想以上に多くの方と議論することができ,とても有意義な時間を過ごすことができました. The 3rd AMBSでは新たに Asian Marine Biology Contribution Awardが設立され,今井一郎先生と Jae-Sang Hong先生が受賞され,キーノートとしてそれぞれの専門について講演していただきました.受賞者の一人である今井一郎先生とは懇親会でお話を伺うことができました.お酒が入っている中で水柱中と底泥中の微細藻類に関する数字と暗算の話を理解するのは大変でした.しかし,その内容は興味深く,私が研究対象としている多毛類や端脚類の餌生物としての微細藻類について改めて勉強しなおすきっかけとなり,とても良い刺激となりました.もう一人の受賞者である Hong先生は干潟の研究をされており,私はポスター発表で Hong先生とお話しすることができました.Hong先生は非常に熱心に生物を研究されている方で,以前別の会議でお会いした際に「近くでたくさん M. insidiosumが採れた」と話したところ会議の合間に二人で採集に出かけるほどでした. The 2nd AMBSに引き続き今回のシンポジウムでも学生の研究発表に対する賞が設けられ,口頭発表とポスター発ポスター会場にて.筆者の発表の様子.","PeriodicalId":325376,"journal":{"name":"Japanese Journal of Benthology","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123000940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Faunal and ecological aspects of aquatic oligochaetes (Annelida, Clitellata) in Japanese lakes 日本湖泊水生寡毛纲动物的区系和生态学特征

Japanese Journal of Benthology Pub Date : 2018-08-31 DOI: 10.5179/BENTHOS.73.12

A. Ohtaka

{"title":"Faunal and ecological aspects of aquatic oligochaetes (Annelida, Clitellata) in Japanese lakes","authors":"A. Ohtaka","doi":"10.5179/BENTHOS.73.12","DOIUrl":"https://doi.org/10.5179/BENTHOS.73.12","url":null,"abstract":"The faunal composition and ecology of aquatic oligochaetes(Annelida, Clitellata)in Japanese lakes have been summarized based on a literature survey. Since Annandale’s initial benthological research in Lake Biwa in 1915, aquatic oligochaetes in Japanese lakes were studied, mainly in terms of lake typology, until the 1970s. Subsequent taxonomic and faunal studies have recorded 40 oligochaete species belonging to five families in the profundal bottom of freshwater lakes on Japanese islands. The profundal forms are generally widely-distributed species, with parallel replacement with European species. A variant form of Branchiura sowerbyi, which is almost devoid of posterior gill filaments, is restricted to the profundal bottom in the North basin of Lake Biwa, and is the only unique representative of lake profundal oligochaetes in Japan. Limnodrilus hoffmeisteri and Tubifex tubifex were the most common oligochaete species in profundal bottoms, both occurring irrespective of the trophic status of the lake. Unique oligochaete compositions were found in the bottom of several deep and oligotrophic lakes in northern Japan, and often comprised subterranean species. The taxonomic position of Tubifex(Peloscolex)nomurai, which was described from deep profundal bottoms in Lake Tazawa, and became extinct in the 1940s has been discussed. The composition and abundance of oligochaete communities in Japanese dam-lakes are comparable to mesoand eutrophic natural lakes in Japan. Azoic zones occurred in four lakes owing to the acceleration of artificial eutrophication and global warming recently. Oligochaete diversity in Japanese lakes is poorly understood in littoral zones and brackish lakes, and taxonomic studies will reveal many additional species.","PeriodicalId":325376,"journal":{"name":"Japanese Journal of Benthology","volume":"284 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121490039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seasonal variation of the biomass of the marine oligochaete Thalassodrilides cf. briani in Fukuura Bay, Japan and its optimal culture conditions 日本福ura湾海洋少毛藻生物量的季节变化及其最佳培养条件

Japanese Journal of Benthology Pub Date : 2018-08-31 DOI: 10.5179/BENTHOS.73.57

K. Ito, Mana Ito, K. Ohta, K. Ohta, Takeshi Hano, N. Ohkubo, K. Mochida

{"title":"Seasonal variation of the biomass of the marine oligochaete Thalassodrilides cf. briani in Fukuura Bay, Japan and its optimal culture conditions","authors":"K. Ito, Mana Ito, K. Ohta, K. Ohta, Takeshi Hano, N. Ohkubo, K. Mochida","doi":"10.5179/BENTHOS.73.57","DOIUrl":"https://doi.org/10.5179/BENTHOS.73.57","url":null,"abstract":"We studied the environmental remediation of polluted marine sediments using annelids and demonstrated that aquatic annelids had a high potential to lower the concentration of pollutant chemicals. We investigated the seasonal variation of dominancy of a marine oligochaete Thalassodrilides cf. briani(Naididae), which has high tolerance to pollution, in the benthic community in Fukuura Bay, Ehime Prefecture, Japan. In addition, the growth rates of oligochaetes under different temperatures were examined in our laboratory to establish an efficient oligochaete culture system. In the field studies, we investigated annual changes in the abundance and biomass of the oligochaete from 2011 to 2014 in Fukuura Bay. Throughout the investigation period, T. cf. briani dominated more than 60% of the total abundance of benthic communities, except in the winter of 2013 and 2014, and reached 121,400 individuals/m in February 2012. From spring to summer, the average body weight per individual reached a maximum, and the proportion of mature individuals was the highest in summer. These results suggested that new generations of this species occur in summer. In the laboratory experiment, T. cf. briani was cultured at 15, 20, or 25°C , and the growth and maturity rates of individuals with egg sacs were measured. The growth and maturity rates cultured at 15, 20, and 25°C after 30 days were 130% , 138% , and 160% and 1% , 23% , and 71% , respectively. Therefore, we determined that temperatures between 20 and 25°C triggered T. cf. briani maturation, and culture at 25°C was the most effective for inducing maturation.","PeriodicalId":325376,"journal":{"name":"Japanese Journal of Benthology","volume":"225 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115593322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Information for contributors 投稿人信息

Japanese Journal of Benthology Pub Date : 2018-08-31 DOI: 10.5179/benthos.73.69

引用次数: 0

Classification of the genera that belong to the families Enchytraeidae Vejdovsky, 1879 and Propappidae Coates, 1986 (Annelida: Clitellata: Tubificidae) 1879年叶蝉科和1986年叶蝉科属的分类(节肢动物:叶蝉目:蝶科)

Japanese Journal of Benthology Pub Date : 2018-08-31 DOI: 10.5179/benthos.73.35

Takaaki Torii

{"title":"Classification of the genera that belong to the families Enchytraeidae Vejdovsky, 1879 and Propappidae Coates, 1986 (Annelida: Clitellata: Tubificidae)","authors":"Takaaki Torii","doi":"10.5179/benthos.73.35","DOIUrl":"https://doi.org/10.5179/benthos.73.35","url":null,"abstract":"To date, there is limited information on the taxonomic composition of enchytraeids in Japan. In this study, keys to and diagnoses for the genera of Enchytraeidae and Propappidae have been provided. The keys cover 25 terrestrial, marine, and freshwater genera that have been recorded and are potentially distributed in Japan, and some local or dubious genera were excluded. The major diagnostic characters used in the keys were as follows: 1. shape of the prostomium; 2. presence/ absence and location of dorsal pores; 3. shape and numerical pattern of chaetae; 4. shape and distribution of nephridia; 5. location of the dorsal blood vessel origin; 6. shape of the chloragocytes; 7. abrupt/gradual transition of the esophagus into the intestine, 8. presence/absence, shape, and position, and size of the esophageal appendages; 9. quantity, size, shape, and texture of the coelomocytes; 10. shape of the male funnel; 11. shape of the spermatheca and its attachment (or not) to the esophagus; 12. presence/absence, size, and shape of the testis sacs or seminal vesicles. In addition, the characters of each genus have been described.","PeriodicalId":325376,"journal":{"name":"Japanese Journal of Benthology","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116681535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The current state and prospects of the aquatic oligochaete research in Japan 日本水生寡毛藻研究现状与展望

Japanese Journal of Benthology Pub Date : 2018-08-31 DOI: 10.5179/BENTHOS.73.11

Mana Ito, A. Ohtaka, Takaaki Torii, K. Ito

引用次数: 0

Seasonal changes in short-neck clam (Ruditapes philippinarum) population and its controlling factors on Sashiki Tidal Flats 笹木滩涂短颈蛤种群的季节变化及其控制因素

Japanese Journal of Benthology Pub Date : 2018-08-31 DOI: 10.5179/BENTHOS.73.1

H. Tsutsumi, T. Nishioka, N. Kitagawa, Y. Fujiyoshi, Moriyuki Kozaki, Mitsuharu Yamamoto, Mutsuo Ichinomiya, Tomohiro Komorita

{"title":"Seasonal changes in short-neck clam (Ruditapes philippinarum) population and its controlling factors on Sashiki Tidal Flats","authors":"H. Tsutsumi, T. Nishioka, N. Kitagawa, Y. Fujiyoshi, Moriyuki Kozaki, Mitsuharu Yamamoto, Mutsuo Ichinomiya, Tomohiro Komorita","doi":"10.5179/BENTHOS.73.1","DOIUrl":"https://doi.org/10.5179/BENTHOS.73.1","url":null,"abstract":": Quantitative samplings of the macro-benthic communities were conducted on the sandy tidal ﬂats, Sashiki Tidal Flats, that face Yatsushiro Bay in Kumamoto Prefecture, to monitor the seasonal dynamics of the macro-benthic communities and the population dynamics of the short-neck clam, Ruditapes philippinarum . This clam is one of the most dominant species of the macro-benthic communities on the sandy tidal ﬂats of the Japanese coast. The larvae produced in the autumn breeding season settled on the tidal ﬂats between November and December. The density of the newly settled juveniles reached about 85,000 ind. m − 2 in January 2015, and 4,760 ind. m − 2 of the juveniles with shell length of 2 to 5 mm remained until April. However, the newly recruited cohort almost collapsed between May and June. The same phenomenon was observed on the tidal ﬂats in the spring of 2014. It was, therefore, one of the main reasons why the adult clams were sparse on the tidal ﬂats throughout the year. Our results suggest that the predation pressure caused by ray Hemitrygon akajei and gastropod Philine argentata was a major mortality factor that collapsed the clam population in spring. In spring, numerous dips were created by the rays on the tidal ﬂats. It is likely that the young spats newly recruited in the autumn breeding season are predated on by these predators by the spring of the next year.","PeriodicalId":325376,"journal":{"name":"Japanese Journal of Benthology","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114253285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Aquatic microdrile oligochaete fauna (Annelida, Clitellata) in paddy fields of Japan 日本水田水生微柄寡毛动物区系(环节动物，小柄动物)

Japanese Journal of Benthology Pub Date : 2018-08-31 DOI: 10.5179/BENTHOS.73.48

A. Ohtaka

引用次数: 1

投稿規定投稿规定

Japanese Journal of Benthology Pub Date : 2016-11-20 DOI: 10.5179/benthos.73.141

引用次数: 2

Business Report 商业报告

Japanese Journal of Benthology Pub Date : 2011-11-14 DOI: 10.5179/benthos.73.67

Skorczynska Sznajder, Hanna Teresa

引用次数: 0