Sparial/temporal feeding strategies of pelagic copepod commonities

中上层桡足类共性的空间/时间进食策略

• 批准号: 10660180
• 负责人: OHTSUKA Susumu
• 金额: $ 2.24万
• 依托单位: Hiroshima University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10660180/
• 关键词: copepod; detritus; carnivore; phytoplankton; Tortanus; Macandrewella; Cephalophanes; harpacticoid; ハルパクチフス目; 甲殻類; 近底層; レンズ; Neocalanus; 性的二型; 珪藻類; 禍鞭毛藻類; 中海; Oithona

1. A neritic calanoid copepod Tortanus (Atortus), which is a carnivore feeding on small copepods such as Oithona, was observed forming swarms during the day. Their swarming may function, not only as an antipredation against visual predators such as fish, but also a foraging strategy to detect prey copepods.2. A deep-sea hyperbenthic calanoid copepod Macandrewella is a special detritivore utilizing crustacean carsasses and/or molts. The genus bears a medial cephalic lens which is rarely found in the family Scolecitrichidae, Another deep-sea calanoid Cephalophanes with much more developed and specialized optical sensors than in Macandrewella is also a detritivore feeding mainly on crustacean carcasses/molts. Considering their similar feeding habits and developed optical sensors, these organs may function in detecting bioluminescent bacteria inhabiting on crustacean detrital matter.3. Shallow-water demersal calanoid copepods such as Pseudodiaptomus and Pseudocyclops utilize benthic algae … More in addition to pelagic ones. A cavernicolous calanoid Ridgewayia stygia fed on crustacean remains.4. A deep-sea carnivorous catanoid Euaugaptilus bears special setae called "button setae" on the maxilla and maxilliped. The "button" may function as a shock absorber white their prey is struggling. The number, disposition and fine structure of the buttons vary among congeners.5. Pelagic harpacticoid such as Euterpina acutifrons, Microsetella norvegica and Aegisthus murconatus fed mainly on small algae ranging from 4 to 15 μm in largest dimension. In addition, A.mucronatus frequently fed on crustacean remains.6. Ratios of the maxillary and maxillipedal lengths to the body length are measured in 85 species of oceanic, neritic and brackish calanoid copepods. Only oceanic carnivores bear extremely elongate maxillae (>30% in Candaciidae) or maxillipeds (>40% in Euchaetidae and Chiridiella). The appendage elongation seems to guarantee effective capture of prey zooplankters in oligotrophic waters. However setal ornamentations on these mouthpart appendages greatly vary among these carnivores, suggesting that they employ different feeding modes to result in food segregation. Ratios of the maxilla and maxilliped in particle feeders fall within 5-15% and 10-40%, respectively. Less

1.一种浅海哲水蚤类桡足类Tortanus（Atortus），这是一种食肉动物的小型桡足类，如Oithona，在白天观察到形成集群。他们的群集功能，不仅作为一个antipreduction对视觉捕食者，如鱼类，但也觅食策略，以发现猎物桡足类。Macandrewella是一种利用甲壳类动物尸体和/或蜕皮的特殊食虫动物。该属带有一个内侧头状透镜，这是很少发现的家庭Scolecitrichidae，另一种深海哲水蚤Cephalophanes与更发达和专门的光学传感器比Macandrewella也是一个食蟹动物，主要以甲壳动物尸体/蜕皮喂养。考虑到它们相似的食性和发达的光学传感器，这些器官可能用于检测栖息在甲壳动物碎屑物质上的生物发光细菌。浅水底栖哲水蚤类桡足类，如Pseudodiaptomus和Pseudocyclops利用底栖藻类 ...更多信息 除了远洋的。一种以甲壳类动物为食的洞穴栖哲水蚤Ridgewayia stygia。真羽水蚤是一种深海肉食性的卡坦类，在其上颌骨和颚足上有一种特殊的刚毛，称为“纽扣刚毛”。“按钮”的功能可能是减震器白色白色他们的猎物是挣扎。同类物中钮扣的数量、配置和精细结构各不相同。浮游性钩虾类如尖额真虾（Euterpina acutifrons）、挪威小刚毛藻（Microsetella norvegica）和鼠形盾甲藻（Aegisthus murconatus）主要以4 ~ 15 μm的小型藻类为食。此外，拟尖吻阿童木经常以甲壳类动物为食。测量了85种大洋、浅海和半咸水哲水蚤类的上颌骨和上颌骨足长与体长的比值。只有海洋性食肉动物具有非常细长的上颌骨（在Candacidae中>30%）或上颌骨足（在Euchaetidae和Chiridiella中>40%）。附肢的伸长似乎可以保证在贫营养沃茨有效地捕获猎物。然而，这些食肉动物的口器附属物上的刚毛的分布差异很大，这表明它们采用不同的进食方式导致食物隔离。上颌骨和颚足的比例分别在5-15%和10- 40%之间。少

项目成果

大塚攻: "中海本庄工区内外における動物プランクトン群集の季節変動"Laguna(汽水域研究). 6. 73-87 (1999)

Osamu Otsuka：“Nakaumi-Honjo 建设区域内及周围浮游动物群落的季节性波动”Laguna（咸水研究）6. 73-87 (1999)。

Susumu Ohtsuka: "Taxonomy and feeding ecology of demersal calanoid copepods collected from Thailand"Proceedings of the tenth JSPS joint seminar on marine and fisher. Sciences. 133-147 (2000)

Susumu Ohtsuka：“泰国采集的底层桡足类的分类学和摄食生态学”第十届 JSPS 海洋和渔民联合研讨会论文集。

Hiroyuki Matoura: "Fine structure of the "button setae" in the deep-sea polagic copepods of the genes Euaugapfilus(Colanoida :Augaptilidae)"Morine Biology. 137. 339-345 (2000)

Hiroyuki Matoura：“Eauaugapfilus（Colanoida：Augaptilidae）基因的深海远洋桡足类动物中“纽扣刚毛”的精细结构”Morine Biology。

Ohtsuka, S., S.Putchakarn, K.Pinkaew & S.Chullasorn: "Taxonomy and feeding ecology of demersal calanoid copepods collected from Thailand."Proceedings of the Tenth JSPS joint seminar on Marine and Fishery Sciences. 133-147 (2000)

Ohtsuka, S.、S.Putchakarn、K.Pinkaew

Hiroyuki Matsuura: "Fine Structure of the "button setae" in the deep-sea polagic copepods of the genus Euaugaptilus (Calanoida : Augaptilidae)"Marine Biology. 137. 339-345 (2000)

Hiroyuki Matsuura：“深海 Polagic 桡足类 Euauugaptilus（Calanoida：Augaptilidae）中“纽扣刚毛”的精细结构”海洋生物学。