Bio-diversity of fish communities in Lake Tanganyika

坦噶尼喀湖鱼类群落的生物多样性

• 批准号: 10041178
• 负责人: KOHDA Masanori
• 金额: $ 11.39万
• 依托单位: Osaka City University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A).
• 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-10041178/
• 关键词: Bio-diversity, radiation; Fish community; Laterality; Cichlids; Adaptive; Competition, Reproduction; Mutualism; Field experiments; Morphology; Reproduction; 群集構造; 種間競争; 繁殖生態; 性淘汰; 種分化; 地理的変異; 群集生態学; 生理生態; 繁殖戦術

During the project period, field research on fish communities in Lake Tanganyika has been conducted as was planned. The fish census on the permanent quadrat gave further evidence on the stability where fish fauna, fish species and even the number of each species were quite similar not only during the study period but also the previous studies. Several field experiments conducted in rocky shores indicated that artificial disturbance on local fish had weak effect on the fauna. Artificial rocky bases made in shallow sandy bottom were colonized by several cichlids that were not restricted in rocky habitat, suggesting that long sandy beaches can operate geographical barriers on the distribution of rock dwelling fishes.Cichlids in this lake have laterality in body morph, and it is hypothesized that the frequency of laterality in fish of the same feeding groups fluctuates with 5-year cycle. The results of this project seemed to support the hypothesis, and the obtained data will indicate that prey-predator relationship will result in the fluctuation. Namely, minority advantage operate in this phenomenon : minor morph of a fish species receive less predation pressure than fish of majority morph.Reproductive ecologies on some littoral fishes have been conducted, including cichlids and catfishes. Biparetal care in catfishes, coorepative polyandry in a cichlid, piracy mating in monogamous substrater as analternative male mating tactic, have been revealed.

在项目期间，按计划进行了对坦any尼湖鱼类社区的实地研究。永久性四边形上的鱼普查提供了进一步的证据，证明了鱼类动物，鱼类，甚至每种物种的数量不仅在研究期间，而且在先前的研究中都非常相似。在岩石海岸进行的几项野外实验表明，对局部鱼类的人为干扰对动物区系的影响较弱。在岩石栖息地不受限制的几个酸裂骨上殖民的人造岩石基地被殖民了，这表明长沙滩可以在岩石住宅的分布上操作地理障碍。该湖中的岩石在身体变形中具有后卫，并且可以假设，在同一养育过程中，该频率是较晚的养育频率。该项目的结果似乎支持了假设，并且获得的数据将表明猎物prodenter的关系将导致波动。也就是说，在这种现象中，少数群体的优势与大多数形态的鱼类的捕食压力更小。在某些沿海鱼类上的生育生态相比，捕食压力较小。已经揭示了cat鱼中的双层护理，在一夫一妻制的cichlid，一夫多妻制的辅助配音中，作为肛门性男性交配策略。

项目成果

Takeshi Watanabe: "Lunar cyclic spawning of a mouthbrooding cichlid, Cyprichromis leptosoma, in Lake Tanganyika."Ichthyological Research. 47. 307-310 (2000)

Takeshi Watanabe：“坦噶尼喀湖中口孵丽鱼科鱼 Cyprichromis leptosoma 的月球周期性产卵。”鱼类学研究。

Haruki Ochi, Andrew Rositter, Yasunobu Yanagisawa: "The first record of a biparental mouthbrooding catfish."Journal of Fish Biology. 57. 1601-1604 (2000)

Haruki Ochi、Andrew Rositter、Yasunobu Yanagisawa：“双亲口育鲶鱼的首次记录。”鱼类生物学杂志。

Kazunori Matsumoto, Masanori Kohda: "Inter-population variations in the mating system of a substrate-breeding cichlid in Lake Tanganyika."Journal of Ethology. 16. 123-127 (1998)

Kazunori Matsumoto、Masanori Kohda：“坦噶尼喀湖基质繁殖慈鲷交配系统的种群间变异。”动物行为学杂志。

Masanori Kohda: "Coexistence of permanently territorial cichlids of the genus Petrochromis through male-mating attack."Environmental Biology of Fishes. 52. 213-242 (1998)

Masanori Kohda：“Petrochromis 属永久领地慈鲷通过雄性交配攻击共存。”鱼类环境生物学。

Masahide Yuma, Tetsuya Narita, Michio Hori, Takaki Kondo: "Food resources of shrimp-eating cichlid fishes in Lake Tanghanyika"Environmental Biology of Fishes. 52. 371-378 (1998)

Masahide Yuma、Tetsuya Narita、Michio Hori、Takaki Kondo：“唐哈尼卡湖中吃虾慈鲷的食物资源”鱼类环境生物学。