Interactions between crucian carp larva/fry growth and small organism community in paddy fields
| Project/Area Number |
21580243
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
General fisheries
|
|---|
| Research Institution | Lake Biwa Museum |
|---|
Principal Investigator |
OHTSUKA Taisuke 滋賀県立琵琶湖博物館, 研究部, 専門学芸員 (60344347)
|
|---|
| Co-Investigator(Renkei-kenkyūsha) |
FUJITA Yuko 京都大学, 基礎物理学研究所, 特別教育研究助教 (00324707)
MAEHATA Masayoshi 神戸学院大学, 人文学部, 教授 (30359260)
KUSUOKA Yasushi 滋賀県立琵琶湖博物館, 研究部, 専門学芸員 (80359265)
|
|---|
| Project Period (FY) |
2009 – 2011
|
| Project Status |
Completed (Fiscal Year 2011)
|
| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2011: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2010: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2009: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
|
|---|
| Keywords | ニゴロブナ / タマミジンコ / ユスリカ / 成長モデル / 水田 / 初期成長 / トップダウン栄養カスケード / von Bertalanffyの成長式 / 間接ボトムアップ / ミジンコ / 原生動物 / 植物プランクトン / 稲藁施用 |
|---|
| Research Abstract |
Crucian carp larvae showed rapid growth in paddy fields. The standard body length increased linearly except for the post-larva stages after they consumed cladocerans. This pattern suggests that the assimilation rate was usually much higher than the catabolic rate, and the food availa-bility was usually sufficient. Cladoserans were almost extinguished and ostracods were much decreased in experimental plots with fish. A top-down trophic cascade was observed, that is, microorganisms whose sizes correspond to the filtering mesh size of cladocerans became more abundant in the plots with fish than those without fish.
|
Report
(4 results)
Research Products
(17 results)
-
-
-
[Journal Article] Cascading effects of larval Crucian carp intro-duction on phytoplankton and microbial com-munities in a paddy field : top-down and bot-tom-up controls2011
Author(s)
Nishimura, Y., Ohtsuka, T., Yoshiyama, K., Nakai, D., Shibahara, F. & Maehata, M.
-
Journal Title
Ecological Research
Volume: 26
Issue: 3
Pages: 615-626
DOI
Related Report
Peer Reviewed
-
[Journal Article] The impact of nigorobuna(crucian carp) larvae/fry stocking and rice-straw application on the community structure of aquatic organisms in Japanese rice fields2010
Author(s)
Yamazaki, M., Ohtsuka, T., Kusuoka, Y., Maehata, M., Obayashi, H., Imai, K., Shiba-hara, F. & Kimura, M.
-
Journal Title
Fisheries Sciences
Volume: 76
Issue: 2
Pages: 207-217
DOI
NAID
Related Report
-
[Journal Article] The impact of nigorobuna (crucian carp) larvae/fry stocking and rice-straw application on the community structure of aquatic organisms in Japanese rice fields.2010
Author(s)
Yamazaki, M., Ohtsuka, T., Kusuoka, Y., Maehata, M., Obayashi, H., Imai, K., Shibahara, F., Kimura, M.
-
Journal Title
Fisheries Sciences 76
Pages: 207-217
NAID
Related Report
Peer Reviewed
-
-
-
-
-
-
-
-
-
-
-
-
