関連する実験動画
Updated: Jun 20, 2026
07:12
Circadian Entrainment of Drosophila Melanogaster
Published on: June 3, 2020
アンテナの昼間時計は,移動するモナーク蝶の太陽コンパスの方向を調整する
Christine Merlin1, Robert J Gegear, Steven M Reppert
1Department of Neurobiology, University of Massachusetts Medical School, Worcester, MA 01605, USA.
Science (New York, N.Y.)
|September 26, 2009
まとめ
東北アメリカのモナーク蝶は,脳だけでなくアンテナも利用し,秋の移動中に時間補償による太陽コンパスナビゲーションを行います. アンテナの時計は,これらの感覚器官のための新しい機能を明らかにし,この指向に不可欠です.
科学分野:
- エントモロジー エントモロジー学
- 動物の行動 動物の行動
- クロノバイオロジーはクロノバイオロジーを用います.
背景:
- モナーク蝶 (Danaus plexippus) は長距離を移動する.
- ナビゲーションは,時間補償の太陽コンパスに依存しています.
- このメカニズムのための昼間の時計の位置は脳にあると仮定されました.
研究 の 目的:
- モナーク蝶の航海におけるアンテナの役割を調査する.
- サーカディアンクロックがモナークのアンテナに存在するかどうかを判断する.
- 太陽のコンパス方向化の主要なタイミングメカニズムを特定する.
主な方法:
- 移動する君主蝶の行動実験.
- アンテナの機能を操作した後の指向能力の観察.
- アンテナ内のクロックメカニズムの分析.
主要な成果:
- アンテナは,正確な時間補償された太陽コンパス方向化に不可欠です.
- サーカディアン時計は,君主蝶のアンテナで特定されました.
- アンテナ時計は,ナビゲーションの主要なタイミングメカニズムであるようです.
結論:
- アンテナは,君主蝶の移動航海において重要な役割を果たします.
- この研究は,昆虫のアンテナの新しい機能を明らかにしています.
- この発見は,他の種におけるクロック・コンパス相互作用に関する新しい研究への道を開く.
関連する概念動画
00:53Migration
Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
02:19Circadian Rhythms and Gene Regulation
The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent years,...
02:19Circadian Rhythms and Gene Regulation
The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent years,...
02:45Biological Clocks and Seasonal Responses
The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
01:47Osmoregulation in Insects
Malpighian tubules are specialized structures found in the digestive systems of many arthropods, including most insects, that handle excretion and osmoregulation. The tubules are typically arranged in pairs and have a convoluted structure that increases their surface area.
01:21Frequency-dependent Selection
When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.Positive Frequency-Dependent SelectionIn positive...