Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

The Fossil Record02:56

The Fossil Record

26.0K
The fossil record documents only a small fraction of all organisms that have ever inhabited Earth. Fossilization is a rare process, and most organisms never become fossils. Moreover, the fossil record only exhibits fossils that have been discovered. Nevertheless, sedimentary rock fossils of long-lived, abundant, hard-bodied organisms dominate the fossil record. These fossils offer valuable information, such as an organism's physical form, behavior, and age. Studying the fossil record helps...
26.0K
Predator-Prey Interactions02:39

Predator-Prey Interactions

19.5K
Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.
19.5K
Epiphytes, Parasites, and Carnivores02:40

Epiphytes, Parasites, and Carnivores

13.9K
Plants often form mutualistic relationships with soil-dwelling fungi or bacteria to enhance their roots’ nutrient uptake ability. Root-colonizing fungi (e.g., mycorrhizae) increase a plant’s root surface area, which promotes nutrient absorption. While root-colonizing, nitrogen-fixing bacteria (e.g., rhizobia) convert atmospheric nitrogen (N2) into ammonia (NH3), making nitrogen available to plants for various biological functions. For example, nitrogen is essential for the...
13.9K
What is Evolutionary History?02:35

What is Evolutionary History?

40.6K
Scientists record evolutionary history by analyzing fossil, morphological, and genetic data. The fossil record documents the history of life on Earth and provides evidence for evolution. However, both fossil and living organisms offer evidence that outlines Earth’s evolutionary history.
40.6K
What is Behavior?00:54

What is Behavior?

9.4K
Behaviors are actions that an organism engages in—they can be related to finding food, reproducing, defending against threats, and many other possible actions. Behaviors include activities related to the environment around the animal—such as migration—as well as social interactions within a species or population. Many behaviors involve motor output—that is, muscle movements—while others involve less visible actions, such as learning.
9.4K

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Hatchlings of <i>Tyrannosaurus rex</i> and the Evolution of Dinosaur Reproductive Strategies.

Biology·2026
Same author

Paleotribological models using preserved fossil tissue properties reveal functional significance of Eurasian mammoth dental evolution.

Acta biomaterialia·2026
Same author

Arctic ecosystems shaped mammalian dispersal and diversification before the Cretaceous-Paleogene mass extinction.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Decoupled phenotypic constraints framed by respiratory adaptation in the rise of land vertebrates.

Science advances·2026
Same author

Evaluating variation in Solnhofen avialans.

Biology letters·2026
Same author

"It's about better doctors": exploring the purpose, structure, and function of competency committees in medical school.

Academic medicine : journal of the Association of American Medical Colleges·2026

関連する実験動画

Updated: Sep 29, 2025

Behavioral Tracking and Neuromast Imaging of Mexican Cavefish
14:58

Behavioral Tracking and Neuromast Imaging of Mexican Cavefish

Published on: April 6, 2019

7.9K

肉食恐竜の水中採食

Matteo Fabbri1, Guillermo Navalón2,3,4, Roger B J Benson5

  • 1Negaunee Integrative Research Center, Field Museum of Natural History, Chicago, IL, USA. mfabbri@fieldmuseum.org.

Nature
|March 24, 2022
PubMed
まとめ

スピノサウルスの恐竜は水生特異種で 初期の白亜紀の水環境に適応していたことが 新しい研究で明らかになりました この発見は 鳥類以外の恐竜とその陸上の生活様式に関する 過去の信念に 異議を唱えるものです

さらに関連する動画

Assaying Predatory Feeding Behaviors in Pristionchus and Other Nematodes
06:27

Assaying Predatory Feeding Behaviors in Pristionchus and Other Nematodes

Published on: September 4, 2016

10.0K
A Real-Time Interactive System for Studying Confrontational Pursuit Behavior in Rodents
06:25

A Real-Time Interactive System for Studying Confrontational Pursuit Behavior in Rodents

Published on: May 16, 2025

652

関連する実験動画

Last Updated: Sep 29, 2025

Behavioral Tracking and Neuromast Imaging of Mexican Cavefish
14:58

Behavioral Tracking and Neuromast Imaging of Mexican Cavefish

Published on: April 6, 2019

7.9K
Assaying Predatory Feeding Behaviors in Pristionchus and Other Nematodes
06:27

Assaying Predatory Feeding Behaviors in Pristionchus and Other Nematodes

Published on: September 4, 2016

10.0K
A Real-Time Interactive System for Studying Confrontational Pursuit Behavior in Rodents
06:25

A Real-Time Interactive System for Studying Confrontational Pursuit Behavior in Rodents

Published on: May 16, 2025

652

科学分野:

  • 古生物学
  • 脊椎動物学
  • 進化生物学

背景:

  • 二次的な水生適応は,陸上の脊椎動物で30回以上独立して進化した.
  • 非鳥類の恐竜は長い間例外と考えられ,水生生物の種はほとんどなかったが,証拠は論争の的だった.
  • 絶滅した動物における 明確な水生適応を特定することは 困難です

研究 の 目的:

  • 骨の密度を用いて絶滅した種の水生生物の習慣を推論する 信頼できる方法を確立する.
  • 非鳥類の恐竜,特にスピノサウリドの水生適応の流行を調査する.
  • 水中のスピノサウリドの生態学的多様性を 探求するためです

主な方法:

  • 骨密度と水生生態系との関係を分析する.
  • 非鳥類の恐竜の化石の証拠を評価するために,この骨密度推論法を適用します.
  • 他の水生爬虫類や哺乳類のパターンと 比較した結果です

主要な成果:

  • 骨密度の増加と水生生活習慣の強い相関は,現存する種で確認された.
  • スピノサウリドは 骨密度が著しく増加し 水生生物に適応したことを示している.
  • スピノサウルスの生態学的多様性は,水中の餌探し (スピノサウルス,バリオニックス) と潜水しない習慣 (スコーミムス) を含む.

結論:

  • 絶滅した脊椎動物の水生生活習慣の 信頼できる指標として機能しています
  • スピノサウリドは水生生物の専門家で 初期の白亜紀に これらの適応を進化させました
  • スピノサウリドの水生適応は,他の水生脊椎動物のパターンを反映した,より明白な解剖学的変化に先立ちました.