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関連する概念動画

Gastrulation01:56

Gastrulation

Gastrulation establishes the three primary tissues of an embryo: the ectoderm, mesoderm, and endoderm. This developmental process relies on a series of intricate cellular movements, which in humans transforms a flat, “bilaminar disc” composed of two cell sheets into a three-tiered structure. In the resulting embryo, the endoderm serves as the bottom layer, and stacked directly above it is the intermediate mesoderm, and then the uppermost ectoderm. Respectively, these tissue strata will form...
Migration00:53

Migration

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.
Optimal Foraging00:48

Optimal Foraging

How animals obtain and eat their food is called foraging behavior. Foraging can include searching for plants and hunting for prey and depends on the species and environment.
Predator-Prey Interactions02:39

Predator-Prey Interactions

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.Although predation is commonly associated with carnivory, for...
Epiphytes, Parasites, and Carnivores02:40

Epiphytes, Parasites, and Carnivores

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 biosynthesis of the...
Instinctive Drift01:05

Instinctive Drift

Instinctive drift refers to the tendency of animals to revert to their innate behaviors despite repeated reinforcement. Breland and Breland demonstrated this concept in an experiment with a raccoon. The raccoon was trained to pick up two coins and place them in a container in exchange for food. Initially, the raccoon learned to associate the coins with food, making them a conditioned stimulus or a substitute for food. However, over time, the raccoon became less willing to put the coins into the...

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関連する実験動画

Updated: Jun 24, 2026

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

リバースダイアル垂直移動:無脊椎動物捕食者から逃れるための脱出

M D Ohman, B W Frost, E B Cohen

    Science (New York, N.Y.)
    |June 24, 1983
    PubMed
    まとめ
    この要約は機械生成です。

    海のコペポッドであるPseudocalanus sp.は,この種に属している. ダボブ湾では,垂直移動を逆行させ,捕食者を避けるようにしています. この捕食者回避は死亡率を低下させ,潜在的に移住コストを克服します.

    さらに関連する動画

    Behavioral Tracking and Neuromast Imaging of Mexican Cavefish
    14:58

    Behavioral Tracking and Neuromast Imaging of Mexican Cavefish

    Published on: April 6, 2019

    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

    関連する実験動画

    Last Updated: Jun 24, 2026

    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

    Behavioral Tracking and Neuromast Imaging of Mexican Cavefish
    14:58

    Behavioral Tracking and Neuromast Imaging of Mexican Cavefish

    Published on: April 6, 2019

    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

    科学分野:

    • マリン・バイオロジーの海洋生物学
    • 動物プランクトン生態学
    • 行動生態学は,行動生態学である.

    背景:

    • ディエル垂直移動 (DVM) は,海洋動物プランクトンに共通しています.
    • プセドコラヌス (Pseudocalanus sp.) とは ダボブ湾の動物は非典型の逆DVMを示しています.
    • 夜間の無脊椎動物捕食者は,同じ環境で通常のDVMを実行します.

    研究 の 目的:

    • Pseudocalanus sp.における逆DVMの生態学的影響を調査する.
    • 捕食動物を避ける行為がPseudocalanus sp.に与える影響を判断する. 生き残る. 生存する.
    • 熱グラデントを横断したDVMの人口学的影響を評価する.

    主な方法:

    • Pseudocalanus sp.の観察について そして捕食者の移住パターンです.
    • コペポッドと捕食者の間の空間的な重複分析.
    • 人口動態をモデル化するためのライフテーブル分析.

    主要な成果:

    • プセドコラヌス (Pseudocalanus sp.) とは 捕食動物は正常なDVMを示したが,捕食動物は逆DVMを示した.
    • Pseudocalanus sp. の間の空間的な重複が減少しています. そして捕食動物が観察されました.
    • 寿命表の分析によると,死亡率の16%減少はDVMのコストを相殺する可能性がある.

    結論:

    • Pseudocalanus sp. の反転型DVMは,Pseudocalanus sp. に見られるようになった. 捕食を最小限に抑えるための戦略です.
    • 捕食動物を避けることは,成人雌のPseudocalanus sp.の生存率を大幅に高めます.
    • 減少した死亡率による人口学的利益は,熱グラデーションを横断して移住するエネルギーのコストを上回る可能性があります.