相关实验视频

Updated: Jul 9, 2025

At-Risk Butterfly Captive Propagation Programs to Enhance Life History Knowledge and Effective Ex Situ Conservation Techniques
07:10

At-Risk Butterfly Captive Propagation Programs to Enhance Life History Knowledge and Effective Ex Situ Conservation Techniques

Published on: February 11, 2020

7.2K

测试选择性隔离假设:君主蝶首选隔离对自己来说毒性较小的植物防御,同时保持对其他植物的效力

Anurag A Agrawal1,2, Amy P Hastings1, Christophe Duplais3

  • 1Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, New York, USA.

Ecology letters
|November 29, 2023
PubMed
概括

国王蝶选择性地隔离乳草毒素,选择对自己有害的化合物. 这种策略减少了自我毒性,同时保持了对捕食者的防御,展示了对植物防御的进化适应.

关键词:
卡迪诺利德是心脏糖化物中的一种.化学生态化学生态学共同进化的共同进化乳草阿斯克莱皮亚斯阿斯克莱皮亚斯公主蝶达纳乌斯·莫尼拉斯封存是一种封存.

更多相关视频

Author Spotlight: Investigating the Tolerance of Cabbage Butterflies to Urban Pollutants08:08

Author Spotlight: Investigating the Tolerance of Cabbage Butterflies to Urban Pollutants

Published on: August 18, 2023

4.0K
Deploying Community Scientists to Conduct Nondestructive Genetic Sampling of Rare Butterfly Populations07:17

Deploying Community Scientists to Conduct Nondestructive Genetic Sampling of Rare Butterfly Populations

Published on: October 28, 2022

1.6K

相关概念视频

Frequency-dependent Selection01:21

Frequency-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.
22.0K
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.
16.3K
Types of Selection01:46

Types of Selection

Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...
40.5K
Speciation Rates01:07

Speciation Rates

Overview
21.2K
Conservation of Small Populations02:04

Conservation of Small Populations

Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less...
13.1K
What is Natural Selection?01:32

What is Natural Selection?

Natural selection is an evolutionary process in which individuals with survival-promoting traits reproduce at higher rates. These favorable traits become more common within a population or species. Naturally selected traits initially arise via random genetic mutations. In order for selection to occur, there must be variation within a population, the trait controlling the variation must be heritable, and there must be an evolutionary advantage for variation in the trait.
115.4K