相关实验视频

Updated: Jan 15, 2026

Empirical, Metagenomic, and Computational Techniques Illuminate the Mechanisms by which Fungicides Compromise Bee Health
08:36

Empirical, Metagenomic, and Computational Techniques Illuminate the Mechanisms by which Fungicides Compromise Bee Health

Published on: October 9, 2017

10.2K

种群结构和巢成员如何塑造熊蜂的病原体模式

Jana Dobelmann1, Lena Wilfert1

  • 1Institute of Evolutionary Ecology and Conservation Genomics, University of Ulm, Ulm, Germany.

Molecular ecology
|October 14, 2025
PubMed
概括

岛上大黄蜂种群表明,高的遗传多样性并不能防止病原体. 相反,病原体在大黄蜂 (Bombus spp.) 中的流行率. 与殖民地密度和巢穴内的遗传相似性有关.

关键词:
熊熊蜂是什么意思 熊熊蜂是什么意思它们的密度是密度密度.遗传多样性 遗传多样性病原体是一种病原体.人口结构 人口结构.

更多相关视频

A 3D Printed Pollen Trap for Bumble Bee Bombus Hive Entrances07:19

A 3D Printed Pollen Trap for Bumble Bee Bombus Hive Entrances

Published on: July 9, 2020

5.9K
In Vitro Rearing of Solitary Bees: A Tool for Assessing Larval Risk Factors08:50

In Vitro Rearing of Solitary Bees: A Tool for Assessing Larval Risk Factors

Published on: July 16, 2018

8.6K

相关概念视频

Pollination and Flower Structure02:40

Pollination and Flower Structure

Flowers are the reproductive, seed-producing structures of angiosperms. Typically, flowers consist of sepals, petals, stamens, and carpels. Sepals and petals are the vegetative flower organs. Stamens and carpels are the reproductive organs.  
75.2K
Gene Flow02:39

Gene Flow

Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
37.4K
Inclusive Fitness00:57

Inclusive Fitness

Most altruistic behavior—in which one animal helps another at a cost to themselves—occurs between relatives. Scientists think these altruistic behaviors evolved because they increase the inclusive fitness of the animal providing help.
37.4K
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.
23.0K
Mutation, Gene Flow, and Genetic Drift01:09

Mutation, Gene Flow, and Genetic Drift

In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).
61.7K
What are Populations and Communities?00:30

What are Populations and Communities?

Overview
37.1K