Fabrizia Ronco1, Michael Matschiner2,3,4, Astrid Böhne2,5

  • 1Zoological Institute, Department of Environmental Sciences, University of Basel, Basel, Switzerland. fabrizia.ronco@unibas.ch.

Nature
|November 19, 2020
PubMed
まとめ

タンガニカ湖のシチリドの適応放射線は 急速で特異的なパルスで多様化しています 種の豊かさはゲノム含有量ではなく ヘテロジゴシティと相関しており,進化の多様性についての洞察を提供している.

関連する概念動画

Speciation Rates01:07

Speciation Rates

Overview
22.3K
Hybrid Zones02:29

Hybrid Zones

Hybrid zones are narrow regions where two closely related species interact, mate, and produce hybrids. Relative to either parent species, hybrids may possess distinct phenotypic or genetic differences that impact their survival and reproductive success. The genetic variances introduced by hybridization influence species diversity and speciation processes within the hybrid zone.
21.4K
Fixed Action Patterns01:06

Fixed Action Patterns

A fixed action pattern (FAP) is a specific, hard-wired sequence of behaviors that occurs in response to an external stimulus, called a sign stimulus. The behavior is “fixed” because it is essentially unchangeable—proceeding similarly across individuals of a species every time it occurs.
17.0K
Osmoregulation in Fishes02:32

Osmoregulation in Fishes

When cells are placed in a hypotonic (low-salt) fluid, they can swell and burst. Meanwhile, cells in a hypertonic solution—with a higher salt concentration—can shrivel and die. How do fish cells avoid these gruesome fates in hypotonic freshwater or hypertonic seawater environments?
52.1K
The Evidence for Evolution02:55

The Evidence for Evolution

Genetic variations accumulating within populations over generations give rise to biological evolution. Evolutionary changes can result in the formation of novel varieties and entire new species. These changes are responsible for the diverse forms of life inhabiting the planet. The evidence for evolution suggests that all living organisms descended from common ancestors.
46.8K