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Updated: Jul 4, 2025

Spotting Cheetahs: Identifying Individuals by Their Footprints
09:47

Spotting Cheetahs: Identifying Individuals by Their Footprints

Published on: May 1, 2016

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生态建模,生物地理和表型分析设置了老虎猫的超维空间,揭示了一种新物种

Tadeu G de Oliveira1,2,3,4, Lester A Fox-Rosales5,6, José D Ramírez-Fernández5,7

  • 1Departamento de Biologia, Universidade Estadual do Maranhão (UEMA), Campus Paulo VI, Av. Lourenço Vieira da Silva 1000, Jardim São Cristóvão, São Luís, Maranhão, 65055-310, Brazil. tadeu4@yahoo.com.

Scientific reports
|January 29, 2024
PubMed
概括

虎猫复合体,Leopardus tigrinus,使用生态和表型数据进行了重新评估,揭示了三个不同的群体:阴云,草原和大西洋森林虎猫. 这项研究强调了这些难以捉摸的猫类动物的显著范围减少.

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Behavioral Tracking and Neuromast Imaging of Mexican Cavefish14:58

Behavioral Tracking and Neuromast Imaging of Mexican Cavefish

Published on: April 6, 2019

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A Noninvasive Hair Sampling Technique to Obtain High Quality DNA from Elusive Small Mammals07:40

A Noninvasive Hair Sampling Technique to Obtain High Quality DNA from Elusive Small Mammals

Published on: March 13, 2011

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相关概念视频

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...
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Habitat Fragmentation02:31

Habitat Fragmentation

Habitat fragmentation describes the division of a more extensive, continuous habitat into smaller, discontinuous areas. Human activities such as land conversion, as well as slower geological processes leading to changes in the physical environment, are the two leading causes of habitat fragmentation. The fragmentation process typically follows the same steps: perforation, dissection, fragmentation, shrinkage, and attrition.
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Genetics of Speciation02:16

Genetics of Speciation

Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
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Speciation Rates01:07

Speciation Rates

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Ecological Niches02:02

Ecological Niches

All organisms have a position within an ecosystem. The complete set of living and nonliving factors—including food resources, climate, and terrain—that define the position of a given organism are collectively referred to as the organism’s ecological niche.
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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.
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