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Related Concept Videos

Mate Choice01:20

Mate Choice

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Mate choice—the decision about whom to mate with—is a type of natural selection, since animals must reproduce to pass down their genes. Mate choice is also called intersexual selection because the behavior occurs between the sexes.
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Natural Selection and Mating Preferences01:06

Natural Selection and Mating Preferences

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The principle of natural selection posits that organisms better adapted to their environment are more likely to survive and reproduce. This principle is closely intertwined with mating preferences, a key aspect of sexual selection, which evolutionary psychologists believe is driven by instincts to propagate one's genes. Such instincts significantly influence mating behaviors and preferences between genders.
Females, due to their biological roles in conception, pregnancy, and nursing,...
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Genetics of Speciation02:16

Genetics of Speciation

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Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
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The Ratio of X Chromosome to Autosomes02:45

The Ratio of X Chromosome to Autosomes

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In most organisms, sex is determined by the ratio of X and Y chromosomes. However, in some organisms, such as Drosophila and C.elegans, sex is determined by the ratio of the number of X chromosomes to the number of sets of autosomes. The Y chromosome in Drosophila is active but does not determine sex. It contains genes responsible for the production of sperms in adult flies.  
Normal male Drosophila has a ratio of one X chromosome to two sets of autosomes. In contrast, normal female...
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Conservation of Small Populations02:04

Conservation of Small Populations

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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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Gene Flow02:39

Gene Flow

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Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
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Related Experiment Video

Updated: Dec 7, 2025

Using the FishSim Animation Toolchain to Investigate Fish Behavior: A Case Study on Mate-Choice Copying In Sailfin Mollies
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Using the FishSim Animation Toolchain to Investigate Fish Behavior: A Case Study on Mate-Choice Copying In Sailfin Mollies

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Deciphering genetic mate choice: Not so simple in group-housed conservation breeding programs.

Katherine A Farquharson1, Carolyn J Hogg1, Katherine Belov1

  • 1School of Life and Environmental Sciences Faculty of Science The University of Sydney Sydney Australia.

Evolutionary Applications
|October 2, 2020
PubMed
Summary

Mate choice in conservation breeding programs is complex. In Tasmanian devils, age significantly impacted breeding success, not genetic factors, suggesting mate choice is difficult to integrate into captive management.

Keywords:
DArTseqcaptive breedinggenetic compatibilitygenetic managementmajor histocompatibility complexsexual selection

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Area of Science:

  • Conservation genetics
  • Animal behavior
  • Wildlife management

Background:

  • Mate choice incorporation into conservation breeding can enhance reproduction and natural behaviors.
  • Genetic-based mate choice has varied impacts on genetic diversity management.
  • Assessing mate choice costs and benefits in captivity is crucial but challenging.

Purpose of the Study:

  • To investigate genetic-based mate choice mechanisms in captive Tasmanian devils.
  • To test hypotheses of heterozygous advantage, dissimilar mate advantage, and optimal genetic distance.
  • To evaluate the feasibility of integrating mate choice into realistic captive management.

Main Methods:

  • Utilized generalized linear mixed models and permutation approaches.
  • Analyzed breeding success in group-housed Tasmanian devils.
  • Employed 1,948 genome-wide SNPs and 12 MHC-linked microsatellites.

Main Results:

  • Nongenetic factors, particularly age, were the primary predictors of breeding success.
  • Younger females and older males showed higher breeding success.
  • No evidence of mate choice was detected under the tested genetic hypotheses.

Conclusions:

  • Mate choice integration into captive management may be more challenging than anticipated.
  • Non-genetic factors can override genetic influences on mate selection in group settings.
  • Further research in realistic captive contexts is needed, balancing detection time with genetic risks.