OFFERING TO SERIOUS BREEDERS

Pedigree strains bred towards aesthetic goals

in a scientifically informed fashion...

Swordtail Guppies 

Strains selected for: 

  • Longevity
  • Disease Resistance
  • Fertility
  • Natural Hardiness
  • Minimal Inputs
  • Intense Coloration
  • Moderate Size
  • Fluid Phenotypes comprised of complex Genotypes...

BRED AND RAISED BY aLAN s. bIAS

Genetic study:  BREEDING STRATEGIES & GENETIC

CONSEQUENCES IN GUPPIES


Guppies are unique in the vertebrate world.  They have been bred primarily for color and to a lesser degree shape over the last one hundred years.  In many instances with limited consideration for other valuable attributes commonly considered in the livestock world.  For this reason many strains lack survivability.


Contributions for many selected phenotypes (color & pattern) are predominantly sex-linked on the Y chromosome and not limited to autosomal genes. Or so it was thought.  Many recombine between X & Y chromosomes.  Current scientific and breeder theory indicates this may not be totally accurate.  We are finding that certain traits thought to be Y-linked are often enhanced or expressed in combination with autosomal components determining expression in independent zones of the body.


As a breeder we can manipulate gene frequencies by non random mating selection in conjunction with: genetic drift, mutation, or the domestic version of population migration in the form of individual acquisitions. It must be remembered that genetic variation can only come about via mutation in existing genes.

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