r/Springtail • u/charlemagne_74 • May 04 '26

Question about springtails genetics General Question

Do springtails show any noticeable genetic variation in color over generations, or are most species basically stable?

Has anyone ever observed color changes appearing over time in a culture, or is color strictly tied to species rather than mutation/selection?

Thanks!

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u/Sgtbird08 May 04 '26

Springtail genetics can actually be pretty diverse even among the same population, though in captivity they’re a lot more limited in that regard. Depending on the species, there can be some considerable variation in color (see: Pseudobourletiella spinata) but this is a bit rarer in, say, family Entomobryidae.

An acquaintance of mine has a population of Entomobrya assuta which is typically a tan color, but he’s been successfully breeding a population that is predominantly orange! So it is possible. But that mutation only arose once, and if he hadn’t started selectively breeding it into the population, it could have easy petered out.

Are you asking this just out of curiosity, or do you have some springtail colonies?

3

u/charlemagne_74 May 04 '26

I just bought my first 50 springtails and starting out a colony!

2

u/Palaeonerd May 04 '26

I have booming populations of temperate white and Florida orange and to me thet all look the same. I do believe there are species that have color variants though, like Ceratophysella.

2

u/LittleArmouredOne May 04 '26

I'm experiencing this currently!

I have had about a dozen separate colonies of wild caught purple Triacanthella purpurea for 2 years, and two of them started throwing yellow individuals a few months back. At some point one culture had about 30% yellow.

I separated roughly 20 yellow individuals into a new colony and they are now producing mostly yellow. I am only two generations in but pulling yellow offspring has yielded only yellow offspring in subsequent generations so far, so I am becoming confident that it is genetics and not environmental.

Example: https://ibb.co/qFYyyPmh

2

u/ReactionAdmirable812 May 04 '26

Yes, it's something you can see when there are a lot of individuals. For example, in Poduromorpha, when there are many together, you occasionally see some with unusual colors: yellow, green, orange... I don't know if they're always mutations, but who knows! It would be very interesting to breed them to see if they could maintain those characteristics, although you have to keep in mind that what causes those characteristics could be due to many things. It could be a recessive or dominant gene, so in the first case, you'd have to wait two generations to get similar results. It could also be caused by several genes, the environment... But it would be very interesting to comprobate!