Very interesting, Henk. Thank you for the information and detail.
From my own observations of the mavortium on the southern High Plains, breeding is mainly stimulated by humidity rather than temperature - the mavortium will breed at almost any time of the year except during freezing weather. They have adapted to this routine because the southern High Plains are arid most of the year and breeding must be accomplished within a short time of rain fall. There is a real time limit because the temporary pools used for breeding will dry within 3 months of rainfall, often a month or more sooner. Rainfall significant enough to fill ponds only occurs a couple of times during a year.
I have some animals from a population of that race and I have a feeling that keeping them very dry for a month or two and then a sudden humidity/moisture increase would be enough to trigger breeding i.e. a lot less elaborate preparation would be necessary. This is an experiment I intend to try in the near future.
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