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Message: <blockquote data-quote="m0lsx" data-source="post: 226233" data-attributes="member: 29323">Stan, there is certainly an accepted (within the hobby,) higher instance of male to female among Theraphosa blondi & stirmi. The problem with academic research into % of male to female is that it would be long term & involve a significant number species &  a large number of egg sacks per species to be conclusive.  And it would probably not gain financial backing, as what use is it to academics, unless they know the logic behind what they see?It would need to look at what happens with say a T blondi with a small egg sack of around 100- 150. As opposed to something like an LP that produces as many as 2000 per egg sack. It would also need to find out if being terrestrial, fossorial or arboreal make a difference & what about continent or the weather within the T's geographic area. Does that make a difference?  Would for example, the extreme heat & flooding of Arizona produce a different need for reproduction among Arizona Blondes from Arizona, as opposed to an Aphonopelma, from states with more stable weather?   Both would be Aphonopelma, both from the same general geographic area, but different local conditions could produce different needs. I know in Australia, a species of snake living on an island, has evolved into what is accepted to be a different species, due to it needs within that environment.  Could % of male to female per egg sack be an evolutionary need? Or is the number of males to females we get from sling purchases just down to luck? I have seen several LP's from different sources, gained across a few years all turn out male & I wondered if others were seeing a similar pattern.</blockquote>

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