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During mating male bushcrickets transfer large spermatophores, which have been demonstrated to play an important role in female nutrition and egg production. Until now only relatively unspecific substances such as water and proteins were known to be present within these spermatophores. We found that in the bushcricket Ephippiger zelleri the spermatophores contain substantial amounts of carotenoids (mainly lutein and zeaxanthin) that are also found in the eggs of this species. Carotenoids are well known for their positive effects on survival and reproduction in animals. This is the first example, to our knowledge, where such specific vitamin-like substances were found to be transferred from male to female during mating.

Carotenoids in the spermatophores of bushcrickets (Orthoptera: Ephippigerinae)