
%0 Journal Article
%A Rohde, K 
%A Watson, NA 
%T Ultrastructure of Spermiogenesis and Sperm of an Undescribed Species of Luridae (Platyhelminthes, Rhabdocoela)
%J Australian Journal of Zoology
%D 1993/02/01
%V 41
%N 1
%P 13-19
%K 
%R https://doi.org/10.1071/ZO9930013
%U https://www.publish.csiro.au/paper/ZO9930013 
%X Testis follicles of an undescribed species of Luridae (Dalyellioida) contain nurse cells with cytoplasmic processes branching between the spermatids. Spermatids elongate to form aflagellate and non-axonemal sperm containing an elongate nucleus, mitochondria and dense bodies. Up to 15 peripheral microtubules are longitudinally directed in mature sperm, but are arranged in a screw-like fashion in elongating spermatids. Non-axonemal sperm have evolved independently in species of several platyhelminth taxa: Monogenea, Prolecithophora, Dalyellioida, and Catenulida. 
