Fine structure of the spermatophores and their ejaculated forms, sperm reservoirs, of the Japanese common squid, Todarodes pacificus.

@article{Takahama1991FineSO,
  title={Fine structure of the spermatophores and their ejaculated forms, sperm reservoirs, of the Japanese common squid, Todarodes pacificus.},
  author={Hideki Takahama and Tsutomu Kinoshita and Michio Sato and Fumie Sasaki},
  journal={Journal of morphology},
  year={1991},
  volume={207 3},
  pages={
          241-251
        }
}
Spermatophores in a squid, Todarodes pacificus, were observed by light and electron microscopy and were further analyzed by X-ray microanalysis (XMA) of frozen thin sections. Each spermatophore consists of a sperm mass, a cement body, an ejaculatory apparatus, and some fluid materials, all of which are covered by an outer tunic. The outer tunic consists of about 20 membranous layers, each containing straight, parallel microgrooves. Each layer's microgroove pattern is roughly in an orthogonal… CONTINUE READING
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