Haplopharyngida

<i>Haplopharynx</i>

Haplopharynx

Order of small, free living marine flatworms

Haplopharynx is a genus of small, free living marine flatworms found in the North Atlantic and the Mediterranean. It is the only genus in the monotypic family Haplopharyngidae.

Quick Facts Haplopharynx, Scientific classification ...

Species

The following species are recognized in the genus Haplopharynx:

Anatomy

Subterminal mouth leads to the simple pharynx, which subsequently continues as an intestine with terminal anal pore. A short retractable proboscis is present anteriorly to the pharynx. Variable number of glands producing rhabdites open at the surface of proboscis. Nervous system built similarly as in Macrostomida. Haplopharynx are hermaphroditic, with separate male and female gonopores. Male copulatory organ is equipped with hard, sclerotised stylet and set of needles.[1]

Reproduction and development

Copulation lead to the internal fertilization. Egg is entolecithal and show spiral cleavage pattern.

References

  1. [1]
    Karling, Tor G. (1965). "Haplopharynx rostratus Meixner (Turbellaria) mit den Nemertinen verglichen". Journal of Zoological Systematics and Evolutionary Research. 3 (1–2): 1–18. doi:10.1111/j.1439-0469.1965.tb00424.x.


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This article uses material from the Wikipedia article Haplopharyngida, and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.