Reproductive biology

Little is known about the reproductive biology of cubozoans. The life history includes a benthic stage, the polyp, which can reproduce asexually by budding, and a pelagic stage, the medusa. Eggs and sperm combine to form a ciliated larva (planula), which settles on the bottom and becomes a polyp. Unlike scyphozoans, cubozoan polyps do not undergo stro-bilation (asexual reproduction by division into body segments); rather, the entire polyp becomes the juvenile medusa. C. sivickisi uses spermatophores that can be stored by the female, and it has been hypothesized that female C. rastoni may collect sperm strands produced by the males. Other cubo-zoans may have internal fertilization as well, but most broadcast their gametes.

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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