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Fig. 9 | Zoological Letters

Fig. 9

From: Progesterone initiates tendril formation in the oviducal gland during egg encapsulation in cloudy catshark (Scyliorhinus torazame)

Fig. 9

Schematic diagram representing the egg-laying cycle of cloudy catshark. Note that oocyte maturation, ovulation, fertilization, and tendril/egg-capsule formation occur during approximately 5 days following the P4 surge. The present study revealed that P4 administration induces tendril formation. Following egg-laying, females can fertilize the next ovulated eggs using stored sperm without further mating

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Zoological Letters

ISSN: 2056-306X

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