Stegostoma tigrinum egg hatch rate?

[ss88]

Excluding predation, any data on the hatch rate of Stegostoma tigrinum? What about the survival rate from 0-12 months. Assuming near optimal care.

Well aware of adult maximum size, display is over 10,000 gallons.

 

[ISpeakForTheSeas]

Excluding predation, any data on the hatch rate of Stegostoma tigrinum? What about the survival rate from 0-12 months. Assuming near optimal care.

Well aware of adult maximum size, display is over 10,000 gallons.

For captive bred, it seems the hatch rate is ~25% at the moment,* though sometimes the hatchlings are manually assisted in leaving the eggs: the 0-12 month mortality rate with near optimal care seems to be ~53% for males and ~59% for females.** This is supported by the estimated wild population first year survival/mortality rates in the first link as well (they estimated ~60% first year mortality in the wild).

*Source:

http://www.cbsg.org/sites/cbsg.org/files/documents/Zebra%20Shark%20PVA%20Final%20Report_May2021.pdf

**Source:

https://www.researchgate.net/profile/Max-Janse/publication/330936583_Reproduction_and_husbandry_of_zebra_sharks_Stegostoma_fasciatum_in_aquaria/links/5c5c6862299bf1d14cb33caa/Reproduction-and-husbandry-of-zebra-sharks-Stegostoma-fasciatum-in-aquaria.pdf

 

[ss88]

Thank you.