Breeding success of captive black turtles in an aquarium

  • Published source details Kawazu I., Maeda K., Fukada S., Omata M., Kobuchi T. & Makabe M. (2018) Breeding success of captive black turtles in an aquarium. Current Herpetology (formerly Acta Herpetologica Japonica 1964-1971 and Japanese Journal of Herpetology 1972-1999), 37, 180-186.


This study is summarised as evidence for the following.

Action Category

Breed reptiles in captivity: Sea turtles

Action Link
Reptile Conservation
  1. Breed reptiles in captivity: Sea turtles

    A study in 2015–2017 on Okinawa Island, Japan (Kawazu et al. 2018) found that a pair of black turtles Chelonia agassizii bred successfully two years after being moved into a shared enclosure, though hatching success was low. In 2017, a female produced five clutches of eggs, with an average of 45 eggs/clutch. Average hatching success for three clutches laid on land was 12% and incubation periods were 52–57 days. A further two clutches were laid in the water and all eggs were lost. A male and female turtle were acquired in 1999 and 2009 respectively. In 2015, they were both introduced to an outdoor tank (3.5 x 2.2 m) with an open water system. During the nesting season (May–August), the female was moved to a holding tank (17 x 11 x 2 m) that had an open water system and a sandy nesting area. Eggs were collected and moved to a hatchery, where sand temperatures ranged from 27–32°C.

    (Summarised by: William Morgan)

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