Journal of Tropical Oceanography ›› 2017, Vol. 36 ›› Issue (1): 65-71.doi: 10.11978/2016044CSTR: 32234.14.2016044

• Orginal Article • Previous Articles     Next Articles

Sexual reproduction and early development of Platygyra carnosus

Baohua XIAO1,2(), Baolin LIAO2, Xiaodong YANG2, Ziqiang XIE3   

  1. 1. Guangdong Ocean University, Zhanjiang 524025, China
    2. Shenzhen Research Institute of Guangdong Ocean University, Shenzhen 518108, China
    3. Shenzhen Ocean Hyaline Marine Science and Technology Co., Ltd. Shenzhen 518108, China
  • Received:2016-04-28 Revised:2016-09-06 Online:2017-01-18 Published:2017-01-19
  • Supported by:
    Public Welfare Research and Capacity Building of Guangdong Province (K15216);Marine Fishery Science and Technology Promotion Project in Guangdong Province (A201308E02);Dapeng New District Development Projects (DPKJ201500080)

Abstract:

Sexual reproduction of Platygyra carnosus was observed preliminarily under the condition of artificial culture. Eggs and sperms of Platygyra carnosus were collected when they were spawned. The morphological characteristics in early development of Platygyra carnosus during different periods were recorded and described. The results showed that the corals were hermaphrodites, in vitro fertilization, and began spawning on the ninth day after the full moon,, then the spawning quantity of corals increased to the maximum on the 11th day after the full moon. The eggs of Platygyra carnosus were spherical in shape and pink in color. The early development process underwent five phases and 17 stages under the conditions of 27±0.5℃. The fertilized eggs developed into planula in 48 h and the larvae began to settle after 96 h. The sexual reproduction and early development of Platygyra carnosus were reported for the first time in China.

Key words: Platygyra carnosus, sexual reproduction, early development