For a year, researchers in Sharm Ubhur
studied the sexual reproduction of the scleractinian corals Seriatopora hystrix
and Lobophyllia corymbosa. According to the researchers, S. hystrix is a
hermaphrodite brooder that develops its larvae inside of its polyps and
undergoes internal fertilisation. On the other hand, because the L. corymbosa
is a hermaphrodite broadcaster with exterior larval development, embryos are
not evident in histological studies. It was shown that S. hystrix has a short
reproductive season (January to April). The first planula larvae were found in
March at a temperature of 27.42°C, and the amount of eggs and testes seen
during this time was likewise modest. All year long, gonads from L. corymbosa
polyps were discovered, each with two oogenesis cycles and one spermatogenesis
cycle. The size of the S. hystrix egg varied from 158 mm (in January) to 241 mm
(in April). Observations of L. corymbosa eggs with the first discernible sizes
were made in August (187.2 mm) and April (689.96 mm). Zooxanthellae were
discovered in mature oocytes of S. hystrix. They were absent from L. corymbosa.
Author(s) Details:
Yahya A. M. Floos,
Department of Marine Biology & Fisheries, Faculty of Marine
Science & Environment, Hodiedah University, Yemen.
Abdulmohsin A. Al-Sofyani,
Department of Marine Biology, Faculty of Marine Science, King
Abdul-Aziz University, Saudi Arabia.
Talal A. Zari,
Department of Biology, Faculty of Science, King Abdul-Aziz
University, Saudi Arabia.
Please see the link here: https://stm.bookpi.org/RABS-V4/article/view/7590
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