Skip to main content

Free Content Sexual Reproduction in the Mediterranean Endemic Orange Coral Astroides Calycularis (Scleractinia: Dendrophylliidae)

Download Article:
(PDF 1,124.8 kb)


Astroides calycularis (Pallas, 1766) is a common endemic azooxanthellate scleractinian coral living in the southwestern Mediterranean Sea, generally in shaded habitats, below overhangs, or at cave entrances, from the surface to 50 m depth. The annual reproductive cycle of A. calycularis (gamete development in relation to environmental parameters, planulation timing, size at sexual maturity, fecundity, and sex ratio) was studied at Palinuro in the southern Tyrrhenian Sea (Italy) from April 2004 to September 2005. Colonies were gonochoric, were mature at 3–4 cm2 in area, and had a sex ratio of 1:1. Polyps were sexually mature at 3–4 mm length (maximum diameter of the oral disc), and the females brooded their larvae. The maturation of spermaries took 7 mo and that of oocytes took over 12 mo. The rate of gamete development increased significantly from November to March. Fertilization occurred from April to May, with planulation in June. Mature oocytes ranged from 400 to 1590 μm and planulae size was 1850 μm (oral–aboral axis). Seasonal variation in seawater temperature and photoperiod likely play an important role in regulating reproductive events. The amount of energy devoted to male gametogenesis (quantified by gamete index) was significantly higher than female gametogenesis. in relation to other dendrophylliids, A. calycularis presents an intermediate reproductive strategy on the r-K continuum.

Document Type: Research Article


Publication date: July 1, 2011

More about this publication?
  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • ingentaconnect is not responsible for the content or availability of external websites

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more