1

People and ecosystems

Understanding of the links between coral reef ecosystems, the goods and services they provide to people, and the wellbeing of human societies.

2

Ecosystem dynamics: past, present and future

Examining the multi-scale dynamics of reefs, from population dynamics to macroevolution

3

Responding to a changing world

Advancing the fundamental understanding of the key processes underpinning reef resilience.

Coral Bleaching

Coral Bleaching

Coral Reef Studies

ARC Centre of Excellence for Coral Reef Studies
James Cook University Townsville
Queensland 4811 Australia

Phone: 61 7 4781 4000
Email: info@coralcoe.org.au

Menu Image Menu Image Menu Image Menu Image Menu Image Menu Image Menu Image
Menu
Facebook Twitter YouTube FlickR
Event

Repetitive sex change in a mushroom stony coral

When

Wednesday 8 April 2009, 12:00 pm

location
ARC Centre of Excellence Conference Room, JCU (DB44). Video-link to Centre for Marine Studies, UQ
Presenter
Professor Yossi Loya, Department of Zoology, Tel Aviv University, Israel

ABSTRACT:

Our knowledge of the various modes of sexual reproduction in stony corals has increased greatly during the last two decades, but is far from encompassing the wide variety of reproductive strategies exhibited by this group. Here, for the first time in stony corals, I report on sex change exhibited by two mushroom corals, Fungia repanda and Ctenactis echinata in Okinawa, Japan.

Sex change in animals has been reported as occurring from M-F (male to female i.e., protandry) and vice versa i.e., F-M (protogyny), but in a few cases also as bidirectional. While F. repanda exhibited protandry only, C. echinata revealed a repetitive mode of sex change, which greatly resembles that of dioecious plants that display labile sexuality in response to energetic and/or environmental constraints. I posit that, similar to these plants, in the studied corals sex change increases their overall fitness, reinforcing the important role of reproductive plasticity in scleractinian corals in determining their evolutionary success.

Seminars

More
Australian Research Council Pandora

Partner Research Institutions

Partner Partner Partner Partner
Coral Reef Studies

ARC Centre of Excellence for Coral Reef Studies
James Cook University Townsville
Queensland 4811 Australia

Phone: 61 7 4781 4000
Email: info@coralcoe.org.au