[Coral-List] What eats Diadema?

randy clark randy.clark at noaa.gov
Mon Jan 11 09:14:27 EST 2010

Cool topic!

We did some gut content analysis of fish in La Parguera Puerto Rico and 
found these fish to have consumed Diadema:

saucereye porgy
southern stingray
white grunt


John Bruno wrote:
> There was an interesting email thread about Diadema predators that went around among a group of 20 or so reef ecologists during the holidays.  I just posted some of the highlights from the discussion and also some information on what eats Diadema from the classic Randall et al (1964) study of the biology of Diadema at ClimateShifts: http://www.climateshifts.org/?p=4188
> (It is sad how many of these discussions take place online, but off of the coral list and are thus not archived and the collective knowledge in them is not widely disseminated)
> Predators of Diadema appear to include: snapper, jacks, porcupinefishes, trunkfishes, grunts including black margate, porgies, triggerfishes, pufferfish, large wrasses, parrotfish, octopuses, lobsters, large gastropods and even small crabs (which eat juvenile Diadema).
> Does anyone have further information or observation on Diadema predators that they'd be willing to share with the coral list or as a comment on Climate Shifts?
> jb
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Randy Clark
Marine Biologist
CCMA Biogeography Branch
1305 East West Hwy
Silver Spring MD 20910
301-713-3028 x157

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