[Coral-List] re: Palythoa/zoanthid bleaching

dustin kemp dustykemp2 at hotmail.com
Tue Sep 13 10:56:39 EDT 2005

   Regarding  the discussion on Palythoa bleaching:  Our work on Palythoa
   caribaeorum  from  three  regions  in  south  Florida (Palm Beach, Ft.
   Lauderdale  and  Lower  Florida  Keys)  showed  that  colonies  of  P.
   caribaeorum  (sampled  at  3-5 m) associate with Symbiodinium types C1
   and/or  D1a.   Experimental  bleaching results revealed no significant
   difference  in  released  algae  based  on symbiont type, but did show
   significant  algae  release  based  on  region.  The work is currently
   submitted and in review.

   Cheers, Dusty

   Dustin Kemp  M.S.
   Institute of Ecology
   University of Georgia
   Athens, GA  30602
   dkemp1 at uga.edu

     From:  "Jaap, Walt" <Walt.Jaap at MyFWC.com>
     To:  "James Reimer"
     <jreimer at jamstec.go.jp>,<Coral-List at coral.aoml.noaa.gov>
     Subject:  RE: [Coral-List] re: Palythoa/zoanthid bleaching
     Date:  Tue, 13 Sep 2005 08:20:21 -0400
     >In  the  region  of  the  Florida  Keys to as far north as Stuart,
     Florida  (24.4 to 27.1 N latitude) Palythoa is a common constituent
     of  the shallow reefs.  Since the 1970s, when seawater temperatures
     approach  30  degrees C, Palythoa becomes pale yellow to white.  It
     often  times  retracts the polyps to the point that they are hardly
     visible.  It  is one of the first sentinels of a bleaching episode.
     When  temperatures  exceed  31 degrees C, it turns ghost white.  We
     tend  to  refer  to  the  common  species in our region as Palythoa
     mammillosa,  please  see:  Cairns,  S.A.,  et al., 2002. Common and
     scientific  names  of  aquatic invertebrates from the United States
     and  Canada:  Cnidaria  and  Ctenophora.  Second  Edition. American
     Fisheries Society. Special Publication 28. 115 pages.
     >-----Original Message-----
     >From:                       coral-list-bounces at coral.aoml.noaa.gov
     [mailto:coral-list-bounces at coral.aoml.noaa.gov]  On Behalf Of James
     >Sent: Monday, September 12, 2005 9:03 PM
     >To: Coral-List at coral.aoml.noaa.gov
     >Subject: [Coral-List] re: Palythoa/zoanthid bleaching
     >Dear Dr. Pecheux and coral-listers,
     >Regarding   your  comments  on  Palythoa  bleaching,  just  a  few
     observations  (mostly  anecdotal) for you. From what I have seen in
     southern  Japan,  Palythoa  spp. seem to vary quite a bit even from
     week  to  week  in  color  - often with "patchy" bleaching or whole
     colony bleaching in summer, with no regular or obvious distribution
     to  the  bleaching  (i.e.  depth,  lighting  etc.).  However, these
     colonies  always  seem to recover. Palythoa in the Indian Ocean had
     been  shown  to  be flexible in their association with Symbiodinium
     (see  Burnett 2002), so maybe that is affecting what I have seen in
     the  Pacific. The other observation of note is that (at least in s.
     Japan)  Palythoa  spp.  live  much higher up in the intertidal zone
     than  almost  any  coral or zoanthid I have seen, and in tide pools
     where summer water temperatures regularly exceed 40C  - and seem to
     be  thriving.  I would guess there is some kind of flexibility with
     symbionts allowing this..
     >  Anyways,  would  be  interested  to  hear about what others have
     >James Reimer
     >JSPS Fellow
     >Marine Ecology and Biology Research Program JAMSTEC
     >2-15 Natsushima
     >Yokosuka, Japan
     >e-mail: jreimer at jamstec.go.jp
     >Message: 2
     >Date: Sat, 11 Sep 2004 07:18:35 +0200
     >From: Martin P?cheux <martin.pecheux at free.fr>
     >Subject: [Coral-List] Palythoa bleaching ?? and ascidians ????
     >To: coral-list at coral.aoml.noaa.gov
     >Message-ID: <41428AAA.C748985B at free.fr>
     >Content-Type:            text/plain;           charset=iso-8859-1;
     >         x-mac-creator="4D4F5353"
     >Dear divers,
     >Edwin  Ervin (email the 9/9/05)  mentions Palythoa caribbaeorum as
     bleaching in Puerto Rico. I had just prepared this email few days
     >I  did  not  read  a mention of bleaching of Palythoa spp. since a
     very  long  time.  In  the 1980s to around `1995, many publications
     quoted it as bleaching, and often the worst. Would it be a focus of
     observers  on  hard  corals?  or  are they less? or would have they
     adapted?  or  whatever  ? I attach some importance as they have the
     symbionts  in  the  ectoderm,  so  deducing  less O2 or O. radicals
     concentration,  shorter  CO2/HCO3  pathway,  in  particular  during
     bleaching  doldrum/low  water  agitation  time  (or could it be the
     reverse?). Even anecdotical reports are wellcome.
     >Also,  there  is still just one report of bleaching of prochordate
     Ascidians    (in    didemids),    symbiotic    with   the   strange
     "prokaryotic-eukaryotic"  Prochloron.  Would  some  body  have also
     observed it ? (in GOREAU, T. J., and HAYES, R. L., 1995. Coral reef
     bleaching  in  the  South  Central  Pacific during 1994. Coral Reef
     Initiative, US Dept.
     >State, Washington DC, USA. 201pp)
     >Thanks observers,
     >Dr. Martin Pêcheux
     >Institut des Foraminifères Symbiotiques
     >16,  rue  de  la  Fontaine  de  l'Espérance,  92160 Antony, France
     martin.pecheux at free.fr
     >+33(0) 8711 804 32
     >Publications   at  www.reefbase.org   in   which  Review  on  Reef
     Bleaching, 214p.
     >(Martin Pêcheux means King-Fishex. I am still not Web footed)
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