[Coral-List] Hawskbill turtles predating corals
Mohamed Eltayeb
mohamedeltayeb at hotmail.com
Tue May 20 07:07:02 EDT 2008
Hi david,
I have observed turtle feeding on Plerogyra spp. in the Sudanese Red Sea. Similar to your observations, feeding scars were apparent once the cause was recognised. I have it in DVD film showing it had the coral tissue in its mouth, and it bent down and took a bite from the coral.
Regards
Mohamed
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++Mohamed Mustafa Eltayeb, PhDMarine Program Officer
Marine Biodiversity and Conservation Science
IUCN- International Union for Conservation of Nature
WAME RO - West Asia/ Middle East Regional Office
Jeddah, Saudi Arabia
Mob: +966545308778
Mob: +962788232675
E-mail: mohamed.eltayeb at iucn.org
Web: www.iucn.org/wame
From: coral-list-request at coral.aoml.noaa.govSubject: Coral-List Digest, Vol 59, Issue 12To: coral-list at coral.aoml.noaa.govDate: Thu, 15 May 2008 09:51:15 -0400Send Coral-List mailing list submissions to coral-list at coral.aoml.noaa.gov To subscribe or unsubscribe via the World Wide Web, visit http://coral.aoml.noaa.gov/mailman/listinfo/coral-listor, via email, send a message with subject or body 'help' to coral-list-request at coral.aoml.noaa.gov You can reach the person managing the list at coral-list-owner at coral.aoml.noaa.gov When replying, please edit your Subject line so it is more specificthan "Re: Contents of Coral-List digest..."
--Forwarded Message Attachment--From: andrewharvey at xsmail.comSubject: Re: [Coral-List] Hawskbill turtles predating coralsDate: Mon, 12 May 2008 19:44:50 +0100To: coral-list at coral.aoml.noaa.govHi David, I have observed hawksbills feeding on Physogyra and Plerogyra spp. around Isle St Marie, Madagascar. Similar to your observations, feeding scars were apparent once the cause was recognised. I can't comment on the wide spread or long term impacts of this, though it would be interesting to find out. Perhaps others can confirm how common this behaviour is - I believe jellyfish are a known component of the diet and bubble coral seems like a reasonable substitute. Regards,Andrew > Subject:> [Coral-List] Hawskbill turtles predating corals> From:> David Obura <dobura at africaonline.co.ke>> Date:> Sat, 10 May 2008 22:14:53 +0300>> To:> "coral-list at coral.aoml.noaa.gov" <coral-list at coral.aoml.noaa.gov>>>> Hi all,>> While in Aldabra and Alphonse islands (Seychelles) I noted a> behaviour/effect of hawskbill turtles that I've never heard mentioned> before. I had noted dead patches/scars on a bubble coral in the genus> Physogyra that were widespread, though not covering a large proportion of> the coral. I was watching a hawksbill turtle swimming out from behind one of> these heads and noticed that it had tissue in its mouth, and it bent down> and took a bite from the coral. I then observed the same behaviour and> coral-scars on Alphonse.>> Has anyone reported hard coral tissue in hawksbill gut contents, or damage> to corals from turtle predation? I'm intrigued, as though the impact was not> huge to the corals, this was definitely a stable food source for the> turtles, and impact on the corals.>> Best,>> David Obura> CORDIO East Africa> 9 Kibaki Flats, Kenyatta Public Beach> P.O.BOX 10135 Mombasa 80101, Kenya> Tel/fax: +254-20-3548549; mobile 0733-851656> dobura at cordioea.org, dobura at africaonline.co.ke> -- *Andrew Harvey* ROYAL HASKONING LTD10 Bernard Street, Leith, Edinburgh, EH6 6PP, UKT: +44 77 1029 8522E: andrewharvey at xsmail.comskype: ah.harvey
--Forwarded Message Attachment--From: helenthereef at gmail.comSubject: Re: [Coral-List] Hawskbill turtles predating coralsCC: coral-list at coral.aoml.noaa.govDate: Tue, 13 May 2008 10:55:56 +1200To: allison.billiam at gmail.com; dobura at africaonline.co.keIn Fiji we've seen them grazing on silicaceous soft corals, Dendroneptheaand Chironepthea spp, but never noticed hard corals,Helen -----Original Message-----From: coral-list-bounces at coral.aoml.noaa.gov[mailto:coral-list-bounces at coral.aoml.noaa.gov] On Behalf Of William AllisonSent: Tuesday, May 13, 2008 12:26 AMTo: David OburaCc: coral-list at coral.aoml.noaa.govSubject: Re: [Coral-List] Hawskbill turtles predating corals Hi David,I observed this behaviour once in Maldives where I have also seen hawksbillsgrazing on false corals.Bill On Sat, May 10, 2008 at 3:14 PM, David Obura <dobura at africaonline.co.ke>wrote: > Hi all,>> While in Aldabra and Alphonse islands (Seychelles) I noted a > behaviour/effect of hawskbill turtles that I've never heard mentioned > before. I had noted dead patches/scars on a bubble coral in the genus > Physogyra that were widespread, though not covering a large proportion > of the coral. I was watching a hawksbill turtle swimming out from > behind one of these heads and noticed that it had tissue in its mouth, > and it bent down and took a bite from the coral. I then observed the > same behaviour and coral-scars on Alphonse.>> Has anyone reported hard coral tissue in hawksbill gut contents, or > damage to corals from turtle predation? I'm intrigued, as though the > impact was not huge to the corals, this was definitely a stable food > source for the turtles, and impact on the corals.>> Best,>> David Obura> CORDIO East Africa> 9 Kibaki Flats, Kenyatta Public Beach> P.O.BOX 10135 Mombasa 80101, Kenya> Tel/fax: +254-20-3548549; mobile 0733-851656 dobura at cordioea.org, > dobura at africaonline.co.ke>>> _______________________________________________> Coral-List mailing list> Coral-List at coral.aoml.noaa.gov> http://coral.aoml.noaa.gov/mailman/listinfo/coral-list>_______________________________________________Coral-List mailing listCoral-List at coral.aoml.noaa.govhttp://coral.aoml.noaa.gov/mailman/listinfo/coral-listNo virus found in this incoming message.Checked by AVG. Version: 8.0.100 / Virus Database: 269.23.16/1429 - Release Date: 12/05/200818:14
--Forwarded Message Attachment--From: tyoung at icran.orgSubject: Re: [Coral-List] Hawskbill turtles predating coralsDate: Tue, 13 May 2008 18:25:01 +0100To: coral-list at coral.aoml.noaa.govHi David, I have also frequently observed this behaviour with Hawksbills around thePhi Phi islands in Thailand. In some cases selective grazing was evidentwhere the turtle was observed moving between Physogyra colonies. Best-----------------------------------------------------------Terri YoungInternational Coral Reef Action Network (ICRAN)c/o UNEP WCMC219 Huntingdon RoadCambridge, CB3 0DLUnited Kingdom T: +44 1223 277314 xt: 269F: +44 1223 277 136Skype id: teripangtyoung at icran.orgwww.icran.org Today's Topics: 1. Re: Hawskbill turtles predating corals (William Allison) 2. Re: White spined diadema (Martin Moe) 3. Re: White-spined Diadema antillarum (Barbara Whitman) 4. Re: Coral bleaching in the western pacific warm pool. (Mark Eakin) ---------------------------------------------------------------------- Message: 1Date: Mon, 12 May 2008 08:25:39 -0400From: "William Allison" <allison.billiam at gmail.com>Subject: Re: [Coral-List] Hawskbill turtles predating coralsTo: "David Obura" <dobura at africaonline.co.ke>Cc: "coral-list at coral.aoml.noaa.gov" <coral-list at coral.aoml.noaa.gov>Message-ID: <1eab821b0805120525x63ca90abm1e72739ba45ce87b at mail.gmail.com>Content-Type: text/plain; charset=ISO-8859-1 Hi David,I observed this behaviour once in Maldives where I have also seen hawksbillsgrazing on false corals.Bill On Sat, May 10, 2008 at 3:14 PM, David Obura <dobura at africaonline.co.ke>wrote: > Hi all,>> While in Aldabra and Alphonse islands (Seychelles) I noted a> behaviour/effect of hawskbill turtles that I've never heard mentioned> before. I had noted dead patches/scars on a bubble coral in the genus> Physogyra that were widespread, though not covering a large proportion of> the coral. I was watching a hawksbill turtle swimming out from behind one> of> these heads and noticed that it had tissue in its mouth, and it bent down> and took a bite from the coral. I then observed the same behaviour and> coral-scars on Alphonse.>> Has anyone reported hard coral tissue in hawksbill gut contents, or damage> to corals from turtle predation? I'm intrigued, as though the impact was> not> huge to the corals, this was definitely a stable food source for the> turtles, and impact on the corals.>> Best,>> David Obura> CORDIO East Africa> 9 Kibaki Flats, Kenyatta Public Beach> P.O.BOX 10135 Mombasa 80101, Kenya> Tel/fax: +254-20-3548549; mobile 0733-851656> dobura at cordioea.org, dobura at africaonline.co.ke>>> _______________________________________________> Coral-List mailing list> Coral-List at coral.aoml.noaa.gov> http://coral.aoml.noaa.gov/mailman/listinfo/coral-list> ------------------------------ Message: 2Date: Mon, 12 May 2008 06:31:28 -0700 (PDT)From: Martin Moe <martin_moe at yahoo.com>Subject: Re: [Coral-List] White spined diademaTo: Robert Miller <rjmiller1 at gmail.com>, John Ware <jware at erols.com>Cc: coral-list at coral.aoml.noaa.govMessage-ID: <961181.54894.qm at web42105.mail.mud.yahoo.com>Content-Type: text/plain; charset=us-ascii On white spined Diadema,I've seen and collected numerous white spined Diadema. The cause andoccurrence of the white spines is not clear to me. I know that on the armsof the urchin, yes, they have arms, sort of. On the test there are 5triangular plates, the ambulacral plates, that are like the 5 arms of astarfish but as if they were folded up from the aboral pole and fused intothe spherical body. The tube feet of the urchin are located on the edges ofthese plates. The spines that originate on these ambulacral plates and thespines that originate from the interambulacrum areas are generallyindistinguishable during the day, but at night the spines on the 5ambulacral plates are usually white or whitish and give the urchin a sort ofstriped look. This the nocturnal color phase. Juveniles have spines withvariable dark and white ringed spines. From working with my brood stock, Igot the impression that it is the older individuals that seem to retain thenocturnal coloration during the day. In my brood stock I have two individuals that permanentlyretain white spines on the ambulacral plates, these two are males.... Butthere are other males that do not retain the nocturnal coloration. And Ihave collected some individuals with all brilliant while spines, from notparticularly deep in the reef, and with "normally" dark purple coloredindividuals in the same area. I have had individuals that were all white oncollection become dark after a time in the brood stock tank and some thatpermanently retain full or partial white coloration for a year ormore.Usually it is the larger (older?) individuals that exhibit partial ortotal white spines, but some smaller individuals also have this coloration.Also, the incident of white spined individuals seems to vary in differentareas of the reef. Some areas seem to have considerably more individualswith partial or full white spine coloration than other areas.So, basically, some Diadema, a relatively small percentage, have a permanentor long term, all or partial white spine coloration, and I don't know whythis is so..... Martin Moe ----- Original Message ----From: Robert Miller <rjmiller1 at gmail.com>To: John Ware <jware at erols.com>Cc: coral-list at coral.aoml.noaa.govSent: Saturday, May 10, 2008 1:34:00 PMSubject: Re: [Coral-List] White spined diadema Hi,Somewhere out there is an old study that showed, I believe, that juvenileDiadema that were raised in the dark were all white. Other studies haveshown, as John Ware says, that more white ones are found deeper and underrocks etc. Unfortunately I don't have the references now.good luck,Bob On Fri, May 9, 2008 at 10:06 AM, John Ware <jware at erols.com> wrote: > Stuart,>> I was hoping that someone who had firm knowledge would respond, because> my memory is old and feeble. Some 15 or 20 years ago I read a paper> (which I cannot recall or find) that stated that the white-spined D.a.> were more often found in low visibility environments. At least that is> my recollection.>> John>> Stuart P. Wynne wrote:>> >Dear all,> >> >> >> >I have been trying to find references to the white spined Diadema> >antillarum that I sometimes see in our waters here in Anguilla. As I am> >not privy to open access (but please let us not get onto that subject> >again!) I have been struggling to find any mention of the causes for> >this, only the fact that it is a fairly common thing to see. I guess it> >is a lack of pigment? As all such individuals I've seen here are large,> >could it be something that signifies they are reaching old age? Does it> >indicate a lack of something in their diet? Pollution/eutrophication? If> >anyone has any ideas/knowledge I would love to learn.> >> >> >> >On a separate note I would like to send out a big thank you to the three> >people who posted on the coral-list vol 59 issue 6. For the first time> >since I have been a member I did not have to wade through endless reams> >of old postings (that had been left tagged to the bottom of their entry)> >while trying to figure out which messages were the new messages. Well> >done! Maybe we can keep this up?> >> >> >> >> >> >Stuart Wynne> >Marine Biologist> >Department of Fisheries and Marine Resources> >Anguilla> >> >> >> >> >> >> >> >> >Government of Anguilla> >_______________________________________________> >Coral-List mailing list> >Coral-List at coral.aoml.noaa.gov> >http://coral.aoml.noaa.gov/mailman/listinfo/coral-list> >> >> >>> --> *************************************************************> * *> * John R. Ware, PhD *> * President *> * SeaServices, Inc. *> * 19572 Club House Road *> * Montgomery Village, MD, 20886, USA *> * 301 987-8507 *> * jware at erols.com *> * http://www.seaservices.org *> * fax: 301 987-8531 *> * Treasurer and Member of the Council: *> * International Society for Reef Studies *> * _ *> * | *> * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~|~~~~~~~~~~~~~~~~ *> * _|_ *> * | _ | *> * _______________________________| |________ *> * |\/__ Untainted by Technology \ *> * |/\____________________________________________/ *> *************************************************************>>>>> _______________________________________________> Coral-List mailing list> Coral-List at coral.aoml.noaa.gov> http://coral.aoml.noaa.gov/mailman/listinfo/coral-list> -- Robert J. MillerMarine Science InstituteUniversity of California, Santa BarbaraSanta Barbara CA 93106-6150(805) 893-7295_______________________________________________Coral-List mailing listCoral-List at coral.aoml.noaa.govhttp://coral.aoml.noaa.gov/mailman/listinfo/coral-list ------------------------------ Message: 3Date: Mon, 12 May 2008 11:34:52 -0400From: "Barbara Whitman" <terramar at caribcable.com>Subject: Re: [Coral-List] White-spined Diadema antillarumTo: <coral-list at coral.aoml.noaa.gov>, "Gordon Hendler" <hendler at nhm.org>Message-ID: <54854ECCE0F94C03AF6CF4B06DF15943 at BarbaraWhitmPC>Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original I have had individuals in my aquariums that were originally all black-spined but did end up with some white spines. My aquariums are directly linked to the Caribbean and sometimes during a surge they bring in fine sediments so perhaps that had something to do with it.. I have also had small Diadema which were all black. The black coloring does come off the spines sometimes if you touch them - which unfortunately I do fairly often when cleaning the tanks. I have not noticed a difference in their coloring between day and night and when the water is clean opposed to when there are fine sediments making the water more murky but I will pay more attention now. Barb WhitmanUnder the Sea Sealife Education CentreNevis, West Indies ----- Original Message ----- From: "Gordon Hendler" <hendler at nhm.org>To: <coral-list at coral.aoml.noaa.gov>Sent: Monday, May 12, 2008 12:32 AMSubject: Re: [Coral-List] White-spined Diadema antillarum > According to Moore (1966:81) large Diadema antillarum with some or many> white or gray spines "...are found in darker and more turbid conditions > and> frequently in caves. In my experience, they seem to be more common in deep> water around Caribbean reefs than at shallow depths. The spines of> juveniles are always banded with black and white. Individuals change color> in response to the intensity of illumination. Animals that are black > during> the day pale at night.> Hendler et al. 1995. Sea Stars, Sea Urchins, and Allies. Echinoderms of> Florida and the Caribbean. Smithsonian Institution Press. 390 pp.> Moore, H.B. Ecology of echinoids. In: Physiology of Echinodermata, ed. > R.A.> Boolootian, 73-85. John-Wiley Interscience. N.Y.>>> ********************************************> Gordon Hendler, Ph.D.> Curator of Echinoderms> Natural History Museum of Los Angeles County> 900 Exposition Boulevard> Los Angeles, California 90007 U.S.A.> Voice: 213 763 3526> Fax: 213 746 2999> ********************************************>> _______________________________________________> Coral-List mailing list> Coral-List at coral.aoml.noaa.gov> http://coral.aoml.noaa.gov/mailman/listinfo/coral-list ------------------------------ Message: 4Date: Mon, 12 May 2008 11:51:40 -0400From: Mark Eakin <Mark.Eakin at noaa.gov>Subject: Re: [Coral-List] Coral bleaching in the western pacific warm pool.To: Ruben van Hooidonk <rubski at gmail.com>Cc: coral-list at coral.aoml.noaa.govMessage-ID: <8167A324-038E-41B2-B46B-642D634A5692 at noaa.gov>Content-Type: text/plain; charset=US-ASCII; delsp=yes;format=flowed You should look at a recent paper by Kleypas et al. on this subject: Kleypas, Joan A., Gokhan Danabasoglu, and Janice M. Lough (2008) Potential role of the ocean thermostat in determining regionaldifferences in coral reef bleaching events. GEOPHYSICAL RESEARCH LETTERS, VOL. 35, L03613, doi:10.1029/2007GL032257. Cheers,Mark On May 7, 2008, at 5:24 PM, Ruben van Hooidonk wrote: > Hi,>> During research on thermal coral bleaching in the western pacific > warm pool,> I noticed that observations of coral bleaching in that region are very> limited in the reefbase.org database. I would like to know if > anyone knows> of any bleaching episodes not recorded in that database.>> You can see the location of the warm pool here:> http://roskilde.eas.purdue.edu/~ruben/wpwp.jpg>> If you know of any observations of bleaching in that region, please to> submit your data on the form that can be found here:> http://roskilde.eas.purdue.edu/~ruben/bleaching_in_WPWP.php>> Thank you very much for your help, and if you have any questions or > remarks> please ask me directly,>> Ruben van Hooidonk> Purdue University> _______________________________________________> Coral-List mailing list> Coral-List at coral.aoml.noaa.gov> http://coral.aoml.noaa.gov/mailman/listinfo/coral-list ------------------------------------------------------------------------ ------------------------C. Mark Eakin, Ph.D.Coordinator, NOAA Coral Reef WatchNational Oceanic and Atmospheric AdministrationCenter for Satellite Applications and ResearchSatellite Oceanography & Climate Divisione-mail: mark.eakin at noaa.govurl: coralreefwatch.noaa.gov E/RA31, SSMC1, Room 53081335 East West HighwaySilver Spring, MD 20910-3226301-713-2857 x109 Fax: 301-713-3136 ------------------------------ _______________________________________________Coral-List mailing listCoral-List at coral.aoml.noaa.govhttp://coral.aoml.noaa.gov/mailman/listinfo/coral-list End of Coral-List Digest, Vol 59, Issue 11******************************************
--Forwarded Message Attachment--From: southern_caribbean at yahoo.comSubject: Re: [Coral-List] Biodiversity Resource LocaterDate: Tue, 13 May 2008 15:08:19 -0700To: creefs.hawaii at gmail.com; coral-list at coral.aoml.noaa.gov; vivi.fruh at gmail.com; andrea.rivera at postgrad.plymouth.ac.ukThis is an effort that is worthwhile if pursued with the following in mind: Investigate (regional) existing databases for marine, biology and oceanography data, You will be amazed how much is already out there. You may want to consider making the endeavor compatible with online repository and library standards for searching.This makes interfacing with similar repositories easier and access through other channels of your data also easier You may want to consider building in the option of "semantic web" richer data representationRainbow Warriors Core Foundation (based in Aruba) and Stichting Ekolibrium (based in Holland) are working on portals to databases with among other things the type of information you are proposing, and it would be very interesting to see if we can combine efforts. Rainbow Warriors Core Foundation is working on two meta portal proposals, one for the Caribbean and one for the Pacific, and we feel there may be common ground here to cover, which merits looking into the possibilities of combining forces. Regards Milton PonsonRainbow Warriors Core Foundation "Census of Coral Reef Ecosystems (CReefs)" <creefs.hawaii at gmail.com> wrote: Aloha Coral Listers, The Census of Marine Life (CoML), Census of Coral Reef Ecosystems project(CReefs), has a vision to develop and implement a web-based resource locaterfor biodiversity information focusing on the lesser studied coral reeforganisms, such as non-coral marine invertebrates, algae, and microbes. Theobjective of the resource locator is to provide you, the scientificcommunity, with a site that will enable you to search for coral reefbiodiversity information on an organism or taxonomic group of interest inselect regions around the world. Initially the search engine will focus oncurrent researchers, research institutions, and databases with informationon specific taxonomic groups. For example, if you were interested inresearch being conducted in Hawai'i on urchins from the genus, *Echinothrix*,you would select Hawai'i as your region of interest on the website, type in*Echinothrix* as your target organism and receive an output containing alist of the current researchers, affiliated institutions supporting thisresearch, and databases with information on *Echinothrix* in the HawaiianArchipelago. Ultimately we would like to incorporate other resources intothe locator such as; journal articles, past experts (to help find olderbibliographies that are not currently listed in on-line databases), museumsthat contain specimens of specific taxa and links to their specimendatabases if they exist, libraries containing old references andbibliographies of such references, websites on specific taxa (fromaccredited institutions, university systems or museums), and taxonomic keys. We are writing to you to solicit your opinion regarding this vision. Is thissomething that would be worthwhile? Does anyone know if such a resourcealready exists and if so, how is it similar to or different from our vision?Feedback received regarding this endeavor will help us to mold and hopefullycreate a useful product for all of you. Please e-mail us atCReefs.hawaii at gmail.com with your comments. We will be following-up in thenear future to request those of you focusing on non-coral marineinvertebrates, algae, and microbes to e-mail us your expertise andaffiliated institutions so that we can start compiling the database. Mahalo Nui Loa, Amy HallMegan MoewsMolly Timmers CReefs.hawaii at gmail.com http://www.creefs.org/http://www.coml.org/_______________________________________________Coral-List mailing listCoral-List at coral.aoml.noaa.govhttp://coral.aoml.noaa.gov/mailman/listinfo/coral-list
--Forwarded Message Attachment--From: richmond at hawaii.eduSubject: [Coral-List] Proposals for 12th International Coral Reef Symposium - Please postDate: Tue, 13 May 2008 17:26:59 -1000To: coral-list at coral.aoml.noaa.gov Request for Proposals for the 12th International Coral Reef Symposium, 2012 During the 11th International Coral Reef Symposium, Ft. Lauderdale, Florida USA, July 6 - 12, 2008, the hosts and venue will be chosen for the 12th ICRS, to be held sometime in 2012. The Symposia are a great opportunity to advance international understanding and appreciation of the most diverse marine ecosystems on earth, and to strengthen local, regional and international support and cooperation for their wise use, treatment, protection and conservation. Proposals are requested by groups (proposed Local Organizing Committees) willing to host this meeting, under the auspices of the International Society for Reef Studies (ISRS). Proposals can only be submitted by members of the Society in good standing. The following criteria will be used by the selection committee: 1.. Venue: Capacity to accommodate approximately 1,500 participants and multiple, simultaneous sessions. Security and safety of the participants are key considerations. 2.. Accommodation: A range of reasonably priced hotels, housing and food outlets near or within easy access of the venue for a range of participants including students and attendees with limited financial resources. 3.. Accessibility to the international community: Opportunities for all nationalities to get required visas and travel documents in a timely fashion. 4.. Budget details, including proposed registration fees, items covered by the fees, costs for publication and distribution of abstracts and the proceedings, and a facilitated means of payment for international participants. 5.. The scientific program and the variety of sessions for researchers, managers, educators and policy-oriented individuals, including plenary speakers. 6.. Logistics of meetings, including schedules, travel to and from and within the host jurisdiction, meals and an accompanying persons program. 7.. Publication plan (publisher and timeline) for the abstracts and proceedings. 8.. Financial aid availability, particularly for students 9.. Pre and post symposium field trips. 10.. Access by the media and the local community. 11.. Cooperation and coordination with local governmental and non-governmental organizations and entities. Responsibilities of the Local Organizing Committee include: a.. Developing and maintaining a website for announcements, registration, and logistical details. b.. Fund raising, in cooperation with the ICRS, to support activities, broad participation and representation, and the program elements. c.. Editing, printing and distribution of the abstracts and proceedings. d.. Identifying professional conference organizers that will work with the Local Organizing Committee. e.. Identifying members of the Local Organizing Committee, including the Conference Chairperson, Program Chair, Publications Editor, Treasurer, Field Trip Coordinator, and Media Coordinator. f.. Developing a timetable of activities leading up to, during and following the Symposium. The deadline for submissions is May 30, 2008. Submissions received after this date are not guaranteed to be considered. Electronic/digital submissions are encouraged (can be a combination of files in Word, jpg and pdf formats). If submitting printed materials, 8 copies must be included and received at the address below by the deadline. Groups submitting bids to host the 12th ICRS will be invited to make a 20 minute presentation to the selection committee at the 11th ICRS in Florida in July, 2008. Please send submissions and direct inquires to: Dr. Robert Richmond Kewalo Marine Laboratory University of Hawaii at Manoa 41 Ahui Street Honolulu, Hawaii 96813 USA richmond at hawaii.edu (1) 808-539-7331 Robert H. Richmond, Ph.D.Research ProfessorKewalo Marine LaboratoryUniversity of Hawaii at Manoa41 Ahui StreetHonolulu, Hawaii 96813Phone: 808-539-7331Fax: 808-599-4817E-mail: richmond at hawaii.edu
--Forwarded Message Attachment--From: cfloros at ori.org.zaSubject: Re: [Coral-List] Hawksbill turtle predating on coralsDate: Wed, 14 May 2008 08:18:11 +0200To: coral-list at coral.aoml.noaa.govHi David Several years ago while diving at Sodwana Bay (South Africa), I saw ahawksbill feeding on soft coral like it was candy floss (if I remembercorrectly it was a Sarcophyton). The turtle ate at least a third of thecolony with great 'relish'. I haven't as yet observed turtles feeding onhard corals. Camilla Today's Topics: 1. Re: Hawskbill turtles predating corals (William Allison) 2. Re: White spined diadema (Martin Moe) 3. Re: White-spined Diadema antillarum (Barbara Whitman) 4. Re: Coral bleaching in the western pacific warm pool. (Mark Eakin) ---------------------------------------------------------------------- Message: 1Date: Mon, 12 May 2008 08:25:39 -0400From: "William Allison" <allison.billiam at gmail.com>Subject: Re: [Coral-List] Hawskbill turtles predating coralsTo: "David Obura" <dobura at africaonline.co.ke>Cc: "coral-list at coral.aoml.noaa.gov" <coral-list at coral.aoml.noaa.gov>Message-ID: <1eab821b0805120525x63ca90abm1e72739ba45ce87b at mail.gmail.com>Content-Type: text/plain; charset=ISO-8859-1 Hi David,I observed this behaviour once in Maldives where I have also seen hawksbillsgrazing on false corals.Bill On Sat, May 10, 2008 at 3:14 PM, David Obura <dobura at africaonline.co.ke>wrote: > Hi all,>> While in Aldabra and Alphonse islands (Seychelles) I noted a> behaviour/effect of hawskbill turtles that I've never heard mentioned> before. I had noted dead patches/scars on a bubble coral in the genus> Physogyra that were widespread, though not covering a large proportion of> the coral. I was watching a hawksbill turtle swimming out from behind one> of> these heads and noticed that it had tissue in its mouth, and it bent down> and took a bite from the coral. I then observed the same behaviour and> coral-scars on Alphonse.>> Has anyone reported hard coral tissue in hawksbill gut contents, or damage> to corals from turtle predation? I'm intrigued, as though the impact was> not> huge to the corals, this was definitely a stable food source for the> turtles, and impact on the corals.>> Best,>> David Obura> CORDIO East Africa> 9 Kibaki Flats, Kenyatta Public Beach> P.O.BOX 10135 Mombasa 80101, Kenya> Tel/fax: +254-20-3548549; mobile 0733-851656> dobura at cordioea.org, dobura at africaonline.co.ke>>> _______________________________________________> Coral-List mailing list> Coral-List at coral.aoml.noaa.gov> http://coral.aoml.noaa.gov/mailman/listinfo/coral-list> ------------------------------ Message: 2Date: Mon, 12 May 2008 06:31:28 -0700 (PDT)From: Martin Moe <martin_moe at yahoo.com>Subject: Re: [Coral-List] White spined diademaTo: Robert Miller <rjmiller1 at gmail.com>, John Ware <jware at erols.com>Cc: coral-list at coral.aoml.noaa.govMessage-ID: <961181.54894.qm at web42105.mail.mud.yahoo.com>Content-Type: text/plain; charset=us-ascii On white spined Diadema,I've seen and collected numerous white spined Diadema. The cause andoccurrence of the white spines is not clear to me. I know that on the armsof the urchin, yes, they have arms, sort of. On the test there are 5triangular plates, the ambulacral plates, that are like the 5 arms of astarfish but as if they were folded up from the aboral pole and fused intothe spherical body. The tube feet of the urchin are located on the edges ofthese plates. The spines that originate on these ambulacral plates and thespines that originate from the interambulacrum areas are generallyindistinguishable during the day, but at night the spines on the 5ambulacral plates are usually white or whitish and give the urchin a sort ofstriped look. This the nocturnal color phase. Juveniles have spines withvariable dark and white ringed spines. From working with my brood stock, Igot the impression that it is the older individuals that seem to retain thenocturnal coloration during the day. In my brood stock I have two individuals that permanentlyretain white spines on the ambulacral plates, these two are males.... Butthere are other males that do not retain the nocturnal coloration. And Ihave collected some individuals with all brilliant while spines, from notparticularly deep in the reef, and with "normally" dark purple coloredindividuals in the same area. I have had individuals that were all white oncollection become dark after a time in the brood stock tank and some thatpermanently retain full or partial white coloration for a year ormore.Usually it is the larger (older?) individuals that exhibit partial ortotal white spines, but some smaller individuals also have this coloration.Also, the incident of white spined individuals seems to vary in differentareas of the reef. Some areas seem to have considerably more individualswith partial or full white spine coloration than other areas.So, basically, some Diadema, a relatively small percentage, have a permanentor long term, all or partial white spine coloration, and I don't know whythis is so..... Martin Moe ----- Original Message ----From: Robert Miller <rjmiller1 at gmail.com>To: John Ware <jware at erols.com>Cc: coral-list at coral.aoml.noaa.govSent: Saturday, May 10, 2008 1:34:00 PMSubject: Re: [Coral-List] White spined diadema Hi,Somewhere out there is an old study that showed, I believe, that juvenileDiadema that were raised in the dark were all white. Other studies haveshown, as John Ware says, that more white ones are found deeper and underrocks etc. Unfortunately I don't have the references now.good luck,Bob On Fri, May 9, 2008 at 10:06 AM, John Ware <jware at erols.com> wrote: > Stuart,>> I was hoping that someone who had firm knowledge would respond, because> my memory is old and feeble. Some 15 or 20 years ago I read a paper> (which I cannot recall or find) that stated that the white-spined D.a.> were more often found in low visibility environments. At least that is> my recollection.>> John>> Stuart P. Wynne wrote:>> >Dear all,> >> >> >> >I have been trying to find references to the white spined Diadema> >antillarum that I sometimes see in our waters here in Anguilla. As I am> >not privy to open access (but please let us not get onto that subject> >again!) I have been struggling to find any mention of the causes for> >this, only the fact that it is a fairly common thing to see. I guess it> >is a lack of pigment? As all such individuals I've seen here are large,> >could it be something that signifies they are reaching old age? Does it> >indicate a lack of something in their diet? Pollution/eutrophication? If> >anyone has any ideas/knowledge I would love to learn.> >> >> >> >On a separate note I would like to send out a big thank you to the three> >people who posted on the coral-list vol 59 issue 6. For the first time> >since I have been a member I did not have to wade through endless reams> >of old postings (that had been left tagged to the bottom of their entry)> >while trying to figure out which messages were the new messages. Well> >done! Maybe we can keep this up?> >> >> >> >> >> >Stuart Wynne> >Marine Biologist> >Department of Fisheries and Marine Resources> >Anguilla> >> >> >> >> >> >> >> >> >Government of Anguilla> >_______________________________________________> >Coral-List mailing list> >Coral-List at coral.aoml.noaa.gov> >http://coral.aoml.noaa.gov/mailman/listinfo/coral-list> >> >> >>> --> *************************************************************> * *> * John R. Ware, PhD *> * President *> * SeaServices, Inc. *> * 19572 Club House Road *> * Montgomery Village, MD, 20886, USA *> * 301 987-8507 *> * jware at erols.com *> * http://www.seaservices.org *> * fax: 301 987-8531 *> * Treasurer and Member of the Council: *> * International Society for Reef Studies *> * _ *> * | *> * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~|~~~~~~~~~~~~~~~~ *> * _|_ *> * | _ | *> * _______________________________| |________ *> * |\/__ Untainted by Technology \ *> * |/\____________________________________________/ *> *************************************************************>>>>> _______________________________________________> Coral-List mailing list> Coral-List at coral.aoml.noaa.gov> http://coral.aoml.noaa.gov/mailman/listinfo/coral-list> -- Robert J. MillerMarine Science InstituteUniversity of California, Santa BarbaraSanta Barbara CA 93106-6150(805) 893-7295_______________________________________________Coral-List mailing listCoral-List at coral.aoml.noaa.govhttp://coral.aoml.noaa.gov/mailman/listinfo/coral-list ------------------------------ Message: 3Date: Mon, 12 May 2008 11:34:52 -0400From: "Barbara Whitman" <terramar at caribcable.com>Subject: Re: [Coral-List] White-spined Diadema antillarumTo: <coral-list at coral.aoml.noaa.gov>, "Gordon Hendler" <hendler at nhm.org>Message-ID: <54854ECCE0F94C03AF6CF4B06DF15943 at BarbaraWhitmPC>Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original I have had individuals in my aquariums that were originally all black-spined but did end up with some white spines. My aquariums are directly linked to the Caribbean and sometimes during a surge they bring in fine sediments so perhaps that had something to do with it.. I have also had small Diadema which were all black. The black coloring does come off the spines sometimes if you touch them - which unfortunately I do fairly often when cleaning the tanks. I have not noticed a difference in their coloring between day and night and when the water is clean opposed to when there are fine sediments making the water more murky but I will pay more attention now. Barb WhitmanUnder the Sea Sealife Education CentreNevis, West Indies ----- Original Message ----- From: "Gordon Hendler" <hendler at nhm.org>To: <coral-list at coral.aoml.noaa.gov>Sent: Monday, May 12, 2008 12:32 AMSubject: Re: [Coral-List] White-spined Diadema antillarum > According to Moore (1966:81) large Diadema antillarum with some or many> white or gray spines "...are found in darker and more turbid conditions > and> frequently in caves. In my experience, they seem to be more common in deep> water around Caribbean reefs than at shallow depths. The spines of> juveniles are always banded with black and white. Individuals change color> in response to the intensity of illumination. Animals that are black > during> the day pale at night.> Hendler et al. 1995. Sea Stars, Sea Urchins, and Allies. Echinoderms of> Florida and the Caribbean. Smithsonian Institution Press. 390 pp.> Moore, H.B. Ecology of echinoids. In: Physiology of Echinodermata, ed. > R.A.> Boolootian, 73-85. John-Wiley Interscience. N.Y.>>> ********************************************> Gordon Hendler, Ph.D.> Curator of Echinoderms> Natural History Museum of Los Angeles County> 900 Exposition Boulevard> Los Angeles, California 90007 U.S.A.> Voice: 213 763 3526> Fax: 213 746 2999> ********************************************>> _______________________________________________> Coral-List mailing list> Coral-List at coral.aoml.noaa.gov> http://coral.aoml.noaa.gov/mailman/listinfo/coral-list ------------------------------ Message: 4Date: Mon, 12 May 2008 11:51:40 -0400From: Mark Eakin <Mark.Eakin at noaa.gov>Subject: Re: [Coral-List] Coral bleaching in the western pacific warm pool.To: Ruben van Hooidonk <rubski at gmail.com>Cc: coral-list at coral.aoml.noaa.govMessage-ID: <8167A324-038E-41B2-B46B-642D634A5692 at noaa.gov>Content-Type: text/plain; charset=US-ASCII; delsp=yes;format=flowed You should look at a recent paper by Kleypas et al. on this subject: Kleypas, Joan A., Gokhan Danabasoglu, and Janice M. Lough (2008) Potential role of the ocean thermostat in determining regionaldifferences in coral reef bleaching events. GEOPHYSICAL RESEARCH LETTERS, VOL. 35, L03613, doi:10.1029/2007GL032257. Cheers,Mark On May 7, 2008, at 5:24 PM, Ruben van Hooidonk wrote: > Hi,>> During research on thermal coral bleaching in the western pacific > warm pool,> I noticed that observations of coral bleaching in that region are very> limited in the reefbase.org database. I would like to know if > anyone knows> of any bleaching episodes not recorded in that database.>> You can see the location of the warm pool here:> http://roskilde.eas.purdue.edu/~ruben/wpwp.jpg>> If you know of any observations of bleaching in that region, please to> submit your data on the form that can be found here:> http://roskilde.eas.purdue.edu/~ruben/bleaching_in_WPWP.php>> Thank you very much for your help, and if you have any questions or > remarks> please ask me directly,>> Ruben van Hooidonk> Purdue University> _______________________________________________> Coral-List mailing list> Coral-List at coral.aoml.noaa.gov> http://coral.aoml.noaa.gov/mailman/listinfo/coral-list ------------------------------------------------------------------------ ------------------------C. Mark Eakin, Ph.D.Coordinator, NOAA Coral Reef WatchNational Oceanic and Atmospheric AdministrationCenter for Satellite Applications and ResearchSatellite Oceanography & Climate Divisione-mail: mark.eakin at noaa.govurl: coralreefwatch.noaa.gov E/RA31, SSMC1, Room 53081335 East West HighwaySilver Spring, MD 20910-3226301-713-2857 x109 Fax: 301-713-3136 ------------------------------ _______________________________________________Coral-List mailing listCoral-List at coral.aoml.noaa.govhttp://coral.aoml.noaa.gov/mailman/listinfo/coral-list End of Coral-List Digest, Vol 59, Issue 11******************************************
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