Diversity of Zoantharia (Anthozoa: Hexacorallia) at Dongsha Atoll in the South China Sea

Diversity of Zoantharia (Anthozoa: Hexacorallia) at Dongsha Atoll in the South China Sea

Accepted Manuscript Diversity of Zoantharia (Anthozoa: Hexacorallia) at Dongsha Atoll in the South China Sea James Davis Reimer, Maria Eduarda Alves S...

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Accepted Manuscript Diversity of Zoantharia (Anthozoa: Hexacorallia) at Dongsha Atoll in the South China Sea James Davis Reimer, Maria Eduarda Alves Santos, Hiroki Kise, Mei Lin Neo, Chaolun Allen Chen, Keryea Soong PII: DOI: Reference:

S2352-4855(16)30229-8 http://dx.doi.org/10.1016/j.rsma.2017.02.006 RSMA 225

To appear in:

Regional Studies in Marine Science

Received date: 11 October 2016 Please cite this article as: Reimer, J.D., Santos, M.E.A., Kise, H., Neo, M.L., Chen, C.A., Soong, K., Diversity of Zoantharia (Anthozoa: Hexacorallia) at Dongsha Atoll in the South China Sea. Regional Studies in Marine Science (2017), http://dx.doi.org/10.1016/j.rsma.2017.02.006 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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,8::.;987-270*=<18: ABSTRACT 870;1*<8552;<1.5*:0.;<,8:*5*<85527<1.%8=<1127*%.*%%*7-2;.@9.,<.-<8 1*:+8:12015.>.5;8/+28-2>.:;2.:;2.:-=.<82<;:.5*<2>.2;85*<287<1. +28-2>.:;2.;<20*<.-/8:68;<6*:27.<*@*7<12;;<=-A ?.:.98:<87/27-270;/:868=:;=:>.A27 <1*</8,=;.-87<1.8:-.:)8*7<1*:2*/8:?12,1875A ;98:*-2,9:.>28=;:.98:<;.@2;</:86<1.%%"=::.;=5<;27-2,*<.;86.;9.,2.;;=,1*;Palythoa tuberculosa*:.>.:A,86687*:8=7-870;1*<855*;?.55*;<1.9:.;.7,.8/*<5.*;<<1:.. =7-.;,:2+.-;9.,2.;27,5=-27087.;9.,2.;875A/8=7-<1=;/*:*<<1.*<855">.:*55?.:.,8:-.-  ;9.,2.;8/)8*7<1*:2*/:86870;1*<855+:270270<1.<8<*57=6+.:8/B8*7<1*:2*7;9.,2.;27<1. %%<8 ,58;.<87=6+.:;:.98:<.-/:86<1.# ;99*7-;8=<1.:7*9*7 ;99&1.;.

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

2= 17?.>.:<1.:.1*>.+..66726>.;<20*<276;76B7*6<1*:2*6;8.,2.;*<<1.*<744 &1.:./7:.<1.*25;7/<12;;<=-A?.:.<726>.;<20*<.<1.-2>.:;2.6<;-2>.;;67:3.4;*< ;2<.;*:7=6-*6-?2<126<1.*<74420=:. &*+4.  :.8:.;.6<260-2//.:.6<5*:26..6>2:765.6<;26,4=-260?*44;:../;478.;,:.;<;4*07768*<,1:../; ,1*66.4;:=++4.B76.;;.*0:*;;B76.;*6-,*>.;&*+4.  2.2 Specimen collection and morphological analyses %8.,25.6,744.,<276?*;8.:/7:5.-=;260;67:3.4260*6-%'*<-.8<1;/:75<1. 26<.:<2-*4<7 5In situ1201:.;74=<27625*0.;?.:.<*3.6<7*6*4AB.57:8174702,*4,1*:*,<.:;.0 7:*4-2;3,747:874A8/7:5;2B.<.6<*,4.6=5+.:-.6<2/2,*<276/7447?.-42<.:*<=:.76B7*6<1*:2*6; /:75<1.6-7#*,2/2,*6-%%#*@  (.;< =:6.<<.<*4 $.25.: $.25.:.<*4 *

* %8.,25.6;?.:.8:.;.:>.-26 .<1*674?2<1;75. *,:7,6.526* ;8.,25.6;8:.;.:>.-26 ;*4
%8.,2.;42;<.-+.47?*;.@84*26.-26$.25.:.<*4

* =64.;;67<.-7<1.:?2;.(.

,744.,<.- ;8.,25.6;/:75 ;2<.;*:7=6-760;1*<74488.6-2@&*+4.  ":-.:)7*6<1*:2*:*A   %=+7:-.::*,1A,6.526**--76*6-%1*,34.<76  * *524A)7*6<12-*.$*/26.;9=.   .6=;Zoanthus*5*:,3  

 Zoanthus sansibaricus *:40:.6  20=:. * %8.,25.6; 66.: *<744  6  !7:<1 ,1*66.4  6  !7:<1.*;< 7=<;2-. 6  %7=<1?.;<7=<;2-.6<7<*4;8.,25.6;  !7<.; &12; ;8.,2.; 1*; 8:.>27=;4A +..6 :.87:<.- /:75 6=5.:7=; 47,*<276; 26 <1. %%

86;5, 65/90):633 )3:06;/0 1: =)9 :0- 469: +64465 Zoanthus 97-+1-9 1: =)9 56: .6;5, 6.:-5 )5, 653? 15 94)33 +63651-9   +4 15 4)>14;4 ,1)4-:-8 '019 97-+1-9 )77-)89 :6 *- :63-8)5: 6. ) =1,- <)81-:? 6. -5<18654-5:9 -/ %-14-8 -: )3  * 7-80)79 ,;- :6 .3->1*131:? 15 )996+1):1659 =1:0 1:9 -5,69?4*16:1+ Symbiodinium 977 %-14-8-:)3 *)4-@)21-:)3  5:0199:;,?:019=)9:0-653?@6)5:0)81)5 97-+1-9 6*9-8<-, =1:015 :0- 155-8 3)/665 )=)? .864 :0- +6)9: 6. $8):)9 65/90) 93)5,:=)9.6;5,6<-8)=1,-8)5/-6.,-7:09

4)978-<16;93?9--515#215)=) )7)5)4-@)21-:)3  

 Zoanthus gigantus %-14-8  '9;2)0)8) 15 %-14-8 '9;2)0)8) =)4) ')21901:)  !)8;?)4)  1/;8- * &7-+14-59"68:0-)9:6;:91,-5 :6:)397-+14-59  "6:-9 Zoanthus gigantus 0)9 653? *--5 78-<16;93? 8-768:-, .864 65- 6:0-8 36+):165 15 :0-&&65/65/%-14-8-:)3  '0-:=6+63651-9.6;5,15:0199:;,?=-8-<-8? 94)33+65919:15/6. 763?79)5,653?):65-91:-65:0-6;:91,-6.:0-):633): 4 ,-7:09)5,:0;9=-->7-+::0)::01997-+1-9198)8-15:0-=):-896.65/90):633)5,15 :0-&&  Zoanthus kuroshio %-14-8#5615%-14-8=)4)')21901:)'9;2)0)8)!)8;?)4)

 1/;8- + &7-+14-59)9:6;:91,-5 :6:)397-+14-59  "6:-9'01997-+1-9=)9653?.6;5,65+-15:0-90)336==):-8965:0-6;:91,-6.:0--)9: +6)9:):633): 4)5,+)5*-+6591,-8-,8)8-)86;5,65/90):6335:0-&&1:0)9 653?78-<16;93? *--5 8-768:-, .864 60')6'0)13)5,)5,96;:0-85')1=)5%-14-8-: )3  '01997-+1-9197814)813?.6;5,1590)336=9;*:1,)3=):-89656;:-8+68)38--.9 8-1-:)3   )413?&70-5671,)--8:=1/   -5;9Palythoa )46;86;>  

 Palythoa97sakurajimensis 9-59;%-14-8-:)3 * 1/;8- , &7-+14-59 )9: 6;:91,- 5 "68:0 +0)55-3  5  "68:0-)9: 6;:91,- 5  &6;:0=-9:6;:91,-5 (8-+265=-9:91,-5 :6:)397-+14-59  "6:-9'01997-+1-9=)9.6;5,653?65:0-6;:-8):633;9;)33?):,-7:096. 

4-1:0-8

85209(7= 57 04 ;,7= 83(22 *52540,8 5-   652=68 0789 /=659/,80>,+ (8 (4 :4+,8*70),+ 86,*0,804$,03,7,9(2 )-753352,*:2(7<5710485:9/,74(6(459/,7<571/(8 04+0*(9,+ (++09054(2 86,*03,48 04 9/, ".(8(<(7( 82(4+8 $,03,7 ,9 (2  ( (4+ &(0<(4$,03,7,9(2  )&/,8,86,*03,48-75354.8/(95227,67,8,499/,8,*54+ 8,95-7,*57+8-7539/,%%(-9,7(7,*57+-753,4904.85:9/,74&(0<(4$,03,7,9(2

 

 Palythoa mutuki(++54%/(*12,954  ) 0.:7, , %6,*03,4854.8/(85:9/),(*/4 (895:980+,4 !579/5-(076579 4  !579/,(895:980+,4 %5:9/,(895:980+, 4 %5:9/,(895:980+, 4 '7,*154 <,8980+,4 959(286,*03,48  !59,8&/0886,*0,8<(8():4+(49(4+-5:4+)59/049/,044,72(.554(4+549/,5:980+, 5- 9/, (9522 (9 ( <0+, ;(70,9= 5- +,69/8    3 $,*,49 <571 -753 "104(<( (6(4 04+0*(9,89/(99/0886,*0,83(=(*9:(22=*5480895-9<5579/7,,*258,2=7,2(9,+86,*0,8  0>:=(3((4+$,03,7:46:)208/,++(9():9-5745<<,/(;,04*2:+,+(227,*57+8 <09/049/0886,*0,8Palythoa mutuki/(867,;05:82=),,47,6579,+-7538,;,7(225*(90548 049/,%%$,03,7,9(2    Palythoa*-toxica '(28/5<,78  0.:7, - %6,*03,48(895:980+,4 !579/5:980+, 4 !579/,(895:980+,4 %5:9/,(89 5:980+, 4 %5:9/,(895:980+, 4 %5:9/<,895:980+,4 959(286,*03,48 !59,8%0302(795*5486,*0-0*86,*03,485)8,7;,+04#(2(:$,03,7,9(2  ((4+(285 (959/,725*(90548049/,%%$,03,7,9(2  9/0886,*0,8<(835+,7(9,2=*53354 (75:4+54.8/(952204*5497(8995-:79/,74579/049/,4579/<,89#(*0-0*049/,<(9,785- &(0<(4(4+"104(<(
 (  9/,0+,4909=5-9/0886,*0,87,3(04895),+,-04090;,2=(8*,79(04,+  Palythoa tuberculosa 86,7   0.:7, . %6,*03,48(895:980+,4!579/*/(44,2 4 !579/5-(076579 4 !579/ 5:980+,  4  %5:9/,(89 5:980+,  4  %5:9/,(89 5:980+,  4  %5:9/,(89 5:980+,  4  %5:9/<,89 5:980+, 4  '7,*1 54 <,89 80+, 4  959(2 86,*03,48 

!6:,9 &/09 =(9 )? -(8 :/, 469: *64465 97,*0,9 05 :/, =(:,89 (86;5+ 65.9/(:633 -6;5+ (: (33 90:,9 (5+ (*8699 ( =0+, <(80,:? 6- +,7:/9 05:,8:0+(3  4 (5+ 0: /(9 ),,5 8,768:,+:6),=0+,3?+09:80);:,+05:/,%%$,04,8,:(3  5964,36*(:065965 :/,96;:/,(9:(5+96;:/=,9:6-:/,6;:,8(:633:/09=(965,6-:/,469:+6405(5:),5:/0* 97,*0,97(8:0*;3(83?05+,7:/96- 4(3:/6;./0:=(9();5+(5::6+,7:/9+6=5:6

4 $,9,(8*/ /(9 9/6=5 :/(: :/09 97,*0,9 09 -3,>0)3, =0:/ 0:9 ,5+69?4)06:0* Symbiodinium 977(*86990:9.,6.8(7/0*+09:80);:065;85,::  $,04,8(5+&6++ $,04,8,: (3  ( (3:/6;./ 0: 8,4(059 :6 ), 9,,5 0- *63650,9 (: +0--,8,5: +,7:/9 9/6= (5? Symbiodinium<(80(:065=0:/0565,36*(:065  Palythoa heliodiscus$?3(5+(5*(9:,8   0.;8, / %7,*04,59%6;:/=,9:6;:90+,5 :6:(397,*04,59  !6:,9 &/09 97,*0,9 =(9 8(8, 05 :/, =(:,89 (86;5+ 65.9/( :633 90403(8 :6 78,<06;9 6)9,8<(:065905#(3(;$,04,8,:(3  ();:;5302,"205(=((7(5=/,8,0:096-:,5 :/,469:*64465Palythoa97,*0,96)9,8<,+(:+,7:/9 48,0,:(3   %;)68+,8 (*86*5,405((++65%/(*23,:65  ( (403? 0*86@6(5:/0+(,;100$,04,8   ,5;9Microzoanthus;100$,04,8  

 Microzoanthus97 0.;8, ( %7,*04,59!68://(55,3 5 '8,*265=,9:90+,5 :6:(397,*04,59  !6:,9 %7,*04,59 6- (5 ;50+,5:0-0,+ Microzoanthus 97 =,8, -6;5+ (::(*/,+ :6 :/, ;5+,890+,96-*68(38;))3,86*29(:90:,9=0:/9(5+?9;)9:8(:,);::/,97,*0,9*6;3+56:), 0+,5:0-0,+(9763?79=,8,*369,+3:/6;./:/,9,8,78,9,5::/,-089:8,*68+9-68:/,.,5;9 -864:/,%%0:/(9),,58,768:,+=0+,3?(*8699:/,5+6#(*0-0*;100(5+$,04,8   $,04,8,:(3  )(5+:/;9-05+05.Microzoanthus(:65.9/(:6330956:9;8780905. (403??+86@6(5:/0+(,%0550.,8$,04,8#(=36=920   ,5;9Hydrozoanthus%0550.,8$,04,8#(=36=920  

 Hydrozoanthus(--gracilis =6=92?  sensu(83.8,5   0.;8, ) %7,*04,59%6;:/,(9:6;:90+, 5 :6:(397,*04,59  !6:,9 &/,9, 97,*04,59 (.8,, =,33 =0:/ :/, +,9*807:065 6- H. gracilis 9,59; (83.8,5

   +225< 8)'6:8 57'2 */81 '4* 9+49')2+8 !52+):2'7 *'9' 9.'9 /4*/)'9+ 9./8 86+)/+8 /8 )258+2> 7+2'9+* 95 (:9 */,,+7+49 ,753 9.+ 86+)/+8 57/-/4'22> *+8)7/(+* (> <5<81>    ,753 %'-'3/ '> '6'4 4 54-8.' 9522 ,5:4* +=)2:8/;+2> 54 5:98/*+ <'228 /4 '7+'8 5, 89754- ):77+49 54 Plumeria habereri %9+).5<  '8 /8 H. gracilis(+25</7897+)57*/49.+%%  Hydrozoanthus gracilis <5<81>  sensu/'3/225+9'2   /-:7+ ) %6+)/3+48'895:98/*+4 "579.+'895:98/*+4 959'286+)/3+48  "59+8 %6+)/3+48 5, 9./8 86+)/+8 )522+)9+* ,753 54-8.' 9522 '-7++ <+22   /'3/225+9'2  '4*$+/3+7+9'2  '(+/4- +6/(/59/) 54 9.+ .>*75?5'4 Plumeria habereri '4* .';/4- '4 +=9+74'2 8)'6:8 9.'9 /8 (75<4/8. /4 )5257  54 5:98/*+ <'228 /4 '7+'8 5, 89754- ):77+49 /789 7+)57* ,7539.+%% &./886+)/+8*/,,+78,7539.+59.+7*+8)7/(+*3576.59>6+5,9.+86+)/+8<./)..'8>+225< +=9+74'2 )5257'9/54 57'2 */81 '4* 9+49')2+8 '4* */,,+78 82/-.92> /4 352+):2'7 89:*/+8 %/44/-+7+9'2 .+7+'8H',,gracilis'4*,579./87+'854<+.';+2/89+*9.+8+'8 9<5*/,,+7+4986+)/+8/49./889:*>. '3/2>#'7'?5'49./*'++2'-+A75:'7*   +4:8Antipathozoanthus%/44/-+7$+/3+7#'<25<81/  

 Antipathozoanthus86 /-:7+ * %6+)/3+48'895:98/*+4 959'286+)/3+48  "59+8 &.+ 542> *+8)7/(+* 86+)/+8 5, 9./8 -+4:8 /4 9.+ #')/,/) /8 A. hickmani ,753 9.+ '2'6'-58 $+/3+7 '4* :0//   '29.5:-. 7+)57*8 5, :4*+8)7/(+* 86+)/3+48 +=/89 ,753'6'4$+/3+7+9'2  *454-8.'9522542>,5:4*'9'895:98/*+(:925)'22> )53354 '9 *+69.8 5, @  3 +6/(/59/) 54 '4 '49/6'9.'7/'4 /789 7+)57* ,57 ,'3/2> #'7'?5'49./*'+'4*-+4:8Antipathozoanthus/49.+%% '3/2>6/?5'49./*'++2'-+A75:'7*   +4:8Epizoanthus7'> 

 Epizoanthus',,illoricatus &/8).(/+7+1   /-:7+ +

'7-+14-5:):;6<;:1,-5 '6<;0-):;6<;:1,- 5 ;6;)3:7-+14-5: #6;-:(0-:-:7-+14-5:>-9-.6<5,);;0--5;9)5+-:6.+)=-:,-7;0 4)96<5,;0- 6<;:1,- 6. ;0- );633 5 ;01: :;<,? ;01: /96<715/ +65;)15: ;>6 469706;?7-: 65- >1;0 9-3);1=-3? 3)9/- 763?7:  44 15 ,1)4-;-9 +647)9-, ;6 6;0-9 ,-:+91*-, Epizoanthus :7-+1-: );;)+0-, ;6 -<51+1, >694 ;<*-: <51+1,)- Eunice )5, ;0- 6;0-9 >1;0 :069; ;-5;)+3-: 3-5/;0 69)3 ,1:2 ,1)4-;-9 )5, :4)33-9 69)5/- 69)3 ,1:2:   44 15 ,1)4-;-9 6;0 46970636/1-: )9- ,1..-9-5; .964 ,-:+91*-, :7-+1-: (6 <5,-9:;)5, 9-3);165:017: *-;>--5 ;01: /96<715/ )5, ,-:+91*-, :7-+1-: ,-;)13-, 463-+<3)9 )5, 46970636/1+)3)5)3?:-:)9-5--,-,

 Epizoanthus beriber 1:-&-14-9  1/<9- . '7-+14-5:):;6<;:1,-5;6;)3:7-+14-5: #6;-:(01::7-+1-:>):.6<5,15+)=-:);,-7;0:*-36> 41565/:0);633)5,653? );65-36+);16565;0-6<;:1,-6.;0-);633;1:-):?;61,-5;1.?;01::7-+1-:*?1;:>01;- +63651)3 763?7: >1;0 ) 46,-9);-3? ,-=-367-, +6-5-5+0?4- 3;06<15-)15;0-%)+1.1+$+-)5 1:-)5,&-14-9 ;01:9-79-:-5;:;0-.19:;9-+69,.964;0-''

 Epizoanthus illoricatus (1:+0*1-9-2  1/<9- / '7-+14-5:):;6<;:1,-5'6<;0-):;6<;:1,- 5 '6<;0-):;6<;:1,- 5;6;)3 :7-+14-5:  #6;-: (01: :7-+1-: :1413)9 ;6 6;0-9 Epizoanthus :77 6*:-9=-, ); 65/:0) ;633 1: 6*31/);-65-<51+1,>694;<*-:)5,1:)*<5,)5;15;0-5,6%)+1.1+&-14-9-;)3 )

) 1:-)5,&-14-9 (01::7-+1-:>):.6<5,>1;015)5,69)96<5,;0--5;9)5+- 6.+)=-:)5,659--..3669:6.;0-6<;-99--.6.65/:0);6333;06): 79-=16<:3? 9-769;-, .964 ;0- '' ): Epizoanthus ).. illoricatus *):-, 65 ;0- ,-=-3674-5; 6. +6-5-5+0?4- )5, 763?7 :1@- 15 &-14-9 -; )3   1; 0): *--5 ,-465:;9);-, ;0); ;01: :7-+1-: 0): ) 01/0 3-=-3 6. 15;9):7-+1.1+ 46970636/1+)3 =)91);165 )5,;0-Epizoanthus)..illoricatus469706;?7-15&-14-9-;)3 >)::<*:-8<-5;3? +65.194-, ): E. illoricatus 15

1:- )5, &-14-9   69 ;01: 9-):65 >- ;9-);

Epizoanthus )..illoricatus +633-+;-,.964!)?)5/!)?)5/;633")3)?:1)15&-14-9-; )3 ):E. illoricatus)5,;01::7-+1-:4)?*-,1:;91*<;-,>1,-3?15;0-''

 Epizoanthus inazuma 1:-&-14-9  1/<9- 0

$6,*03,49(9:5;:90+,4 $5;:/,(9:5;:90+, 4 :5:(296,*03,49  5:,9%/0996,*0,9=(9-5;4+0490302(8,4<08543,4:9:5E. illoricatus 9;*/(9=0:/0458 (: :/, ,4:8(4*, :5 *(<,9 (4+ 54 :/, 8,,- -2558 (4+ 9256,9 5- :/, 5;:,8 8,,- 5- 54.9/( :522 $6,*03,49 5- :/09 96,*0,9 (8, ;9;(22? +0--0*;2: :5 0+,4:0-? 04 :/, -0,2+ (9 :/,08 ,>:,84(23586/525.?09<,8?90302(8:5E. illoricatus04(20+,4:0-0*(:0545-:/0996,*0,9 8,7;08,9 5)9,8<04. 04:,84(2 3586/525.? (4+ *40+(, (4+ 6/?25.,4,:0* *536(809549 =0:/ E. illoricatus #,9;2:9 5- 68,20304(8? 352,*;2(8 (4(2?9,9 04+0*(:, :/(: 953, 96,*03,49 (::(*/,+:5,;40*0+=583:;),9*522,*:,+-85354.9/(:522=,8,E. inazuma09,(4+ #,03,8 ;46;)209/,+ +(:( %/,9, 96,*03,49 (8, :/, -089: 8,*58+9 -853 :/, $$ %/09 96,*0,9/(968,<05;92?),,48,*58+,+-853!104(=((6(409,(4+#,03,8   3.2 Zoantharians of Dongsha Atoll !;88,9;2:99/5=,+:/(::/,8,(8,(:2,(9: 96,*0,95-'5(4:/(80((:54.9/(:522 4*2;+,+04:/;94;3),8(8,:/,-089:8,*58+904:/,$$-58-(302??+85@5(4:/0+(,.,4;9 Hydrozoanthus96,*0,9H. gracilis(4+H.(--gracilis-(302?"(8(@5(4:/0+(,.,4;9 Antipathozoanthus;4+,9*80),+Antipathozoanthus96-(302?0*85@5(4:/0+(,.,4;9 Microzoanthus;40+,4:0-0,+Microzoanthus96(4+-58:/,96,*0,9Epizoanthus illoricatus,E. beriber,(4+E. inazuma++0:054(22?(2296,*0,98,658:,+/,8,8,68,9,4::/,-089:-583(28,*58+9-58 54.9/(:522   0--,8,4*,9),:=,,4:/,044,82(.554"8(:(992(4+(4+5;:,88,,-95-54.9/(:522 %/,044,82(.5545-54.9/(:522093;*/9/(225=,83(>03;3+,6:/04 138(+0;9 -853"8(:(992(4+3+,,6,9:+,6:/04:/,*,4:,85-:/,(:522

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alythoa tuberculosa(354.:/,359:*53354),4:/0*96,*0,9%/,044,8(:522 (8,(/(9,>6,80,4*,+9,<,8,2,:/(2)2,(*/04.04:/,6(9:(0  ';5,:(2  (4+3(4? 9*2,8(*:040(4*58(29+0,+04:/09,<,4:$53,@55>(4:/,22(:,@5(4:/(80(496,*0,9*(445::52,8(:,/0./ :,36,8(:;8,9(4+;2:8(<052,:8(+0(:054,99,8,:(2 (4+:/;90:098,(954()2,:5(99;3,:/(: Zoanthus(4+Palythoa96,*0,968,9,4:04:/,044,82(.554(::/09:03,(2959;--,8,+9,<,8, *549,7;,4*,9-853)2,(*/04.90302(8(99,,454:/,358,95;:/=(8+(?(4.(?(4.:52204:/, $68(:2?92(4+9&(/,,+,:(2  ;8:/,8358,:/,044,82(.55490:,9=/,8,9;8<,?9=,8,

%10&6%5'&8'3'%*#3#%5'3+;'&$:*+)*.'7'.41(4+.5#5+10+0&+%#5+0)#.#%-1(%+3%6.#5+10 #$.' 5+4 -01805*#5Zoanthus#0&Palythoa42223'('3#3'#48+5*'9214'&518#7'4#0&%+3%6.#5+103'+'5#.

  *'3'(13'5*'+00'3.#)1101(10)4*#51..&1'4015#22'#351*#7''07+310/'05446+5#$.' (13/#0:4*#..188#5'3;1#05*#3+#042'%+'4 *+4.18'3;1#05*#3+#042'%+'4&+7'34+5:#0&#$60�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pizoanthusHydrozoanthus, Antipathozoanthus #0&Microzoanthus48'..41/'/#%31%0'/+0+%;1#05*#3+#04+0*#$+5%#7'4#0& &''2'38#5'34 /')+4'#0&'+/'3  #0&46%**#$+5#54#3'%1//10+05*'165'33''( #3'#1(10)4*#51.. 14523'7+164;1#05*#3+#03'%13&4+05*'8'3'1$5#+0'&$:42'%+/'04#0&+/#)'4 %1..'%5'&$:01042'%+#.+454'+/'3'5#.  !*'0%1/2#3+0)515*'3'46.541(5*'%633'054637': 515*14'(31/2#454637':48'%#060&'345#0&5*'+/2135#0%'1((+'.&813-(1%64'&1042'%+(+%5#9# +05*+4%#4';1#05*#3+#04/10)5*'42'%+'4(160&+010)4*#51..+05*+4456&:41/'46%*#4 Microzoanthus42*#7'%3:25+%*#$+5#54')6,++#0&'+/'3  8*+.'15*'34#3'&+((+%6.551 +&'05+(:+05*'(+'.&')/#0:Zoanthus#0&Palythoa422630'55'5#. !'231214'5*#55*' 23'4'0%'1(3'4'#3%*'3442'%+(+%#..:(1%64'&10;1#05*#3+#048#410'1(5*'-':3'#41045*#541/#0: 0'83'%13&4(135*'8'3'(160&+05*+4456&: *'0'842'%+'43'%13&4#510)4*#51..3'2135'&*'3'+0%3'#4'5*';1#05*#3+#0&+7'34+5: +05*'(31/ 42'%+'451

42'%+'41(8*+%*5*3''H#((gracilisAntipathozoanthus42E #((illoricatus#3'.+-'.:60&'4%3+$'&13'17'38+5*5*'4'0'83'%13&442'%+'406/$'343'2135'&+0 5*'#3'0184+/+.#3515*14'1(5*' /132*142'%+'4'+/'3'5#.  ##.5*16)*$15*

*:.*;*:.;<255=7-.:;<=-2.-*7->.:A524.5A1*:+8:*--2<287*5;9.,2.;8<18/<1.;.:.0287;;<255 ,=::.7<5A1*:+8:58?.:;9.,2.;-2>.:;2.-27*9*7 ;99$.26.:*7-=322  &1.;.:.;=5<;-.687;<:*<.<1*<68:.?8:42;7..-.-27+8<1:.0287;<8+.<<.:=7-.:;<*7- ;9.,2.;-2>.:;2.;<20*<.-..9.:?*<.:;?12,1524.5A1*:+8:=7478?7)8*7<1*:2*-2>.:;2.:;26=:<1A%1*;1*74 ,*-.62*%272,*/8:<1.2:1.5927/2.5-?8:4*7-5802;<2,;&1.;.728:*=<18:?*;*5;8;=998:<.-+A* %#%2+*70:*7<.7<2<5.-G58+*5.>85=<2878/:*,1A,7.627**7-<1.2:SymbiodiniumH 5. LITERATURE CITED =:7.<<(  8702<=-27*5>*:2*<28727*50*5;A6+287<;B88@*7<1.55*./:86<1.7-2*7",.*7 B8*7<12-Palythoa caesia *:27.,8580A#:80:.;;%.:2.;  F =:7.<<(.7B2..*:-68:.$A5*7-% 2010.7.<2,>*:2*+2522;28727 989=5*<287;8/*,587*5,72-*:2*7Zoanthus coppingeri/:86<1.:.*<*::2.:$../ *:27. 28580A 

F   =:7.<<(.7B2..*:-68:.$A5*7-%)8*7<12-;7<18B8*.@*,8:*552*/:86 <1.:.*<*::2.:$../*7-&8::.;%<:*2<=;<:*52*;A;<.6*<2,;.>85=<287*7-*4.A<8;9.,2.; 8:*5$../;  F  *:50:.7"";<*/:24*72;,1.,<272.70.;*66.5<>87.::7:%<=156*77=7- 2<<.25=70.7*=;-.6!*<=:12;<8:2;,1.7 =;.=627*6+=:0%=995.6.7<  F 95; F *:50:.7" C+.:.2720.8;<*;2*<2;,1.)8*7<1*:2.7:42>/D:)885802 F *:50:.7" .:2*7<1*:2**7-)8*7<1*:2*%,2.7<2/2,$.98:<;8/<1.:.*<*::2.:$../ @9.-2<287 F 

.>94>2;!  0@6;6.>6..;1*<.;@5.>6.3><:%.96.A;49E?6<4>.36?8.%G99?8.=2@?6 A;1J>5.;196;4.>   N  .6  <;4?5.@<996;@52%2?2;@.;13A@A>2?9.;1<3@52(<>91' ;@2>;.@6<;.9<;32>2;02  6;:2;?9.;1?#A2:6;2F<.;@5<:.;2;0>A?@6;4"5696==6;2Parazoanthus?=[email protected]><;2@@2>?  N  29.42)H>1  *<.;@561H?N*<.;@561.2== N=9? ;&>.6@H12*<<9<462 0<;0>I@2&<:2N :2".>@622?<292;@H>H?$26;C.91".>6?D+D6, ===9? N   2;.>@<4<9@5A6?  ;<@2<;.;6;@2>2?@6;4.??<06.@6<;<3@520>./Platypodiella picta 69;21C.>1? .;1?=2062?<3*<.;@5.>6.62><>?05A;4?6;?@6@A@%2;082;/2>4  N  6.:699<<"A02%.B2?@>299<  ??<06.@6<;/2@C22;Dentitheca habereri ;61.>6.E1>;.9<3*<<9<4E N ?=2>  62"39.;F2;@562>26;//691A;42;;.0512> .@A>:6@.>/2;2>92A05@2@;2/?@ 2?05>26/A;42;>6@@2>&5269>2EF252;126232>A;4$.?=2 K>;/2>4== N  =9? >.;06;6695<$.$  ">21.@6<;<;@52@223 36?52?6;@52/><95;>.F69>.F696.;;.9<3!02.;<4>.=5E N A766&$26:2>  "5E9<42;E<3@5256459E16B2>42;@F<.;@5613.:69E60>.996.3><:@52".06360*<<9<460.%0>6=@.  N  A766&$26:2>  ;2C3.:69E<316:6;A@6B2F<.996. *<.;@5.>6.*<<9<460.9;.9<3@526;;2.;%<062@E  

 >.E  +&,52;6:.99?<>*<.;@5.>6..;1@52?@299.@210<>.9?== N ; %E;<=?6?<3@52<;@2;@?<3@52>6@6?5A?2A:&C2;@E%6D@516@6<;(<<13.99.;1%<; <;1<;+6B, == >.E  <@2?<;*<.;@56;.2C6@512?0>6=@6<;?<3?<:2;2C42;2>."><02216;4?<3@52 *<<9<460.9%<062@E<3<;1<;   N  .11<;%5.0892@<;  .>2B6?6<;<3@52>6@6?50@6;6.2".>@&52*<.;@52.2; $2=<>@?<;@52F<<9<460.90<9920@6<;?:.126;@52&<>>2?%@>.6@?/E.11<; N  %062;@6360&>.;?.0@6<;?<3@52$
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 @-:35/@-:-:)*;17>19-)41::3#"@-:3-:1)(;%&)-4110 +221:05**1195:&4;@   C?=-;=05:-=D05A1=>5?D;2=112/;=-8>5:?41%;@?4 45:-%1- -=5:15;05A1=>5?D    =15*!;E-B-*$1591=  5>?=5.@?5;:<-??1=:>;225A1E;-:?450><1/51>5:"75:-B->8-:0 -<-:+;;8;35/-8%?@051>    -91E-75 53- 5=;>1 %@0-%$1591=  5221=1:?E;;C-:?4188-1?D<1>5: <;<@8-?5;:>;2?41E;-:?450Zoanthus sansibaricus-8;:3015:"75:-B--<-: -=5:15;05A1=>5?D   5>1$1591=  ':1C<1/?1005A1=>5?D-:0:1B><1/51>;2Epizoanthus-??-/410?;1@:5/50 B;=9[email protected]>:?4;E;-1C-/;=-885-2=;9?41#-/525/"/1-:+;;1D>     -9-=/7#  +;-:?41+;-:?4-<  :%D>?H9101>-:59-@C>-:>A1=?G.=1>;@&-.81-@ 3F:F=-801>/8->>1>01>;=0=1>1?01>31:=1>01/1>-:59-@C#=F>1:?-:?81@=>/-=-/?G=1> 1>>1:?518>1?81@=05>?=5.@?5;:0L-<=G>8-/;:>50F=-?5;:0181@=>=-<<;=?>:-?@=18>1?81@= ;=3-:5>-?5;:1?>@5A-:?8L-==-:3191:?F?-.85>0-:>81>3-81=51>0@ @>F@90L5>?;5=1!-?@=1881 <-=9581@=0F<;@5881>/;:>1=AF1>#=F/F0F0@05>/;@=>0L;@A1=?@=10@/;@=>01E;;8;3510;::F

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    Figures and Tables Table 1.;3<>:.@6<;<;?6@2?6;B2?@64.@21.><3 -<.;@5.>6.?=206:2;?0<9920@21.@2.05?6@2 Figure 1.!.=.;19<0.@6<;<3<;4?5.@<996;@52&092?>2=>2?2;@ 9<0.@6<;?C6@5>2=<>@?<3-<.;@5.>6.3><:=>2B6092?6;6;?2@>2=>2?2;@9<0.@6<;? 6;B2?@64.@216;@56??@A1E!.12C6@52;2>60!.==6;4'<<9*2??292@.9   Figure 2.&A/<>12>>.05E0;2:6;.?=2062?0<;36>:213><:<;4?5.@<99.Zoanthus sansibaricus /Zoanthus gigantus0Zoanthus kuroshio1Palythoa?=sakurajimensis2Palythoa mutuki3 Palythoa03toxica4Palythoa tuberculosa.;15Palythoa heliodiscus&0.92/.>? 0: Figure 3.&A/<>12>!.0><0;2:6;.?=2062?0<;36>:213><:<;4?5.@<99.Microzoanthus?=/ Hydrozoanthus.33gracilis0Hydrozoanthus gracilis1Antipathozoanthus?=2Epizoanthus.33

illoricatusEpizoanthus beriberEpizoanthusilloricatus Epizoanthus inazuma     Appendix Table A1.                     

20°36.552',

North outside 1

20°42.338',

North of airport 1

North outside 2

East outside

North channel 1

North of airport 3

North of airport 2

116°42.129'

side

May 24; scuba

June 4, June 5; scuba

116°55.439' 20°46.897',

May 24, June 1, June 3,

May 23; scuba

May 22; snorkel

May 22; snorkel

May 23, May 27; snorkel

May 21, June 5; SCUBA

May 21; scuba

20°42.114',

116°46.234'

20°42.886',

116°43.281'

20°42.445',

116°43.213'

20°42.472',

116°43.701'

20°42.377',

Wreck on west

116°43.895'

116°43.401'

beach

May 20; snorkel

(2016); method

Longitude (E) 20°41.960',

Date(s) investigated

Latitude (N),

Dongsha I. south

Site

Gentle reef slope (13 – 18)

Wall, cave, reef slope (5 – 40)

Sandy & rubble (10 – 20)

Sea grass meadows (intertidal – 2)

Sea grass meadows (intertidal – 2)

(intertidal – 2)

Sea grass meadows, tetrapods

Shallow reef (2 – 4)

Sandy reef slope

(intertidal – 2)

Sandy, sea grass meadows

investigated in m)

Site information (depths

27

98

1

2

0

4

38

0

1

specimens collected

# of Zoantharia

Table 1. Information on sites investigated around and within Dongsha Atoll, and number of Zoantharia specimens collected at each site.



20°39.025',

Inner atoll 1

116°51.429' 20°35.110', 116°47.471' N20°35.247', E116°47.603' N20°45.995',

1

Southeast outside

2

Southeast outside

3

Northeast outside E116°53.822'

20°35.819',

116°42.408'

20°43.512',

116°48.373'

20°42.277',

Southeast outside

North channel 2

Inner atoll 2

116°41.711'

outside 116°41.711'

20°39.025',

Southwest

116°48.741'

June 4, June 5; scuba

May 31, June 1; snorkel

scuba

May 30, May 31, June 1;

May 30; scuba

May 29; scuba

May 29; scuba

May 25; scuba

May 25; scuba

crest (intertidal – 35)

Wall, cave, gentle reef slope, reef

Shallow reef crest (intertidal – 2)

Reef slope, wall, cave (10 – 30)

Reef slope (13 – 33)

Sandy & rubble (14 – 17)

Silty lagoon, patch reef (2 – 15)

Silty lagoon, patch reef (2 – 12)

Reef slope (14 – 28)

19

35

46

22

35

0

2

46

               

                                                  

Dongsha I. south beach

Inner Atoll 1

Inner Atoll 2

East outside

 





North channel 1





   



 

     North North of North of North of North North channel airport 1 airport 2 airport 3 outside 1 outside 2 2

Northeast outside

Southeast outside 1

    

 



   

 



















Southeast outside 2

Southeast outside 3

Southwest outside

Wreck on west side



   

  

  

   





 







                       

East China Sea CHINA

Taiwan

Hong Kong

South China Sea

Kenting

Hainan

Dongsha Atoll

Luzon

reef crest (intertidal) Pratas Island

PHILIPPINES

lagoon 10 km