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Pontoniine Shrimps Associated with Cnidarians: New Records and Hst of Species from Coastal Waters of Viet Nam

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Pontoniine Shrimps Associated with Cnidarians: New Records and Hst of Species from Coastal Waters of Viet Nam Arthropoda Selecta 13 (4): 199-218 ARTHROPODA SELECTA, 2004 Pontoniine shrimps associated with cnidarians: new records and Hst of species from coastal waters of Viet Nam KpeBeTKH-nOHTOHHHHbl aCCOIJHHpOBaHHbie C KHIUeHHOnOAOCTHblMH: HOBbie HaXOAKH H CnHCOK BHAOB H3 npH6pe>KHbIX BOA BbeTHaMa Ivan N. Marin^ Temir A. Britayev^ & Arthur Anker^ M.H. MapHH^ T.A. BpHxaeB^ H A. AHKep^ 'Laboratory of Ecology and Morphology of Marine Invertebrates, A.N. Severtzov Institute of Ecology and Evolution RAS, Leninsky prosp., 33, Moscow 117071 Russia. E-mail: [email protected] Jla5opaTopHa SKOnorHH H Mop<J)OJiorHH MopcKHX 5ecno3BOHOHHbix, HncTHTyT npo5jieM SKOnorHH H SBOJIIOIJHH HM. A.H. CcBepijoBa PAH, JleHHHCKHH npocncKT, 33, MocKBa 117071 Poccna. ^Department of Biological Sciences, University of Alberta, Edmonton Canada T6G 2E1. E-mail: [email protected] OaKyjibTCT 5HOJiorHH, ynHBepcHTeT niTaxa Ajib5epTa, S^MOHTOH Kanaka T6G 2E1. KEY WORDS: fauna, shrimps, Pontoniinae, Viet Nam, symbionts, cnidarian-associated. KJIIOHEBtlE CJIOBA: (jjayna, KpcBCTKH, Pontoniinae, BtcTnaM, CHMGnonTti, KHmcHnononocTntie. ABSTRACT. In the paper, the descriptions of 10 sp. n iiepnanTycoM Cerianthus sp. B c6opax c Kononnn species of cnidarian-associated pontoniine shrimps, new KopanjioB o6napy>Keno TaioKC Tpn Bn;ia KpcBCTOK n3 for the fauna of Viet Nam, are given. Coralliocaris pojiaPericlimenaeus (P. hecate, P. rhodope u P. quadri­ nudirostris and Philarius lifuensis are apparently associ­ dentatus), KOToptie npe;inoi[o>KnTein.no ne SLBJISLIOTCSL ated with acroporid corals, and Harpiliopsis spinigera is cnM6nonTaMn RnmcHnononocTntix, apaccMaTpnBaioTCH associated with pocilloporid corals. Palaemonella rotu­ KaK cnM6nonTi>i ry6oK n TynnxaT, npnKpenjiaioninxcH K mama axe found on both acroporid and pocilloporid KOJionnHM KopanjioB. TaKnM o6pa30M, c yncTOM namnx corals. Three species of the genus Periclimenes, P. ele- naxo;iOK, (jjayna BtcTnaMa nacnnTBiBacTca 18 Bn;iOB gans, P. ornatus and P. magnificus, are associated with KpcBCTOK-nonTonnnn, oGnnraTno accoiinnpoBanntix c the anemones: the first species with Heteractis crispa and KopanjiaMn n 5 Bn;iOB - c ancMonann. Hpe/iCTaBJien Actinodendron sp, the second with//eteracft'^ crispa and o63op ;ianni>ix no nonTonnnnaM accoiinnpoBanntiM c the third with burrowing Macrodactyla sp. and Cerian- KnmcHnononjiocTnBiMn BO BtcTnaMC. thus sp. Three Periclimenaeus species {P. hecate, P. rhodope andP. quadridentatus) were also collected from Introduction corals, but it is considered that they are symbionts of the sponges and tunicates attached to coral colonies. Conse­ Symbiotic crustaceans associated with cnidarians quently, the fauna of Viet Namisupdated to 20 species of are widespread in the World Ocean, being especially pontoniine shrimps associated with scleractinian corals numerous in shallow-water tropical seas [Bruce, 1976b; and 5 species with sea anemones. A review of the known Castro, 1976; Vader, 1972, 1983]. Among cnidarian data on the associations of pontoniine shrimps with Cni- symbionts, caridean shrimps belonging to the family daria in Viet Nam is also presented. Palaemonidae (subfamily Pontoniinae) are dominant [Garth, 1974; Bruce, 1976b; Patton, 1976, 1994]. The PE3IOME. B pa6oTe npHBo;iHTCH onncanne 10 BH;IOB amount of cnidarian symbionts in other caridean families KpcBCTOK-nonTonnnn, noBtix ;iJia (jjaynti BtcTnaMa, (e.g. Hippolytidae and Alpheidae) are significantly lower accoiinnpoBanntix c npe/iCTaBHTCnHMH KHmenno- [Patton, 1963; Bruce, 1972d; Garth, 1974; Knowlton & noJiocTntix. KpcBCTKH Coralliocaris nudirostris M Philar­ Keller, 1983,1985; Goh & Chou, 1994; Goh et al., 1999; ius lifuensis accoiinnpoBanti c KopajuiaMH-aKponopn/iaMH, Spotte & Bubucis, 1996] and are particularly scare among Harpiliopsis spinigera—CKopairaaMH-noiiHJUionopH/iaMH. Pandalidae and Rhynchocinetidae [Bruce, 1972c, 1976b, Palaemonella rotumama o6napy>Keni>i B accoiinaiinn c 1983b; Howard, 1982; Stevens & Anderson, 2000]. In this aKponopn/intiMH n noiiHiinonopH;ini>iMH KopanjiaMH. Tpn associations all cnidarian taxa may be involved as hosts, BHTia H3 poTia Periclimenes: P. ornatus, P. elegans n P. excluding Ctenophores andhydroidmedusas [Bruce, 1969a, magnificus, onncanti Baccoiinaiinn c ancMonaMn: nepBtie 1972c, 1973, 1976a, 1977a; Criales, 1980; Patton, 1963; BH;I C aKTHnnen Heteractis crispa n aKTHno;ien;iponoM Spotte & Bubucis, 1996; Spotte etal, 1991,1994; Goh & Actinodendron sp., BTopon c aKTHnnen Heteractis crispa Chou, 1994; Goh etal, 1999; Williams & Williams, 1982; n TpcTnn Bn;i c aaptiBaioniencH aKTmm.eVi.Macrodactyla Zibrowius, 1984]. 200 I.N. Marin, T.A. Britayev & A. Anker The fauna of symbiotic pontoniine shrimps in the & Fakhrutdinov, 1994] have been published. These last coastal waters of Viet Nam is probably similar to that of the papers were based on the collections of T.A. Britayev in adjacent regions such as Singapore, Hong-Kong, Philip­ the vicinity of Nhatrang city. However, the current list of pines and the south islands of Japan [Bruce, 1993] but it is cnidarian-associated pontoniine shrimps in Viet Nam in­ poorly known. The first data on symbiotic pontoniine cluding 15 species can not be considered as complete. shrimps from Viet Nam were published at the beginning of This paper provides a list of symbiotic pontoniine the last century [Kemp, 1922]. More recently, an annotated shrimps associated with cnidarians in the Bay of Nha­ list of symbiotic shrimps [Bruce, 1993] and some data on trang (south central Viet Nam), as well as descriptions the ecology of shrimps associated with bivalves [Britayev often species new for the Vietnamese fauna. 12° 10' Mung Island 10#' 15' Fig. 1. Study area of the South China Sea. Circles indicate sampHng locaHties (stations). Pwc. 1. MsynaeMbm pawon B KDa-cHO-KwTawcKOM Mope. Kpya-cKaMW OTMeieHM TOHKW c6opoB (cTaHgww). IVIaterial and IVIethods (11,2,9,15 and 12 colonies, respectively). The samples were collected by SCUBA diving and wrapped in gauze A total of 49 colonies of scleractinian corals with each colony separately. Once in the laboratory the col­ their symbionts were collected in Viet Nam, the Bay of onies were measured (length, width and height), photo­ Nhatrang (Fig. 1), in 1985, 1987, 1989, 1990 and 2002 graphed and, after removing of large symbionts, broken Pontoniine shrimps associated with cnidarians 201 to extract cryptic species. More than 900 specimens of REMARKS. Coralliocaris nudirostris clearly differs from symbionts were extracted from the corals. Among them, the other species of the genus from Nhatrang Bay, C. superba about 400 specimens of crabs, 350 shrimps, 20 anomu- (Dana), C. graminea (Dana), C. venusta Kemp, in the follow­ rans and about 150 specimens from other taxa. The 35 ing features: rostrum unarmed and short, not overreaching penultimate segment of antennules and dactylus of 2nd pereio­ coral colonies were identified as Acropora sp., 9 as pod normal, with extensor margin smoothly sinuous. Pocillopora sp., 2 asSeriatopora sp. and 3 asStylopho- Coralliocaris nudirostris most clearly resembles C. brevi- rapistillata. The actinians (Cerianthus sp., Actinoden- rostris Borradaile, 1898, which has similar unarmed rostrum dron sp., Heteractis crispa, H. aurora, H. magnifica, and smoothly sinuous extensor margin of dactylus of 2nd Stichodactyla haddoni, S. mertensii and Entacmaea pereipod, but this species has not yet been indicated in Viet quadricolor) were observed in situ, photographed and Nam. Both species differ in the form both of the basal the symbiont specimens were caught with scoop-net and antennular segment and the disto-lateral lobe of this segment. kept in plastic bags. The crustaceans were fixed in 4% The latter is weak, without distal tooth, and the form of the buffered sea water formol solution for 2-3 days and then segment is much wider than long in C. brevirostris. Besides, preserved in 70% ethanol. Shrimps were identified un­ the rostrum is longer and overreaches the basal segment of der a light microscope MB S-10 and drawn with the help the antennules in C. nudirostris (rostrum just reaching the of a camera lucida. All specimens are deposited in the distal edge of the antennular peduncle in ovigerous females). collection of the Laboratory of Ecology and Morpholo­ HOST. All Nhatrang specimens were collected from gy of Marine Invertebrates, A.N. Severtzov Institute of colonies of Acropora sp. The species has always been reported in association with scleractinian corals of the genus Ecology and Evolution RAS. Acropora [Bruce, 1977a, 1998]. DISTRIBUTION. Tam Island, Nhatrang Bay, Viet Nam. Also known from the Indian Ocean: Red Sea, coasts of Systematic account Kenya, Tanzania and Zanzibar, La Reunion, Seychelles Is­ lands, IMauritius, IMaldives Islands, and from the Pacific Ocean: Japan, IMarshall and Society Islands, Kiribati (Gilbert Family Palaemonidae Rafinesque, 1815 Islands), Tahiti. Subfamily Pontoniinae Rafinesque, 1815 Coralliocaris nudirostris (Heller, 1861) Harpiliopsis spinigera (Ortmann, 1890) Fig. 2a-n. Fig. 3a-j. Oedipus nudirostris Heller, 1861: 27, pi. 3, fig. 25. Anchistia spinigera Ortmann, 1890: 511, pi.36, fig.23 [type locality: Samoa]. Coralliocaris tahitoei Boone, 1935: 180, fig. 12, pi. 49 [type locality: PoineVenus reef, Tahiti] Harpilius depressus var. gracilis Kemp, 1922: 234, fig. 71 [type locality: Andaman Islands]. Coralliocaris nudirostris Borradaile, 1917: 382, 384. Bruce, 1972b: 262, fig. 2. Harpiliopsis depressus var. spinigerus. — Holthuis, 1952: 184. Harpiliopsis spinigerus. — Bruce, 1976c:
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