Diversity and Distribution of Sea-Anemones (Cnidaria : Actiniaria) in the Estuaries and Mangroves of Odisha, India
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ISSN 0375-1511 Rec. zool. Surv. India: 113(Part-3): 113-118,2013 DIVERSITY AND DISTRIBUTION OF SEA-ANEMONES (CNIDARIA : ACTINIARIA) IN THE ESTUARIES AND MANGROVES OF ODISHA, INDIA SANTANU MITRA* AND J.G. PATTANAYAK Zoological Survey of India 27, J. L. Nehru Road, Kolkata-700 016, West Bengal, India * [email protected] INTRODUCTION anemone Paracondylactis sinensis (Carlgren) was Actiniarians, popularly called as 'Sea collected by digging the sandy mud 20-25 cm around the specimens up to depth of about 70-120 Anemones', belongs to the phylum Cnidaria form cm depending on the size of the anemone. The an important group of intertidal invertebrate animals were detached from the substratum by distinguished by their habit, habitat and beautiful lifting the basal disc manually and narcotized colouration. This group was not elaborately with 1 % formalin for the period of 6-8 hours. The studied from India. However Annandale (1907 & narcotized anemones with fully expanded 1915), Carlgren (1925 & 1949), Parulekar (1968 & condition were preserved in 10% formalin for 1990), Seshyia and Cuttress (1971), Misra (1975 & further studies. 1976) and Bairagi (1998, 2001) worked on this SYSTEMATIC ACCOUNTS group and a total 40 species of sea anemones belongs to 33 genera and 17 families so far Phylum CNIDARIA Class ANTHOZOA recorded from India. During the recent faunal Subclass HEXACORALLIA survey (2010-2011) of Estuaries and Mangrove Order ACTINIARIA fringed coastal districts of Odisha, the authors Family EDW ARDSIIDAE encountered a quite good number of specimens of 1. Edwardsia jonesii Seshaiya & Cuttress, 1969 this group. After proper identification these 2. Edwardsia tinctrix Annandale, 1915 reveals 5 species belonging to 4 genera and 3 Family HALIACTIIDAE families. Earlier recorded four species are also included in this paper. A short description, 3. Pelocoetes exul Annandale, 1915 habitat-choice and distribution of a total of 9 4. Phytocoetes gangeticus Annandale, 1915* species are provided in this paper. Family DIADUMENIDAE MATERIALS AND METHODS 5. Diadumene schilleriana (Stoliczka, 1869) As the species are burrowing, the collection Family HALCAMPIDAE was done by inserting spade into the muddy or 6. Mena limnicola (Annandale, 1915)* sandy substrata without disturbing the animals 7. Mena chilkaeae (Annandale, 1915)* and lever up to the mud along with the Anemone. Specimens were picked up carefully and brought Family NEVADNEIDAE to the camp laboratory in estuarine water. Giant 8. Nevadneglauca (Annandale, 1915)* 114 Rec. zool. Surv. India Family ACTINIIDAE into capitulam, scapulus, scapus and inflatable 9. Paracondylactis sinensis (Carlgren, 1949) physa without cuticle. Capitulum thin-walled, almost transparent, smooth and without cuticle. * Not collected by the authors, diagnosis is given Scapus thick-walled, covered with thick shaggy here from the literature. rusty-red cuticle. Actinopharynx with 8 Key to the Species longitudinal ridges, siphonoglyph indistinct. Scapus covered by rusty-red cuticle ...................1 Habitat : Burrowing forms in soft muddy cuticle absent ............................................... 2 substratum of Intertidal zone. 1. Tentacles 12 ......................... Edwardsia joneshii Distribution: India: East coast: Subarnarekha Tentacles 16 .......................... Edwardsia tinctrix estuary, Chilika Lake (Odisha), South 24 Parganas 2. Tentacles branched .......................Pelocoetes exul (West Bengal), Andhra Pradesh, Tamilnadu; West Tentacles simple ................................................. 3 coast : Sunkeri (middle reaches of Kali river 3. Column short ............... ... .Diadumene schilleriana estuary), Karnataka. Column narrow and slender. .......................... .4 Remarks : Edwardsia jonesii Seshaiya & 4. Column smooth and elongated ..................... .5 Cuttress, 1969 is fairly distributed in east coast of Column short and rough ................................6 India. 5. Tentacles 36 in number, base narrow, physa like 2. Edwardsia tinctrix Annandale, 1915 ...................................... .. Phytocoetes gangeticus 1915. Edwardsia tinctrix: Annandale, Mem. Indian Mus., Tentacles 96 in number, base flattened and distinct 5: 92, pI. 16, fig. 3; pI.7, fig. 55a; pI.7a, fig. 5; text figs. ..... ... ..... .... ... .. ... .. ... .. ... .. Partacondylactis sinensis 7a-c . 6. Columns with no stinging warts .... Nevadne glauca 1968. Edwardsia tinctrix : Perulekar, J. Bombay nat. Hist. Soc., 65(1): 140, pLfigs.l. Columns with stinging warts .......................... 7 7. Stinging warts arranged in 12-16 longitudinal 1995. Edwardsia tinctrix: Misra, Wetland Ecosystem Series I: Fauna ofChilka Lake: 229. rows ................................................... .. Mena limnicola Material examined : 1 ex, Subarnapur, Stinging warts arranged in 24 longitudinal rows ........................................................... .Mena chilkaeae Subarnarekha estuary, Balasore District, Odisha; 15.iv.2011, S. Mitra & J.G. Pattanayak, Reg. No. 1. Edwardsia jonesii Seshaiya & Cuttress, 1969 P3630/1 1971. Edwardsia jonesii Sheshaiya & Cuttress, 1969. Diagnosis: Tentacles 16, smooth and arranged J. mar. bioI. Ass. India, 11(1 & 2): 73, Figs.l, 2. in two cycles of six each. Body distinctly divided 1995. Edwardsia jonesii Misra, Wetland Ecosystem Series I into capitulam, scapulus, scapus and inflatable : Fauna ofChilka Lake: 230. physa well developed at the aboral end. 1998. Edwardsia jonesi Bairagi, Cnidaria: Sea anemone. Capitulum thin-walled, almost transparent, Fauna ofWest Bengal, state fauna series, 3(Part-11): 33. smooth and without cuticle. Scapus thick-walled, 2001. Edwardsia jonesi Bairagi, Cnidaria: Sea anemone. covered with thick shaggy rusty-red cuticle. Fauna ofGodavari Estuary, Estuarine ecosystem series, Actinopharynx with 8 longitudinal ridges, 4:12. siphonoglyph indistinct. Nemathyboms in 8 Material examined: 3 ex; Balaramgadi, Burha longitudinal rows on the col umn. Balanga estuary, Balasore District, Odisha; Habitat : Burrowing forms in soft muddy 13.iv.2011, S. Mitra & J.G. Pattanayak, Reg. No. substratum of Intertidal zone. P3628/1; 2 ex, Talsari, Subarnarekha estuary, Distribution : Endemic in India : East coast: Balasore District, Odisha; 16.iv.2011, S. Mitra & Subarnarekha estuary, Chilika lagoon (Odisha), J.G. Pattanayak, Reg. No. P3629/1. Hugli-Matla Estuary( West Bengal) ; West coast: Diagnosis: Tentacles 12, smooth and arranged Goa and Maharashtra; Sunkeri (middle reaches of in two cycles of six each. Body distinctly divided Kali river estuary), Karnataka. MITRA & PATTANA YAK: Diversity and Distribution of Sea-anemones 115 Remarks: Edwardsia tinctrix Annandale, 1915 is Diagnosis : Tentacles simple, slender, 36 in fairly distributed in east coast and west coast of number. Column narrow and slender, smooth India. with longitudinal rows of cinclides, sphincter not visible. Base narrow physa-like. Family HALIACTIIDAE Distribution: India: Chilka lagoon (Orissa); 3. Pelocoetes exul Annandale, 1915 South 24 parganas and Gangetic delta (West 1915. Pelocoetes exul Annandale, Mem. Ind. Mus., 5:86, Bengal), Tamilnadu, Kerala, Goa and Maharastra. p1.6, fig.1; p1.7, figs. 3, 3a, 3b; text fig.5. Remarks: This species is very common in the 1995. Pelocoetes exul : Misra, Wetland Ecosystem Series I : estuaries and found in the muddy shore near the Fauna ofChilka Lake: 230-231. estuarine mouth. But this species is not collected 2001. Pelocoetes exul : Bairagi, Estuarine Ecosystem Series, during the present surveys. Diagnosis is 4: Fauna ofGodavari Estuary: 12 incorporated from the literature. Material examined : 2 ex; Bandar, Devi river Family DIADUMENIDAE estuary, Puri District, Odisha; 02.iv. 2011, S. Mitra & J.G. Pattanayak, Reg. No. P3631/1; 2 ex; 5. Diadumene schilleriana (Stoliczka,1869) Balaramgadi, Burha Balanga estuary, Balasore 1869. Sagaritta schilleriana Stoliczka, J. Asiat. Soc. Bengal, District, Odisha; 13.iv.2011, S. Mitra & J.G. 38(2): 31, pIs. 10, 11. Pattanayak, Reg. No. P3632/1; 4 ex, Subarnapur, 1915. Metridium schillerianum : Annandale, Mem. Ind. Subarnarekha estuary, Balasore District, Odisha; Mus., 5:76, p1.7 fig.1 15.iv.2011, S. Mitra & J.G. Pattanayak, Reg. No. 1998. Diadumene schilleriana : Bairagi, Fauna of West P3633/1. Bengal, Part-11: 37-38, fig. I-A, B. Diagnosis : Basal disc reduced. Bluntly Material examined: 1 ex; Bandar, Devi river tapering and without physa. Column elongated. estuary, Puri District, Odisha; 02.iv.2011, S. Longitudinal rows of nematocyst batteries Mitra & J.G. Pattanayak, Reg. No. P3634/1; 1 ex; alternating with cinclides on column. Tentacles Balaramgadi, Burha Balanga estuary, Balasore are branched hexamerously arranged (6 + District, Odisha; 13.iv.2011, S. Mitra & J.G. 6+12+24+48, the last cycle more or less complete) Pattanayak, Reg. No. P3635/1; 3 ex, Subarnapur, oral disc lobed. Subarnarekha estuary, Balasore District, Odisha; 15.iv.2011, S. Mitra & J.G. Pattanayak, Habitat : Soft mud burrowing form in the Reg. No. P3636/1. 2 ex; Hukitola Light house, Intertidal zone, found at mudflat just beside the Mahanadi Estuary, Cuttack District, Odisha; narrow creeks of the middle tidal area. 02.iv.2011, S. Mitra & J.G. Pattanayak, Reg. No. Distribution : India: Subarnarekha estuary P3637/1. (Odisha), South 24 parganas and Gangetic delta Diagnosis : Body divided into Scapus and (West Bengal), Tamilnadu., Maharastra, Kerala, Capitulum. Capus with Cinclides and Capitulum Goa. with collar. Body very short, 12-19 mm. in length Remarks: