Indian Journal of Geo-Marine Sciences

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Spatiotemporal Variations in the Population Dynamics of a Few Prominent Brittle Star Species (Echinodermata : Ophiuroidea) from the Intertidal Flat of the Veraval Coast, Gujarat, India


Affiliations
1 Department of Biosciences, Saurashtra University, Rajkot, Gujarat – 360 005, India
 

The present communication reports the spatiotemporal variation in the population dynamics of three prominent Ophiuroidea species: Amphipholis squamata, Ophiactis savignyi and Ophiocomella sexradia at the rocky intertidal zone at Veraval (21°35’ N, 69°36’ E) Gujarat, off the Arabian Sea. The two sampling areas with different substratum and community structures were investigated from April 2019 to March 2020. Brittle stars were found inhabited in the coralline bed, zoanthid bed, algal holdfast, rock pool crevices and underneath rocks in the studied coastal areas. A. squamata was the most abundant species followed by O. savignyi and O. sexradia at the Veraval coast. The current study described a few remarkable revelations between the patches of coralline algae and Ophiuroidea abundance. Brittle star population revealed major spatial variations between both sampling sites. Cluster analysis and nMDS support population abundance in a seasonal pattern distribution.

Keywords

Intertidal, Ophiuroidea, Population Status, Veraval.
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  • Rios-Jara E, Galvan-Villa C M & Solis-Marin F A, Echinoderms from Isla Isabel National Park, Nayarit, Mexico, Rev Mex Biodivers, 79 (2008) 131–141.

  • Jones C G, Lawton J H & Shachak M, Organisms as ecosystem engineers, Oikos, 69 (1994) 373–386. doi:10.1007/978-1-4612-4018-1_14

  • Hastings A, Byers J E, Crooks J A, Cuddington K, Jones C G, et al., Ecosystem engineering in space and time, Ecol Lett, 10 (2006) 153–164. doi:10.1111/j.1461-0248.2006.00997.x

  • Wild C, Hoegh-Guldberg O, Naumann M S, Colombo-Pallotta M F, Ateweberhan M, et al., Climate change impedes scleractinian corals as primary reef ecosystem engineers, Mar Freshwater Res, 62 (2011) 205–215. doi:10.1071/MF10254

  • Birkeland C, The influence of echinoderms on coral-reef communities, Echinoderm Stud, 3 (1989) 1–79.

  • Ambrose W G Jr, Effects of predation and disturbance by ophiuroids on soft-bottom community structure in Oslofjord - Results of a mesocosm study, Mar Ecol Prog Ser, 97 (1993) 225–236. doi:10.3354/meps097225

  • Glynn P W & Enochs I C, Invertebrates and their roles in coral reef ecosystems, In: Coral Reefs: An Ecosystem in Transition, edited by Dubinsky Z & Stambler N, (Springer Press, Dordrecht), 2011, pp. 273–325. doi:10.1007/978-94-007-0114-4_18

  • Hyman L H, The invertebrates: Echinodermata, (McGraw-Hill, New York), 1955, pp. 763.

  • Tyler P A, Deep-sea ophiuroids, Oceanogr Mar Biol, 18 (1980) 125–153.

  • Grassle J F, Sanders H L, Hessler R R, Rowe G T & Mclellan T, Pattern and zonation: a study of the bathyal megafauna using the research submersible Alvin, Deep-Sea Res, 22 (1975) 457–481.

  • Smith C R & Hamilton S C, Epibenthic megafauna of a bathyal basin of southern California: patterns of abundance, biomass, and dispersion, Deep-Sea Res, 30 (1983) 907–928.

  • Carey A G, Stein D L & Rona P L, Benthos of the Gorda Ridge axial valley (NE Pacific Ocean): Taxonomic composition and trends in distribution, Prog Oceanogr, 24 (1990) 47–57.

  • Carey A G, Taghon G L, Stein D L & Rona P A, Distributional ecology of benthic megaepifauna and fishes in Gorda Ridge Axial Valley, In: Gorda Ridge: A Seafloor Spreading Center in the United States Exclusive Economic Zone, New York, edited by Mc Murray G R, (Springer) 1990, pp. 16.

  • Gage J D & Tyler P A, Deep-Sea Biology: A Natural History of Organisms at the Deep-sea Floor, (Cambridge University Press, New York), 1991, pp. 504.

  • James D B, Research on Indian echinoderms - A review, Mar Biol Assoc India, 25 (1-2) (1983) 91–108.

  • Parameswaran U V, Abdul Jaleel K U, Gopal A, Sanjeevan V N & Anil Kumar V, On an unusual shallow occurrence of the deep-sea brittle star Ophiomyces delata in the Duncan Passage, Andaman Islands (Northern Indian Ocean), Mar Biodivers, 36 (1) (2016) 151-156.

  • James D B, Studies on Indian Echinodermata-4 On the brittle-stars Amphioplus gravelyi sp. nov., and Amphioplus depressus (Ljungman) from the Indian Coasts, Mar Biol Assoc India, 12 (1971) 139–145.

  • Gohil B & Kundu R, Diversity of the intertidal macrofauna at west coast of Gujarat, India, Life Sciences Leaflets, 12 (2012) 135–145.

  • Bhadja P, Poriya P & Kundu R, Community structure and distribution pattern of intertidal invertebrate macrofauna at some anthropogenically influenced coasts of Kathiawar peninsula, India, Adv Ecol, (2014) p. 547395. http://dx.doi.org/10.1155/2014/547395

  • Poriya P, Ecological status of the intertidal macrofaunal assemblage in a rocky intertidal coast, Gujarat, Ph.D. thesis, Saurashtra University, Gujarat, 2015.

  • Stephenson T A & Stephenson A, The universal features of zonation between tide-marks on rocky coasts, J Ecol, 37 (1949) 289–305.

  • Poriya P & Kundu R, Interaction between two prominent benthic communities in intertidal ecosystem of Kathiawar peninsula, Int J Ecol Envi Sci, 42 (4) (2016) 287–293.

  • Mladenov P V & Emson R H, Density, size structure and reproductive characteristics of fissiparous brittle stars in algae and sponges: evidence for interpopulational variation in levels of sexual and asexual reproduction, Mar Ecol Prog Ser, 42 (1988) 181–194.

  • Vaghela A, Bhadja P, Ramoliya J, Patel N & Kundu R, Seasonal variations in the water quality, diversity and population ecology of intertidal macrofauna at an industrially influenced coast, Water Sci Technol, 61 (6) (2010) 1505–1514.

  • Bhadja P & Kundu R, Status of the seawater quality at few industrially important coasts of Gujarat (India) off Arabian Sea, Indian J Geo-Mar Sci, 41 (1) (2012) 954–961.

  • Chao S M & Tsai S S, Reproduction and population dynamics of the fissiparous brittle star Ophiactis savignyi (Echinodermata: Ophiuroidea), Mar Biol, 124 (1995) 77–83.

  • Mladenov P V, Emson R H, Wilkie I C & Colpit L V, Asexual reproduction in the West Indian brittle star Ophiocomella ophiactoides (H L Clark) (Echinodermata: ophiuroidea), J Exp Mar Biol Ecol, 12 (1983) l–23.

  • Emson R H & Wilkie I C, Fission and autotomy in echinoderms, Oceanogr Mar Biol Ann Rev, 18 (1980) 155–250.

  • Mladenov P V & Burke R D, Echinodermata: Asexual Propagation, In: Reproductive biology of invertebrates, Vol VI, Part B, Asexual Propagation and Reproductive Strategies, edited by Adiyodi K G & Adiyodi R G, (Oxford and IBH Publishing Co. Pvt. Ltd., New Delhi, Bombay, Calcutta), 1994, pp. 339–383.

  • Rumrill S S, Contrasting Reproductive Patterns among Ophiuroidea, MSc Thesis, University of California, Santa Cruz, 1982.

  • Emson R H & Foote J, Environmental tolerances and other adaptive features of two intertidal rock pool echinoderms, In: Echinoderms: Present and Past, edited By Jangoux M, (A. A. Balkema, Rotterdam), 1980, pp. 163–169.

  • Boffi E, Ecological aspect of ophiuroids from the phytal of S.W. Atlantic Ocean warm waters, Mar Biol, 15 (1972) 316–328.


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  • Spatiotemporal Variations in the Population Dynamics of a Few Prominent Brittle Star Species (Echinodermata : Ophiuroidea) from the Intertidal Flat of the Veraval Coast, Gujarat, India

Abstract Views: 167  |  PDF Views: 91

Authors

H. I. Baroliya
Department of Biosciences, Saurashtra University, Rajkot, Gujarat – 360 005, India
R. S. Kundu
Department of Biosciences, Saurashtra University, Rajkot, Gujarat – 360 005, India

Abstract


The present communication reports the spatiotemporal variation in the population dynamics of three prominent Ophiuroidea species: Amphipholis squamata, Ophiactis savignyi and Ophiocomella sexradia at the rocky intertidal zone at Veraval (21°35’ N, 69°36’ E) Gujarat, off the Arabian Sea. The two sampling areas with different substratum and community structures were investigated from April 2019 to March 2020. Brittle stars were found inhabited in the coralline bed, zoanthid bed, algal holdfast, rock pool crevices and underneath rocks in the studied coastal areas. A. squamata was the most abundant species followed by O. savignyi and O. sexradia at the Veraval coast. The current study described a few remarkable revelations between the patches of coralline algae and Ophiuroidea abundance. Brittle star population revealed major spatial variations between both sampling sites. Cluster analysis and nMDS support population abundance in a seasonal pattern distribution.

Keywords


Intertidal, Ophiuroidea, Population Status, Veraval.

References