Biodiversity of Meiofauna in thee Intertidal Khe Nhan Mudflat, Can Gio Mangrove Forest, Vietnam with Special Emphasis on Free Living Nematodes

  • Xuan, Quang-Ngo (Department of Environmental Management and Technology, Institute of Tropical Biology) ;
  • Vanreusel, Ann (Biology Department, Marine Biology Section, Ghent University) ;
  • Thanh, Nguyen Vu (Department of Nematology, Institute of Ecology and Biological Resources, Vietnamese Academy of science and Technology) ;
  • Smol, Nic (Postgraduate International Nematology Course, Vakgroep Biologie, Ghent University)
  • Published : 2007.09.30

Abstract

The ecological aspect of meiofaunal communities in Can Gio mangrove forest, Ho Chi Minh city, Vietnam has not been investigated before. The composition, distribution, density and biodiversity of meiofaunal communities were studied along an intertidal transect at the Khe Nhan mudflat. Each time, three replicate samples were collected in four stations along a transect following the water line from low tide level up to the mangrove forest edge. In total, 18 meiofaunal taxa were found with the dominant taxa belonging to Nematoda, Copepoda, Sarcomastigophora and Polychaeta. The densities of meiofauna ranged from $1156inds/10cm^2$ to $2082inds/10cm^2$. The increase in densities from the mangrove forest edge towards the low water line was significant Along the mudflat transect, the biodiversity (expressed by different indices) was relatively high at different taxonomic levels but did not vary significantly along the mudflat except for taxa richness. Eighty nematode genera belonging to 24 families with Comesomatidae having the highest abundance 33.8 % were found. Theristus and Neochromadora decreased in densities from the lower water line towards the mangrove forest edge, while Paracomesoma and Hopperia are typical and more abundant at the middle of the mudflat. Halalaimus increased from high on the mudflat to the low water line.

Keywords

References

  1. Alongi, D.M. 1987a. Inter estuary vananon and intertidal zonation of the free-living nematode communities in tropical mangrove systems. Mar. Ecol. Prog. Sen, 40, 103-114 https://doi.org/10.3354/meps040103
  2. Alongi, D.M. 1987b. Intertidal zonation and seasonality of meiobenthos in tropical mangrove estuaries. Mar. Biol., 95, 447-458 https://doi.org/10.1007/BF00409574
  3. Alongi, D.M. 1987c. The influence of mangrove - derived tannins on intertidal meiobenthos in tropical estuarine. Oecologia, 71, 537-540 https://doi.org/10.1007/BF00379293
  4. Alongi, D.M. 1989. The role of soft-bottom benthic communities in tropical mangrove and coral reef ecosystems. Rev. Aquat. Sci., 1, 243-280
  5. Alongi, D.M. 1998. Coastal ecosystem processes. CRC press, Boca Raton, Florida. 419p
  6. Austen, M., C. Widdicombe, and S. Villano-Pitacco. 1998. Effects of biological disturbance on diversity and structure of meiobenthic nematode communities. Mar. Ecol. Prog. Sen, 174, 233-246 https://doi.org/10.3354/meps174233
  7. Boucher, G and P.J.D. Lambshead. 1995. Ecological biodiversity of Marine nematodes in samples from Temperate, Tropical and Deep-sea regions. Conserv. Biol., 9, 1594-1604 https://doi.org/10.1046/j.1523-1739.1995.09061594.x
  8. Commito, J. A. and G Tita, 2002. Differential dispersal rates in an intertidal meiofauna assemblage. J. Exp. Mar. Biol. Ecol., 268, 237-256 https://doi.org/10.1016/S0022-0981(01)00386-0
  9. Coull, E.C. 1999. Role of meiofauna in estuary soft-bottom habitats. Aust. J. Ecol., 24, 327-343 https://doi.org/10.1046/j.1442-9993.1999.00979.x
  10. Dittmann, S. 2001. Abundance and distribution of small infauna in mangroves of Missionary Bay, North Queensland, Australia. Rev. Biol. Trop., 49, 535-544
  11. Doan Canh and N.V. Thanh. 2000. Freeliving nematodes at the brackish water estuary of the Thi Vai river (Dong Nai province). J. Biology, 22, 6-9
  12. Dye, A.H. 1983. Vertical and horizontal distribution of meiofauna in mangrove sediments in Transkei, Southern Africa. Estuar. Coast. Shelf Sci., 16, 591-598 https://doi.org/10.1016/0272-7714(83)90073-2
  13. Gagarin, V.G and N.Y. Thanh. 2004a. New species of the genera Chronogaster (Araeolaimida: Chronogasteridae) from Vietnam (Nematoda). Zoosystematica Rossica, 12, 145-149
  14. Gagarin, V.G and N.Y. Thanh. 2004b. Four species of the genus Halalaimus de Man, 1888 (Nematoda: Enoplida) from Mekong River Delta, Vietnam. Int. J. Nematol., 14(2), 213-220
  15. Gagarin, V.G. and N.Y. Thanh. 2006a. Three new species of the genus Hopperia (Nematoda, Comesomatidae) from mangroves of the Mekong river delta (Vietnam). Zhuologischeskyi Journal, 85(1), 18-27
  16. Gagarin, V.G and N.V. Thanh. 2006b. 3 new species of freeliving Nematodes (Nematoda) of the family Axonolaimidae from the Mekong river delta (Vietnam). Zhuologischeskyi Journal, 85(6),675-681
  17. Gagarin, V.G and N.V. Thanh. 2006. Three new species of freeliving nematodes of the family Comesomatidae from Mekong River, Vietnam (Nematoda, Monhysterida). Zoosystematica Rossica, 15(2), 1-10
  18. Gerlach, S.A. 1971. On the importance of marine meiofauna for benthos communities. Oecologia, 6, 351-369
  19. Gee, J.M. and P.J. Somerfield. 1997. Do mangrove diversity and leaf litter decay promote meiofaunal diversity? J. Exp. Mar. BioI. EcoI., 218, 13-33 https://doi.org/10.1016/S0022-0981(97)00065-8
  20. Gwyther, J. and P.G. Fairweather. 2002. Colonisation by epibionts and meiofauna on real and mimic pneumatophores in a cool temperate mangrove habitat. Mar. Ecol. Prog. Ser., 229, 137-149 https://doi.org/10.3354/meps229137
  21. Gwyther, J. 2003. Nematode assemblages from Avicennia marina leaf litter in a temperate mangrove forest in south-eastern Australia. Mar. Biol., 142, 289-297 https://doi.org/10.1007/s00227-002-0944-0
  22. Gourbault, N., R.M. Warwick, and M.N. Helleouet, 1998. Spatial and temporal variability in the composition and stmcture of meiobenthic assemblages (especially nematodes) in tropical beaches (Guadeloupe, FWI). Cah. BioI. Mar., 39, 29-39
  23. Grassle, F.J. 1991. Deep-sea beniliic Biodiversity. BioScience, 41, 464-469 https://doi.org/10.2307/1311803
  24. Heip, C, M. Vmcx, N. Smol, and G. Vranken. 1982. The systematic and Ecology of Free-living Marine Nematodes. Helminthol. Abstrac. Ser. B, Plant Nematol. Ser. B, 51, 1-31
  25. Heip, C., M. Vmcx, and G Vranken. 1985. The ecology of marine nematodes. Oceanogr. Mar. Biol. Ann. Rev., 23, 399-489
  26. Hendelberg, M. and P. Jensen. 1993. Vertical distribution of the nematode fauna in a coastal sediment influenced by seasonal hypoxia in the bottom water. Ophelia, 37, 83-94 https://doi.org/10.1080/00785326.1993.10429909
  27. Higgins, R.P and H. Thiel. 1988. Introduction to the study of meiofauna. Smithsonian Institution press, Washington, D. C. 488p
  28. Hodda, M.1990. Variation in estuarine littoral Nematode Population over 3 spatial scales. Estuar. Coast. Shelf Sci., 30, 325-340 https://doi.org/10.1016/0272-7714(90)90001-8
  29. Hodda, M. and W.L. Nicholas. 1985. Meiofauna Associated with Mangroves in the Hunter River Estuary and Fullerton Cove, South-eastern Australia. Austr. Mar. Freshw. Res., 36, 41-50 https://doi.org/10.1071/MF9850041
  30. Hodda, M. and W.L. Nicholas. 1986. Temporal changes in littoral meiofauna from the Hunter River estuary, Austr. Mar. Freshw. Res., 37, 729-741 https://doi.org/10.1071/MF9860729
  31. Hodda, M. and W.L. Nicholas.1987. Free-living Nematodes from mangroves. The Beagle, Records of the Northern Territory Museum of Arts and Sciences, 4, 7-10
  32. Hopper, B.E., J.W. Fell, and R.C. Cefalu. 1973. Effect of temperature on life cycles of nematode associated with mangrove (Rhizophora mangle) detrital system. Mar. Biol., 23, 293-296 https://doi.org/10.1007/BF00389336
  33. Jensen, P. 1987. Feeding ecology of free-living aquatic nematodes. Mar. Ecol. Prog. Sen, 35, 187-196 https://doi.org/10.3354/meps035187
  34. Kondalarao, B. 1984. Distribution of meiobenthic harpacticoid copepods in Gautami-Godavari estuarine system. Indian J. Mar. Sci., 13, 80-84
  35. Krishnamurthy, K., A.M.A. Sultan, and M.J.P. Jeyseelan. 1984. Structure and dynamics of the aquatic food web community with special reference to nematodes in mangrove ecosystems. Proc. As. Symp. Mangr. Env. Res. Manag., 429-452
  36. Lalana - Rueda R. and F. Gosselck. 1986. Investigation of the benthos of mangrove coastal lagoons in Southern Cuba. Int. Revue der Gesamte. Hydrobiol., 71, 779-794 https://doi.org/10.1002/iroh.19860710605
  37. Lai Phu Hoang, L.P., NV Thanh, and Ulrich Saint-Paul. 2005. Preliminary investigating result about the meiobenthic invertebrates in Can Gio mangrove, Ho Chi Minh City. The 4th National Conference on life Sciences Hanoi State Medicine University, November 3, 2005. Science and Technics Publ. House, Hanoi. 169-172
  38. Lambshead, P.J.D., H.M. Platt, and K.M. Shaw. 1983. Detection of differences among assemblages of marine benthic species based on an assessment of dominance and diversity. J. Nat. Hist., 17,859-874 https://doi.org/10.1080/00222938300770671
  39. Larnbshead, P.J.D. 1993. Recent developments in marine benthic biodiversity research. Oceanis, 19, 5-24
  40. Lorenzen, S. 1994. The Phylogenetic Systematics of Free-living Nematodes. Ray Society, London. 383p
  41. Nguyen Dinh Tu. 2004. Biodiversity of nematodes in Ha Long Bay, Vietnam. M.S. Thesis, Ghent University, Belgium. 75p
  42. Nguyen, T., NV Thanh, and Gagarin 2004. Two new brackish water nematode species of the genus Daptonema Cobb, 1920 (Nematoda: Monhysterida) from Can Gio mangrove. Proceedings, The 2004th national Conference on Live Sciences Thai Nguyen University, September 23, 2004, Vietnam. 249-256
  43. Nicholas, W.L., J.A Elek, A.C. Stewart, and T.G Marples. 1991. The nematode fauna of a temperate Australian mangrove mudflat; its population density, diversity and distribution. Hydrobiologia, 209, 13-27 https://doi.org/10.1007/BF00006714
  44. Olafsson, E. 1995. Meiobenthos in mangrove areas in eastern Africa with emphasis on assemblage structure of free-living marine nematodes. Hydrobiologia, 312, 47-57 https://doi.org/10.1007/BF00018886
  45. Olafsson. E. 2000. Meiobenthos of hypersaline tropical mangrove sediment in relation to spring tide inundation. Hydrobiologia, 426, 57-64 https://doi.org/10.1023/A:1003992211656
  46. Olga, N.P., J.A Trebukhova. 2006. Meiobenthos in Nha Trang Bay of the South China Sea (Vietnam). Ocean Sci. J., 41(3), 139-148 https://doi.org/10.1007/BF03022419
  47. Platt, H.M. 1981. Meiofauna dynamics and the origin of the metazoa p. 207-216. In: The Evolving Biosphere, ed. by, Forey P.L. University Press, Cambridge, UK
  48. Platt, H.M. and R.M. Warwick. 1983. Free-living Marine Nematodes. Part I. British Enoplids. Synopses of the British Fauna. No. 28. Linnean Society of LondonlEstuarine & Brackish Water Society. 307p
  49. Platt, H.M. and R.M. Warwick. 1988. Free-living Marine Nematodes. Part II. British Chromadorids. 502p
  50. Sasekumar, A 1994. Meiofauna of a mangrove shore on the west coast of peninsular Malaysia. Raffles Bull. Zool., 42, 901-915
  51. Sergio, A.N. and F. Gallucci. 2003. Meiofauna and macrofauna communities in a mangrove from the Island of Santa Catarina, South Brazil. Hydrobiologia, 505, 159-170 https://doi.org/10.1023/B:HYDR.0000007304.22992.b2
  52. Sheridan, P. 1997. Benthos of adjacent mangroves, seagrass and non-vegetated habitats in Rookery Bay, Florida, U.S.A. Estuar. coast. Shelf Sci., 44, 455-469 https://doi.org/10.1006/ecss.1996.0125
  53. Soetaert, K., M. Vincx, J. Wittoeck, M. Tulkens, and D. Van Gansbeke. 1994. Spatial patterns of Westerschelde meiobenthos. Estuar. Coast. Shelf Sci., 39, 367-388 https://doi.org/10.1006/ecss.1994.1070
  54. Somerfield, P.J., J.M. Gee, and C. Aryuthaka. 1998. Meiofaunal communities in a Malaysian mangrove forest. J. Mar. Biol. Ass., UK., 78, 717-732 https://doi.org/10.1017/S0025315400044738
  55. Sultan, A.M.A., K. Krishnamurthy, and M.J.P Jeyaseelan. 1983. Energy flows through the benthic ecosystem of the mangroves with special reference to nematodes. Mahasagar Bull. Nat. Inst. Oceanogr., 16, 317-325
  56. Tietjen, J.H. and D.M. Alongi. 1990. Population growth and effects of nematodes on nutrient regeneration and bacteria associated with mangrove detritus from northeastern Queensland (Australia). Mar. Ecol. Prog. Ser., 68,169-179 https://doi.org/10.3354/meps068169
  57. Vanhove, S., M. Vincx, D.Y. Gansbeke, W. Gijselinck, and D. Schram. 1992. The meiobenthos of five mangrove vegetation types in Gazi Bay, Kenya. Hydrobiologia, 247, 99-108 https://doi.org/10.1007/BF00008208
  58. Vanreusel, A. 1990. Ecology of free-living marine nematodes from the Voordelta (Southern Bight of the North Sea). I. Species composition and structure of the nematode communities. Cah. Biol. Mar., 31, 439-462
  59. Warwick, R.M., H.M. Platt, and P.I. Somerfield. 1988. Free living marine nematodes. Part III. Monhysterids. The Linnean Society of London and the Estuarine and Coastal Sciences Association, London. 296 p
  60. Warwick, R.M. and K.R Clarke. 2001. Practical measures of marine biodiversity based on relatedness of species. Oceanogr. Mar. BioI. Ann. Rev., 39, 207-231
  61. Warwick, R.M. and R. Price. 1979. Ecological and metabolic studies on free-living nematodes from an estuary mud-flat. Estua. Coast. Mar. Sci., 9, 257-271 https://doi.org/10.1016/0302-3524(79)90039-2
  62. Wieser, W. 1956. Free-living marine nematodes III. Axonolaimidea and Monhysteroidea. Reports of the Lund University Chile Expedition 1948-49. Acta Universitstis Lundensis (N.E2), 52, 1-115
  63. Wieser, W. 1959. Free-living nematodes and other small invertebrates of Puget Sound beaches. I. Florida. Bulletin of the Museum of Comparative Zoology, Harvard, 135, 239-344
  64. Zhou, H. 2001. Effects of leaf litter addition on meiofaunal colonization of azoic sediments in a subtropical mangrove in Hong Kong. J. Exp. Mar. Biol. Ecol., 256, 99-121 https://doi.org/10.1016/S0022-0981(00)00310-5