Community structure of macrobenthos in Ponnani estuary, South India with reference to occurrence of invasive alien species

Ranjeet Kutty, Muhsina Chakkayil, Shahul Hameed Pentam Veli Pura


Benthic organisms have been studied in past to assess the health of an aquatic ecosystem. Moreover, being sedentary forms they have been used as indicator organisms. In the present study, an attempt has been made to study the distribution and assemblage of major macrobenthic forms occurring in Ponnani estuary. A total of 23 genera of benthic invertebrate fauna belonging to 6 groups viz., Polychaetes, Bivalve, Gastropod, Amphipod, Isopod and Tanaidacian were recorded during the study. Faunistic study revealed that in high saline regions of the estuary (Veliyancode), a very good macrobenthic biodiversity was present. Bivalves were the major group enumerated from Veliyancode and Ponnani (39% and 35%, respectively), while in Biyyam predominance of gastropods (37%) were observed. Among the bivalve groups, presence of Maculista senhousia and Pholas candida, both considered as invasive species was noteworthy. Another interesting observation was the presence of Amphipod Melita zeylanica, another alien species evenly represented in all the three stations, indicating that the species had well established in Ponnani estuary. The present study is the first description of benthic organism assemblages inhabiting in the region. Results indicate that salinity is a major parameter that governs the diversity, occurrence, abundance and distribution of macrobenthos in Ponnani estuary. It also elucidates that any perturbance in the physico-chemical nature of the estuary favours the invasiveness of alien macrobenthic species in Ponnani backwaters.


Amphipod, Melita zeylanica, Benthic community, Open estuary, Climatic variability.

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Beaugrand G., Edwards M., Brander K., Luczak C., Ibanez F. (2008). Causes and prediction of abrupt climate-driven ecosystem shifts in the North Atlantic. Ecology Letters, 11: 1157-1168.

Ben Rais Lasram F., Tomasini J.A., Guilhaumon F., Romdhane M.S., Do Chi T., Mouillot D. (2008) Ecological correlates of dispersal success in Lessepsian fishes. Marine Ecology Progress Series, 363: 273-286.

Day J.W., Hall A.S., Kemp W.M., Yanez-Arancibia A. (1989). Estuarine Ecology New York: Wiley. 558 p.

Gosner K.L. (1971). Guide to identification of marine and estuarine invertebrates. Cape Hatteras to the Bay of Fundy. John Wiley and Sons, New York, NY. 235 p.

Harris L.G., Tyrell M.C. (2001). Changing community states in the Gulf of Maine: synergism between invaders, overfishing and climate change. Biological Invasions, 3: 9-21.

Herman P.M.J., Middelberg J.J., Van de Koppel J., Heip C.H.R. (1999). Ecology of estuarine macrobenthos. Advances in Ecological Research, 29: 195-240.

Herman P.M.J., Middelburg J.J., Heip C.H.R. (2001). Benthic community structure and sediment processes on an intertidal flat result from the ECOFLAT project. Continental Shelf Research, 21: 2055-2071.

Kathiresan K. (2000). A Review of studies on Pichavaram mangroves, Southeast India. Hydrobiologica, 430: 185-205.

Mainka S.A., Howard G.W. (2010). Climate change and invasive species: double jeopardy. Integrative Zoology, 5:102-111.

Mannino A., Montagna P.A. (1997). Small scale spatial variation in macrobenthic community structure. Estuaries, 20:159-173.

Masters G., Norgrove L. (2010). Climate change and invasive alien species. CABI Working Paper 1, 30 p.

Occhipinti-Ambrogi A. (2007). Global change and marine communities: Alien species and climate change. Marine Pollution Bulletin, 55: 342-352.

Racchor E. (1990). Changes in sublittoral zoobenthos in the German Bight with regard to eutrophication, Netherlands Journal of Sea Research, 25: 209-214.

Saravanakumar A., Sesh Serebian J., Thivakaran G.A., Rajkumar M. (2007). Benthic macrofaunal assemblage in the arid zone mangroves of Gulf of Kachchh, Gujarat. Journal of Oceanic University of China, 6: 303-309.

Silva G., Costa J., de Almeida T., Costa M. (2006). Structure and dynamics of a benthic invertebrate community in an intertidal area of the Tagus estuary Western Portugal: A six year data series. Hydrobiologica, 555(1): 115-128.

Strickland J.D.H., Parsons T.R. (1972). A practical handbook of seawater analysis. Fisheries Research Board of Canada. Department of Fisheries and Oceans, Pubication. 2nd Ed., Ottawa, Canada, 310 p.

Ysebaert T., Herman P.M.J., Meire P., Craeymeersch J., Verbeek H., Heip C.H.R. (2003). Large scale spatial patterns in estuaries: estuarine macrobenthic communities in the Schelde estuary, NW Europe, Estuarine, Coastal and Shelf Science, 57: 335-55.

Ysebaert T., Meire P., Coosen J., Essink K. (1998). Zonation of intertidal macrobenthos in the estuaries of Schelde and EMS. Aquatic Ecology, 32(1): 53-71.

Ysebaert T., Meire P., Maes D., Buijs J. (1993). The benthic macro fauna along the estuarine gradient of the Schelde estuary. Netherlands Journal of Aquatic Ecology, 27: 327-341.

Zajac R.N., Whittach R.B. (1982). Responses of estuarine infauna to disturbance. I. Spatial and temporal variation of initial recolonization. Marine Ecology Progress Series, 10: 1-14.


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