An account on the assemblage of fish larvae in Ponnani estuary, South India
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Estuarine environments are one of the most dynamic aquatic ecosystems and serve many important functions in coastal waters. Larval fish dynamics contribute significantly to understanding the ecology of fish populations as they can indicate the spawning-stock biomass and recruitment in adult fish stocks. Initial development stages of fishes are particularly vulnerable and are influenced by physical and biological processes. Hence the present study was aimed to characterize ichthyoplankton assemblages, to evaluate environmental influence in its structure. Ponnani backwater fish larvae assemblages displayed a clear seasonal pattern presenting higher abundances and diversities during warmer months. Throughout the year there is a wide fluctuation in salinity, temperature and primary productivity in these backwaters enabling it to be classified under stressful environment for larval forms of certain economically important marine fishes. A detailed analysis made to study the interaction of selected environmental parameters with ichthyofaunal diversity in Ponnani backwater provided a clear understanding on the influence of these variables on the distribution of marine fish larvae in the region. The results of the present analysis provided a model for the prediction of larval diversity from the prevailing environmental parameters.
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Able K.W. (2005). A re-examination of fish estuarine dependence: evidence for connectivity between estuarine and ocean habitats. Estuarine, Coastal and Shelf Science, 64: 5-17.
Akin S., Buhan E., Winemiller K.O., Yilmaz H. (2005). Fish assemblage structure of Koycegiz lagoon-estuary, Turkey: Spatial and temporal distribution patterns in relation to environmental variation. Estuarine and Coastal Shelf Science, 64: 671-684.
APHA. (2005). Standard methods for the examination of water and waste water. 21st ed. American Public Health Association, Washington DC. 1250 p.
Beck M.W., Heck K.L., Able K.W., Childers D.L., Eggleston D.B., Gillanders B.M., Halpern B., Hays C.G., Hoshino K., Minello T.J., Orth R.J., Sheridan P.F., Weinstein M.P. (2001). A better understanding of the habitats that serve as nurseries for marine species and the factors that create site-specific variability in nursery quality will improve conservation and management of these areas. BioScience, 51: 633-641.
Blaber S.J.M. (2000). Tropical estuarine fishes: ecology, exploitation and conservation. Blackwell Science, Oxford. 372 p.
Bruno D.O., Barbini S.A., Astarloa J.M.D., Martos P. (2013). Fish abundance and distribution patterns related to environmental factors in a choked temperate coastal lagoon (Argentina). Brazilian Journal of Oceanography, 61(1): 43-53.
Cabral H.N., Costa M.J., Salgado P. (2001). Does the Tagus estuary fish community reflect environmental changes? Climate Research, 18: 119-126.
Castro G.M., Díaz de Astarloa J.M., Cousseau M.B., Figueroa D.E., Delpiani S.M., Bruno D.O., Guzonni J.M., Blasina G.E., Deli Antoni M.Y. (2009). Fish composition in a southwestern Atlantic temperate coastal lagoon: Spatial-temporal variation and relationships with environmental variables. Journal of Marine Biological Association, UK., 89(3): 593-604.
Day Jr., J.W., Hall C.A.S., Kemp M.W., Yanez-Arancibia A. (1989). Estuarine Ecology. John Wiley and Sons, New York. 576 p.
Elliott M., Whitfield A.K., Potter I.C., Blaber S.J.M., Cyrus D.P., Nordlie F.G., Harrison T.D. (2007). The guild approach to categorizing estuarine fish assemblages: a global review. Fish and Fisheries, 8: 241-268.
Intergovernmental Panel on Climate Change (IPCC) (2001). Third assessment report of the working group I. In: J.T. Houghton, Y. Ding, D.J. Griggs, M. Nouger, P.J. van der Linden, X. Dai, K. Maskell, C.A. Johnson (Eds.). The Science of Climate Change. Cambridge University Press, Cambridge. 578 p.
Kimura S., Kato Y., Kitagawa T., Yamaoka N. (2010). Impacts of environmental variability and global warming scenario on Pacific bluefin tuna (Thunnusorientalis) spawning grounds and recruitment habitat. Progress in Oceanography, 85(1-2): 5-32.
Leis J.M., Carson-Ewart B.M. (2000). The larvae of Indo-Pacific Coastal fishes. an identification guide to marine fish larvae, Brill, Boston. 850 p.
Martinho F., Leití£o R., Neto J.M., Cabral H., Marques J.C., Pardal M.A. (2007). The use of nursery areas by juvenile fish in a temperate estuary, Portugal. Hydrobiologia, 587: 281-290.
Martino E.J., Able K.W. (2003). Fish assemblages across the marine to low salinity transition zone of a temperate estuary. Estuarine and Coastal Shelf Science, 56: 969-987.
Ramya K. (2010). Fish occurrence and biodiversity in Beeyam Kayal. MSc Thesis, Department of Aquaculture and Fishery Microbiology, MES Ponnani College. 35 p.
Trevor D.H., Whitfield A.K. (2006). Estuarine typology and the structuring of fish communities in South Africa. Environmental Biology and Fisheries, 75: 269-293.
Selleslagh J., Amara R. (2008). Environmental factors structuring fish composition and assemblages in a small macrotidal estuary (eastern English Channel). Estuarine and Coastal Shelf Science, 79(3): 507-517.
Strickland J.D.H., Parsons T.R. (1972). A practical handbook of sea water analysis, 2nd ed. Fisheries Research Board Canada Bulletin, 167: 310 p.
Whitfield A.K. (1999). Ichthyofaunal assemblages in estuaries: a South African case study. Reviews in Fish Biology and Fisheries, 9: 151-186.
Whitfield A.K., Paterson A.W., Bok A.H., Kok H.M. (1994). A comparison of the ichthyofaunas in two permanently open Eastern Cape estuaries. South African Journal of Zoology, 29: 175-185.
