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CMarZ activities in India during 2007 Vijayalakshmi R. Nair. Digitized inventory for Indian Ocean Zooplankton. Prepared inventories for 250 species of zooplankton from Indian Ocean - PowerPoint PPT Presentation
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CMarZ activities in India
during 2007
Vijayalakshmi R. Nair
Digitized inventory for Indian Ocean ZooplanktonDigitized inventory for Indian Ocean Zooplankton
• Prepared inventories for 250 species of zooplankton from Indian Ocean
• Each inventory covered morphological description, biogeography and ecology of species
• Can be incorporated into species page
• Out put
Calanoid copepods - 60 species
Chaetognaths - 31 species
Ostracods - 32 species
Mysids - 101 species
Pleuronectiformes - 26 species
Biodiversity of zooplankton from Andaman SeaBiodiversity of zooplankton from Andaman Sea
• Study on biodiversity of chaetognaths of the Andaman Sea completed
• Andaman Sea is one of the prominent biodiversity hotspots in Indian Ocean
• Andaman Sea has special physical features like cyclonic circulation, tropical cyclones, reduction in temperature from 50 m onwards, low salinity upto 50 m, OMZ below 100m
Oceanic and coastal locationsOceanic and coastal locations
16 stations from oceanic sector and 17 stations from coastal waters
Collections from 2003 to 2006
Oceanic : MPN (0-TT, TT-BT, BT-300 & 300-500 m)
Coastal : Bongo net (surface)
Andaman Sea Port Blair Wandoor Diglipur
Species diversitySpecies diversity
List of speciesEukrohnia fowleri Ritter-Zahony, 1909
*Krohnitta balagopali sp. nov.
Krohnitta pacifica (Aida), 1897
Krohnitta subtilis (Grassi), 1881
Pterosagitta draco (Krohn) 1853
Sagitta bedoti Beraneck, 1895
Sagitta bipunctata Quoy and Gaimond, 1827
Sagitta decipiens Fowler, 1905
Sagitta enflata Grassi, 1881
Sagitta ferox Doncaster, 1903
Sagitta hexaptera d’ Orbigny, 1843
Sagitta lyra Krohn , 1853
Sagitta maxima (Conant) 1896
Sagitta minima Grassi, 1881
*Sagitta meenakshiae sp. nov.
Sagitta neglecta Aida, 1897
Sagitta pacifica Tokioka, 1940
Sagitta pulchra Doncaster, 1903
Sagitta regularis Aida, 1897
Sagitta robusta Doncaster, 1903
20 species coming under 4 genera recorded : Oceanic – 19, Coastal – 13New Species : Krohnitta balagopali, Sagitta meenakshiae
• Phenomenal changes in chaetognath community in the Andaman Sea
• Population density reduced from 20/m3 to 9/m3 in 4 decades
• Species diversity increased from 10 to 20
• Subtle changes in community structure
• Maximum diversity at Thermocline
• Upto BT - S. enflata dominated, Below BT – S. decipiens dominated
• Surfacing of meso and bathypelagic species (S. decipiens, E. fowleri)
• Grouping of species showed 2 clusters at each stratum
Chaetognath communityChaetognath community
• Declining trend in a dominant calanoid copepod in coastal waters
• Earlier proliferated following diatom blooms and is an indicator of upwelled waters
• The species dominated in the entire shelf from 1970 to 1980 (100/m3) & reduced to 16/m3 (1998 to 2005)
• Attributed to climate change
• SST increase from the area is evident
Climate related alterations in zooplankton communityClimate related alterations in zooplankton community
• National Institute of Oceanography, Kochi recently developed barcoding facilities
• Barcoded a few chaetognath and mysid species
Training on DNA MarkerTraining on DNA Marker
• Training programme on “DNA Marker Technologies : Principles and Applications” held at NBFGR, CMFRI Campus, Kochi, 21 February 03, March 2007
• Theoretical and practical knowledge on DNA based markers including recent developments
Collaborative work for DNA barcodingCollaborative work for DNA barcoding
Upcoming eventsUpcoming events
• Comparative study on biodiversity of chaetognaths from Arabian Sea and Bay of Bengal (2003-2006)
• Biodiversity of zooplankton off Alang, Gujarat, west coast of India (2008-2009)
• Barcoding of zooplankton species
• Data recovery from IIOE collections to produce further information
• Popular articles on CMarZ
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