CMarZ activities in India

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CMarZ activities in India during
2007 Vijayalakshmi R. Nair
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Digitized 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

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Biodiversity 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
• 
  

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Oceanic 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)
Wandoor
Andaman Sea
Port Blair
Diglipur
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Species diversity
20 species coming under 4 genera recorded
Oceanic 19, Coastal 13 New Species
Krohnitta balagopali, Sagitta meenakshiae
List of species Eukrohnia 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
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Chaetognath community

• 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

• 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

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Climate related alterations in zooplankton
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

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Collaborative work for DNA barcoding

• National Institute of Oceanography, Kochi
  recently developed barcoding
  facilities
• Barcoded a few chaetognath and mysid species
• Training 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

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• Upcoming 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