310
Table 9.8 (continued)
Brackish water resource
Taxonomic position Economic importance
Catenella repens
Division –
Rhodophyta
Class –
Rhodophyceae
Order – Gigartinales
Family –
Rhabdoniaceae
Genus – Catenella
Species – repens
1. Rich source of astaxanthin and therefore
used as an ingredient of fish feed
2. Used as agent of bioremediation
Saccostrea cucullata
Phylum – Mollusca
Class – Bivalvia
Order – Pterioida
Family – Ostreidae
Genus – Saccostrea
Species – cucullata
1. Edible with high demand in South Asian
countries
2. Shell is a source of lime
3. Shell dust is used in poultry feed as
source of calcium
Crassostrea gryphoides
Phylum – Mollusca
Class – Bivalvia
Order – Pterioida
Family – Ostreidae
Genus – Crassostrea
Species –
gryphoides
1. Edible with high demand in South Asian
countries
2. Shell is a source of lime
3. Shell dust is used in poultry feed as
source of calcium
Crassostrea madrasensis
Phylum – Mollusca
Class – Bivalvia
Order – Pterioida
Family – Ostreidae
Genus – Crassostrea
Species –
madrasensis
1. Edible with high demand in South Asian
countries
2. Shell is a source of lime
3. Shell dust is used in poultry feed as
source of calcium
As the name of the chapter goes, it is necessary to induce few alternative livelihoods based on cutting edge research technology in the matrix of livelihoods in Indian
Sundarbans. These include polyculture of commercially important fishes, oyster culture, seaweed culture, preparation of fish feed from mangrove associate flora, preparation of food items from coastal floral species etc. Few such ‘beyond the traditional
box’ livelihoods are discussed here separately, although they are still in embryo stage.
9 Mangroves: A Source of Existing and Alternative Livelihood