Comparative haemagglutinic activity in the species of Caulerpa and Ulva (Chlorophyta) of Karachi coast

Amjad, M.T.; Shameel, M.

Comparative haemagglutinic activity in the species of Caulerpa and Ulva (Chlorophyta) of Karachi coast

1993

Amjad, M.T. | Shameel, M.

Aquous extracts of 24 species of green seaweeds, 13 of Caulerpa Lamour and 11 of Ulva Linn, were collected from the coastal areas near Karachi, Pakistan and tested for haemagglutination against human erythrocytes of blood groups A,B,AB and O and compared. All the species of Caulerpa and seven of Ulva exhibited a positive activity, the former genus (a member of Bryopsidophyceae) appeared to possess more phycohaemagglutinins than the latter (a member of Ulvophyceae). The haemagglutinic activity proved to be quite helpful in the distinction of various species of both the genera.

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