Journal of Coastal Zone Management

Sudhakar S

Publications

• Research Article
  Embryonic Development of Macrobrachium idae (Heller, 1862)
  Author(s): Sudhakar S, Soundarapandian P, Varadharajan D and Dinakaran GKSudhakar S, Soundarapandian P, Varadharajan D and Dinakaran GK
  
  The egg laying usually takes place between 6 and 20 hrs after mating. The laying of one whole batch of eggs is usually completed within 20 mins. The eggs are extruded through the female genital pores into the brood chamber, first on one side then the other. The chamber between the 4th pair of pleopods is filled first, then those between the 3rd, 2nd and 1st pairs, successively. The eggs are held in bundles like grapes by an extremely thin elastic membrane which is believed to be secreted by the ovigerous setae. During the development in prawns the colour of the eggs changed through greenish opaque, light green, brownish-yellow and dull whitish in colour. The embryonic stages are very much useful in recognizing the stages of development of the species. The process of embryonic development includes nuclear division, cleavage (blastomeres), segmentation, formation of optic vesicle, eye p.. View More»
  

  Abstract PDF