Evolution of Larval Developmental Patterns and the Process of Freshwaterization in the Prawn Genus Macrobrachium Bate, 1868 (Decapoda, Palaemonidae)

摘要: The inland prawn genus Macrobrachium Bate, 1868, is supposed to have originated from marine ancestors sometime in the beginning of Pleistocene and since then its members invaded freshwaters different degrees. As such, these prawns are found occupy almost all types aquatic bodies right purely through estuarine, riverine impounded waters. Consequently, they evolved various developmental patterns. Based on information available more than 40 species, three basic larval patterns can abe recognized this viz., Prolonged or Normal Type (with 8 20 stages), Partially Abbreviated 2 3 stages) Completely only 1 stage). However, there several species showing transitional Thus, process freshwaterization seems be still continuing genus. Incidentally, above knowledge applied culture as a basis for selection suitable candidate forage species.