03675cas a2200397 a 450000500170000000800410001703500150005809900270007310000220010024500840012226000520020630000110025849000270026950001520029650200570044852017140050565000400221970000400225970000430229970000440234271000350238681000590242185600650248090700250254590200110257099800280258194500100260994500100261994200070262994200070263690901860264390901710282999900150300095201360301595201260315120260817163613.0110920s1988    th uu|m rtt   0|  a1eng d  a.b10071180 9aAIT Thesis no.AE-88-330 aChuanpid Thongkum13aAn assessment of mangrove crab (scylla serrata) culture in ponds in Surat Thani  aBangkok :bAsian Institute of Technology,c1988  a111 p.1 aThesis ;vno. AE-88-33  aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development  aThesis (M.Sc.) - Asian Institute of Technology, 1988  aThe rearing of ma n grove crabs ( Scyll a serrata ) in  pond s in the Kanjanadith District of Surat Thani was assessed.  Various people concerned with commercial production of mangrove  crabs farmers, fishermen, villagers and middle me n were  interviewed a nd all mangrove crab farms in the District were  o b served with respect to their rearing practice and economic  aspect s , including marketing .  Two pond experimental studies on survival and growth  of Surat Thani a nd Ranong (imported ) crabs were conducted f or  2 8 days and 15 days , respectively. During these periods, ma l e  crabs gained flesh we ight and reached the pre- multistage  females developed full y ripe (pre- spawning) ovaries. The value  o f the fattened crabs increased to a bout 2-3 times that of  post - mounting stage thin c r a bs. A low percent weight gain of  8.13% for Ranong crabs and 13.21 % f or Surat Thani crabs was  obtain e d . The extrapolated gross yields obtained from the study  we r e 6,320 kg /ha / crop a nd 1,850 kg /ha/crop for Surat Thani and  Ranong crabs respectively.  · Rearing of imported Ranong crab s in Surat Thani produced  some problems of lower survival rate ,more aggressive  behaviour, high s toc king cost and low price and small size. The  major constraints on crab culture in Surat are (a ) seed supply;  (b) price and marketing control by middlemen; (c ) high cost of  investment; (d) greater attractiveness of prawn farming. Based  on the experimental results , Surat Thani crab s can provide the  farmer with 2 a good gross income of 25 , 286 Baht/crop (profit  20 . 05 Bah t/m ) , but the equivalent income of 19,3~7 Baht/crop  from Ranong crabs would give a loss o f - 6.17 Baht/m . 0aCrab culturezThailandzSurat Thani1 aMachintosh, Donald J., eChairpeson1 aEdwards, Peter,eExamination Committee1 aWee, Kok Leong, eExamination Committee2 aJapan, eExamination Committee2 aAsian Institute of Technology.tThesis ;vno. AE-88-33  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B18934  a.b10071180bmnaitcs  a240409  b2c951012dmea  fsg3  lmnait  lmnarc  c22  c40  aBarcode : 30050120581870bCREATED : 2014-07-02cRECORD # : i12759363dLPATRON : 1025196eLCHKIN : 2014-08-08f# RENEWALS : 0g# OVERDUE : 0hIUSE3 : 0iTOT CHKOUT : 1jTOT RENEW : 0  aBarcode : 30050120364855bCREATED : 2016-05-27cRECORD # : i12997225dLPATRON : 0eLCHKIN : -f# RENEWALS : 0g# OVERDUE : 0hIUSE3 : 0iTOT CHKOUT : 0jTOT RENEW : 0  c9221d9221  00104070aMAINbMAINcmnaitd2026-08-17g50.00l0oAIT Thesis no.AE-88-33p30050120581870r2026-08-17 16:36:13t3w2026-08-17y22  00104070aMAINbMAINcmnarcd2026-08-17l0oAIT Thesis no.AE-88-33p30050120364855r2026-08-17 16:36:13w2026-08-17y40