LỜI CẢM ƠN Để hoàn thành luận văn này, tôi xin bày tỏ lòng biết ơn sâu sắc đến PGS.TS. NGƯT Nguyễn Ngọc Hợi, người đã hướng dẫn tận tình và tạo mọi điều kiện thuận lợi cho việc nghiên cứu của tôi. Tôi xin chân thành cảm ơn sự giúp đỡ nhiệt tình của các hộ nuôi tôm ở Xí nghiệp Thanh niên Cửa hội- Cửa lò. Qua đây, tôi xin chân thành cảm ơn Khoa sau đại học, các thầy cô giáo chuyên ngành Sinh học thực nghiệm, Khoa Sinh học, Trường Đại học Vinh, Phòng kinh tế Thị xã Cửa lò cùng gia đình và bạn bè đã giúp đỡ tôi trong quá trình thực hiện đề tài này. Tôi xin trân trọng cảm ơn! Vinh, tháng 12 năm 2011 Tác giả Lê Thị Thu  MỤC LỤC Trang   ! "#$%&'()**+,$-./ #'0$1$2#3+45#-56&7%8 99:;''.0.!,<<4.<=>?8@ A'/#$1 5)B/:7%8/CD%E65 0F=>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>G 90 *%>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>H I>J>K+,; L ;MN>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>JO I>J>>K+,; L ;- P ;Q L /M P ,- L ;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>JO I>J>I>K+,; L ;- P ;Q L /M P + L - L ;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>JO I>J>J>K+,; L ;*$1 L .M L Q L #Q'+, R >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>JS I>G>BM T #'Q L $Q P U'+, T  R . T /M P Q L  T Q#>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>G I>G>>BM T #'Q L $Q P U'+, T >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>G I>G>I>BM T #'. T /M P Q L #A$>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>GI I>G>J>K+,;;*$1;V#/+W*4 ;'X1Q#>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>GJ I>G>G>K+,; L ;*+ T /. L Q L /M P >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>GJ ?QNY'/AUC>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>GJ I DANH MỤC BẢNG   ! "#$%&'()**+,$-./ #'0$1$2#3+45#-56&7%8 99:;''.0.!,<<4.<=>?8@ A'/#$1 5)B/:7%8/CD%E65 0F=>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>G 90 *%>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>H I>J>K+,; L ;MN>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>JO I>J>>K+,; L ;- P ;Q L /M P ,- L ;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>JO I>J>I>K+,; L ;- P ;Q L /M P + L - L ;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>JO I>J>J>K+,; L ;*$1 L .M L Q L #Q'+, R >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>JS I>G>BM T #'Q L $Q P U'+, T  R . T /M P Q L  T Q#>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>G I>G>>BM T #'Q L $Q P U'+, T >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>G I>G>I>BM T #'. T /M P Q L #A$>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>GI I>G>J>K+,;;*$1;V#/+W*4 ;'X1Q#>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>GJ I>G>G>K+,; L ;*+ T /. 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Thống kê diện tích, năng suất và xuất khẩu tôm ở Việt Nam Năm Diện tích nuôi (nghìn ha) Sản lượng (nghìn tấn) Năng suất (tấn/ha) Chỉ tiêu (năm trước =100)-% t'1 * _:c d!= Tôm nước lợ Tôm nước ngọt Tổng SSa SJH JIb aJaa Ib SSH IkS HHJ aJaJ IJb Iaaa JIG kG JGaH SJH aJGG kIk akk Iaa GHGS IO Gbkb HGS aJGS kHb abO IaaI HaSk kk HkI OkI aJOb IaI aSG IaaJ HbGS HH HOaG IJbS aGII IbO ak IaaG HSOa kG kaGG IOO aGS OH Ib IaaH HIOJ GS HJJI JIbI aHJb k Jb Iaak kI Gk kkb JHGH aOJ Gk Iaab kJJG HG kJOO JOGH aOH H IaaO kISI kS kJk JOOG aa IaaS kIJJ kk kISS GSG aOa kO Iaa kGHa ba kHIa GHaJ aHJO abG IaO Ia kGa (Nguồn: Tổng cục thống kê : Báo cáo về nông lâm nghiệp thủy sản năm 2010) ?&/ 'E>.0QQ#'\ $%$[$2>"U#SSa^ `SJHm $. `QQ#+^/W$%$[kHIaaa m # Se `Q'64.>?Y^ #Z'0 ` /+WQ#Q{U/M'‘' >"U#SSa/+WQ# S +^/W#^/JIb$U#Iaa/+WQ#$%$[GHaJaa :U;Gak/V='U#Ian;3U>  "#$%'Z#'J+^5/+WQQ# ^:<'h&i9=> DM[U0 `/+WUQQ# .$+W ><.MX$4€x’:IaaJ=U QQ#4 "#;,^+^'?-‹> <'UQQ#Z<'h&/Gkj#E]E2<8 GJIj#E]E2U4 "#$[bJj#E]E2vGw> B5$+,#[4.'+^;5$*A; _Q#>"U#Iaa/V$VM*_Q# "#$[&c/3 IGa>aaa^'1IaOcd!+W*MGcd!$0'> <X &MV$-.4€x’:Iaak=#qY0/+W*_Q#  "#$N <8i9gX+'GU#/0 "# /+^$N$V0'1*_Q#oSHJd!j>!Zzo5 $+W\$5/]$\.00*_Q#o}/^vGw> 8Q#$+W/Q4.Z "#/Q#o:Penaeus monodon= #OaSae>"'@5/Q#+CQ#E[ :P. merguiensis=Q#p"AD:P. japonicus=Q#Y#:Pannulirus=‰ <)U#Iaaa<Q#p-'„:Penaeus vannamei=56&)"# 7‡$%$+WA; "#>B2)$5 QQ#p-'„$% $;'2vaw> B\MN'[$0/M\$QQ#Z  "#.Q# .$%5E+^;'25> <.M.+A+,*N^0# U/W0;'24.4$+^>7'.M -n$m'[./ QQ#$#`;+5 #20$q$2#/s &#|1A;` 4/Q#+2#qr/+WQ#&+*-. #QmQQ#‰m1E $%|''/>9 a . /s54Q#><'+^'[$5oQ$0C Ảnh hưởng của yếu tố môi trường lên sự phát triển một số chỉ tiêu sinh lý, sinh hóa của Tôm thẻ chân trắng :Penaeus vannameiDXSJ= tại các đầm nuôi. nghiên cứu của tôi. Tôi xin chân thành cảm ơn sự giúp đỡ nhiệt tình của các hộ nuôi tôm ở Xí nghiệp Thanh niên Cửa hội- Cửa lò. Qua đây, tôi xin chân thành