THAIVH PHAIVI LOAI BO RIJA (COCCIIVELLIDAE), THIJC AIM V A Dl£l\l BIEIXI SO LUOIXIG MOT SO LOAI TREIV C A Y AIXI QLIA CO MIJI TAI X A THAIXIH LAP, LUOIXIG SOiXI,
HOA BilXIH V A IHilXIH KHAI, B A C TU LIEM, H A IXIOI
Pham Qufnh Mai\ Nguyin Tlii Hda^
TOMTAT
Bai bao trinh bay nhung ket qua nghien ciru birdc ddu vi thanb phan loai bo riia Coccinellidae, pho thirc an va su bien dong sd luong theo thoi gian cua chung trong cac vudn cay an qua cd mui tai 2 xa Minh Khai (Bac Tir Liem, Ha Npi) va xa Thanh Lap (Luong Son, Hoa Binh). Tai xa Minh Khai da xac dinh dirge sir co mat cita 9 loai bo riia Coccinellidae, d xa Thanh Lap sd lugng nay la 13 loai. Trong cac loai bo riia thu dugc, CO 9 loai thuoc nhom bdt moi an thjt, 2 loai thuoc nhom an nam. 2 loai thuoc nhom an la. Bp nia Nhat Ban Propylea Japonica (Thunberg) la loai chiem uu the tai khu vuc ngbien ciiu d xa Minh Kbai, chiing xuat bien lien tuc trong sudt 14 thang dieu tra, tir thang 4/2018 den thang 5/2019, voi 69 ca the chidm 56.5% long sd cac ca the bp riia thu dirge Loai bo riia 6 vdn Menochilus sexmaculatus (Fabncius) xudt bien 10 thang, tir thang 6 den thang 1/2019, sau do diang 2 va 3 khong thu dirge mau nao cua loiti nay, den thang 4 va 5 nam 2019 thi loai nay lai xuat bien va cbi thu duoc 1 ca th^ trong m6i thang do. Ba loai cdn lai gom: Loai bo rtia hai mang do Lemnia biplagiata (Swartz), loai bp riia mudi cham Harmonia octomaculata (Fabncius) va loai bo nia do Micraspis discolor (Fabncius) cbi xuat hien 5-6 lan trong sudt thai gian (14 thang) dieu tra. Bai bao cung de cap den mot sd bien phap nham tang cirong tinh da dang ve thanh phan loai va sd luong ca the cua cac loai bo riia co ich tai khu virc nghi6n cuu.
Tit khda: Thanh phan loai bo riia, so luang ca the, bien dong, pho bien thiic an.
1 . BAT VAN OE
Cac loai bo riia tiiudc hg Coccinelhdae la nhdm cdn triing cd ich quan trong tren he thdng cay trdng ndi chung va tren cac loai cay cd mui ndi rieng [3,11, 12). Tuy mdt sd loai bp riia cd thuc an la la cay nhung nhieu loai bp rua la thien dich quan ti-png cita cae loai sau hai ehu yen tren cay cd mui nhu rep sap Coccidae va rep mudi Aphididae; mdt sd loai bp riia lai cd thicc an la nhung loai vi nam hai cay trong. De cd CO sd khoa hpc va thuc tidn chac chan ti-ong viec loi dung cac loai bg riia trong phdng tiir tdng hop sau hai tren tap doan cay cd mui can cd nhimg hieu bidt diy du vd nhdm cdn txixng thien dich nay trong he sinh thai cay ti-dng cu tiie [1, 2, 5, 6, 7]. Muc dich cua nghien cihi nham eung cap nhung ket qua ve thanh phan Ioai, phd thuc an va didn bien sd lugng cua nhdm bo riia thudc ho Coccmelidae ti-dn tap doan cay cd rniii thudc xa Mmh Khai (Bac Tir Liem, Ha Ndi) va xa Thanh Lap (Luong Son, Hoa Bmh).
' Vien Sinh thai va Tai nguyen sinh vat ' Trudng Trung hoc phd thong Nam Luong Son
2 . NO! DUNG VA PHUONG PHAP NGHIEN CUU 2.1. Ndi dung nghidn cuu
+ Xac dinh thanh phin loai bp riia CoeeinelUdae tai khu vuc nghien cuu;
+ Xac dinh thanh phan thirc an cua cac loai bp riia Coccmelhdae dkhu vuc nghien cuu;
+ Buoc dau theo doi didn bien sd lugng cita mdt sd loai bp nia Coccinellidae theo thang trong nam tai khu vuc nghien cim;
+ Dd xuat mot sd bien phap nham tang eudng tinh da dang va hao vd quin thd bo riia cd ich lam eg so- de lgi dung chung trong phdng ti-ir tong hop sau benh hai tren eay an qua cd miii tai khu vuc nghien cuu.
2.2. Thdi gian v^ dia di^m nghidn ciiu Nghien cuu duoc thuc hien tir thang 4 nam 2018 ddn thang 5 nam 2019 tai viing chuydn canh budi Didn d xa Minh Khai, Bac Tir Liem, Ha Ngi va vudn Budi CO trdng xen mdt sd loai cay an qua khac (nhu nhan, tao, di) dxa Thanh Lap, Luong Son, Hoa Binh.
NONG NGHIEP VA PHAT TRIEN NONG THON - KY 2 - THANG 6/2019
KHOA HOC C O N G NGHE
2.3. Phirong phdp nghifen cuu
2.3.1. Phuongphap thu miu ngoai thuc dia Khao sat, didu tra dupe thuc hien trong toan bd khu vudn trdng budi d 2 dia diem nghidn cim d- xa Thanh Lap (Luong Son, Hoa Binh) va Minh Khai (Bac Tir Lidm, Ha Ndi). Thu mlu bg riia bang phuong phap thu miu cdn triing thdng thudng. Vat dung diing de thu miu gdm cd vot cdn trimg va hiy man treo - Malaise trap dugc treo d noi dd quan sat, dugc bao ve va thu mau 10 ngay/Iin [4,10].
Su xuat hien va phan bo sd lugng ca the cua cac loai bo riia duoc xae dinh bing phuong phap quan sat true tiep va dem so lugng. Su thay doi sd luong ca the bp riia dugc xac dinh theo dinh ky ciia cac dot difeu tra theo mdt phuong phap ddng nhat. Miu bp riia thu theo dinh ky 2 tuan/lan; vide thu mau duoc thuc hien bdi 1 ngudi; dieu tra lien tuc trong 2 gid vao buoi sang (trong trudng hgp den ngay didu tra ma thdd tiet bat thudng nhu mua, bao, viec dieu tra thu miu se duoc chuydn sang buoi chieu cimg ngay hoac ngay hdm sau). Chgn 50 cay an qua trong mdi vudn de dieu tra thu miu, theo phuong phap dudng cheo gdc.
XacdinhdpuutheD(%) D-(nyNa)xl00%
Trong dd: n^: Sd lugng ca the cua loai a; N : Tdng sd ca the (tdng sd miu) cua tat ca cac loai bg riia thu dugc.
Khi D dimg de xac dmh dp uu the cita loai "a" so vdi tat ca quan the bo nia tai didm nghien cuu; khi do N se la tdng sd miu cita tat ca cac loai bg riia thu dugc tai diem nghidn ciru.
Khi D dimg de xac dinh uu the vd sd luong ca the cua loai "a" tai diem nghien cuu; khi dd N se la tdng sd ca the cua loai "a" thu dugc tai diem nghien cuu
Ket qua khi D=15%: gap rat it (gap ngiu nhien);
tir 16-50%: gap it (khdng thudng xuyen); > 50%: gap nhidu (tiiudng xuyen).
Ddng thdi vdi viec dieu tra xac dinh su bien ddng sd luong ca thd cua cac loai bg riia tai 2 khu vuc nghien cuu, nhdm nghien cuu cung tien hanh tiieo doi su bien ddng cua ngudn thiic an nhim gdp phin lam ro nguyen nhan cua su bien ddng dd.
Mau bg riia thu dupe ngoai thuc dia duoc xii ly, luu giu tam thdi bing 2 hinh thiie: eac miu cua hiy
man treo la man da dugc ngam trong cdn tuyet ddi (96%); man thu bing vpt va miu bat bing tay luu giii trong lg ddc (chira dung dich Ethyl acetate- CH3COOC.H5).
2.3.2. Phan tich miu tiong phdng thi nghiem Sd Ueu ghi chep va cac hinh anh ghi nhan dugc ngoai thuc dia se dugc xir ly trong phdng thi nghiem.
Tdng hgp, phan tich sd Ueu theo phuong phap thdng ke sinh hgc thdng thudng va hing phan mem Excel trong Wmdows 8.
Tach, nhat miu bang mit thudng va kinh liip;
phan tich, dinh loai miu de xae dinh thanh phan loai bo riia tai khu vuc nghien ciiu. Miu vat duoc xu ly, phan tich va hao quan theo phuong phap thudng quy tai phdng sinh thai cdn triing, Vien Sinh thai va Til nguyen sinh vat. Miu vat dugc luu giir, bao quan dudi hai hmh thiic: (1) miu khd, dugc say khd giir trong ddm bdng hoac cim ghim va Itm giu trong hop go; (2) mau udt, ngam trong dung dich cdn 70%, giir trong cac lo thuy tmh hoac lg nhua cd nut day kin.
Man vat bg nia thu dugc tir khu vuc nghien ciiu dugc phan tich, dinh loai bdi cac chuyen gia cdn trimg cua Vien Sinh thai va Tai nguyen suih vat theo cac tai hdu phan loai chuyen nganh dugc su dung rong rai d Viet Nam: Bo nia d Viet Nam, Hoang Dire Nhuan, 1982,1983 [8, 9] va ti'en tiie gidi.
3. KEF QUA NGHBV CUU VA THAO LUAN
3.1. Tiianh phin loii Bg rua t ^ khu vuc nghidn ciiu
Vdi sd luong miu thu duoc trong eac dot thuc dia va miu thu dinh ky tit biy man treo (Malaise) tai 2 diem nghien ciiu (Luong Son, Hda Binh va Minh Khai, Ha Noi), thu dugc tong sd 215 miu cac loai bg riia. Tir dd phan tich va xac dinh thinh phin loai bg riia Coccinellidae tai 2 dia diem nghien ciiu. Ket qua phan tich dugc trinh biy trong bang 1.
Tdng sd loai bg rua Coccmellidae thu duoc d ca hai dia diem thudc xa Mmh Khai va Thanh Lap la 13 loai trong 5 phan hg la Chilocorinae (cd 1 loai), CocciduUnae (cd 1 loai), Coccinellinae (cd 7 loai), Epilachnmae (cd 2 loai) va Scymninae (cd 2 loai). Tai ca 2 dia diem nghien cuu deu bit gap ca 4 phan hp, tuy nhidn trong khi d xa Thanh Lap xuat hien ca 13 loai thi 0 diem nghien ciiu 0 xa Minh Khai chi thu dupe cac ca the cua 9 loai. Bdn loai khdng bit gap tai xa Mmh Khai la / conAisa vk I mdica thudc phan ho Coccinelhnae, H. kaszabithuoc phan hp Epilachninae, 141
S. ho&nani thuoc phan hg Scymnmae (Bang 1). Mdt trong nhung nguyen nhan ciia hien tugng nay cd the la do su khac nhau cua sinh canh d 2 dia didm nghien ciru. Tai xa Minh Khai sinh canh cua quan xa con trimg ndi chung va quan the bg riia ndi neng la quin tiid cay budi Didn ti-dng don loai va viing Win ke cua vudn budi nay la khu dan cu dd thi ddng diic.
Trong khi do, tai xa Thanh Lap, sinh canh cita cac loai cdn ti-ung la vudn cay an qua da loai, gdm budi Oa cay trdng chit dao) va mot sd cay an qua khac nhu
nhan, di, tao. Ngoai ra, vimg giap ranh vdi vudn cay an qua nay la cac he smh thai cay trdng ndng nghiep (Ilia, ngd, cay rau man), rimg ti-dng (Bach dan, Keo) va cac he sinh thai tham thuc vat tu nhien khac (trang cd, ti-ang cay bui, rimg thir sinh). Chinh su da dang va phong phu cila sinh canh d' xa Thanh Lap la mdt trong nhimg nguyen nhan tao nen su da dang va phong phu cita quan he bp riia Coccmellidae so vdi quin the bp riia Coccmelhdae d xa Mmh Khai.
Bang 1. Tiianh phin Ioai bg riia Coccinellidae tai xa Minh Khai v i xa Thanh Lap
STF 1 Ten loai Xa Minh Khai Xa Thanh Lap
Phan hg Chilocorinae
1 1 Chilocorus chinensis Miyatake X 1 X
Phan hp Cocciduhnae
2 1 Rodolia rufopilosa Muhant X X
Phan ho Coccinellinae 3
4 5 6 7 8 9
Harmonia octomaculata (Fabricius) llleis coflTusa Timberlake Illeis /flc'/caTimberlake Lemnia biplagiata (Swartz) Menochilus sexmaculatus (Fabricius) Micraspis discolor (Fabricius) Propylea japonica (Thunberg)
X
X X X X
X X X X X X X
Phan ho Epilachninae 10
11
Henosepilaehna kaszabi
Henosepilachna vigintioetopunctata X
X X
Phan ho Scymninae 12
13
Cryptogonus orbiculus (Gyllenhal) Scymnus hoMnaniWeise
X X
X
3.2. Phd thiic an cua c i c Ioai bg rua Coccmellidae tai khu vuc nghidn ciiu
Phan nhdm cac loai bg nia Coccmelhdae tai hai khu vuc nghien ciiu theo phd thiic an dugc trinh bay trong bang 2.
Bang 2. Phan nhdm cic Ioai bp rua Coccinelhdae theo thuc an
STT 1 Ten loai Bit mdi an thit | An la cay | An nim
Phan ho Chilocorinae
1 1 Chilocorus ehmensisMiyatake
1 1
Phan ho Cocciduhnae
2 1 Rodolia ivfopilosaMuhant
1 1
Phan ho Coeeinellmae 3
4 5 6 7 8 9
Harmonia octomaculata (Fabricius) Illeis conhisaTrmheriake Illeis mdica Timberlake Lemnia biplagiata (Swartz) Menochilus sexmaculatus (Fabricius) Micraspis discolor (Fabricius) Propylea japonica (Thunberg)
X X X X X X X
NONG NGHIEP VA PHAT TRIEN NONG THON - KY 2 - THANG 6/2019
KHOA HOC CONG NGHE Phan hg Epilachnmae
10 11
Henosepilachna kaszabi Henosepilaehna vigintioetopunctata
X X
Phan hg Scymninae 12
13
Cryptogonus orbiculus (Gyllenhal) Scymnus ho^naniWeise
X X
Trong tong sd 13 loai bg riia Coccinelhdae thu duoc d ca 2 dia diem nghien ciru nhdm bg riia an la thudc phan hg Epilachnmae cd ty trong thap nhit, gom 2 loai, chidm 15% tong sd loai bat gap; nhdm bg nia bit mdi an thit cd sd lugng ldn nhat, gdm 9 loai, thudc 3 phan hg Chilocorinae, CocciduUnae va Cpccmellmae, chidm tren 69% tdng sd loai bit gap;
hai loai C. orbiculus vk S. ho&nanh thudc phan ho Scymninae cd thiic an chii yeu la cac vi nim. Nhdm bp riia bit moi an thit va an nam chiem tdi 85% tdng sd loai bit gap. Day la nhiing loai cdn triing cd ich vi chiing la thien dich cua nhidu loai sau hai va nim gay
niia gdp phan khing dinh khu he bp riia Coccinellidae tai 2 dia diem nghien ciru chii yeu la cac loai cdn triing cd ich va cd kha nang lgi dung dugc trong phdng trir tong hpp sau benh hai cay an qua tai cac khu vuc nghien ciiu
3.3. Didn bi^n s6 lugng ca th^ ciia mdt sd Ioai bg riia Coccinelhdae a khu vuc nghifin cthi theo thdi gian di^u tra
Nhung sd heu hudc diu ve dien bidn sd lugng ca the ciia 5 loai bo riia Coccmellidae thude nhdm bit mdi an thit tai khu vuc xa Minh Khai theo thdi gian dieu tra duoc trinh hay trong bang 3.
benh cho nhieu loii cay an qua. Dieu nay mot lin
Bang 3. Difin bi6i sd lugng ca th^ cua 5 loii bg rvia tai xa Minh Khai, H i Ngi (to thing 4/2018 d^n thing 5/2019)
Thoi gian 4/2018
5 6 7 8 9 10 11 12 1/2019
2 3 4 5 Tong so
Menochilus sexmaculatus
0 0 4 1 1 1 3 2 1 1 0 0 1 1 16 (13,1%)
Propylea japonica
3 4 11 4 3 16 9 3 1 1 1 5 3 5 69 (56,5%)
Lemnia biplagiata
1 0 0 0 1 0 0 0 0 0 1 1 1 0 5 (4,1%)
Harmonia octomaculata
0 0 1 0 7 0 3 2 1 0 0 0 0 1 15 (12,3%)
Micraspis discolor
0 0 0 0 0 3 2 0 0 0 1 3 3 5 17(13,9%)
So loai xuat hien va ty le (%) so voi
tong sd loai 2(40%) 1(20%) 3(60%) 2(40%) 4(80%) 3(60%) 4(80%) 3(60%) 3(60%) 2(40%) 3(60%) 3(60%) 4(80%) 4(80%) 122(5/100%) So lugng ca the sinh vat bidn doi theo thdi gian
la mpt hidn tirgng tu nhien phirc tap, cd tinh lau dai va dugc dieu khien bdi nhidu yeu td ndi tai trong quan thd sinh vat va ngoai canh. Dd cd tiie tim ra quy luat phan anh mot each tuong ddi chinh xac qua trinh nay can phai cd nghien ciru tiieo doi lau dii va lien tiac. Vi vay, nhiing sd lieu ti-inh hiy trong bang 3 chi mang tinh chat tiiam khao va dinh hudng cho
nhiing nghien cim tiep theo hudng nay. Mdt sd nhan xet hudc diu cho thay: Trong thdi gian tir diu thing 4 nam 2018 den hdt thing 5 nam 2019 da thu dugc tat ca 122 ca the hp riia cua 5 loii M. sexmaculatus, P.
japonica, L biplagiata, H octomaculata, M. discolor thudc phan hp bo riia bit mdi an thit Coccinellinae tai xa Minh Khai, Ha Ndi. Nhin chung, tai khu vuc nghidn ciru bg rua bat mdi an thit xuat hidn gin nhu
quanh nam. Duy nhat thing 5/2018 chi cd 1 loai Propylea Japonica-xnkt hien vdi 4 c i the. Bg riia Nhat Ban P. japonica la loai duy nhat ti-ong sd 5 loai duoc theo doi cd su xuat hien hdn tuc ti-ong sudt thdi gian dieu ti-a, vdi sd luong miu ldn, gdm 69 ca thd, chiem 56,5% tong sd cic ca the bp rua thu dugc. Loai bg nia 6 vin M. sexmaculatus xuat hien cung khi hen tiiC (12/14 thing). Tuy nhien, so ca the cua loai M.
sexmaculatus chi tuong duong vdi sd ca the loai M.
discolor va H octomaculata (16, 17 va 15 ca the).
Loai L. biplagiata xuat hien it nhat, trong thdi gian nghien ciiu, 5/14 thing dieu tra, sd miu thu duoc cua loii nay ciing rat thap, 5 man, chiem 4,1% tong sd c i the cac loai theo ddi. Nhu vay, cd the so bd nhan dinh loai bg rua Nhat Ban P. japonica la loai chiem uu the tai khu vue nghien ciiu d xa Minh Khai, Bic Tir Liem, HaNdi.
3.4. Buoc dau d^ xuit mpt sd bien phap nham bao vd cic loai bg riia Coccinellidae tai khu vuc nghidn ciiu
Quan the bg nia d' ca 2 khu vuc nghien ciiu chu yeu l i nhimg loii cdn triing thien dich cua nhidu loii sau hai vi nam benh. Vi vay, chung cd tidm nang ldn de sir dung trong phdng trir tdng hop sau bdnh hai cay trdng. Kdt qua nghien cim cdng cho thay su da dang cua smh canh sdng la mdt yeu td quan trgng tao nen su da dang va phong phu cua nhdm edn triing cd ich niy. Vi vay, can phai cd nhirng hien phip thich hgp nhim tao ra su da dang cao nhat cua quin the bp riia c i vi sd lugng loii va sd lupng ca the v i duy ti-i dugc tinh ti-ang niy ti-ong qui trinh phit trien cua he thdng cay trdng cin bio ve. De dat dugc muc dich niy cin phai tiiuc hien mdt he thdng cac bien phap cdng nghe canh tic khoa hpc thich hpp.
Xuat phit tii nhung ket qui nghidn ciiu cua de tai, hai nhdm bien phap duoc de xuat nhu sau:
(+) Han che sir dung thuoc trir sau benh cd ngudn gdc tdng hgp hoa hgc nhim gdp phin bao ve cac loai bg riia cd ich;
(+) Tang eudng tinh da dang cua he tiidng cay trdng trong he smh thii vudn qua nham gia tang su da dang thanh phin loai va sd luong c i tiie cita cac loii bp riia cd ich. Dac biet tang cuong tinh da dang ciia he thdng ciy ti-dng li hien phip dd thuc hien vi CO tinh tdng hpp da muc dich vi nd giiip tao ra didu kien sdng tdt hon cho quin the bp riia cd ich (nhieu noi tni ngu, da dang ngudn thiic an...) va cung gdp phin tang he sd su dung dat, da dang hoa sin pham
trdng trpt v i tang ngudn thu nhap cho ngudi dan. De cd nhirng dd xuat cu thd theo hudng niy can phai can cii vio didu kien cu the tai khu vuc ap dung.
4. KET LUAN
Thinh phan loii bg riia Coccmellidae b ca hai dia diem thudc xa Mmh Khai vi Thanh Lap l i 13 loai thudc 5 phan hp l i Chilocorinae (1 loii), Cocciduhnae (1 loai), Coccinellinae (7 loai), Epilachnmae (2 loii) va Scymninae (2 loai). Sd loai bat gap d- xa Minh Khai l i 9, sd loai bit gap d xa Thanh Lap li 13.
Trong tdng sd 13 loii bg rua Coccmelhdae thu dugc thi nhdm bo riia hat mdi an thit ed 9 loii thudc 3 phan hp Chilocorinae, CocciduUnae vi Coeeinellmae;
nhdm bp riia an l i cd 2 loai thudc phan ho Epilachnmae v i nhdm hp riia an nam cd 2 loii thudc phan hp Scymninae.
Trong 5 loii bp riia M. sexmaculatus, P.
japonica, L. biplagiata, H octomaculata, M. discolor theo ddi bien ddng so luong thi loii bg riia Nhat Ban P. japonica l i loai chiem tm the tai xa Minh Khai, Bic Tir Liem, H i Noi. Loii nay xuat hien ca 14 thing didu tra (tii thing 4 nam 2018 ddn thing 5 nam 2019), vdi tdng sd 69 c i the, chiem ty le 56,5%.
Loai xuat hien it nhat (5 lan/14 thing dieu tra) la loai L biplagiata.
LOI CAM ON
Ngbien cuu nay duoc tbuc hien vdi su hd tia kinh phi Clia dd tai: "Didu tra thanh phin loai bo nia (Coccmellidae) dcac tinh ddng bing va trung du Bic bd; xay dung bd mau vat bo riia phuc vu cdng tie nghien cdu khoa hoe", thude Chuong trinh Hd tia NCVCC 2019 Clia Vien Han lam Khoa hoe Cdng nghe VidtNam, Ma sd:NVCC09.06/19-19.
TAI LJEU THAM KHAO
1. Bao cao De tai eo sd phdng Smh thai cdn trimg, 1999 luu trii tai Vien Sinh thii Tai nguyen smh vat.
2, Bio cao dd tii co sd phdng Sinh thai cdn trimg, 2016, 2017, 2018, luu tiii tai Vien Smh thai Tai nguyen sinh vat
3.http: //vaas. org.vn/quy-trinh-quan-ly-cay-trong- tong-hop-tren-cay-huoi-dien-al2943.html.
4. Pham Van Lim, 1997. Phuong phap dieu tra thu thap thien dich ciia sau hai cay trdng ndng nghiep: 21-29. Vien Bao ve thuc vat. Phuong phap nghien ciiu Bao ve thuc vat Tap 1: Phuong phap dieu NONG NGHIEP VA PHAT TRIEN NONG THON - KY 2 - THANG 6/2019
KHOA HOC CdNG NGHE
tra CO ban dich hai nong nghiep va thien dich c i a a Viet Nam, Tap 2. NXB Khoa hpc Ky thuat Ha Noi.
chiing. NXB Nong nghiep, Ha Noi 1997. 99tr. 160 trang
5. Pham van l i m , 2002. Tai ngnyen thien dich jo. T 6 chiic Bao ton Thien nhien QuiSc te - lUCN cua sau hai - Nghien oiu va ung dung (quyen 1). Nha
Viet Nam. "Hudng din bao ton da dang sinh hoe xuSt ban Nong nghiw. Ha Npi. 141fr. ^.^^ ^^^,^p ^ , y^^^ ^ ^ „ ^^^_ j ^ ^ ^ y. .^ ^^^
^ 6. Pham Van Lam, 2013. Cac loai con trung va j j j ^oi, Viet Nam. 72 trang.
nhen nhd gay hai cay trdng phat hien d Vi6t Nam
11. Nguydn Cdng Thuat, 1997. Npi dung vi (quyen 1). Nhi xuat ban Ndng nghiep. Ha Ndi. „T,.,™„„ U- A-' t. i,' - L. - . . - -
^^ ' s s .H. .>. phuong phap dieu tra cu ban sau hai tren cay an 419ti-. 7. Pham Quynh Mai, 2009. Thanh phan loii bg
riia bat moi tren mdt sd cay trdng tai Ha Ngi va phu can. Bao cio Khoa hgc ve Sinh thii va Tii nguyen stnh vat: 656-661. Hdi nghi khoa hgc toan qudc ve Sinh thai vi Tii nguydn smh vat lin thu 3. Nha xuat
qua: 5-13. Vien Bao ve thuc vat. Phugng phap nghien ciru Bao ve thuc vat. Tap 1: Phuong phap didu tra co ban dich hai ndng nghiep v i thien dich cita chting. NXB Ndng nghiep, Hi Ngi 1997. 99tr.
12. Vien Bao ve Thuc vat, 1982. Kdt qui didu ti-a cdn triing 1967-1968. NXB Ndng nghiep.
ban Ndng nghiep Ha Ngi. ^3 ^^^^ ^ ^ ^ ^^. ^^ ^^.^ 2012. Dd in 'Thit 8. Hoang Diic Nhuan, 1982. Bo riia Coccinellidae
b Viet Nam, Tap 1. NXB Khoa hpc Ky thuat H i Ndi.
211 trang
9. Hoang Ditc Nhuan, 1983. Bg rua Coccinelhdae
trien mdt sd loai cay an qui cd gii tri kinh td cao tiiinh phd H i Ndi, giai doan 2012-2016" (Phe duyet kem theo Quyet dinh sd 1127/QD-UBND ngiy 13/03/2012 cua UBND TP. Ha Npi).
SPECIES COMPOSITION, FOODS AND CHANGE THE NUMBER OF INDIVIDUALS OF SOME SPECIES COCCINELLID ON CITRUS ORCHARDS IN THANH LAP (HOA BINH) AND MINH KHAI (HA NOI)
Pham Quynh Mai^', Nguyen Tlii Hoa^'
^Institute of Ecology and Biological Resources
^ South Luong Son High School
*University of Science and Technology, Vietnam Academy of Science and Technology Summary
This paper provides some initial research results on the species composition, foods and population fluctuation of Coccmelhd from apnl 2018 to may 2019 in citrus orchards in 2 Minb Khai communes (Bac Tu Liem, Ha NoO and Thanh Lap commune (Luong Son, Hoa Binh). In Mmh Khai there are 9 species of Coccinelhd, in Thanh Lap there are 13 species. Among the collected Coccinellid species, there are 9 species of carnivorous prey, 2 species belonging to the group that eat mushrooms, 2 species of leaf eaters. Tbe Propylea Japonica (Thunberg) is the dominant species in the study area in Minh Khai, with the 69 individuals accounting for 56.5% of the total 122 individual Coccinelhd collected. The Lemnia biplagiata was appears at least (5 times for 14 months of investigation).
Keywords: Species composition, fluctuation, number of individuals, foods.
Ngudi phan bidn: PGS.TS. Vii Van Uin Ngay nhan bii: 15/3/2019
Ngiy thdng qua phan bidn: 16/4/2019 Ngay duyet dang: 23/4/2019
