T H A I V H P H A I V L O A I THAIV MEIVI CD KlCH THUIXC LOni (LOP: EiASTROPODA, BIVALVIA, CEPHALOPODA)
O VLJIXIG VEIV BIEIV PHLI QUDC, KIEIM GIAIVG
Pham Thi Phong LanS Pham Minh Tii^, Thai Thanh Lugm'
TOMTAT
Trong nam 2018, hai cupc khao sat thanh phSn loai than mem co kich thuoc lon a vimg ven bien Phu Qudc dirpc thuc hien vao thang 01/2018 va fhang 6/2018. Bang phuong phap so sanh hinh thai, xac dinh duoc 49 loai thuoc 26 ho, 14 bo cCia nganh dong vat than mfem. Trong do, lop chan bung (Gastropoda) co 24 loai, lop hai manh vo c6 20 loai va lop chan dau (Cephalopoda) co 5 loai. So luong loai ciia hai khu vuc Dong va Tay Nam dao Phii Quoc co su chenh lech khong 1cm (42 va 44 loai). tuy nhien ca cau thanh phan loai tai hai khu vtrc lai co su khac nhau. O khu vuc Dong Nam, lop bai manh vo (Bivalvia) co sd lupng nhieu nhat voi 20 loai (chiem 47,62%); con khu vuc Tay Nam, lop chan bung (Gastropoda) lai co lupng nhiSu nhat voi 23 loai (chiem 52,27%). Xac dmh duoc 49 loai dong vat than mim thuong xuyen dugc khai thac lam thuc pham, do my nghe, dirpc heu, trong do co 3 loai se nguy cap (VU), 2 loai nguy cap (EN).
Tir khoa. Bong vat than mem kich thudc Idn, Phd Qudc, thanh phan loai, vimg ven bien.
1 . Mir DAU
Dao Phu Qudc la mpt huyen dao ed tiem nang Idn phat trien kinh te va du Uch. Didu nay giup nang cao cupc sdng cho ngum dan dia phuong. Tuy nhien, viec danh bat thidu kidm soat cac loai thuy hai san ndi chung va dpng vat than mdm noi rieng tai Phii Quoc de cung cap eho dich vu du hch da anh hudng den moi trudng va tae dong manh me ddn ngudn loi thuy sinh cua vung bien Phii Qudc ndi rieng, vung bien Tay Nam ndi chung. N6 lam giam su da dang va phong phii ve thanh phan va sd lupng loai sinh vat bien ciia viing nay.
Ddng vat than mem (chii yeu la cae Idp Gastropoda, Bivalvia va Cephalopoda) la mpt trong nhimg ddi tupng hi tac dpng nhieu vi chiing la ngudn thuc pham co chat lupng cao, cung cap true tiep cho con ngudi, ngoai ra chung con c6 gia tri ve thuong mai, du lieh, che bien hai san xuat khau va ca h-ong y hpc. Tuy nhien can nhin nhan thuc te rang, cae nghien ciiu eu the ve than mdm d vung bien nay vln edn rat han che. Chinh vi vay, viec danh gia hien trang nguon Ipi dong vat than mdm la rat cin thiet, tir dd cung c&p CO sd khoa hpc eho cong tac bao tdn, phuc hdi va phat tnen ngudn loi tu nhien, phuc vu phat trien ben viing. Vi vay, da tien hanh cupc khao sat de ghi nhan cac bai than mem cd kich thude lon
cdn phan bd b vung ven bien Phii Qudc nham cung cap them thong tm ve ddi tuong nay d- khu vuc nghien cuu.
Z. PHUDNG PHAP NGHei CUU
2.1. Thdi gian va dia di^m nghien ciiu 2.1.L Thdi gian
Trong nam 2018 da td chuc hai chuyen khao sat va thu mau thue dia.
Dpt 1: tii ngay 30/01/2018 den 02/02/2018.
Dot 2: to ngay 4/6/2018 de'n 6/6/2018.
2.1.2 Dia didm
Vimg ven bien phia Tay va Dong Nam dao Phii Qudc.
2.2. Phuong phap didu tra thuc dia - Phuong phap thu man va bao quan rrmu:
' Truong Dai hoc Kien Giang Email- ptplaiil55@gmail com
Hinh 1. So do dia di^m nghien cim
NONG NGHIEP VA PHAT TRIEN NONG THON - KY 1 - THANG 7/2019
KHOA HOC CONG NGHE Man thu dupe bang ludi cao day va lan bat tai 6
diem b vimg bien phia Tay Nam (1, 2, 3) va Dong Nam (4, 5, 6) dao Phii Qudc (Hinh 1). Mlu dupe thu 0 nhidu dp sau khac nhau, noi sau nhat 15 m nuac.
Tpa dp mlu thu eiia 6 diem dupe trinh bay d bang 1.
Diem bat dau 1 2 3 4 5 6
Vidd 10»13'20"
10»08'13"
10W82"
10''18'62"
lOWQl"
10''00'52"
Kinh do 103»93'73"
103°94'96"
103"96'27"
104»10'14"
104°08'97"
104°08'37"
Ngoai ra, trong qua trinh thu thap sd heu, phan tich thanh phan loai, mdt sd nhdm loai dpng vat than m^m Cling dupe tien hanh thu thap bd sung tai diuyen danh bat cua ngu dan khai thac true tiep tai cac khu vtrc nghien cuu. Tuy nhien, chi thu 1 mlu muc dng Trung Hoa to tau khai thac ciia ngu dan.
Con lai 48 mlu deu dupe thu bang ludi eao va lan bat.
Mlu vat dupe bao quan bing cdn 75° ngay sau khi thu, sau do dua ve phdng thi nghiem tach nhdm va dmh ten.
Bang 2. Cac loai ddng vat than m^m cd kich thuoc Idn thu dupe tai vtmg bi^n Phii Qudc, Kidn Giang v i gia tri kinh t^, quy hidm cua chiing
2.3. Phuong phdp dinh loai
Dong vat than mem duoc dinh loai hang phuong phap hinh thai so sanh (hinh thai ngoai) dua vao cac tai lieu: Abbott & Dance (1986), Takashi Okutani (2000), Hylleberg & Kilbum (2003)[1], [11], [3].
Xu ly va phan tich sd Ueu: Sd Ueu dupe phan tich, xu ly thdng ke tren phln mem ung dung Microsoft Excel.
3.KETqUAVAT1IA0LUAN
3.1. Thanh phan loai dpng vM than m^m kich thudc 16n ghi nhan dupe tai vting bi^n Phii Qudc, Kien Giang
Kdt qua dieu tra, phan tich eae mlu vat ngoai thue dia va trong phong thi nghiem da xac dinh duoc 49 loai thupc 26 hp, 14 bp cua 3 Idp d6ng vat than mem: chan bung (Gastropoda), hai manh vd (Bivalvia), ehan dlu (Cephalopoda) phan bd trong viing bien Phii Qudc, Kien Giang. Chi tiet eae loai ghi nhan dupe trinh bay a bang 2.
STT
1 2 3 4 5 6 7 8 9 10
n
12
Ten khoa hpc LOP CHAN BUNG (GASTROPODA) Ho Babyloniidae
Babylonia areolata (Link, 1807) Ho Btu^idae
Bursa rana (Lmnaeus, 1758) Ho Cassidae
Cassis comuta (Linnaeus, 1758) PhaUum glaucum (Lmnaeus, 1758) Ho Cypraeidae
Cypraea arabicaWnna^ws,, 1758 Cypraea angustata (Gmelin, 1791) Cypraea tigris Linnaeus, 1758 Haliotis asinina Linnaeus, 1758 Hahotis ovinaQm^m, 1791 Ho Melongenidae fhigilina pugihna (Born, 1778) Ho Muricidae
Chicoreus ramosus (Linnaeus, 1758)
Ten tieng viet
Oc huong Oc bien Oc kim khoi vang Oc kim khoi Oc sii den Oc SIT vang Oc sii Oc sii van hd Bao ngu vanh tai Bao ngu blu due 6 e long 6 e gai tring
Giatn kinhtd
TP TP, MN TP.MN TP,MN TP,MN TP,MN TP,MN TP, MN, DL TP, MN, DL TP,MN TP,MN
Miic do dedoa
VU
vu
vu
-
13 14 15 16 17 18 19 20 21 22 23 24
25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40 41
Drupella rugosa (Bom, 1778) Manclnella echinata (Blainville. 18321 Rapana venosa (Valenciennes. 1846) Ho RaneUidae
Cymatiumpyrum (Linnaeus, 1758) Hp Strombidae
Margisti-ombus robustus (G. B. Sowerby, 1875)
laevistrombus turturella (Roding, 1798) Lambis tivncate (Humphrey, 1786) Ho TeguJidae
Tectus conus (Gmelin, 1791) Tectus pyramls (Born, 1778) HoTurbinidae
Turbo bruneuus (Roding, 1798) HQ Volutidae
Cymbiola nobilis (Liglitffoot, 1786) Melo melo (Liglitfoot, 1786) LOP HAI MANH VO (BIVALVIA) Ho Arcidae
Area virescens (Reeve, 1844) Anadara antiquata (Lmnaeus, 1758) Anadara ehrenbergKDunker, 1868) Anadara granosa (Lmnaeus, 1758) Ho Cardiidae
Tridacna maxima (Roding, 1798) Vasticardium flavum (Lmnaeus, 1758) Ho Mytilidae
Mytella charruana (d'Orbigny, 1842) Perna vIridislAnne, 1758 Ho Ostreidae
Crassostiea rhizophorae (Guildmg, 1828) Ho Pectinidae
Amusium pleuronectes (Unnaeus, 1758) Mimachlamys crassicostata (Sowerby, 1842) Mimachlamys gloriosa (Reeve, 1853) Ho Pinnidae
Atrinapectinata(ymne, 1767) Pinna muricata (Linnaeus, 1758) Pinctada margarltifera (Linnaeus, 1758) Ho Psammobiidae
Plebidonax deltoides (Lamarclt, 1818) Ho Pteriidae
Pteria penguin (Rodmg, 1798) Ho Solenidae
Ocgai
Oc nhay Oc nhay Oc tai be trdng Oc dun conus Oc dun due Oc mat trang mifing vang
Oc so dira Ocgiac
So queo So queo Soveo So huyet Trai tai tirong So duong (So mong) Trai xanh Vem vo xanh Hau da Diep nau vien vang So quat Diep quat So mai, coi bifen mai Ban mai Ban mai Chem chep Trai lum biia
TP,MN TP,MN TP,MN TP.MN TP.MN TP.MN TP, MN TP.MN TP.MN TP.MN
TP.MN TP, MN
TP TP TP TP TP.MN TP
TP,MN TP,MN TP TP TP TP TP TP TP TP TP, MN
EN
EN
NONG NGHIEP VA PHAT TRIEN NONG THON - KY 1 - THANG 7/2019
KHOA HOC CONG NGHE
42 43 44
45 46 47 48 49
Sokn stiictiis Gou\d, 1861 Ho Veneridae
Marcia hiantina (Lamarck. 1818) Paphia undulata (Bom. 1778) U i P C H A N D A U (CEPHALOPODA) Ho Lobginidae
Sepioteuthis lessoniana Lesson. 1830 Loligo chinensis Gray. 1849 Ho Octopodidae
Octopus omatiis (Gould. 1852) HQ Sepiidae
Sepia lycidas Gray, 1849 Sepia pharaonis (Ehrenberg. 1831)
Oc mong tay So voi So lua
Muc la
Muc dng Trang Hoa Bach tuoc Muc nang mat cao Muc nang van ho
TP TP TP
TP TP TP TP TP
ty tilich: TP - Thuc pham; MN-My nghe: DL-Duoc heu; VU-loai se nguy cap; EN - loai nguy cap.
Trong do. lop chan bung (Gastropoda) xac dinh chan diu (Cephalopoda) xac dmh duoc 5 loai (chiem duoc 24 loai (chiem khoang 48.98%). lop hai manh vo 10,20%) (Bang 3).
(Bivalvia) xac dinh duoc 20 loai (chiem 40,82%), lop
Bang 3. Sd lirgng loM dpng vat thin m t o kich thu6c 16n thu diroc tai kbu vuc nghi6n cuu theo timg Idp Nhom
Gastropoda Bivalvia Cephalopoda Tong cpng
Bo 4 7 3 14
Ho 13 10 3 26
Giong 21 17 4 42
Loai 24 20 5 49
Tyle loai (%) 48,98 40,82 10,20 100,00 Lop chan bung (Gastropoda): xac dinh duoe 24
loai thuOc 13 hp, 4 bd. Trong dd, hp Oc su (Cypraeidae) va hp dc gai (Muricidae) 4 loai; hp dc nhay (Stt-ombidae); hp Bao ngu (Haliotidae ), hp Oc 3un (Tegulidae) va hp de (Volutidae) 2 loai, eac hp cdn lai chi thu dupe sd luong it mpt loai. Trong tdng sd 24 loai duoe xac dinh, cac loai thudng gap nhu:
Cypraea arabica, Cypraea angustata, Cypraea eglantina, Cypraea tigris, Chicoreus ramosus, Drupella rugosa, Mancinella echinata, Rapana venosa, Marglstiombus robustus, Laevistiombus turturella. Nhung ho cd sd luong loai nhieu la do chiing ed loai xuat hien ea miia mtra va miia kho, dong thoi cung xuat hien df ea 2 khu vuc thu mau khao sat.
Lop hai manh vd (Bivalvia): xac dinh duoe 20 loai thupc 10 ho, 7 bp. Su phan bd thanh phan loai giira cac ho cung cd su chenh lech. Hp sd (Arcidae) chi^m sd lupng loai lon nhat (4 loai), hp trai ngpe (Pectinidae) va hpc ban mai (Pinnidae) cd 3 loai. Ho so (Cardiidae), hp trai (Mytihdae) va hp sd (Veneridae) ed 2 loai, cac hp cdn lai cd 1 loai. Cac loai thudng gap la: Area virescens, Anadara sntiquata, Anadara ehrenbergl, Anadara granosa.
Atiina pectinata. Pinna muricata, Pinctada margaritrfera, Amusium pleuronectes, Mimachlamys crassicostata, Mimachlamys gloriosa...
Lop chan dau (Cephalopoda): xac dinh dupe 5 loai thuoc 3 ho, 3 bp. Day la nhdm loai kinh te quan trpng ed phan bd a khu vuc bidn dao Phii Qudc khao sat nhu: Sepioteuthis lessoniana, Loligo chinensis.
Octopus ornatus. Sepia lycidas. Sepia pharaonis ...
Cac loai muc nang bat gap nhidu tai khu vuc thu mau do dac tinh phan bd eiia chiing chu yeu d vimg bien dp sau nhd va gan bo hon, eon muc dng it vi muc dng phan bd chu yeu b viing bien sau xa bd. Miia vu khai thac ehinh cua muc dng (Lobginidae) va muc vao cac thang 1-3 va 6-9, eac loai muc nang (Sepiidae) thang 6-9 va thang 11 ddn thang 3 nam sau. Chinh vi vay, vao thdi gian khao sat deu bat gap cac ddi tupng nay.
So sanh ve thanh phln loai than mdm kich thudc lon cua khu vuc nghien ciiu voi mpt sd khu vuc khac nhu viing bien Cu Lao Cham, Nha Trang, Phii Yen va nghien cuu cimg khu vuc tai Phii Qudc (trong nghien cuu trudc day) cho thay thanh phan loai ghi nhan a viing bien ven bo Phii Qudc la khong phong phti bang cac khu vtrc nghien ciiu khac. Tuy nhien, so vdi nghien ciiu trudc day voi Nguydn Van Long va 91
ddng tac gia (2006) va Nguyen Xuan Niem (2011), so vuc khac nhu vay la do anh hudng cua nhidu yeu td luong bai tuong duong nhau (Bang 4). Su chenh nhu: pham vi thu mau, phuong phap thu mau, dung lech sd lupng loai dpng vat than mem tai vung bien cu thu man, vi tri thu man, dp sau tiiu miu va kich Phu Qudc voi cac nghien ciiu trudc day b cac khu thuoc ddi tupng thu....
Bang 4. So sanh thanh phan loai than mfai voi mpt so ngfaiSn cau Idiac g vung bifa Phii Q u ^ STT
1 2 3 4 5 6 7
Dia diem nghien cuu Phii Quoc Phii Qudc Phu Quoc Cu Lao Cham Nha Trang Phii Yen Tmong Sa
So luong loai 49 4«
48 97 65 75 52
Nguon tai lieu Nghien cuu nay
NguyJnXuan Niem (2011) (91 NguySn Van Long etal, 2006) [7]
NguvSn Van Lone etal. 2008 18]
NguySn Van Long etal, 2007 161 Hoang Van Ben va etal, 2010 121 UngVanKeng(19%) 141 3.2. Ghi nhan su XU& hien loai a hai khu vuc
DSng Nam ra 1 ^ Nam dao Phii Quoc
Ket qua khao sat, phan tich cho thay sd lupng loai than mem thu dupe giiia hai khu vuc nghien cuu Dong Nam (42 loai) va Tay Nam (44 loai) dao Phu Qudc khong ed su chenh lech Idn. Tuy nhien sd lupng loai eua timg lop than mem gitra hai khu vuc lai CO su chenh lech nhau. Cu the, Idp chan bung (Gastropoda) cr khu vue phia Tay Nam (23 loai) thu dupe so lupng loai cao hon khu vue phia Dong Nam (18 loai). Nhung Idp hai manh vd (Bivalvia) khu vuc phia Dong Nam (20 loai) lai cd sd lupng loai cao hon khu vuc phia Tay Nam (16 loai). Trong khi lop chan dau (Cephalopoda) it bien dpng giijra hai khu vuc nghien cuu (Bang 5).
Bang 5. Sd hipng loai d6ng vat than m^m Mch thuoc lon theo bing lop d khu vue phia D6ng ra
Tay Nam dao Lop
Gastropoda Bivalvia Cephalopoda
Tong cong
Phia Dong (Nam dao)
18 20 4 42
Phia Tay (Nam dao)
23 16 5 44
Bh-ahia
Hinh 2. Ctrcau thanh phin loai than mem phia DODO {>'am dao)
Hinh 3. Cacao Iha^ phis loai than mem phia Ta> (Nam dao)
Ca cau thanh phan loai ed su khac nhau giiia hai khu vue Dong va Tay Nam dao Phii Qudc. Co cau thanh phan loai than mem a khu vue phia Dong Nam, lop hai manh vd (Bivalvia) chiem ty le cao nhat voi 47,62%, sau dd den Icrp chan bung (Gastropoda) voi 42,86% va cudi cimg la lop chan dau (Cephalopoda) vdi 9,52%. Tuy nhien, ddi voi khu vuc phia Tay Xam sd luong loai cua lop chan bung (Gastropoda) ehidm t>' le cao nhat voi 5 2 ^ % , sau dd den lop hai manh vo (Bivalvia) voi 36,36% va cuoi cimg vin la Idp ehan dau (Cephalopoda) vdi 11,36%
(Hinh 1 va 2). Cd su khac nhau ve ca cau thanh phan loai cua dpng vat than mem 6 hai khu vuc nghien oiu nhu vay la do anh htrong cua tinh chat ndn day b hai khu vuc, moi trudng sdng va tinh an ciia cac loai than mdm. Cac loai thupc lop hai manh vd (Bivalvia) thudng sdng viii minh va co tinh an loc nen phan bd ff ndn day mdm, day cat bim hoac tren tham co bidn.
Vi vay chiing thudng tap trung d' phia Dong Nam dao noi cd nen day mdm, cat bim va su phan bd eua tham CO bien vdi dien tich rong tren vimg bien dao Phii Qudc. Ket qua nghien ciiu cua Le Thi Xhut va ddng tac gia (2005) [5] eho thay tham ed bien thuong thay phan bd d phia Bac, Dong Bae, vimg phia Dong va Nam eua dao Phii Qudc. Mot so loai dac tnmg cho
92 NONG NGHIEP VA PHAT TRIEN NONG THON - KY 1 - THANG 7/2019
KHOA HOC C 6 N G NGHE
viing bien khu vuc phia Dong Nam nhir Area virescens, Anadara antiquata, Anadara ehrenbergl.
Madam granosa, Perna viridis, Atiina pectinata, Vasticardium flavum. Trong khi Idp chaji bung (Gasfopoda) thudng phan bd d' nen day cat hoac tren nen ran san hd nen phan bd tap trung d phia Tay Nam dao. Mpt sd loai chi xuat hien d- phia Tay Nam dao vi chiing sdng tren mdi trudng dac tnmg la cae ran san ho. Cac loai dae tnmg cho vung ndn day eat, day sdi va ran san ho: Cassis comuta, Cypraea arabica, Cypraea angustata, Cypraea tigris, Cypraea eglantina, Drupella rugosa, Tridacna maxima, Tectus pyrami, Tectus conus.
3.3. Gia tri su dung ngudn loi ddng vM than m^m Khai thac, danh bat dpng vat than mdm la ngudn sinh ke chu yeu cua mpt bp phan dan ngheo ven bien. Hang ngay hp khai thac dc, trai, sd... lam thuc pham hoac mang ban de kiem tien sinh sdng, chi tieu cho gia dinh. Giai quydt tdt van de sir dung hpp ly ngudn loi nay se gop phan xoa ddi giam ngheo eho dan eu ven bien. Theo sd lieu thdng ke san lupng khai thac thuy san cua Phdng Kmh te huyen dao Phii Quoc (2015) eho th^y, san luong khai thac ctia muc va cae loai so, dc chiem san lupng cao sau ca (Bang 6).
Bang 6. San luvng khai thdc thuy san cua dao Phd Qudc tir nam 2010 d & 2015 Loai
- Ca cac loai -Tom. tep cac loai - Muc cac loai - So, 6c cac loai
Tong cOng
Don VI tinh tan tan tan tan t&n
2010 105.652
4.690 6.600 4.520 121,462
2011 133,125
5,255 6,655 5,910 150,945
2012 144,706
5,489 7,000 5,405 162.600
2013 141.325
6.604 5.604 6.733 160,266
2014 158,530
5,586 6,644 8,251 179,011
2015 159,030
5,530 6,600 8,840 180,000 Qua qua trinh khao sat thuc te va khao sat ngudi
dan tham gia khai thac hai san, da xac dinh duoe 49 loai dong vat than mem thu dupe thuong xuyen dupe su dung lam thuc pham, dd my nghe va duoc lieu (Bang 2). Day cung la nhiing loai ddng vai trd chinh trong CO c^u thanh p h ^ ngudn loi hai san ngoai ca a viing bien Phii Qudc.
Nhdm lam thue pham: 49 loai thudng xuyen dirge khai diac ddu dupe dimg lam thuc pham. Dang chu y la cae loai: de dun, bao ngu, trai tai tupng, muc ong, muc la, muc nang, cac loai so...
Nhdm lam my nghe: Mot sd loai trai, de sau khi su dung phan thit lam thuc pham, phan vo cdn lai cd the gia cong thanh dd my nghe rat dupe tra chuong nhu kham trai, xa cir. Mdt sd loai nhu trai ngpe, diep ngoc edn cho ngpe trai.
Nhdm lam dupe Ueu: Cae loai bao ngu cd the ngam rupu ehe thanh thude bd, vd diing de chira tri benh mat md, dau day than kinh toa... trong y hpc cd huyen Trung Qudc (Nie, 1992) [10]; vd ea muc che bien thanh thudc chdng edi xuong, ngpe trai cd the dimg de chu-a benh thin kmh...
Ngudn gen quy hiem: Ddi chieu Sach Dd Viet Nam (2007) va Danh muc cac loai thuy sinh quy hie'm cd nguy co tuyet chung d- Viet Nam can dupe bao ve, phuc hdi va phat hien (Ban hanh kem theo Quyet dinh 82/2008/QD- BNN ngay 17/7/2008 cua
Bo Nong nghiep va Phat tnen nong thon), da xac dinh duoc 3 loai se nguy cap (VU): Cassis comuta, Hahotis asinina, Haliotis ovina, 2 loai nguy cap (EN):
Tectus pyramis, Tridacna maxima phan bd trong vimg nghien cuu.
4. KET LUAN
Xac dinh dupe 49 loai dpng vat than mem co kich thude lon, trong do lop chan bung (Gastropoda) 24 loai, Idp hai manh vd (Bivalvia) 20 loai, lop chan dau (Cephalopoda) 5 loai tai khu vue ven bien dao Phd Qudc.
Co cau thanh phan loai d khu vuc Dong Nam co su khae biet vdi khu vue Tay Nam dao Phu Qudc.
Khu vuc Dong Nam, Idp hai manh vd (Bivalvia) cd sd lupng loai nhieu nhat 20 loai (chiem 47,62%); khu vue Tay Nam, Idp chan bung (Gastropoda) cd sd lupng loai nhidu nhat 23 loai (chiem 52,27%).
Ket qua nghien ciiu da xae dinh duoc 49 loai dpng vat than mem thuong xuyen dupe khai thac lam thuc pham, do my nghe va dupe lieu. Xac dinh trong danh muc cd 3 loai se nguy cap (VU), 2 loai nguy cap (EN).
LOI CAM ON
Tac gia xin chan tiianh cam an ThS. Bui Quang Nghi (Vien Hai duong hoc) va ThS. Danh Thao (Dai hoc Kien Giang) da hd tio thu, phan tich mdu va
93
cung cap cac tai heu can tiiiet de chung tdi hoan thanh bai bao nay.
TAI UEU THAM KHAD
1. Abbott, R. T. & Dance, S. P., 1986.
Compedium of Seashells. American Malacologists Inc., Florida. 411 pp.
2. Hoang Xuan Ben, Hua Thai Tuyen, 2010.
Dpng vat khong xuong sdng ed kich thudc lon tren ran san ho vimg ven bidn Phii Yen. Tap chi Khoa hoc
va Cdng nghe bien. Tap 10 (2010). Sd 4, Tr 51-66.
'^. Hylleberg, J., and Kilbum, R. M., 2003.
Marine molluscs of Vietnam: annotations, voucher material, and species In need of verification. Tropical Manne Mollusc Programme (TMMP).
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Tuyen tap nghien cuu bien. Tap VII. NXB Khoa hpc va Ky Thuat, ft-ang 94-102.
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THE SPECIES COMPOSITION OF MACRO-MOLLUSK (CLASS: GASTROPODA, BIVALVIA, CEPHALOPODA IN THE COASTAL WATERS OF PHU QUOC ISLAND, KIEN GIANG PROVINCE
Pham Thi Phong Lan, Pham Mmh Tu, Thai Thanh Luom Summary
In January and June 2018, two surveys on the species composition of macro-mollusk (Class: Gastropoda, Bivalvia, Cephalopoda) m the coastal area of Phu Quoc island was conducted. By applying the morphological method, the results showed that 49 species belongmg to 26 families, 14 orders of 3 classed of mollusk, in which there were 24 species of Gastropoda, 20 species of Bivalvia and 5 species of Cephalopoda.
The number of species in the Southeast and Southwest of Phu Quoc Island were not considerably different (42 and 44 species), although the composition of species in the two regions was definitely different. A number species and the percentage of Bivalvia was highest with 20 species (47.62%) in the Southeast;
Gastropoda with 23 species (52.27%) in the Southwest. There were 49 often exploited species for food, handicrafts, medicine. Among them, there were 3 vulnerable species (VU), 2 endangered species (EN).
Keywords: Macro-mollusk, Phu Quoc island, the species composition, the coastal area.
Ngudd phan bien: PGS.TS. Hd Thanh Hai Ngay nhan bai: 12/3/2019
Ngay thong qua phan bi^n: 12/4/2019 Ngay duy^t dang: 19/4/2019
94 NONG NGHIEP VA PHAT TRIEN NONG THON - KY 1 - THANG 7/2019
