Phat hien loai ca map khong lo.

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Phat hien loai ca map khong lo

Ngay 29/9 vua qua, nhung dau vet hoa thach cua loai ca map khong lo dai toi 16m da duoc phat hien tai Panama. Day la loai ca map co lon, giong nhu phien ban cua loai ca map trang hien dai, co ten la Megalodon (Charcharocles megalodon)..

Phat hien loai ca map khong lo - Ban co dau.
Phat hien loai ca map khong lo - Ban khong dau.
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Phat hien loai ca map khong lo.

Loai ca map nay, duoc coi nhu la loai dong vat an thit dau tien trong dai duong o vao thoi diem khoang 1,5 trieu nam truoc day, voi chiec rang dai khoang 15 cm. Nhung nha co sinh hoc da cho rang chi co mot gia dinh doi voi nhung loai thu hung du nay tung ton tai o khu vuc  Nam Carolina ngay nay.

O bo bien Caribe  o Panama, cac nha nghien cuu  da tim thay nhung chiec rang da so co kich co la 1,2 cm va 7,5cm.  

Rang cua loai ca map Megalodon (Anh: Discovery)

Mot nhom nghien cuu  o Dai hoc  Florida  o Gainesville da so sanh mau hoa thach voi loai Charcharocles Megalodon khac va xac dinh, mau rang hoa thach duoc tim thay la cua mot con ca map chua truong thanh.

O ca Panama va Nam Carolina, loai Megalodon deu sinh song o cac khu vuc  nuoc nong va am, thuan loi cho viec sinh san.

Mac du vay, gia thiet ve khu vuc  Nam Carolina van con gay tranh cai. Co su phan loai ca ve rang cua loai ca map Megalodon lon va nho cung nhu la hop so cua ca voi von la moi cua ca map truong thanh.

Nhung Pimiento (thanh vien nhom nghien cuu) cho rang khong chac chan la loai ca map chua truong thanh nay co the bi an thit nhu ca voi vi nhung con nay co the dai toi 6m, co kich thuoc  tuong tu nhu mot con ca map trang truong thanh. 

"Nghien cuu cung chi ra rang mot so loai ca map chua truong thanh khong tieu ton nhieu thuc an", ba da viet trong mot email, de cap den van de “Nhung loai ca map con ton tai ngay nay”.

Pimiento trinh bay nghien cuu  cua nhom tuan truoc tai cuoc hoi thao cua Hoi co sinh hoc nhung loai dong vat co xuong song tai Bristol, Vuong quoc Anh.

Phat hien nay nhan manh tam quan trong  ve moi truong  song cua loai ca map, ca thoi co dai va hien dai.

"Nhung khu vuc  nay la moi truong  song thiet yeu cho su song con cua loai ca map, va khong co chung thi he dong vat se tro nen thieu sot", Pimiento noi. "Bay gio, tai cac khu vuc ven bien, con nguoi  dang ra suc danh bat cac loai ca. Vi vay, nhung nghien cuu nay la cho chung ta biet duoc rang cac khu vuc  nay da tung la noi sinh song cua cac ca map trong hang trieu nam, va chung ta can phai gin giu khu vuc  de loai ca map co the sinh soi nay no thanh cong va song sot". 

(Anh minh hoa: Treehugger)

"Megalodon rat co the bi tuyet chung boi vi no qua to lon, rat kho khan trong viec tim du nguon thuc an de ton tai," Albert Sanders o Bao tang Charleston o Nam Carolina noi.

Ong cung noi them rang: "Con nguoi can phai thay doi. Chung ta khong biet  rang chung ta dang lam nhieu hoat dong  gay thiet hai den tinh da dang loai trong dai duong ngay nay".

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Updated: 05/10/2009 | Views: 37 | Comments: 0

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Hien tai chua co binh luan nao ve bai viet Phat hien loai ca map khong lo!

Ban co y kien gi ve bai viet Phat hien loai ca map khong lo nay? Hay goi suy nghi, binh luan, danh gia, loi khuyen ... cua ban ve bai viet Phat hien loai ca map khong lo ban tai day.

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