Nam 1902, mot nha khoa hoc da
dung tinh tu "ngoc" de dien ta loai lon bien va khang dinh rang chung
co bo nao voi be mat tron lang tuong tu nhu bo nao cua nhung ke ngoc. Tu do loai
lon bien con goi la ‘’bo bien’’ duoc xem la mot loai dong vat bien to
co vu suot ngay chi biet gam co duoi nuoc.
Cac thu nghiem trong phong thi nghiem o lon bien Hugh thuoc
bang Florida (My) da chung minh rang con vat nay co tri thong minh. No co kha
nang phat hien nhung tieng dong duoi bien, vi du nhu phat ra tu chan vit cua tau
thuy. Cac thu nghiem khac cho thay hoat dong bo nao cua no rat phuc tap.
Theo tac gia nghien cuu Roger Reep thuoc Truong Thu y Florida, ben trong bo nao
lon bien cung phuc tap tuong tu nhu bo nao cua cac loai dong vat khac. No khong
co ve bat thuong hay bi thieu. Tat ca cac te bao deu o dung cho.
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| (Anh: universe-review) |
Theo ong Reep, be mat tron lang cua bo nao lon bien khong noi len dieu gi. Tham
chi no da tung duoc huan luyen de phan ung voi nhung tieng rit phat ra tu cac
loa duoi bien, co kha nang nhan dang chiec loa nao trong so tam loa da phat ra
am thanh nay.
Cac nghien cuu da ghi nhan rang thi giac cua lon bien co ve han che mac du chung
co the phan biet mau sac, mot dieu hiem thay o loai dong vat bien co vu. Thu
nghiem tren bo nao cung chung minh chung co kha nang ghi nho nhung cuoc hanh
trinh di chuyen va cac nguon nuoc uong duoc.
Cac nha khoa hoc da nghi sai tu lau rang nao bo co nhung khe ranh tuong tu nhu
nao bo cua ca heo va nguoi la dau hieu cua tri thong minh.
Theo Dai TH Tp. Ho Chi MinhArticle source http://w4rum.com/1047.t
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