วันเสาร์ที่ 30 กรกฎาคม พ.ศ. 2554

Silk Worm Factory, Thailand Asiatravel.com

For reservations: Video www.asiatravel.com more: book.asiatravel.com The silkworm is the larva or caterpillar of Bombyx mori (Latin: "silkworm of the mulberry tree"), the domesticated silk moth. A moth in the family Bombycidae, it is very important economically as the producer of silk. It 'totally dependent on humans for its reproduction and no longer occurs naturally in the wild. Silk has been practiced in China since at least 5000 years. A favorite food Silkworm MulberryLeaves, but can also eat the leaves Osage orange, or Tree of Heaven. And 'originally from northern China. Its nearest wild relative is Bombyx mandarina, the situation is that hybridize with the native taxon, and ranges of northern India to northern China, Korea and Japan. It is not known when the domestic silkmoth diverged from its wild relatives, but only that the indigenous people originally from the inland Chinese rather than Japanese or Korean stock market. [1] molecular clock studiessuggesting is not an age of many millions of years [edit] be taken seriously, considering that both species have a constant speed, since their divergence develops. take [edit] This is not true for the domestication process of acceleration of the pace of evolution (a similar problem concerns the attempt, the phylogeny subspecies of Western honey bees to solve). In fact, the domestic silkworm has undergone such strong artificial selection thatFull ...

ไม่มีความคิดเห็น:

แสดงความคิดเห็น