surge之科学教育帖

winterzeit

LZ 是不是得在标题上加点提示啊。。。。。饭前饭后慎入之类的。。。

发点有美感的行不。。。

不要马甲

毛片

牛叉！！！

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Limax maximus, an air-breathing land slug
) X: \7 k- Q( j. U6 N+ WSlug is a common non-scientific word which is most often applied to any gastropod mollusk whatsoever that has a very reduced shell, a small internal shell, or no shell at all. Gastropods with a coiled shell that is big enough to retract into are called snails.
1 c. k" K" p! U, UA slug-like body is an adaptation which has occurred many times in various groups of snails, both marine and terrestrial, but the common name "slug" is most frequently encountered as applied to air-breathing land species, including a few agricultural and horticultural pest species. This article is primarily about air-breathing (pulmonate)

Land slugs, like all other gastropods, undergo torsion (a 180º twisting of the internal organs) during development. Internally the anatomy of a slug clearly shows the effects of this rotation, but externally the bodies of slugs appear rather symmetrical, except for the positioning of the pneumostome, which is on one side of the animal, normally the right hand side.
The soft, slimy bodies of slugs are prone to desiccation, so land-living slugs are confined to moist environments.

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Banana slug, Ariolimax columbianus, Univ. of Calif. Santa Cruz

Mating Great Grey Slug found in Maryland, USA

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Woodlice (known by many common names; see below) are terrestrial crustaceans with a rigid, segmented, calcareous exoskeleton and fourteen jointed limbs. They form the suborder Oniscidea within the order Isopoda, with over 3,000 known species.
Woodlice in the genus Armadillidium can roll up into an almost perfect sphere as a defensive mechanism, hence some of the common names such as pill bug. Most woodlice, however, are not able to do this.

Porcellio scaber (left) and Oniscus asellus (center)

linxing

那种类似蜗牛的东东炒了好吃吗?

不要马甲

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[ 本帖最后由 不要马甲 于 11.7.2008 23:19 编辑 ]

不要马甲

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上海最近出没的新物种：鹿人

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Silberfischchen
Die heim lichen Wohnungs genossen leben selbst in der rein lichsten Wohn ung. Zu sehen bekommt man sie aller dings selten - sie leben ver borgen in kleinsten Ritzen. Diese über raschte ich, als ich Nachts auf stand und das Licht ein schaltete und sie die Wohnung inspizierten. Diese Urtier chen leben von Zellu lose wie Tapeten kleister und ähn liches - sind also völlig harm los. Sie sind mit den Felsen springern ver wandt, die Ähn lich keiten sind auch unver kennbar.

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