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发表于 20-5-2014 03:14 AM
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不好意思，凑凑热闹，来谈谈蚯蚓。
一如其他物种，蚯蚓有许多种类，各种类在断体复生的能力方面有所不同。
生物学家已有研究报告，指出某些种类是有能力分别重生头部与尾部的。
以下文本，摘自英文维基百科，网页是http://en.wikipedia.org/wiki/Earthworm#Regeneration
Regeneration
Earthworms have the ability to regenerate lost segments, but this ability varies between species and depends on the extent of the damage. Stephenson (1930) devoted a chapter of his monograph to this topic, while G.E. Gates spent 20 years studying regeneration in a variety of species, but “because little interest was shown”, Gates (1972) only published a few of his findings that, nevertheless, show it is theoretically possible to grow two whole worms from a bisected specimen in certain species. Despite denial of this phenomenon by some current experts,[who?] Gates’s reports included:
Eisenia fetida (Savigny, 1826) with head regeneration, in an anterior direction, possible at each intersegmental level back to and including 23/24, while tails were regenerated at any levels behind 20/21, i.e., two worms may grow from one.[19]
Lumbricus terrestris Linnaeus, 1758 replacing anterior segments from as far back as 13/14 and 16/17 but tail regeneration was never found.
Perionyx excavatus Perrier, 1872 readily regenerated lost parts of the body, in an anterior direction from as far back as 17/18, and in a posterior direction as far forward as 20/21.
Lampito mauritii Kinberg, 1867 with regeneration in anterior direction at all levels back to 25/26 and tail regeneration from 30/31; head regeneration was sometimes believed to be caused by internal amputation resulting from Sarcophaga sp. larval infestation.
Criodrilus lacuum Hoffmeister, 1845 also has prodigious regenerative capacity with ‘head’ regeneration from as far back as 40/41.[20]
An unidentified Tasmanian earthworm shown growing a second head has been reported.
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没有一个是我知道的
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