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shelvy

木虫 (著名写手)

[求助] pregnathostomal的中文意思

pregnathostomal的中文意思
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hgh99618

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【答案】应助回帖


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zhtear99: 金币+1, 感谢热心应助,小红包一枚~欢迎常来~~ 2013-01-07 14:02:15
请把这个单词的出处写出来。最好把该单词所在的那一段全文写出来。
2楼2013-01-07 00:43:38
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MajorMei

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【答案】应助回帖

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zhtear99: 金币+5, 感谢热心应助,答复的很仔细认真呢~BB奖励下,欢迎常来~~ 2013-01-07 09:40:06
shelvy: 金币+5, ★★★★★最佳答案 2013-01-07 12:33:51
此单词可以从有颔下门(Gnathostomata)转化而来
gnathostome-gnathostomal-pregnathostomal

gnathostome: jawed vertebrate

http://www.sciencedirect.com/sci ... /S0024408296900436:
The stages in the evolution of gnathostomes, driven by selection for increasing activity, are modelled as: ancestral vertebrate (with unjointed branchial arches) to early pre-gnathostome (jointed internal arches and stronger ventilation) to late pre-gnathostome (with mouth-closing, ventilatory ‘jaws’) to early gnathostome (feeding jaws).

pre-gnathostome到gnathostome的演化阶段:
Four basic stages in evolution of jaws from branchial arches
a. Ancestral vertebrate: unjointed branchial arches
b. Early pre-gnathostome: jointed internal arches support stronger ventilation muscles; gives stronger inspiration and expiration
c. Late pre-gnathostome: mouth-closing, ‘ventilatory’ jaw permits more forceful expiration of water across gills
d. Early gnathostome: feeding jaws

我认为pre-gnathostome可以理解为:有颔脊柱类演化过程中的的前期
具体分为前期和后期,主要特点是动物的呼吸功能增强
pregnathostomal则代表此时期的,有此时期特征的
3楼2013-01-07 06:37:51
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