[原创]自编的JJ中的蝌蚪文：Tadpole - Predator (根据saint200909 同学的PDF材料)

cypolo

=== 首先，要感谢 saint200909 同学搜索来的PDF格式原文材料 ===

由于考虑到其中有不少生词（至少对于我来说是的-_-!）可能很多朋友阅读起来不是那么爽，要来回查单词；

我把文件内容（仅Abstract部分）放到这里，以供大家直接用金山词霸页面取词阅读；

个人已经看过了abstract部分，觉得非常有借鉴价值！

当然，这是篇立论文，不是驳论文，所以全篇都是在介绍这个试验，没有GMAC在里面正反观点地瞎搅和…
  

~大家全当是背景材料阅读下~

把 abstract 部分 模仿真实考试时的每行长度分好了（但还是密密麻麻，又长又烦），也不知道字体大小每个人感觉如何？

觉得不好的话自己复制到Word里面重新编辑吧:-D （同时附上saint200909 同学提供的PDF原始文件）

========  本人后天，上海下午场 ~~~ 积攒个RP~~~  =========

·

In a field survey the distribution of

pond-breeding anuran species and their potential

large predators was investigated along a freshwater

habitat gradient, ranging from ephemeral pools

to permanent ponds. In a laboratory experiment

predator-induced plasticity was examined for all

tadpole species to test whether the plastic

response of ephemeral and temporary pond species

differs from that of permanent pond species.

Desiccation and predation pose conflicting demands;

reduced activity lowers the risk of death by

predation but increases the risk of death by

desiccation. It was expected that species from

time-constrained habitats would display a morphotype

that would reduce vulnerability to invertebrate

predators, thus allowing these species to

maintain a high level of activity, whereas species

from permanent ponds would avoid predation

both morphologically and behaviourally. Species

distribution and predator composition along the

hydroperiod gradient differed. Variations between

ephemeral and temporary ponds can be

attributed to hydroperiod differences and the

presence of large invertebrate predators in temporary

ponds, whereas the contrasts between

temporary and permanent ponds can only be

attributed to the hydroperiod, since the presence

and abundance of top predators are similar in both

habitat types. With the exception of bufonids, all

species showed predator-induced plasticity in

agreement with previous studies. Tadpole species

differed in the integration of the phenotypic traits

measured, but differences observed between

species could not be attributed only to habitat.

Species from temporary habitats showed an

expected response, with a low reduction of activity

in comparison with the rest of the species. The lack

of general patterns in the morphological changes

suggests that species within the same habitat type

did not converge on similar phenotypes, perhaps

due to functional constraints on differences in

microhabitat use in the water column.

·

======= 再次感谢saint200909 同学的热心搜索！=======

[此贴子已经被作者于2008-12-22 19:45:37编辑过]

flutemama

THX

camillechow

我也后天``HK下午场~

sausau

祝大家都好运