"The animals also do not have the genes for plant-digesting enzymes in their own genome. This combined scenario may have increased their risk for extinction."
“大熊猫自身的基因组里还没有植物消化酶的基因。这些综合情况也许会加剧它们灭绝的危机。
Study co-author Doctor Xiaoyan Pang, an associate professor in the School of Life Sciences and Biotechnology at Shanghai Jiao Tong University, said: "This result is unexpected and quite interesting, because it implies the giant panda's gut microbiota may not have well adapted to its unique diet, and places pandas at an evolutionary dilemma."
这项研究的共同作者、上海交通大学生命科学与技术学院的副教授庞小燕博士指出:“这一研究结果出人意料,而且十分有趣。因为这表明大熊猫的肠道细菌也许没能很好地适应大熊猫特殊的饮食,并让大熊猫陷入进化的困境。
The researchers said that giant pandas evolved from bears that ate both plants and meat, and started eating bamboo exclusively about two million years ago.
研究人员们称,大熊猫从杂食性熊进化而来,并在大约两百万年前开始专吃竹子。
The animals spend up to 14 hours daily consuming up to 12.5 kilos (27.5 pounds) of bamboo leaves and stems, but can digest only about 17 per cent of it; their faeces is mainly composed of undigested bamboo fragments.
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