Despite being set up on a romantic date by zookeepers, a pair of Chinese pandas at Edinburgh Zoo failed to mate, the zoo said on Thursday.
"Tian Tian (meaning Sweetie) and Yang Guang (sunshine) will not have babies this year because they didn't mate," Edinburgh Zoo's press officer told China Daily.
The panda breeding season for 2012 has ended, and both pandas are back on display, the press officer said.
The latest attempt to mate followed other attempts on Tuesday and Wednesday. Tian Tian and Yang Guang showed signs of chemistry and interest in each other, and wrestled a lot, but that was it.
Zookeepers had hoped to put the two pandas together for one last attempt on Thursday morning, but the hormone levels of Tian Tian, the female panda, were too low, and limited breeding behavior was observed in both pandas.
Female pandas ovulate just once a year and have only a 36-hour window in which they can get pregnant.
Based on a combination of hormone-testing and behavioral observation over several weeks, experts decided that the time was right for the pair to properly meet for the first time on Tuesday.
The zoo's "panda cams", which allow people to watch the animals online, were turned off so Tian Tian and Yang Guang could have their dates in private.
"Each time the pair met we saw a huge amount of eagerness and attraction between Tian Tian and Yang Guang. There was lots of vocalization and encouragement from our female and physical contact between the two," Iain Valentine, director of research and conservation at the zoo, said in a press release.
"He mounted her several times. However, full mating did not occur. Although both have bred before and have borne cubs with other pandas, they are both still relatively inexperienced," Valentine added.
"We are hugely encouraged by how much the natural sparks flew between the two animals. As with humans, not all male and female pandas are attracted to each other. Both were keen to mate, but their inexperience showed," Valentine said.
浅谈英语新四级考试的听力部分
12月大学英语四级考试听力的最后七天冲刺突破法
怎样在20天内搞定英语新四级听力
四级听力的中句型
大学英语四级短文听力提问方式及解题对策
最后7天英语四级听力攻略留意命题的规律
2007年大学英语四级考试听力相关考前辅导汇总
大学四级短文听力提问方式和解题对策
四级复合式听写的应对策略
如何在四级考试中拿到更多占总分35%听力分数
2007年英语四级预测试卷标准听力二section C
大学英语四级听力的应对策略
大学英语四级考试强化班关于听力理解
12月英语四级考试听力模拟试题十三
新四级考试样题的听力部分浅析
四级提问方式及解题对策
大学英语四级考试听力备考之失爆和连读
四级考前内部串讲讲义的听力部分
2013年12月大学英语四级考试听力篇章部分的点睛
大学英语四级全真模拟题听力自测音频
英语四级口语复习应参考地道美国口语
新四级长对话与短文技巧
四级听力突破技巧目前应该多做复合式听写
英语四级听力训练的办法
2013年12月最后冲刺英语新四级听力的应对策略
怎么应对四级考试之听力
12月英语四级考试听力模拟试题十四
大学英语四级考试听力快速提高的必备技巧
名师点津新大学英语四级考试听力的应对策略
英语四级对话式的听力分析
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |