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一 | New Delhi, Oct 20 (UNI) India recorded 2,141 new Covid-19 cases, taking the total active cases to 25,510 as per the Health Ministry data on Thursday.
As many as 7 fresh fatalities were reported, taking the toll to 5,28,943.
A total of 2,579 patients recovered, taking total recoveries to 4,40,82,064 while the case fatality rate was recorded at 1.19 per cent.
The active cases comprise 0.06 per cent of the total infections, whereas the national Covid-19 recovery rate stands at 98.76 per cent.
According to the bulletin, 89.91 crore tests for Covid-19 have been done so far. In the last 24 hours, a total of 2,51,515 tests have been conducted.
"India has administered 219.46 crore (94.98 crore second dose and 21.96 crore precaution dose) of Covid-19 vaccine, so far under the ongoing nationwide vaccination drive," Ministry data said.
UNI JA PRT。 在周二的一份声明中,《Mammalia》出版商De Gruyter称这只猞猁是一个“独特的发现”,并说这是第一次拍摄到黑色加拿大猞猁的照片。这只加拿大猞猁是黑色的,这意味着它的毛发中有更多的黑色色素,使它具有不寻常的颜色。在视频中,可以听到一只警戒的狗在喧闹。人们看到这只猞猁坐在住宅区一些台阶附近的草地上,似乎并不关心,最后走开了。加拿大猞猁通常在冬季有灰色的毛发,在夏季有棕色的毛发,变化是罕见的。

二 | 这段视频是在大约164英尺(50米)远的地方拍摄的,但Jung和研究这段视频的专家能够确定这只猞猁的脸部周围有一些白色的灰毛。对于哺乳动物的极端颜色变化,科学家们喜欢问的一个问题是,该特征是否可能帮助动物(适应性强)或阻碍动物(适应性差)。

三 | 就这只黑色加拿大猞猁而言,当这种生物试图在雪地上偷袭晚餐时,它可能会带来挑战。

四 | 论文指出:“猞猁黑色的适应性意义尚不清楚,但在冬季捕猎时失去伪装可能是不适应的。
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