逆さづりのほうがサイの健康に良いから
サイは同じ場所に集まると自然繁殖が鈍る
なので適度に集団をバラさないと個体数が増えない
そこで個体数を増やすため計画的にサイを移動させる必要がある
逆さづりのサイが上空を飛ぶ姿は見たものを笑わせます
一見するとサイに恐怖心を与える虐待にも見えますがこちらの方がサイは喜ぶそうです
サイの一般的な移動方法ははトラックです
しかし場所によっては陸路では難しい場所もある
そこで10年前からヘリコプターを使い移動する手段が用いられるようになりました
以前は横向きに担架に乗せる方法でした
しかしこの方法だとサイの呼吸が圧迫され血中酸素濃度が低くなってしまう
そこで逆さづりにしたところ全く影響がないことが判明した
しかも４本の足にロープを取り付ける作業は数分ですむ
この保護活動の結果アフリカ全土で90年代半ばの時点で２３５４頭に減ったクロサイは個体数は
順調に増え今では約５６００頭に回復している
The right direction is the wrong direction
Namibia is home to nearly a third of African black rhinoceros.The black rhinoceros are one of two species of rhinoceros that live on the African continent.
Since 2015, Cornell University’s research team has been experimenting with 12 black rhinoceros weighing about 800 to 1230 kilograms upside down with cranes and having them take a sideways posture for comparison.
In addition, biological indicators related to breathing and ventilation (gas exchange in the lungs) were measured, and it was found that rhinoceros had higher blood oxygen concentration when they were upside down.
Radcliffe points out that an upside-down posture helps open the airway by extending the spine.In addition, it has been revealed that the amount of air that does not contribute to oxygen supply to the body increases in a horizontal posture.
The difference between the two postures is minimal, but the powerful anesthetic used in rhinoceros causes hypoxemia, so even a slight improvement can make a difference in health.
an airlift of rhinoceros
Whether sideways or upside down, Psy’s airlift will require two small helicopters to shoot sedatives with arrows and two large helicopters for transportation.In the case of lying down, the weight of the stretcher is added to it, and the time required is increased.Radcliffe said it would take up to 30 minutes for a team of six to secure the rhinoceros on a stretcher.
By contrast, it takes only a few minutes to attach a rope to a rhinoceros foot.
