EB1A 关于cover letter# Immigration - 落地生根
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【 以下文字转载自 WaterWorld 讨论区 】
发信人: fololunsia (我心飞扬), 信区: WaterWorld
标 题: 太奇妙了：30黄蜂屠灭3万蜜蜂 VS 众蜜蜂合力闷死黄蜂。zz (转载)
发信站: BBS 未名空间站 (Wed Jan 18 02:21:43 2012, 美东)
发信人: windwater (欢迎到风水版), 信区: LosAngeles
标 题: 太奇妙了：30黄蜂屠灭3万蜜蜂 VS 众蜜蜂合力闷死黄蜂。zz
发信站: BBS 未名空间站 (Tue Jan 17 22:28:47 2012, 美东)
第一个视频：
http://www.youtube.com/watch?v=L54exo8JTUs&feature=player_embed
国家地理公布骇人影像：30黄蜂屠灭3万蜜蜂
《国家地理杂志》日前公布影片，呈现一场景象骇人的「巢城屠杀」：30只体型硕大的
日本黄蜂（Japanese hornet）大举入侵蜂巢，数以万计的蜜蜂奋力抵御仍命丧黄泉，
黄蜂最终攻破城池，恣意啃食蜂巢里的幼虫。
制作单位将黄蜂和3万只欧洲蜜蜂之间长达3小时的战役，浓缩成这段名为「地狱黄蜂」
（Hornets From Hell）的短片。《每日邮报》指出，由于两种蜂类一向没有接触，蜜
蜂面对这场突如其来的侵略，显得无力招架。
影片显示，日本黄蜂飞抵蜂巢后先攻击落单的蜜蜂，咬掉他们的头部、翅膀和足部，将
一团团「肉球」带回自己的巢穴喂养幼虫。随后，日本黄蜂展开摧枯拉朽般的攻击，平
均一分钟屠杀40只体型瘦小的蜜蜂。攻破城池后，日本黄蜂登上蜂巢，吸食鲜嫩多汁、
富含养分的蜜蜂幼虫。
科学家表示，这种名为「vespa velutina」的日本黄蜂，于2004年随着盆栽作物飘洋过
海来到法国，后来就在欧洲各地无情肆虐。日本黄蜂的运动能力相当优异，能以时速40
公里的速度持续飞行96.6公里。
根据《每日邮报》报道，日本黄蜂的体型是欧洲蜜蜂的4倍大，且其叮螫足以杀死蜜蜂
。此外，人类若遭日本黄蜂叮咬会导致肉体剧痛，患有过敏疾病的人更可能丧命。
++++++++++++++++++++++++++++
第二个视频：
http://www.youtube.com/watch?v=0EZtXNIT5QQ&feature=player_embed
同样的敌人, 同样的战斗---不同的结果
When an Asian giant hornet (Vespa mandarinia) scout locates and approaches a
Japanese honeybee hive it will emit specific pheromonal hunting signals.
When the honeybees detect these pheromones, about one hundred will gather
near the entrance of the nest and set up a trap, keeping it open apparently
to draw the hornet further into the hive or allow it to enter on its own.[4]
As the hornet enters the nest, a large ball (see image, on the left) of
about five hundred honeybees surround it, completely covering it and
preventing it from moving.[5] The bees in the ball begin quickly vibrating
their flight muscles, raising the internal temperature of the honeybee mass
to about 47 °C (117 °F).[5]
Japanese honey bees can tolerate temperatures up to 48 °C (118 °F), and
they can generate a temperature of 47 °C (117 °F). The hornet cannot
survive more than 46 °C (115 °F), resulting in its death.[4] The level of
carbon dioxide also rises within the bee sphere, hastening the hornet's
demise. Several bees may perish along with the intruder, but the death of
the hornet scout prevents it from summoning reinforcements which could wipe
out the colony.[6]
Beekeepers in Japan attempted to introduce the European honeybee in order to
increase honey productivity, but European bees lack the same defensive
behavior against the hornet as A. c. japonica and the colonies are rapidly
destroyed when discovered by the hornets.[4][7]
发信人: fololunsia (我心飞扬), 信区: WaterWorld
标 题: 太奇妙了：30黄蜂屠灭3万蜜蜂 VS 众蜜蜂合力闷死黄蜂。zz (转载)
发信站: BBS 未名空间站 (Wed Jan 18 02:21:43 2012, 美东)
发信人: windwater (欢迎到风水版), 信区: LosAngeles
标 题: 太奇妙了：30黄蜂屠灭3万蜜蜂 VS 众蜜蜂合力闷死黄蜂。zz
发信站: BBS 未名空间站 (Tue Jan 17 22:28:47 2012, 美东)
第一个视频：
http://www.youtube.com/watch?v=L54exo8JTUs&feature=player_embed
国家地理公布骇人影像：30黄蜂屠灭3万蜜蜂
《国家地理杂志》日前公布影片，呈现一场景象骇人的「巢城屠杀」：30只体型硕大的
日本黄蜂（Japanese hornet）大举入侵蜂巢，数以万计的蜜蜂奋力抵御仍命丧黄泉，
黄蜂最终攻破城池，恣意啃食蜂巢里的幼虫。
制作单位将黄蜂和3万只欧洲蜜蜂之间长达3小时的战役，浓缩成这段名为「地狱黄蜂」
（Hornets From Hell）的短片。《每日邮报》指出，由于两种蜂类一向没有接触，蜜
蜂面对这场突如其来的侵略，显得无力招架。
影片显示，日本黄蜂飞抵蜂巢后先攻击落单的蜜蜂，咬掉他们的头部、翅膀和足部，将
一团团「肉球」带回自己的巢穴喂养幼虫。随后，日本黄蜂展开摧枯拉朽般的攻击，平
均一分钟屠杀40只体型瘦小的蜜蜂。攻破城池后，日本黄蜂登上蜂巢，吸食鲜嫩多汁、
富含养分的蜜蜂幼虫。
科学家表示，这种名为「vespa velutina」的日本黄蜂，于2004年随着盆栽作物飘洋过
海来到法国，后来就在欧洲各地无情肆虐。日本黄蜂的运动能力相当优异，能以时速40
公里的速度持续飞行96.6公里。
根据《每日邮报》报道，日本黄蜂的体型是欧洲蜜蜂的4倍大，且其叮螫足以杀死蜜蜂
。此外，人类若遭日本黄蜂叮咬会导致肉体剧痛，患有过敏疾病的人更可能丧命。
++++++++++++++++++++++++++++
第二个视频：
http://www.youtube.com/watch?v=0EZtXNIT5QQ&feature=player_embed
同样的敌人, 同样的战斗---不同的结果
When an Asian giant hornet (Vespa mandarinia) scout locates and approaches a
Japanese honeybee hive it will emit specific pheromonal hunting signals.
When the honeybees detect these pheromones, about one hundred will gather
near the entrance of the nest and set up a trap, keeping it open apparently
to draw the hornet further into the hive or allow it to enter on its own.[4]
As the hornet enters the nest, a large ball (see image, on the left) of
about five hundred honeybees surround it, completely covering it and
preventing it from moving.[5] The bees in the ball begin quickly vibrating
their flight muscles, raising the internal temperature of the honeybee mass
to about 47 °C (117 °F).[5]
Japanese honey bees can tolerate temperatures up to 48 °C (118 °F), and
they can generate a temperature of 47 °C (117 °F). The hornet cannot
survive more than 46 °C (115 °F), resulting in its death.[4] The level of
carbon dioxide also rises within the bee sphere, hastening the hornet's
demise. Several bees may perish along with the intruder, but the death of
the hornet scout prevents it from summoning reinforcements which could wipe
out the colony.[6]
Beekeepers in Japan attempted to introduce the European honeybee in order to
increase honey productivity, but European bees lack the same defensive
behavior against the hornet as A. c. japonica and the colonies are rapidly
destroyed when discovered by the hornets.[4][7]
