企鹅的成长过程
发布网友
发布时间：2022-06-28 06:35
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热心网友
时间：2022-06-30 22:03
生活史因种的体形大小不同以及地理分布而异。同一种内的繁殖周期还与纬度有关。有的种长途迁移到内陆的祖传营巢区去产卵，合恩角企鹅（S.demersus,即驴鸣企鹅）和小企鹅一年繁殖2次，大多数种一年仅繁殖1次。而王企鹅(A.patagonica)则三年内繁殖2次。王企鹅和帝企鹅每次产卵1枚，而其他种则产2枚，偶为3枚。大多数企鹅在南半球的春夏季繁殖。巴布亚企鹅(P.papua)的某些种群也在冬季繁殖。帝企鹅发育时间长，故在秋季开始繁殖，以使幼雏在成活率机会最大的夏季产出。 Life history as the size varies depending on the different and geographical distribution. The same within the breeding cycle is also concerned with the latitude. Some kind of long-distance migration into the interior of the ancestral nesting area to spawn, Cape Horn Penguin ( S.demersus, i.e. donkey called Penguin ) and little penguin breeding 2 times a year, most of a year only 1 breeding time. And the king penguin ( A.patagonica ) then in three years breed 2 times. King penguins and Gentoo penguins each spawning 1 pieces, and the other is to proce 2 pieces, I 3. Most penguins in the southern hemisphere spring summer breeding. The Penguins of Papua ( P.papua ) of some populations in the winter breeding. Emperor penguin development time is long, beginning in the autumn of reproction, so that the survival rate of young in the greatest chance of summer output.
成鸟每年更换全部羽毛一次。换羽时不能入水，通常躲在鸟群以外的一个掩蔽地点。企鹅游泳迅速，用鳍肢作为推进器。需高速前进时，常常跳离水面，每跳一次可在空中前进1公尺或者更远，并在此期间呼吸。在陆上则步态笨拙可笑，但前进速度甚快，以前肢为平衡器。可在岩石上灵活地行动，亦可在冰雪上以腹部著地滑行，以足及前肢为推进器。企鹅能藉太阳的位置来定向。 Alt birds each year to replace all the feathers once. Molting can not enter the water, often hiding in the birds outside of a masking locations. Penguin swimming rapidly, with flippers as propeller. To go forward at high speed, often jump out of the water, that each one may be in the air on 1 meters or more, and ring the period of breathing. The land is clumsy gait ridiculous, but the speed is very fast, with forelimbs for balancer. In rocks on flexibility in action, but also on the ice to abdomen with slide, to foot and forelimb for propeller. Penguin by the position of the sun to directional.
热心网友
时间：2022-06-30 22:03
