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与狼相比,羊似乎是弱者;但是,自有狼以来,羊从来也没有在这个地球上消失,仍旧在生生不息地繁衍着,并且物种得到了不断的进化。从这个角度讲,羊又是赢家———选对了自己的生态位:植食、群居、跑得更快。 “生态位”就是在大自然中,亲缘关系接近的,具有同样生活习惯或生活方式的物种,不会在同一地方出现。如果它们在同一区域内出现,大自然将会用空间把它们各自隔开,如虎在山上行,鱼在水中游,猴在树上跳,鸟在天上飞;如果它们在同一地方出现,它们必定利用不同的食物生存,如虎吃肉,羊吃草,蛙吃虫;如果它们需要的是同一种食物,那么,它们的觅食时间必定要相互错开,如狮子是白天出来寻食,老虎是傍晚出来寻食,狼是深夜出来寻食……在动物世界里没有两种物种的生态位是完全相同的,有些物种亲缘关系接近或相似而使生态位部分重叠,这时就会出现残酷的竞争,如一山不能容二虎。如果强者进入弱者的生态领域就会出现龙陷浅滩受虾戏,虎入平川遭犬欺的状况;如果弱者进入强者的生态领域中,就会出现大鱼吃小鱼、小鱼吃虾的状况。因此,强者只能在自己的生态位上是强者,弱者也只能在自己的生态位上才能自由生存。
Sheep seems to be the weaker compared to wolves; however, since the wolves sheep have never disappeared on this earth, they are still alive and thrive, and the species is constantly evolving. From this perspective, the sheep are the winners --- choose their own niche: plant food, live in groups, run faster. “Niche” is a species in nature that is closely related to one another and has the same lifestyle or way of life, and does not appear in the same place. If they appear in the same area, nature will separate them with space, such as a tiger walking in the mountains, a swim in the water, a monkey jumping in a tree, a bird flying in the sky; if they are in the same place, they must Use different food to survive, such as tiger eat meat, sheep graze, frog eat insects; if they need is the same food, then, their feeding time must be staggered with each other, such as the lion is looking for food during the day, the tiger is evening Come out to look for food, wolves come out late at night looking for food ... No two species in the animal world niche is exactly the same, some species close to or similar genetic proximity of niche overlap, then there will be brutal competition , Such as a mountain can not accommodate two tigers. If the strong into the ecological areas of the weak there will be dragons shoal shrimp play by the tiger into the Hirakawa was bullied situation; if the weak into the ecological areas of strong, there will be big fish to eat fish, fish eat shrimp The situation. Therefore, the strong only in their own niche is strong, the weak can only be in their own niche to survive freely.