蛇岛蝮蛇的选择与适应

蛇岛蝮蛇 (GloydiusshedaoensisZhao)之所以在一个孤岛上繁衍生息上万年间 ,首先是蝮属蛇类都具有捕食鸟类的精良武器———毒牙与颊窝 ,捕食时能选择有利地形并采取拟态伪装和“守株待鸟”的对策 ,当食物淡季来到时便以“夏眠”的方式渡过炎热的夏季 ,以减少能量消耗 .蛇岛蝮蛇的食物很有限 ,捕食季节也很短 ,可它的能量转化率很高 ,并能将剩余的能量以脂肪的形式储存在体内 .它们还有很强的耐饥力和耐渴力 ,即使错过了一个捕食期 ,只要在下一个捕食季节获得一定的食物就足够了 .在种群生殖上它们选择了降低生殖数量、提高生殖质量的策略 ,刚出生的小蛇就能捕食小鸟 ,使之长期保持一个健康的种群 ,这就是自然选择与适应的结果

Choice and adaptation of Golydius shedaoensis Zhao

Why Gloydius shedaoensis Zhao multiply and live at one isolaed island for ten thousand years,and how did they suit?It is that they all have a superior weapon which pray on birds at first-poison fang and cheek nest,they can choose favorable terrain and adopt mimicry disguise countermeasure in "observe and wait for birds when praying on",and they spend hot summer by way of "aestivation"when the food comes in a duall season,in order to reduce the energy consumption.The food of Gloydius shedaoensis Zhao is very limited,prays on season is very short too,but its energy conversion ratio is very high,abling to store in body in the form of fat remaining energy.They are able to bear hungry strength and able to bear thirsty strength very strong,no matter in missing one pray-on season,so long as it is enough to pray on season and get certain food the next one.They choose to decrease the quantity of reproduction and improve the quality of reproduction at opulation reproduction,little snake that just born may pray on the birds,make them keeping a healthy population for a long time.