[新聞] 拒「只爽一次」就沒命 公蜘蛛改吃幼齒避淪黑寡婦點心已回收
新聞標題:拒「只爽一次」就沒命 公蜘蛛改吃幼齒避淪黑寡婦點心
新聞內容:
說到「黑寡婦」蜘蛛,大家都會聯想到公蜘蛛在交配後,會被母蜘蛛吃下肚,成為
牠們的點心,不少人都為公蜘蛛的處境十分同情。但現在有科學家研究發現,公蜘
蛛似乎找到了「保命」的策略,那就是找未成年的母蜘蛛交配,在牠們身上留下精
子來產下後代。
根據《科學雜誌》(Science Magazine)、《國家地理》(National Geographic)
和《今日美國》(USA Today)等多家媒體報導,有學者研究澳洲的紅背蜘蛛和褐蜘
蛛,無論是在實驗室或是在野外,公蜘蛛在風流之後避免一命嗚呼,現在開始懂得
找「未成年」的母蜘蛛交配。
公蜘蛛一生僅有一次的交配機會,為了避免「只爽一次」就一命嗚呼,現在牠們專
找未成年的母蜘蛛,穿透牠們尚無外部生殖器來授精,將精液穿透未成年母蜘蛛的
體內,這些母蜘蛛會將精液保留,等到成熟後再繁衍後代。
研究團隊發現,現在這公蜘蛛至少有超過1次的交配機會,這也能提生牠們繁衍後代
成功的機率。研究人員提到,不少母蜘蛛因為交配太多次,造成先前遺留的精子會
被後來的取代,導致這些公蜘蛛的「遺腹子」都保不住。
新聞連結:
http://www.ettoday.net/news/20160922/779451.htm#ixzz4KwN8TUHq
心得:
因為母蛛太兇殘,公蛛怕怕,於是向下發展,專找未成年的
成年的母蛛找不到公蛛交配,只能在夜裡哭哭
然後在網上抱怨說怎麼都找不到好的對象
這個套路跟某種生物的發展方向好像有幾分相似
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