森林象的捕食方法 急!

2010-10-02 12:55 am
森林象是怎麼捕食的?

回答 (1)

2010-10-02 1:17 am
✔ 最佳答案
非洲森林象(學名:Loxodonta cyclotis)又稱圓耳象,主要分佈於非洲剛果盆地一帶。

從前,非洲森林象被視為普通非洲象(學名:Loxodonta africana)的亞種,但透過基因分析之後,被認為可能是一支獨立物種。

然而,自然保護聯盟(IUCN)的非洲象專家小組認為,現有的證據還不能判定這是兩個不同的物種,因此未予評估本種的保護狀況非洲森林象與普通非洲象之間的特徵有不少差異。

非洲森林象的下顎骨是長而窄(普通非洲象是短而寬),森林象的耳朵較圓(普通非洲象的較突出),以及本種的象牙是筆直且向下長。非洲森林象通常是以樹葉、果實和樹皮為食,偶爾會舔礦物鹽。


非洲森林象以2~8頭為一群,並生存於中、西部非洲內水氣充足的雨林,尤其是剛果盆地一帶。

由於象牙的需求量增加,從20世紀90年代起,非洲森林象因為偷獵而造成數量銳減。二十世紀後期,保育人員透過DNA鑑定技術來追查象牙來源,因而得知,森林象的象牙較大,且帶有粉紅色色彩。

2010-10-01 17:18:01 補充:
An elephant family is ruled by a matriarch (older female), and generally consist of her female offspring and their young . In Africa, a basic family unit consists of six to twelve animals, but families of twelve to twenty elephants are quite common

2010-10-01 17:18:20 補充:
An elephant family will split depending on the size of the family, the amount of available food, and how well they are getting along. When the matriarch dies, one of the oldest offspring takes her place.

2010-10-01 17:18:29 補充:
The mating patterns of elephants offer us key insights into family structures and life cycle behaviours. Mating patterns are unique since elephants do not confine mating to a specific time of year.

2010-10-01 17:18:38 補充:
The situation which develops involves the bull pursuing the cow until she is ready for mounting. When the bull elephant desires sexual activity, he approaches the matriarch-led herd.

2010-10-01 17:19:09 補充:
Once the bull finishes his business he joins the bachelor herd or leaves on his own. It is this male-leaving behaviour that highlights the matriarch elephant family.An elephant family is led by a matriarch, with the matriarch being the oldest and most experienced of the herd.

2010-10-01 17:19:34 補充:
The matriarchal society consists of her female offspring and their young. In some cases it may include one of the matriarch's sisters and her offspring as well.

2010-10-01 17:19:41 補充:
It is this close contact and relationship allows the rest of the elephant to acquire knowledge to be used when needed.A basic African family unit contains six to twelve members.


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