crown-of-thorns starfish populations托福阅读内容如下: Crown of Thorns Starfish and Coral Reefs The crown of thorns starfish, Acanthaster Tlanci, is large, twenty-five to thirty-five centimeters in diameter, and has seven to twenty-one arms that are covered in spines. It feeds primarily on cor...
事实上,对埋在海底的珊瑚礁化石的分析表明,该物种已经吞噬大堡礁珊瑚至少8000年了。更有争议的是,一些科学家认为这项研究为古代疫情的爆发提供了证据。如果这种解释是正确的,将支持这样一种观点,即可能由厄尔尼诺现象或温度、盐度和浮游生物水平波动引起的周期性疫情是正常的。此外,生态学家普遍认为,能够在短时间内...
A. planci, commonly known as the crown-the-of- starfish, is large sea star that lives in tropical zones of the Red Sea, the Indian Ocean, and the Pacific Ocean. Covered with long. sharp spines that contain a neurotoxin that causes a stinging sensation in its prey, A. planci feeds on ...
Crown-of-thorns Starfish Populations A. planci, commonly known as the crown-the-of- starfish, is large sea star that lives in tropical zones of the Red Sea, the Indian Ocean, and the Pacific Ocean. Covered with long. sharp spines that contain a neurotoxin that causes a stinging sensation ...
than on its predators or competitors. Alternatively, nitrogen and other nutrients may be boosting the plankton upon which starfish larvae feed. But this theory also has its weak points. Why, for instance, is the crown-of-thorns starfish the only reef resident experiencing such dramatic outbreaks?
英文名:Crown-of-thorns starfish 学名:Acanthaster planci(Linnaeus, 1758) 棘冠海星,又名魔鬼海星。常见六腕或八腕,其表层上有棘刺。生活在浅海等有珊瑚礁的水域。主要食物为珊瑚,偶尔有时会以甲壳类或海参为食。毒棘有毒胞,是神经毒素。常有潜水夫或是浮潜客,甚至是渔民不慎碰到而中毒。同大部分的棘皮动物...
The meaning of CROWN OF THORNS is a starfish (Acanthaster planci) of the Pacific region that is covered with long spines and feeds on coral polyps sometimes causing destruction of coral reefs —called also crown-of-thorns starfish.
population dynamicsIncreasingly frequent and intense disturbances of many kinds are reducing the populations of habitat‐forming species. For example, disturbances, including coral bleaching, storms and cyclones, coral disease and Crown‐of‐Thorns starfish (CoTS) outbreaks, have beenimportant contributors ...
1. According to paragraph 1 all of the following statements about crown of thorns starfish are true EXCEPT O Crown of thorns starfish usually have several arms covered in spines. O Crown of thorns starfish's main food is coral. O Crown of thorns starfish normally live in high population dens...
1. According to paragraph 1 all of the following statements about crown of thorns starfish are true EXCEPT O Crown of thorns starfish usually have several arms covered in spines. O Crown of thorns starfish's main food is coral. O Crown of thorns starfish normally live in high population dens...