未来水环境让现有鱼类很难生存(有声)
Fish raised in the more acidic seawater that would result from higher carbon dioxide levels forget to flee predators 1.
More carbon dioxide emissions 2 lead to more CO2 dissolving in the oceans, which turns the water acidic. Those sour seas slow the growth of corals. And it turns out acidic seawater also makes clownfish and damselfish suicidally bold and reckless, according to a study in the Proceedings 3 of the National Academy of Sciences.
Researchers used IPCC estimates of future CO2 emissions to mix up seawater with varying degrees of acidity 4, similar to what we might see in 50 to 100 years. Fish larvae 5 raised on the most acidic batch 6 of seawater instinctively 7 avoided predators at first, but soon were actually attracted to the predator's scent—probably due to some impairment of the olfactory 8 system.
When those same fish were placed in experimental reefs near the Great Barrier Reef, they disregarded safety, straying from the protective coral. And cruising predators snatched up nearly all of them within 30 hours. Over the same period, only 10 percent of the fish raised in seawater of today’s acidity were eaten.
A disruption as big as climate change is bound to challenge numerous species. This study suggests that some challenges will be as unexpected as a cunning predator
- birds and their earthbound predators 鸟和地面上捕食它们的动物
- The eyes of predators are highly sensitive to the slightest movement. 捕食性动物的眼睛能感觉到最细小的动静。 来自《简明英汉词典》
- Most scientists accept that climate change is linked to carbon emissions. 大多数科学家都相信气候变化与排放的含碳气体有关。
- Dangerous emissions radiate from plutonium. 危险的辐射物从钚放散出来。
- He was released on bail pending committal proceedings. 他交保获释正在候审。
- to initiate legal proceedings against sb 对某人提起诉讼
- This plant prefers alkaline soil,though it will readily tolerate some acidity.这种植物在酸性土壤中也能生存，但硷性土壤更加适宜。
- Gastric acidity would not prevent the organism from passing into the gut.胃的酸度不能防止细菌进入肠道。
- Larvae are parasitic on sheep.幼虫寄生在绵羊的身上。
- The larvae prey upon small aphids.这种幼虫以小蚜虫为食。
- The first batch of cakes was burnt.第一炉蛋糕烤焦了。
- I have a batch of letters to answer.我有一批信要回复。
- As he leaned towards her she instinctively recoiled. 他向她靠近，她本能地往后缩。 来自《简明英汉词典》
- He knew instinctively where he would find her. 他本能地知道在哪儿能找到她。 来自《简明英汉词典》