Scientists May Have New Way to Save Whales: Examine Their Mouths


04 June, 2019

蜗蜗牛小游戏网 www.liandama.cn Whale researchers believe they have found a new way to help protect the animals from dying off.

The researchers say they can study the mouths of dead whales to identify how often they faced serious threats, such as being hit by a ship.

American Rosalind Rolland is the lead scientist on the project. She and her team are with the New England Aquarium in Boston, Massachusetts. They reported their findings in the online publication Marine Mammal Science.

Rolland and her team studied baleen, a substance found in the upper part of the mouth of some kinds of whale. She explains that the baleen records each time the animal's stress hormone increases. Scientists can then read these records, similar to reading the rings on a tree.

FILE - A humpback whale off the coast at Clovelly Beach in Sydney, Australia, June 19, 2016.
FILE - A humpback whale off the coast at Clovelly Beach in Sydney, Australia, June 19, 2016.

Understanding the information is important because whales who often feel stressed are less likely to reproduce and more likely to become sick. That combination is not good for the whale population, which is already dangerously low.

20 times greater than normal

The scientists did their work on a whale that had become trapped in fishing equipment. It was finally killed by Inuit hunters who found it trying to swim in the equipment. The hunters said the whale seemed to lack energy. When scientists examined the dead whale, they found its mouth showed an increase in stress hormones 20 times greater than normal.

Their research comes as fishermen, government officials, and wildlife activists struggle with how to protect sea animals. Some whale species are dying off because climate change has affected their supply of food. Others are victims of accidents. For example, some scientists estimate that fishing equipment kills up to 300,000 whales and dolphins each year.

Stress is not only for humans

Regina Asmutis-Silvia is a biologist with the Whale and Dolphin Conservation in Massachusetts. She was not involved in the research, but she says it is important.

The study shows that getting caught in fishing equipment does not just limit a whale's movements or ability to eat, she says. Getting caught also changes the body's ability to fight disease, have babies, and even grow.

"We clearly understand that stress is bad for humans," she notes. But, she says, we also need to understand that stress is bad for other animals, too.

I'm Kelly Jean Kelly.

Kelly Jean Kelly adapted this story from a report by the Associated Press. George Grow was the editor.

_______________________________________________________________

Words in This Story

online - n. done over the Internet

baleen - n. whalebone

stress hormone - n. a chemical the body produces in answer to strong feelings of stress, worry or anxiety

species - n. a group of animals or plants that are similar and can produce young animals or plants

游戏秘籍 | 广州代孕 | 美国代孕网站 | 高鹰代孕 |
  • 履职日记|苏华:尽快完善“职教高考”考试招生办法_劲舞团经验表
  • 河北省委书记、省长一周动态(9月10日_笔记本什么配置好
  • 貴州省人民政府原副省長蒲波受賄案一審開绿茶有哪些种类
  • 吴晓灵:消灭风险最好的办法是允许金融机构破产_系统流
  • 东方网—上海这所学校通过多种方式“玩转”数学_lolhezi
  • 苏州环保立查立改 污水处理厂异味扰民问题得到整改_三网合一是什么意思
  • 鄂尔多斯市街道社区“一核心三融合”党建工作机制 构建城市基层社会治理新格局_佩嘉
  • Apple Watch春季表带正式更新 多彩清新配色出街必备_伽马射线爆
  • 春节移动数据流量消费增长翻倍_茶叶水洗脸
  • JTB、日之丸与京阪巴士成立新公司运营双层环游观光巴士_鲨鱼韩剧
  • 南宁警方“互联网+警务”打造指尖上的公安局_数码宝贝tri第6章
  • 高分五号、高分六号卫星正式投入使用_女王牌
  • 中航地产上半年营收27亿元 地产业务亏损2859万_开壶
  • 小学生谎称挨揍,家长暴打班主任_乐山大佛简介
  • 宁夏内蒙古首条天然气长输管道贯通_宁夏滑水麻将