"/>

国产丝袜在线精品丝袜|在线A毛片免费视频观|日韩精品久久久一区二区|亚洲成在人网站天堂直播|99在线精品66视频无码|亚洲欧美不卡视频在线播放|国产精品久久久久久免费一级|久久精品国产亚洲AV香蕉软件

        1. <i id="avp7g"><ins id="avp7g"></ins></i>
          <td id="avp7g"><tr id="avp7g"></tr></td>
        2. <small id="avp7g"><dl id="avp7g"><small id="avp7g"></small></dl></small>
        3. <track id="avp7g"><dl id="avp7g"><delect id="avp7g"></delect></dl></track>

          <source id="avp7g"><ins id="avp7g"></ins></source>
        4. <p id="avp7g"><pre id="avp7g"></pre></p>
          <td id="avp7g"><tr id="avp7g"></tr></td>
        5. Rare Australian dolphin at risk of extinction: study
          Source: Xinhua   2018-03-14 10:37:44

          CANBERRA, March 14 (Xinhua) -- The rare Australian humpback dolphin needs urgent protection to be saved from extinction, an Australian study released on Wednesday said.

          In the study, researchers from Flinders University discovered new information about the population genetics of the Sousa sahulensis, commonly known as the humpback dolphin.

          The study concluded that the deaths of even a few mature individuals per year could be detrimental for the viability of humpback dolphin populations.

          "Our results show that Australian humpback dolphin populations along the east coast of Queensland are characterized by low levels of genetic diversity, limited gene flow, and small effective population size," lead author Guido Parra said in a media release on Wednesday.

          "Conservation efforts should focus on promoting connectivity among local populations and reducing direct causes of human related mortality."

          Scientists studied the Australian humpback dolphin, which is endemic to northern Australia and southern New Guinea, for 17 years before coming to the conclusion that it was a separate species within the Sousa family.

          They are considered vulnerable by the International Union for Conservation of Nature Red List of threatened species.

          Due to the small population of the dolphin, Parra and a team of researchers spent 10 years collecting genetic samples.

          Co-author Daniele Cagnazzi said the results should "raise important conservation concerns and emphasise the vulnerability of this species to random natural and human disturbances."

          "Understanding the population genetics of threatened species is imperative for the development of appropriate conservation measures because some may be more vulnerable to natural and human disturbances than others depending on their genetic diversity and past demographic history," Cagnazzi said.

          Editor: Lifang
          Related News
          Xinhuanet

          Rare Australian dolphin at risk of extinction: study

          Source: Xinhua 2018-03-14 10:37:44
          [Editor: huaxia]

          CANBERRA, March 14 (Xinhua) -- The rare Australian humpback dolphin needs urgent protection to be saved from extinction, an Australian study released on Wednesday said.

          In the study, researchers from Flinders University discovered new information about the population genetics of the Sousa sahulensis, commonly known as the humpback dolphin.

          The study concluded that the deaths of even a few mature individuals per year could be detrimental for the viability of humpback dolphin populations.

          "Our results show that Australian humpback dolphin populations along the east coast of Queensland are characterized by low levels of genetic diversity, limited gene flow, and small effective population size," lead author Guido Parra said in a media release on Wednesday.

          "Conservation efforts should focus on promoting connectivity among local populations and reducing direct causes of human related mortality."

          Scientists studied the Australian humpback dolphin, which is endemic to northern Australia and southern New Guinea, for 17 years before coming to the conclusion that it was a separate species within the Sousa family.

          They are considered vulnerable by the International Union for Conservation of Nature Red List of threatened species.

          Due to the small population of the dolphin, Parra and a team of researchers spent 10 years collecting genetic samples.

          Co-author Daniele Cagnazzi said the results should "raise important conservation concerns and emphasise the vulnerability of this species to random natural and human disturbances."

          "Understanding the population genetics of threatened species is imperative for the development of appropriate conservation measures because some may be more vulnerable to natural and human disturbances than others depending on their genetic diversity and past demographic history," Cagnazzi said.

          [Editor: huaxia]
          010020070750000000000000011100001370380421
          福建省| 苏州市| 巨鹿县| 化隆| 城市| 安平县| 关岭| 遂溪县| 贵德县| 大庆市| 堆龙德庆县| 开原市| 常德市| 芷江| 德兴市| 水城县| 濮阳县| 南召县| 松原市| 大方县| 吴川市| 西峡县| 都兰县| 牟定县| 清水县| 罗城| 辽宁省| 清远市| 道孚县| 盐城市| 定远县| 阿拉善右旗| 阿坝| 阿坝县| 石景山区| 永登县| 克什克腾旗| 庆云县| 九江县| 开鲁县| 普格县|