| 姚思聪,樊明宁,唐文乔,张亚,王磊,朱国利,李盈盈,董文霞,于晓,赵振官.2014.长江河口区江豚种群调查.动物学杂志,49(2):145-153. |
| 长江河口区江豚种群调查 |
| Survey and Population Size of Finless Porpoise (Neophocaena asiaeorientalis) in the Estuary of Yangtze River |
| 投稿时间：2013-07-12 修订日期：2014-03-19 |
| DOI： |
| 中文关键词: 长江河口 江豚 遗骸搜寻 活体调查 种群数量 |
| 英文关键词:The Estuary of Yangtze River Finless porpoise (Neophocaena asiaeorientalis) Search for remains Surveys Abundance |
| 基金项目:2012年渔业种质资源保护项目(316豚类保护行动), 上海高校知识服务平台《上海海洋大学水产动物遗传育种中心》 |
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| 中文摘要: |
| 为弄清长江河口区江豚(Neophocaena asiaeorientalis)种群数量和分布情况, 于2012年6月8~11日和2012年9月12~19日对这一水域作了2次较大覆盖面的目视考察和9次遗骸搜寻。6月的考察目击到江豚5 群8 头, 9月的考察未目击江豚个体。依据样带法估算, 长江河口水域6月份的江豚种群数量约为61 头。全年共获得7 头江豚遗骸, 并搜集到其他5 例死亡信息。对其中5 头外表完整、特征保留良好的遗骸所作的鉴定结果显示, 2头为长江亚种(N. asiaeorientalis asiaeorientalis), 3头为东亚亚种(N. asiaeorientalis sunameri)。调查表明, 崇明岛西端和青草沙附近水域是长江亚种活动的热点水域, 可作为重点监护区域。 |
| 英文摘要: |
| To clarify the population size and regional distribution of finless porpoise (Neophocaena asiaeorientalis) in the estuary of Yangtze River, two surveys were performed in the water surface of 23884km2 in size from June 8th to 11th and September 12th to 19th in 2012 respectively. Eight porpoises in five groups were witnessed in June while no animal was found in September. According to the estimation based on transect of 805km in length, 61 individuals were estimated in June. In addition seven remains and five dead records of the porpoises were collected From the riverside of the Yangtze River in the entire year 2012. Two Yangtze finless porpoises(N. asiaeorientalis asiaeorientalis) and three East Asian finless porpoises (N. asiaeorientalis sunameri) were identified based on the external characteristics of remains which were relatively intact. The results suggest that the water areas west to Chongming Island and northwest to Changxing Island might be the core distribution regions of Yangtze finless porpoise in the estuary area. |
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