摘要
The species composition of Arctic zooplankton differs greatly from that of the zooplankton of the North Pacific and Bering Sea. Particularly with greater warming from sea-ice retreat, the reproduction of North Pacific species transported into the Chukchi Sea and beyond may lead to changes in the Arctic pelagic ecosystem. We report the egg production and hatching of the Pacific copepod Neocalanus flemingeri in the Chukchi Sea based on shipboard experiments performed in September 2013. The reproductive capability of N. flemingeri observed in the Chukchi Sea resembled that reported in the Pacific, with the exception of a lower hatching success. Only 7.5 % of N. flemingeri eggs hatched compared with 93 % in Pacific experiments. Low hatching success is considered to be caused by failures of fertilization. The potential recruitment number for N. flemingeri suggests that it is unlikely to establish expatriate Arctic populations in the near future.
摘要译文
北极浮游动物的种类组成有很大的不同，北太平洋和白令海浮游动物。特别是与海冰退缩更大的变暖，北太平洋物种的繁殖输送到楚科奇海和以后可能导致的变化在北极深海生态系统。我们报告的产蛋量和孵化率基础上， 2013年9月进行的船上试验N的生殖能力，楚科奇海flemingeri观察到类似的报道在太平洋的楚科奇海太平洋桡足类Neocalanus flemingeri中，除一降低孵化成功。孵化与93 ％ 25太平洋试验相比N. flemingeri鸡蛋只有7.5 ％， 25 。低孵化成功被认为是通过受精失败引起的。潜在招募数为N. flemingeri表明，这是不太可能建立外籍北极人口在不久的将来。
Kohei Matsuno [1] Atsushi Yamaguchi [2] Toru Hirawake [2] Shigeto Nishino [3] Jun Inoue [1] Takashi Kikuchi [3]. Reproductive success of Pacific copepods in the Arctic Ocean and the possibility of changes in the Arctic ecosystem[J]. Polar Biology, 2015,38(7): 1075-1079