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Seasonality of bivalve larvae within a high Arctic fjord

机译：北极高峡湾内双壳类幼虫的季节性

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摘要

The temporal and spatial distribution of larval plankton of high latitudes is poorly understood. The objective of this work is to identify the occurrence and abundance of pelagic bivalve larvae within a high Arctic fjord (Adventfjorden, Svalbard) and to reveal their seasonal dynamics in relation to environmental variables-temperature, salinity and chlorophyll a-between December 2011 and January 2013. We applied a combination of DNA barcoding of mitochondrial 16S ribosomal RNA and morphological analysis to identify the bivalve larvae found within the plankton and demonstrate a strong seasonality in the occurrence of bivalve larvae, largely coinciding with periods of primary productivity. Seasonal occurrences of bivalve larval species differ from those known for other populations across species' biogeographic distribution ranges. Serripes groenlandicus, which is of circum-Arctic distribution, demonstrated a later occurrence than Mya truncata or Hiatella arctica, which are of predominantly boreal or cosmopolitan distribution, respectively. S. groenlandicus larvae demonstrate the most pronounced response to seasonality, with the shortest presence in the water column. Establishing latitudinal differences in the occurrence of bivalve larvae enhances our understanding of how reproductive traits of marine invertebrates may respond to climate-driven seasonal shifts in the occurrence of primary productivity.
机译：人们对高纬度幼虫浮游生物的时空分布知之甚少。这项工作的目的是确定北极高峡湾（Adventfjorden，斯瓦尔巴特群岛）中上层双壳类幼虫的发生和数量，并揭示它们在2011年12月至1月之间与环境变量（温度，盐度和叶绿素a）相关的季节性变化。 2013。我们结合了线粒体16S核糖体RNA的DNA条形码编码和形态分析，以识别浮游生物中发现的双壳幼虫，并证明双壳幼虫的发生具有很强的季节性，这与初级生产力时期相吻合。在整个物种的生物地理分布范围内，双壳类幼虫的季节性发生不同于其他种群的季节性发生。环北极分布的鱼（Serripes groenlandicus）的发生时间比特伦卡塔（Mya truncata）或Hiatella arctica的发生晚，后者分别主要分布在北方或世界性地区。 groenlandicus幼虫表现出对季节性的最明显反应，在水柱中的出现时间最短。在双壳类幼虫的发生中建立纬度差异可增强我们对海洋无脊椎动物繁殖性状可能如何响应初级生产力发生中气候驱动的季节性变化的理解。

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  • 来源
    《Polar biology》 |2017年第2期|263-276|共14页
  • 作者

    Brandner Melissa M.; Stubner Eike; Reed Adam J.; Gabrielsen Tove M.; Thatje Sven;

  • 作者单位

    Univ Southampton, Natl Oceanog Ctr, Ocean & Earth Sci, Southampton SO14 3ZH, Hants, England|Nord Univ, Fac Aquaculture & Biosci, POB 1490, N-8049 Bodo, Norway;

    Univ Ctr Svalbard UNIS, Dept Arctic Biol, N-9171 Longyearbyen, Norway;

    Univ Southampton, Natl Oceanog Ctr, Ocean & Earth Sci, Southampton SO14 3ZH, Hants, England;

    Univ Ctr Svalbard UNIS, Dept Arctic Biol, N-9171 Longyearbyen, Norway;

    Univ Southampton, Natl Oceanog Ctr, Ocean & Earth Sci, Southampton SO14 3ZH, Hants, England;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    Invertebrate reproduction; Bivalves; Meroplankton; Morphology; Diversity; Polar;

    机译：无脊椎动物生殖;双壳类;浮游生物;形态学;多样性;极性;

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