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Reproduction of the intertidal barnacle Balanus glandula along an estuarine gradient

机译：沿河口梯度繁殖潮间带的藤壶腺

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摘要

The barnacle Balanus glandula is predominantly an open coast species in the Northeast Pacific. However, B. glandula densely inhabits estuaries where environmental conditions such as salinity and temperature drastically differ from the open coast. The increased variability of environmental conditions within an estuary can potentially affect spatial patterns of reproduction in B. glandula. I examined gonad maturity, reproductive periodicity and fecundity, and then calculated reproductive output in B. glandula populations distributed along an estuarine gradient. Results indicated that reproductive output of this intertidal barnacle decreased four times over a spatial scale of kilometers, as a transition occurred from a marine to a freshwater habitat along an estuarine gradient. Additionally, a higher proportion of the population had well-developed gonads in the oceanic end of the estuary compared to the riverine end. These results indicate how reproductive pattern can significantly vary over a spatial scale of kilometers, resulting in site-specific contributions of offspring to the larval pool.
机译：藤壶Balanus腺主要是东北太平洋的一种开放海岸物种。然而，腺芽孢杆菌（B. glandula）密集居住在河口，那里的盐度和温度等环境条件与沿海地区截然不同。河口内环境条件变化的增加可能会影响腺体的繁殖空间格局。我检查了性腺的成熟度，生殖周期和繁殖力，然后计算了沿河口梯度分布的腺体种群的生殖输出。结果表明，这种潮间带藤本植物的生殖产量在几千米的空间尺度上下降了四倍，因为沿河口梯度从海洋向淡水栖息地过渡。此外，与河岸端相比，河口海洋端有更高比例的性腺发育。这些结果表明，生殖模式如何在几千米的空间尺度上发生显着变化，从而导致后代对幼体池的特定部位贡献。

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  • 来源
    《Marine ecology》 |2009年第3期|346-353|共8页
  • 作者

    Michael S. Berger;

  • 作者单位

    Oregon Institute of Marine Biology, University of Oregon, Charleston, OR, USA Science Programs,Washington State University, Vancouver,14204 NE Salmon Creek Avenue, Vancouver,WA 98686-9064, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    crustacean; estuary; fecundity; reproductive output;

    机译：甲壳类河口;生殖力生殖产出;

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