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首页> 外文期刊>Estuarine Coastal and Shelf Science >An attempt to extend the Habitat Harshness Hypothesis to tidal flats: A case study of Anomalocardia brasiliana (Bivalvia: Veneridae) reproductive biology
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An attempt to extend the Habitat Harshness Hypothesis to tidal flats: A case study of Anomalocardia brasiliana (Bivalvia: Veneridae) reproductive biology

机译：尝试将栖息地严酷性假说扩展到潮滩：以巴西异常动物（双壳类动物：Veneridae）生殖生物学为例

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摘要

The Habitat Harshness Hypothesis (HHH) predicts that populations inhabiting the intertidal area of a dissipative beach should produce more gametes and have a longer reproductive cycle than those inhabiting an intermediate or reflective beach. This hypothesis was proposed for the exposed morphodynamic continuum between the reflective and dissipative states; however, no attempt has been made thus far to verify whether the HHH is valid for tidal flats. In this study, we analysed the reproductive cycle of Anomalocardia brasiliana in an intermediate beach and in a tidal flat and compared the results to determine whether the reproductive cycles of A. brasiliana were in agreement with the predictions of the HHH and to examine the possibility of extending this hypothesis to tidal flats. A continuous spawning season and synchrony between sexes were observed at both sites, although the reproductive effort was higher in the intermediate beach. The results of this first attempt did not support the extension of the HHH to tidal flats. It is possible that hypotheses that take into account only physical variables may not be the most adequate for describing environments with such a high species richness and high abundance as tidal flats. Nevertheless, other studies are necessary to confidently expand or refute the HHH with regard to tidal flats, and this topic should be considered as a priority in future investigations in sandy beach ecology.
机译：生境苛刻假说（HHH）预测，居住在耗散海滩潮间带地区的人口比居住在中间或反射海滩上的人口应产生更多配子，并具有更长的生殖周期。提出了关于反射态和耗散态之间暴露的形态动力学连续体的这一假设。但是，到目前为止，尚未尝试验证HHH是否适用于潮滩。在这项研究中，我们分析了中间海滩和潮滩中巴西异常动物的生殖周期，并将结果进行比较，以确定巴西拟南芥的生殖周期是否与HHH的预测相符，并研究了这种可能性。将该假设扩展到潮滩。在两个地点都观察到连续的产卵季节和性别同步，尽管中间海滩的繁殖力较高。第一次尝试的结果不支持将HHH扩展到潮滩。仅考虑物理变量的假设可能无法最恰当地描述诸如潮滩这样的物种丰富度和丰度很高的环境。但是，要自信地扩展或驳斥有关潮滩的HHH，还需要进行其他研究，并且在以后的沙滩生态学研究中，应优先考虑该主题。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2014年第ptaa期|136-141|共6页
  • 作者

    Guilherme Nascimento Corte; Leonardo Querobim Yokoyama; A. Cecilia Z. Amaral;

  • 作者单位

    Programa de Pos-Graduacao em Ecologia, Laboratorio de Bentos Marinho, Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas, Rua Monteiro Lobato, 255, Campinas, SP CEP 13083-862, Brazil;

    Departamento de Oceanografia Biologica, Instituto Oceanografico, Universidade de Sao Paulo, Praca do Oceanografico, 191, Cidade Universitaria, 05508-900 Sao Paulo, SP, Brazil,Departamento de Ciencias do Mar, Universidade Federal de Sao Paulo - Campus Baixada Santista, Avenida Almirante Saldanha da Gama, 89, Santos, SP CEP 11030-040, Brazil;

    Laboratorio de Bentos Marinho, Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas, Rua Monteiro Lobato, 255, Campinas, SP CEP 13083-862, Brazil;

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  • 正文语种 eng
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  • 关键词

    sandy beach; morphodynamic; Habitat Harshness Hypothesis; reproduction; bivalve; Anomalocardia brasiliana;

    机译：沙滩;形态动力学生境苛刻假说;再生产;双壳类巴西反常心;

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