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首页> 外文期刊>Estuarine Coastal and Shelf Science >Differences in the neighborhood: Structural variations in the carapace of shore crabs Carcinus maenas (Decapoda: Portunidae)
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Differences in the neighborhood: Structural variations in the carapace of shore crabs Carcinus maenas (Decapoda: Portunidae)

机译：邻里差异：岸蟹Carcinus maenas（Decapoda：Portunidae）甲壳的结构变化

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摘要

The present study compared the carapace structure of Carcinus maenas in two nearby sites (2 km apart) within Minho estuary, submitted to different physicochemical and ecological conditions (water temperature, pH, crabs' density and sex ratio). The carapace structure of the carapace and chelae of the crabs presented significant differences between sampling sites (t-test; p < 0.01). The SIMPER analysis revealed that the Weight/CW and Thickness/CW ratios explained all the dissimilarities found among sites. Overall, the male carapace was proportionally thicker at station 2 (t-test; p < 0.01), while the female carapace was proportionally thicker at station 1 (t-test; p < 0.001). A thicker carapace can be advantageous when competing for food or a sexual partner. We hypothetized that, since at station 2, the density of individuals was twice higher than at station 1, it is likely that agonistic encounters are more frequent, thus favouring a thicker carapace.
机译：本研究比较了Minho河口附近两个地点（相距2 km）中的美人鱼的甲壳结构，这些地点处于不同的理化和生态条件（水温，pH，蟹的密度和性别比）。蟹的甲壳和螯的甲壳结构在采样点之间存在显着差异（t检验； p <0.01）。 SIMPER分析显示，重量/ CW和厚度/ CW之比解释了站点之间发现的所有差异。总体而言，雄性甲壳在第2站处成比例地变厚（t检验； p <0.01），而雌性甲壳在第1站处成比例地增厚（t检验； p <0.001）。当争夺食物或性伴侣时，较厚的甲壳可能是有利的。我们假设，由于在第2站的人的密度是在第1站的两倍，因此可能会更频繁地发生对战，因此更喜欢较厚的甲壳。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2011年第4期|p.424-430|共7页
  • 作者

    Allan T. Souza; Martina I. Ilarri; Joana Campos; Joao C. Marques; Irene Martins;

  • 作者单位

    CIMAR/CIIMAR - Centra Interdisciplinar de Investigacao Marinha e Ambiental, Umversidade do Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal,ICBAS - Institute de Ciencias Biome'dicas de Abel Salazar, Universidade do Porto, Lg. Prof. Abel. Salazar, 2, 4099-003 Porto, Portugal;

    CIMAR/CIIMAR - Centra Interdisciplinar de Investigacao Marinha e Ambiental, Umversidade do Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal,ICBAS - Institute de Ciencias Biome'dicas de Abel Salazar, Universidade do Porto, Lg. Prof. Abel. Salazar, 2, 4099-003 Porto, Portugal;

    CIMAR/CIIMAR - Centra Interdisciplinar de Investigacao Marinha e Ambiental, Umversidade do Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal;

    IMAR - CMA, Institute of Marine Research ~ Centre for Sea and Environment, Department of Life Sciences, University of Coimbra, Apartado 3046, 3001-401 Coimbra, Portugal;

    IMAR - CMA, Institute of Marine Research ~ Centre for Sea and Environment, Department of Life Sciences, University of Coimbra, Apartado 3046, 3001-401 Coimbra, Portugal;

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  • 正文语种 eng
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  • 关键词

    competition; cuticles; exoskeleton; green crab; agonistic behavior; minho;

    机译：竞争;角质层;外骨骼青蟹激动行为民和;

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