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首页> 外文会议>TCS Summer Meeting >DIVERSITY, ABUNDANCE AND DISTRIBUTION OF RIVER SHRIMPS (DECAPODA, CARIDEA) IN THE LARGEST RIVER BASIN OF COSTA RICA, CENTRAL AMERICA
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DIVERSITY, ABUNDANCE AND DISTRIBUTION OF RIVER SHRIMPS (DECAPODA, CARIDEA) IN THE LARGEST RIVER BASIN OF COSTA RICA, CENTRAL AMERICA

机译：中美洲哥斯达黎加最大的河流流域河虾（Decapoda，Caridea）的多样性，丰度和分布

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Our knowledge about the biodiversity of freshwater decapods is more limited compared to that of species inhabiting estuarine and marine ecosystems. Costa Rica is not an exception of this tendency, and so far three families (Palaemonidae, Atyidae, Pseudothelphusidae) have been reported to occur in its freshwater systems. The basin of the river Grande de Térraba, Pacific slope of Costa Rica, was selected to collect data on diversity, distribution and abundance of its shrimp fauna before the largest hydroelectric construction in Central America will be implemented in these Pacific lowlands. During 2005-2008,we collected 4247 specimens of freshwater shrimps, representing two families, four genera and 13 species. Macrobrachium digueti, M. occidentale, and M. tenellum comprised 90.1% of all palaemonid shrimps, and the first two species showed the widest distribution in the river basin. Palaemonid shrimps were abundant in the vicinity of estuarine waters. Among atyid shrimp, A. margaritacea was the most abundant and collected in all river sections. The study area harbors 59% of all caridean freshwater shrimp species so far reported from Costa Rica, and 20% of the 35 Macrobrachium spp. known to occur in the eastern hemisphere. We strongly recommend that the design of any hydroelectric project includes structures permitting the passage of the migrating shrimp to mitigate the negative effects of this type of construction on the associated freshwater fauna.
机译：我们对淡水褥疮的生物多样性的知识与居住的河口和海洋生态系统的物种相比更有限。据报道，哥斯达黎加不是这种趋势的例外，迄今为止三个家庭（PalaemonIdae，Atyidae，Pseudothelphusidae）发生在其淡水系统中。在哥斯达黎加太平洋坡山坡河河河畔河流德拉拉巴河（Grandedetérraba）被选中收集其虾类动物的多样性，分销和丰富的数据，在这些太平洋低地将在中美洲最大的水电建设之前。在2005 - 2008年期间，我们收集了4247个淡水虾标本，代表两个家庭，四个属和13种。 Macrobrachium digueti，M. occidentale和M. Tenerelum占所有Palaemonid虾的90.1％，而前两种物种在河流域中展出了最广泛的分布。 Palaemonid虾在河口水域附近丰富。 Atyid虾中，A. Margaritacea是最丰富的，在所有河段中都收集。迄今为止，迄今为止迄今为止迄今为止的所有Caridean淡水虾类的59％来自哥斯达黎加，以及35种大草粒子SPP的20％。已知发生在东半球。我们强烈建议任何水力发电项目的设计包括允许迁移虾通过这种结构对相关淡水动物的负面影响来减轻这种结构的负面影响。

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