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首页> 外文期刊>Estuarine Coastal and Shelf Science >Ichthyoplankton spatial pattern in the inner shelf off Bahia Blanca Estuary, SW Atlantic Ocean
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Ichthyoplankton spatial pattern in the inner shelf off Bahia Blanca Estuary, SW Atlantic Ocean

机译：南大西洋西南巴伊亚布兰卡河口内架上的浮游鱼类空间格局

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摘要

This study focuses on the composition, abundance and distribution of ichthyoplankton in the inner shelf area off Bahia Blanca Estuary on the SW Atlantic Ocean during late spring. Eggs and larvae of Brevoortia aurea, Engraulis anchoita, Parona signata, Sciaenidae spp. - such as Cynoscion guatucupa and Micro-pogonias fumieri -, and Odontesthes argentinensis were found. Species richness was low probably as a result of season and shallow depths. Ichthyoplankton abundance reached values close to 10 000 per 10 m~(-3) (eggs) and 4000 per 10 m~(-3) (larvae) and displayed a spatial distribution pattern with maximum abundance values restricted to a band parallel to the coast. Differences between egg and larval patterns, probably derived from a different displacement and hydrodynamic behavior, were observed. Egg and larvae distribution patterns were found related with spawning areas and to directly depend on salinity and mesozooplankton. The larvae distribution pattern, in particular, was found to inversely depend on particulate organic carbon. In addition, the geographic location of egg and larvae maxima strongly coincided with a saline front reported for this area in springtime, thus suggesting a direct relationship with it.
机译：这项研究的重点是晚春西南大西洋巴伊亚布兰卡河口内陆架区鱼鳞浮游生物的组成，丰度和分布。鸡蛋花的Breoortia aurea，Engraulis anchoita，Parona signata，Sciaenidae spp的卵和幼虫。 -发现了食蟹猕猴和烟熏微荚g-和发现了阿根廷齿don。物种丰富度很低，可能是由于季节和深度较浅所致。浮游鱼类的丰度达到接近每10 m〜（-3）（卵）10000的值和每10 m〜（-3）（幼虫）4000的值，并显示了空间分布格局，最大丰度值限制在平行于海岸的带上。观察到卵和幼虫模式之间的差异可能源自不同的位移和流体动力学行为。发现卵和幼虫的分布模式与产卵区有关，并直接取决于盐度和中生浮游动物。特别地，发现幼虫的分布模式反过来依赖于颗粒有机碳。此外，鸡蛋和幼虫最大值的地理位置与春季该地区的盐碱锋线高度吻合，因此暗示了与该区域的直接关系。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2009年第3期|383-392|共10页
  • 作者

    Hoffmeyer Monica Susana; Menendez Maria Clara; Biancalana Florencia; Nizovoy Alicia Mabel; Torres Eduardo Ramon;

  • 作者单位

    Institute Argentino de Oceanografia-IADO (CONICET- UNS), Camino La Carrindanga km 7.5, B8000FWB Bahia Blanca, Buenos Aires, Argentina Facultad Regional Bahia Blanca, Universidad Tecnologica Nacional, 11 de Abril 461, B8000LMI, Bahia Blanca, Buenos Aires, Argentina;

    Institute Argentino de Oceanografia-IADO (CONICET- UNS), Camino La Carrindanga km 7.5, B8000FWB Bahia Blanca, Buenos Aires, Argentina;

    Institute Argentino de Oceanografia-IADO (CONICET- UNS), Camino La Carrindanga km 7.5, B8000FWB Bahia Blanca, Buenos Aires, Argentina;

    Centro Austral de Investigations Cientificas y Tecnicas, B. Houssay 200, V9410CAB Ushuaia, Tierra del Fuego, Antartida e Islas del Atlantico Sur, Argentina;

    Institute Argentino de Oceanografia-IADO (CONICET- UNS), Camino La Carrindanga km 7.5, B8000FWB Bahia Blanca, Buenos Aires, Argentina Universidad Nacional de la Patagonia Austral, Av. Lisandro de la Torre 860, Z9400JZR Rio Callegos, Santa Cruz, Argentina;

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  • 正文语种 eng
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  • 关键词

    fish eggs; fish larvae; distribution; zooplankton; fronts; Argentina;

    机译：鱼卵;鱼幼虫分配;浮游动物战线阿根廷;

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