Silva E R, Sancinetti G S, Fransozo A, Azevedo A, Costa R C
Núcleo em Ecologia e Desenvolvimento Sócio-Ambiental de Macaé, Universidade Federal do Rio de Janeiro, Universidade Federal do Rio de Janeiro, Macaé RJ , Brazil, Núcleo em Ecologia e Desenvolvimento Sócio-Ambiental de Macaé - NUPEM, Universidade Federal do Rio de Janeiro - UFRJ, Av. Professor Aloísio Teixeira, campus UFRJ-Macaé, CEP 27971-550, Macaé, RJ, Brazil.
Departamento de Zoologia, Instituto de Biociências, Universidade Estadual Paulista "Júlio de Mesquita Filho", Universidade Estadual Paulista, Botucatu SP , Brazil, Núcleo de Estudos em Biologia, Ecologia e Cultivo de Crustáceos - NEBECC, Departamento de Zoologia, Instituto de Biociências, Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, CEP 18618-000, Botucatu, SP, Brazil.
Braz J Biol. 2016 Apr 19;76(3):764-73. doi: 10.1590/1519-6984.01814.
This study evaluated the abundance and spatial-temporal distribution of the shrimp Xiphopenaeus kroyeri in the coastal region of Macaé, state of Rio de Janeiro, southeastern Brazil. Monthly samples were obtained from March 2008 to February 2010 in six stations located in Inner (5, 10 and 15m depth) and Outer (25, 35 and 45m depth) areas. It was used a commercial fishery boat equipped with an otter-trawl net (3.5 m mouth width, mesh size 20mm and 15mm in the cod end). Water samples were taken for determination of temperature and salinity, and sediment samples for determination of texture and organic matter content. A total of 7146 shrimps were sampled. About 95% of all shrimps were caught in the shallow area, i.e., depths <20m. Greatest abundances were recorded in winter and spring. No significant correlation was observed between sediment (phi) and abundance. The distribution of X. kroyeri in the studied area was closely related to seasonal cold waterfront of the South Atlantic Central Water (SACW) and temperature was the main factor affecting the species abundance.
本研究评估了巴西东南部里约热内卢州马卡埃沿海地区克氏剑虾的丰度和时空分布。2008年3月至2010年2月期间，每月在位于内区（水深5米、10米和15米）和外区（水深25米、35米和45米）的六个站点采集样本。使用一艘配备了双拖网（网口宽度3.5米，网囊网目尺寸20毫米和15毫米）的商业渔船。采集水样用于测定温度和盐度，采集沉积物样本用于测定质地和有机质含量。共采集了7146只虾。约95%的虾捕获于浅水区，即深度<20米处。冬季和春季记录到的丰度最高。沉积物（粒度）与丰度之间未观察到显著相关性。研究区域内克氏剑虾的分布与南大西洋中心水（SACW）的季节性冷沿岸流密切相关，温度是影响该物种丰度的主要因素。
