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首页> 外文期刊>Zoologia (Curitiba) >Spatiotemporal variations of the ichthyofaunal structure accompanying the seabob shrimp, Xiphopenaeus kroyeri (Crustacea: Penaeidae), fishery in important fishery areas of the Santa Catarina shore, Brazil
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Spatiotemporal variations of the ichthyofaunal structure accompanying the seabob shrimp, Xiphopenaeus kroyeri (Crustacea: Penaeidae), fishery in important fishery areas of the Santa Catarina shore, Brazil

机译：在巴西圣卡塔琳娜州海岸重要渔区捕捞的海带虾Xiphopenaeus kroyeri（甲壳纲：对虾科）伴随着的鱼鳞茎结构的时空变化

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摘要

The present study analyzed qualitatively and quantitatively the temporal and spatial changes in the fish assemblages present in seabob shrimp distribution sites in two important fishing areas of the Santa Catarina coast. Monthly bottom trawls, conducted between March 2007 and February 2008 in Balneário Barra do Sul and Penha, yielded a total of 38,608 specimens belonging to 54 species, of which 35 occurred in both regions. The Sciaenidae was the most represented family in both number of species and abundance of individuals. The dominant species were Stellifer rastrifer (Jordan, 1889), S. brasiliensis (Schultz, 1945), Paralonchurus brasiliensis (Steindachner, 1875), Isopisthus parvipinnis (Cuvier, 1830), Trichiurus lepturus (Linnaeus, 1758), and Pellona harroweri (Fowler, 1917). The ichthyofaunal structure showed a spatiotemporal dependence with significant differences in March 2007 and January and February 2008 between Balneário Barra do Sul and Penha. The main differences were attributed to dominant species, which were responsible for significantly altering the abundance of the assemblages. The species richness was similar in both sites, whereas the diversity and equitability indices showed monthly fluctuation patterns that differed between Balneário Barra do Sul and Penha. The Shannon index differed in August, September and November 2007 and January and February 2008, with an H' ranging from 0.74 to 1.98 influenced by dominant species, whereas significant variations were observed for the Pielou index in November 2007 and February 2008. The Berger-Parker index demonstrated a clear dominance pattern where the monthly numeric contribution of a single species ranged from approximately 30 to 80%. Although the results showed differences between fishing grounds 25% of the time, we conclude that fish assemblies captured as accompanying fauna in artisanal seabob shrimp fisheries showed statistically similar characteristics for most of the year, although Balneário Barra do Sul and Penha are 35 km away from each other.
机译：本研究定性和定量分析了圣卡塔琳娜州海岸两个重要渔区的海虾对虾分布点中鱼类种群的时空变化。 2007年3月至2008年2月在南巴尔尼奥里奥巴拉杜和佩尼亚进行的每月底拖网捕捞共产生38608个标本，属于54种，其中两个地区都有35个标本。在物种数量和个体丰富度方面，Sciaenidae科是最有代表性的科。优势种有Stellifer rastrifer（Jordan，1889），S。brasiliensis（Schultz，1945），Paralonchurus brasiliensis（Steindachner，1875），Isopisthus parvipinnis（Cuvier，1830），Trichiurus lepturus（Linnaeus，1758）和Pellona harrow（Felloer harrow） （1917年）。鱼喙结构显示出时空依赖性，在2007年3月以及BalneárioBarra do Sul和Penha之间存在显着差异。主要差异归因于优势种，它们显着改变了组合的丰度。两个地点的物种丰富度相似，而多样性和公平指数显示的月波动模式在BalneárioBarra do Sul和Penha之间有所不同。香农指数在2007年8月，9月和11月以及2008年1月和2008年2月有所不同，受优势种的影响，H'值在0.74至1.98之间，而皮耶卢指数在2007年11月和2008年2月观察到显着变化。帕克指数显示出明显的优势格局，其中单个物种的月度数字贡献约为30％至80％。尽管结果显示25％的时间之间渔场之间存在差异，但我们得出的结论是，在全年的大部分时间里，作为人工海带虾捕捞活动中的伴生鱼类集会在统计学上都表现出相似的特征，尽管BalneárioBarra do Sul和Penha距离该地区35公里彼此。

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