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首页> 外文期刊>Ecological research >Condition status and parasite infection of Neogobius kessleri and N. melanostomus (Gobiidae) in their native and non-native area of distribution of the Danube River
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Condition status and parasite infection of Neogobius kessleri and N. melanostomus (Gobiidae) in their native and non-native area of distribution of the Danube River

机译：多哥河的本色和非本色分布地区的凯氏新鞭毛虫和黑腹念珠菌（戈壁科）的状况和寄生虫感染

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摘要

The success of introduced species is often facilitated by escape from the effects of natural predators and parasites. Introduced species can profit from this favourable situation, attaining higher population densities and greater individual sizes in novel areas. In this study, somatic condition and parasite infection were compared between native and non-native populations of Neogobius kessleri Giinther; introduced only within the interconnected Danube and Rhine River system, and N. melanostomus (Pallas); widely introduced throughout several river systems in Europe and North America. Higher values of Fulton's condition factor were observed in non-native populations of both goby species. Neogobius melanostomus attained higher gonadosomatic index values in non-native populations, indicating potential increased investment in reproduction in its new area. A lower splenosomatic index was observed in non-native populations, especially in N. melanostomus. Parasite infracommunity richness and mean abundance were higher in N. kessleri in both native and non-native populations, suggesting higher susceptibility of N. kessleri to these parasites. Non-native populations of both hosts showed higher infra-community richness as a result of acquiring parasites native to the new area, but lower parasite abundance. Differences in success of the introduction and establishment in new areas between the two fish species may be associated with a relatively low parasite infection rate and a higher gonadosomatic index in non-native populations of N. melanostomus in comparison to N. kessleri.
机译：摆脱自然捕食者和寄生虫的影响通常有助于成功引进物种。引进的物种可以从这种有利的情况中受益，在新的地区获得更高的种群密度和更大的个体规模。在这项研究中，比较了当地人和非本地人的Neogobius kessleri Giinther的身体状况和寄生虫感染。仅在相互连接的多瑙河和莱茵河系统以及黑皮猪笼草（Pallas）中引入；在欧洲和北美的多个河流系统中广泛引入。在两种虾虎鱼物种的非本地种群中观察到较高的富尔顿条件因子值。新黑猩猩在非本地人口中获得了更高的性腺体指数值，这表明在其新区域繁殖的投资可能增加。在非本地人群中观察到较低的脾体指数，尤其是在黑鼻猪笼草中。在本地和非本地人群中，凯斯勒猪笼草的寄生虫次种群丰富度和平均丰度都较高，表明凯斯勒猪笼草对这些寄生虫的敏感性更高。由于获得了新地区的原生寄生虫，因此两个寄主的非本地人口显示出较高的社区内丰富度，但寄生虫丰度较低。与凯斯勒猪笼草相比，这两种鱼类在新区域引入和建立成功的差异可能与黑种猪笼草非本地种群中相对较低的寄生虫感染率和较高的性腺体指数有关。

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  • 来源
    《Ecological research》 |2010年第4期|P.857-866|共10页
  • 作者

    Marketa Ondrackova; Katerina Francova; Martina Davidova; Matej Polacik; Pavel Jurajda;

  • 作者单位

    Institute of Vertebrate Biology, v.v.i., Academy of Sciences of the Czech Republic, Kvetna 8, 603 65 Brno, Czech Republic Department of Botany and Zoology, Faculty of Science,Masaryk University, Kotlarska 2, 611 37 Brno, Czech Republic;

    rnInstitute of Vertebrate Biology, v.v.i., Academy of Sciences of the Czech Republic, Kvetna 8, 603 65 Brno, Czech Republic Department of Botany and Zoology, Faculty of Science,Masaryk University, Kotlarska 2, 611 37 Brno, Czech Republic;

    rnDepartment of Botany and Zoology, Faculty of Science,Masaryk University, Kotlarska 2, 611 37 Brno, Czech Republic;

    rnInstitute of Vertebrate Biology, v.v.i., Academy of Sciences of the Czech Republic, Kvetna 8, 603 65 Brno, Czech Republic;

    rnInstitute of Vertebrate Biology, v.v.i., Academy of Sciences of the Czech Republic, Kvetna 8, 603 65 Brno, Czech Republic;

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  • 正文语种 eng
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  • 关键词

    danube river; fish introductions; parasite; ponto-caspian gobies; apollonia melanostoma;

    机译：多瑙河鱼类介绍;寄生虫里海虾虎鱼;阿波罗尼亚黑色素瘤;

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