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Reproduction compromises adaptive immunity in a cyprinid fish

机译：繁殖损害塞浦路斯鱼类的适应性免疫

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摘要

Vertebrates differ in their ability to mount an adaptive immune response to novel antigens. Bioenergetic resources available to an organism are finite; investment in reproduction compromises immune function and may therefore affect critical life history trade-offs. We tested whether reproduction impairs the ability to produce an antibody response against a novel antigen in roach (Rutilus rutilus). The antigen approach has rarely been used in fish studies, and the ability to produce an antibody response during reproductive season has never been tested in cyprinid fish before. The fish in an experimental group were injected with a Brucella abortus (BA) antigen, while the fish in a control group were injected with an isotonic saline solution. Blood samples were extracted from all the fish to obtain the total number and proportion of blood cells such as lymphocytes, neutrophils and antioxidant glutathione. The groups were tested during the spawning season and one week after it had ended. The roach were unable to mount an immune response during spawning but produced a robust response after it. We conclude that reproduction is costly in roach, as indicated by the increased concentration of neutrophils in fish injected with BA during spawning, as well as the negative associations between neutrophil counts and glutathione levels. This study demonstrates the potential of BA antigen as a research tool in experimental research on fish ecological immunology.
机译：脊椎动物对新型抗原的适应性免疫反应的能力不同。生物体可利用的生物能资源是有限的。对生殖的投资会损害免疫功能，因此可能会影响生命周期的关键权衡。我们测试了繁殖是否会损害在蟑螂（Rutilus rut​​ilus）中产生针对新型抗原的抗体应答的能力。在鱼类研究中很少使用抗原方法，并且以前从未在塞浦路斯鱼类中测试过在繁殖季节产生抗体应答的能力。实验组中的鱼注射了布鲁氏流产（BA）抗原，而对照组中的鱼注射了等渗盐溶液。从所有鱼类中提取血样，以获得诸如淋巴细胞，中性粒细胞和抗氧化剂谷胱甘肽之类的血细胞的总数和比例。在产卵季节和结束后一个星期对各组进行了测试。蟑螂在产卵期间无法引发免疫反应，但在产卵后产生了强烈的反应。我们得出结论，如在产卵期注射BA的鱼中嗜中性粒细胞浓度增加，以及嗜中性粒细胞数与谷胱甘肽水平之间呈负相关关系，表明在蟑螂中繁殖成本很高。这项研究证明了BA抗原作为鱼类生态免疫学实验研究工具的潜力。

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  • 来源
    《Ecological research》 |2017年第4期|559-566|共8页
  • 作者

    Krams Indrikis A.; Rumvolt Katariina; Saks Lauri; Krams Ronalds; Elferts Didzis; Vrublevska Jolanta; Rantala Markus J.; Kecko Sanita; Cirule Dina; Luoto Severi; Krama Tatjana;

  • 作者单位

    Univ Tartu, Inst Ecol & Earth Sci, Tartu, Estonia|Anim Hlth & Environm BIOR, Inst Food Safety, Riga, Latvia;

    Univ Tartu, Estonian Marine Inst, Tartu, Estonia;

    Univ Tartu, Estonian Marine Inst, Tartu, Estonia;

    Daugavpils Univ, Inst Life Sci & Technol, Dept Biotechnol, Daugavpils, Latvia;

    Anim Hlth & Environm BIOR, Inst Food Safety, Riga, Latvia|Univ Latvia, Dept Bot & Ecol, Riga, Latvia;

    Daugavpils Univ, Inst Life Sci & Technol, Dept Biotechnol, Daugavpils, Latvia;

    Univ Turku, Dept Biol, Turku, Finland|Univ Turku, Turku Brain & Mind Ctr, Turku, Finland;

    Daugavpils Univ, Inst Life Sci & Technol, Dept Biotechnol, Daugavpils, Latvia;

    Anim Hlth & Environm BIOR, Inst Food Safety, Riga, Latvia;

    Univ Auckland, English Drama & Writing Studies, Auckland, New Zealand|Univ Auckland, Sch Psychol, Auckland, New Zealand;

    Daugavpils Univ, Inst Life Sci & Technol, Dept Biotechnol, Daugavpils, Latvia|Estonian Univ Life Sci, Inst Agr & Environm Sci, Dept Plant Protect, Tartu, Estonia;

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  • 正文语种 eng
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  • 关键词

    Adaptive immunity; Fish; Life history; Reproduction; Spawning; Trade-offs;

    机译：适应性免疫;鱼类;生活史;繁殖;产卵;权衡;

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