七彩神仙鱼繁殖间期与繁殖期体表黏液的部分组分分析

Epidermal mucus components analysis of discus fish(Symphysodon haraldi)during breeding period and interval-breeding period

为了探究七彩神仙鱼体表黏液在繁殖周期中组分的变化规律,测定七彩神仙鱼体表黏液中皮质醇、免疫球蛋白M、总蛋白、乳酸和葡萄糖的含量变化。结果表明,七彩神仙鱼体表黏液中皮质醇、免疫球蛋白M、总蛋白、乳酸和葡萄糖的含量均受亲鱼性别和繁殖时期显著影响,且繁殖时期与性别之间存在显著交互作用。在幼鱼平游期,5种组分含量在雌雄亲鱼之间存在显著差异。七彩神仙鱼开始"喂奶"后其体表黏液成分发生显著变化,尤其是雄鱼会分泌更多的营养与免疫组分来满足幼鱼需求。

To investigate the components changing rule in epidermal mucus of discus fish(Symphysodon haraldi)during the breeding period,we measured the contents of cortisol,IgM,total protein,lactic acid and glucose in epidermal mucus.The results showed that the contents of cortisol,IgM,total protein,lactic acid and glucose in the epidermal mucus of S.haraldi were significantly influenced by fish gender,breeding period and there were significant interactions beteween gender and breeding period.In the free-swimming period of larvae,the contents of five components had significant difference between the female and male parent fish.When the discus fish began‘lactating’,the components of epidermal mucus changed significantly,especially the male fish would secrete more nutrient and immune components for satisfying the needs of larvae.