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首页> 外文期刊>Transactions of the Nebraska Academy of Sciences and affiliated societies >Common Carp (cyprinus Carpio) Population Characteristics And Recruitment In Two Nebraska Sandhill Lakes
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Common Carp (cyprinus Carpio) Population Characteristics And Recruitment In Two Nebraska Sandhill Lakes

机译：两个内布拉斯加州沙丘湖常见鲤（鲤）种群特征和招聘

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摘要

Common carp (Cyprinus carpio) are a non-native fish in the United States. Due to their prolific nature, they may have detrimental effects on fish and waterfowl communities, including those of Nebraska Sandhill lakes. Information regarding population structure, age, and growth of common carp in Nebraska Sandhill lakes is lacking. We examined adult common carp populations from Marsh and Pelican lakes on the Valentine National Wildlife Refuge. We described size and age structure, growth, and recruitment patterns for these two populations. Age-frequency histograms revealed consistent recruitment of common carp through age 7 in Marsh Lake but inconsistent recruitment in Pelican Lake. Common carp growth was initially faster in Pelican Lake than in Marsh Lake, likely because of a less dense carp population in Pelican Lake. Pelican Lake contains northern pike (Esox lucius) and largemouth bass (Micropterus salmoides), top-level piscivores, while Marsh Lake contains no predatory fish species. The absence of top-level piscivores preying on age-0 common carp may have led to the denser population in Marsh Lake. Further research is recommended to understand fully the role of common carp in Sandhill lake communities.
机译：鲤鱼（Cyprinus carpio）在美国是非本地鱼类。由于其多产的性质，它们可能对鱼类和水禽群落（包括内布拉斯加州桑德希尔湖的湖泊）产生不利影响。内布拉斯加州桑德希尔湖缺乏有关种群结构，年龄和鲤鱼生长的信息。我们在情人节国家野生动物保护区检查了沼泽和鹈鹕湖中成年鲤的种群。我们描述了这两个人群的大小和年龄结构，成长和招聘模式。年龄-频率直方图显示，在沼泽湖中，到7岁时，鲤鱼的募集情况稳定，而鹈鹕湖中的鲤鱼募集情况却不一致。最初，鹈鹕湖中的鲤鱼生长快于沼泽湖，这可能是因为鹈鹕湖中的鲤鱼种群较少。鹈鹕湖包含北梭鱼（Esox lucius）和大嘴鲈（Micropterus salmoides），顶级食肉动物，而沼泽湖不包含掠食性鱼类。缺乏以0岁零龄鲤鱼为食的顶级食肉动物，可能导致沼泽湖的人口更加密集。建议进一步研究以充分了解鲤鱼在Sandhill湖社区中的作用。

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