R. Andrew King, Rob Hillman, Jay Boyle, Jamie R. Stevens
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引用次数: 0
摘要
在英国，艾氏鲥鱼（Alosa alosa）被列为极度濒危物种，目前已知其繁殖地只有一条河流，即塔玛河。尽管有证据表明该河流的淡水下游和河口的潮汐界限处有鲥鱼产卵，但从未发现过鲥鱼幼鱼。根据线粒体 DNA 单倍型和核聚合酶链式反应--限制性片段长度多态性（PCR-RFLP）数据进行的遗传分析证实，2022 年秋季在泰马河口下游发现的鲥鱼幼鱼为鲥鱼。
Genetic data confirm the presence of juvenile Alosa alosa in the estuary of the River Tamar
Within the UK, allis shad (Alosa alosa) are classified as Critically Endangered and are known to breed in only a single river, the Tamar. Despite evidence of spawning within the lower freshwater reaches of the river and at the tidal limit within the estuary, juvenile allis shad have never been found. Genetic analysis, based on mitochondrial DNA haplotype and nuclear Polymerase Chain Reaction - Restriction Fragment Length Polymorphism (PCR-RFLP) data, confirmed that juvenile shad found within the lower Tamar estuary in autumn 2022 were A. alosa.
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