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首页> 外文期刊>Journal of Ichthyology >Isolated Charrs of the Genus Salvelinus (Salmonidae) from Lakes of the Uzon Caldera Kamchatka: Charr of Lake Dal'nee
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Isolated Charrs of the Genus Salvelinus (Salmonidae) from Lakes of the Uzon Caldera Kamchatka: Charr of Lake Dal'nee

机译：从乌松破火山口堪察加湖中分离出来的沙柳属（Salmonidae）的Charrs：Dal'nee湖的Charr

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摘要

Charrs of the genus Salvelinus from the ultraoligotrophic Lake Dal'nee Maar differ from anadro-mous Dolly Varden S. ma/ma in larger head with elongated jaws, larger gill cover, lower body with a deep caudal peduncle and short pelvic fins displaced anteriorly, larger number of scales in the lateral line, and larger number of rays in the unpaired fins. The lacustrine charrs also differ from the maternal Dolly Varden population in longer free part of the maxilla, lower widths of the opercular bones, andnarrower suspensorium. Polymorphism of mtDNA is low, and unique haplotypes of the D-loop control region are not revealed. The life span of the lacustrine charrs reaches 11 years; and their maximum length and weight are 47 cm and 820 g. The spawning is registered in the fall at the slope of the bottom near the mouth of the single stream flowing into the lake. The abundance of the spawning group slightly exceeds 1000 individuals. This group is recruited from offspring migrating during their early life tothe stream with limited food resources, and more numerous progeny remaining in the lake do not reach sexual maturity. The main food sources of adult charrs during summer are planktonic crustaceans, imago of insects, and own juveniles.
机译：超寡营养湖达勒尼·马尔（Dal'nee Maar）的Salvelinus属的细菌与厌食动物的多莉·瓦尔登·萨玛（Dolly Varden S. ma / ma）不同，头部较大，下颌细长，s盖较大，下半身有深的尾柄，骨盆鳍短而向前移位，横线上的鳞片数量更多，未配对的鳍片中的光线数量更多。湖角char与母体多莉·瓦尔登（Dolly Varden）的母体在上颌较长的游离部分，小眼骨的宽度较小和悬吊的鼻腔方面也有所不同。 mtDNA的多态性很低，并且没有揭示D环控制区的独特单倍型。湖炭黑的寿命长达11年。其最大长度和重量分别为47厘米和820克。产卵记录在秋天流入附近流入湖中的单流口附近的底部倾斜处。产卵组的数量略多于1000个个体。这群人是从幼年时迁移到食物资源有限的溪流中招募的，湖中剩余的后代还没有达到性成熟的程度。夏季，成年炭疽的主要食物来源是浮游甲壳类动物，成虫类昆虫和幼体。

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