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首页> 外文期刊>Journal of Parasitology >Description of a new opecoelid trematode species from nototheniid fish in the Beagle Channel (sub-Antarctica).
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Description of a new opecoelid trematode species from nototheniid fish in the Beagle Channel (sub-Antarctica).

机译：比格犬海峡（南极洲）中的拟南芥鱼类中的一种新的皮足类吸虫物种的描述。

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摘要

Macvicaria magellanica n. sp. (Digenea: Opecoelidae) is the third representative of this genus occurring in fish in the Magellanic sub-region of sub-Antarctica and the first one found in sub-coastal waters in this area (the Beagle Channel). Its main taxonomic features include an elongate body, oral:ventral sucker ratio based on widths of 1.0:1.52-1.98, cirrus sac reaching to level of posterior half of the ventral sucker, testes arranged in tandem, numerous vitelline follicles divided into 2 groups separated by a gap parallel to the ventral sucker, vitelline follicles dorsally not confluent at the uterus and gonads, and egg dimensions of 40-51x25-32 micro m. The most similar species is Macvicaria antarctica, but it differs from the newly described species in having vitelline follicles dorsally confluent at the level of the uterus and by occurring in fish associated with the Falkland-Patagonian shelf at greater depths (at the North Scotia Ridge, 300-500 m). A key to 9 Antarctic and sub-Antarctic species of Macvicaria is included.Digital Object Identifier http://dx.doi.org/10.1645/GE-3167.1
机译：大果Macvicaria sp。 （Digenea：Opecoelidae）是该属的第三位代表，出现在南极洲麦哲伦分区的鱼类中，也是该地区近岸水域（Beagle Channel）发现的第一属。它的主要分类学特征包括细长的身体，基于1.0：1.52-1.98宽度的口腔：腹腔吸盘比率，触及囊达到腹腔后半段的水平，睾丸串联排列，许多卵黄卵泡分为两组通过与腹腔吸盘平行的间隙，卵黄卵泡在子宫和性腺的背面不汇合，卵的大小为40-51x25-32微米。最相似的物种是南极Macvicaria，但与新描述的物种不同，卵黄质卵泡在子宫的水平方向汇合，并且在与福克兰-巴塔哥尼亚陆架相关的鱼类中出现得更深（在北斯科舍脊， 300-500 m）。包括了9种南极和南极Macvicaria物种的关键数字对象标识符http://dx.doi.org/10.1645/GE-3167.1

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