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首页> 外文期刊>CCAMLR science: journal of the Scientific Committee and the Commission for the Conservation of Antarctic Marine Living Resources >A functional division of Electrona carlsbergi (T?ning, 1932) area of habitat in relation to the latitudinal zonation of the Southern Ocean
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A functional division of Electrona carlsbergi (T?ning, 1932) area of habitat in relation to the latitudinal zonation of the Southern Ocean

机译：与南部海洋的纬度分区有关的Electrona carlsbergi（T？ning，1932）栖息地区域的功能划分

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摘要

During the cruise of the RV Vozrozhdenie (VNIRO, USSR) in March/April 1990 an integrated study survey was conducted in the Southern Atlantic along two meridional transects at 17° and 20°W in the latitudes from 37°30' to 55°30'S. The survey was mainly focussed on studies of distribution of adult and pre-spawning Electrona carlsbergi and also on searching for possible spawning areas of the species. During the survey the following zones within the study area were identified as having different vertical structures of water masses: Subtropical Zone, Subtropical Frontal Zone, Sub-Antarctic Zone, Polar Frontal Zone and Antarctic Zone. Samples of E. carlsbergi were analysed by length composition, sex ratio and maturity stages in relation to the location where samples had been taken. The following division of the E. carlsbergi area of habitat was suggested after the analysis: feeding area - Polar Frontal Zone; reproduction area - Sub-Antarctic Zone and Subtropical Frontal Zone. The centre of the species' area of habitat is in the Sub-Antarctic Zone because the greatest range of fish length and stages of gonad maturity has been observed in this zone.
机译：在1990年3月/ 4月RV Vozrozhdenie（苏联VNIRO）的航行期间，在南大西洋沿37°30'至55°30'S纬度的两个经线分别在17°和20°W进行了综合研究调查。这项调查主要集中在研究成年和产前产的伊氏金枪鱼的分布，还着眼于寻找该物种可能产卵的区域。在调查期间，研究区域内的以下区域被确定为具有不同的水团垂直结构：亚热带带，亚热带额带，南极带，极额带和南极带。通过相对于取样地点的长度组成，性别比和成熟阶段分析了大肠杆菌的样本。分析后建议对卡尔斯伯格大肠菌栖息地进行以下划分：觅食区-极地额带;繁殖区-亚南极带和亚热带额叶带。该物种栖息地区域的中心位于南极洲带，因为在该区域观察到了最大的鱼类长度和性腺成熟阶段。

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