Abstract—

In the summer period of 2017, the threaded sculpin Gymnocanthus pistilliger occurred at depths from 14 (minimum depth of trawling) to 64 m in the Sea of Okhotsk off the western coast of Kamchatka. Areas of the maximum G. pistilliger concentrations are only partially similar in terms of fish mass and abundance. The maximum average catches in terms of biomass were recoded between 55° and 56° N, where a high abundance of the species was also recorded. The maximum average catches in terms of abundance were obtained southerly, between 53° and 54° N. The species is the most common and abundant to the depths of 40−50 m. The length of specimens varies within 6−26 (on average 18.3) cm. The ratio of males to females is 0.4 : 1. The smallest sizes of specimens of both sexes were recorded in the depth range of 14−20 m; the average sizes of males and females increase with depth. In the summer period, G. pistilliger occurs in a wide temperature range between 0.4 and 12.1°С on the West Kamchatka shelf. The highest catches of the species were recorded at the temperature of 1.0−3.5°С in the main part of the bathymetric interval, and at 3.5−6.0°С in a shallow zone. According to the results of summer surveys off the western coast of Kamchatka the estimated abundance of G. pistilliger was 146 million ind., and the biomass was 11200 t.

中文翻译：

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堪察加半岛西海岸夏季游轮虫的分布，大小和性别组成及其资源的现代状况

摘要—

在2017年夏季，带螺纹的尖嘴Gym子（Gymnocanthus pistilliger）发生在堪察加西部沿海的鄂霍次克海（从最低拖网深度）到64 m的深度。拳头最大的面积就鱼类的数量和丰度而言，其浓度仅部分相似。在生物量方面，最大平均捕获量在55°N至56°N之间重新编码，其中还记录了该物种的高丰度。就丰度而言，最大的平均捕获量是从南方获得的，介于53°和54°N之间。该物种是最常见的，并且在40-50 m的深度处丰富。标本的长度在6至26厘米（平均18.3厘米）之间变化。男女之比为0.4：1。在14-20 m的深度范围内记录了最小的性别标本。男性和女性的平均体型随深度的增加而增加。在夏季，G。pistilliger发生在西堪察加大陆架上0.4至12.1°С的宽温度范围内。在测深间隔的主要部分，该物种的最高捕获量记录在温度为1.0-3.5°С，而在浅水区记录为3.5-6.0°С。根据堪察加西部沿海地区夏季调查的结果，估计雌蕊G. pistilliger的丰度为1.46亿印度盾，生物量为11200 t。