鱼钩眼对准对鱼饵圈钩和J钩深钩率的影响

IF 0.7 4区 农林科学 Q4 FISHERIES
Kevin A. Meyer, John M. Fennell, Luciano V. Chiaramonte
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引用次数: 0

摘要

有充分的证据表明,圆形鱼钩通常会减少被诱饵捕获的鱼的深钩。然而,几十年来,一直有猜测,钩眼必须是直相对于柄圆钩正常工作,但这方面的钩子配置很少被调查。当检测到撞击时,我们使用被动钩组,比较了深钩率和捕获概率,以栖息在溪流中的鳟鱼(黄石切喉鳟鱼)。(吉尔伯特),虹鳟鱼[j]。(和切喉鳟鱼(彩虹鳟鱼的杂交品种))用带饵的圆形和J形鱼钩捕获,鱼眼要么与鱼腿垂直,要么从鱼腿上翘起。上岸的鱼平均总长度为26厘米,范围为11至46厘米。大多数鱼(83%)在上颚或下颚被钩住,但16%的鱼被深深地钩住(即在食道或鳃上)。正如预期的那样,圆钩的深钩率(10%)低于J钩(24%)。Logistic回归模型结果表明,钩眼方向对深钩无影响,圆钩和直钩的深钩率分别为11.0%和8.2%,而J钩和直钩的深钩率分别为21.7%和25.3%。模型结果还显示,垂钓者之间的深钩概率存在差异,但物种之间没有差异,与鱼的长度无关。捕获概率(即,鱼撞击导致鱼落地的比例)在钩子或钩眼方向之间没有差异。与一些人的看法相反,我们的研究结果表明,当垂钓者使用带饵的圆钩钓鳟鱼时,改变钩眼的角度并不影响深钩率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of hook eye alignment on deep hooking rates for stream-dwelling trout caught with baited circle and J hooks

It has been well documented that circle hooks generally reduce deep hooking of bait-caught fish. However, for decades there has been speculation that the hook eye must be straight relative to the shank for circle hooks to function properly, yet this aspect of hook configuration has rarely been investigated. Using a passive hook set when strikes were detected, we compared deep hooking rates and catch probability for stream-dwelling trout (Yellowstone cutthroat trout [Oncorhynchus clarkii bouvieri Jordan & Gilbert], rainbow trout [O. mykiss Walbaum], and cutthroat trout × rainbow trout hybrids) caught using baited circle and J hooks with the eye either straight with or turned-up from the shank. Landed fish averaged 26 cm in total length and ranged from 11 to 46 cm. Most fish (83%) were hooked either in the upper or lower jaw, but 16% were hooked deeply (i.e., either in the esophagus or the gills). As expected, the deep hooking rate was lower for circle hooks (10%) than for J hooks (24%). Logistic regression model results indicated that hook eye orientation had no effect on deep-hooking, with deep hooking rates of 11.0% and 8.2% for circle hooks with angled-up and straight eyes, respectively, compared to 21.7% and 25.3% for J hooks with angled-up and straight eyes. Model results also revealed that deep hooking probability differed among anglers but did not differ between species and was not related to fish length. Catch probability (i.e., the proportion of fish strikes that resulted in a landed fish) did not differ between hooks or hook eye orientations. Contrary to some perceptions, our results suggest that changing the angle of the hook eye does not affect deep hooking rates when anglers use baited circle hooks to land stream-dwelling trout.

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来源期刊
Journal of Applied Ichthyology
Journal of Applied Ichthyology 生物-海洋与淡水生物学
CiteScore
2.30
自引率
11.10%
发文量
73
审稿时长
3-8 weeks
期刊介绍: The Journal of Applied Ichthyology publishes articles of international repute on ichthyology, aquaculture, and marine fisheries; ichthyopathology and ichthyoimmunology; environmental toxicology using fishes as test organisms; basic research on fishery management; and aspects of integrated coastal zone management in relation to fisheries and aquaculture. Emphasis is placed on the application of scientific research findings, while special consideration is given to ichthyological problems occurring in developing countries. Article formats include original articles, review articles, short communications and technical reports.
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