| 刘明中,林小涛,许忠能,徐采,姚达章.2014.切鳍标记对唐鱼游泳能力的影响.动物学杂志,49(6):930-937. |
| 切鳍标记对唐鱼游泳能力的影响 |
| Influences of fins Amputation on Swimming Ability of Tanichthys albonubes |
| 投稿时间：2013-12-31 修订日期：2014-10-20 |
| DOI：DOI: 10.13859/j.cjz.201406018 |
| 中文关键词: 唐鱼 临界游泳速度 鳍组织切除 标记-重捕 迁移 |
| 英文关键词:Tanichthys albonubes Critical swimming speed Fin amputation Marking and recapture experiment Move |
| 基金项目:国家自然科学基金项目 (30970555) |
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| 中文摘要: |
| 本研究通过测定完全切除背鳍、臀鳍、尾鳍或双侧胸鳍后唐鱼（Tanichthys albonubes）临界游泳速度来评价切鳍标记对游泳能力的影响。研究结果表明，在速度增量（ΔU）为36 mm/s，持续时间（Δt）分别为5 min、10 min、15 min、20 min、25 min、30 min的条件下，唐鱼临界游泳速度会随着持续时间的延长而降低。鳍组织完整的唐鱼〔体长（24 ± 1）mm〕，在不同持续时间（Δt）条件下，其绝对临界游泳速度（Uacrit）为（251.98 ± 11.04）mm/s ~（333.78±12.44）mm/s；同等条件下，切除唐鱼的背鳍或臀鳍均不会对唐鱼的绝对临界游泳速度造成显著影响（P＞0.05），但切除唐鱼的尾鳍或胸鳍后其临界游泳速度与对照组相比极显著降低（P＜0.01），其中切除尾鳍后绝对临界游泳速度平均下降47.20%，切除胸鳍后平均下降22.98%，两者间存在极显著的差异（P＜0.01）(图2)。研究表明背鳍切除可作为野外唐鱼短期标记-重捕的手段之一。 |
| 英文摘要: |
| This research aimed at study the influence from fins amputation to the fish swimming ability to assess if it’s a feasible means to the Tanichthys albonubes marking and recapture experiment in the wild. The dorsal fins, anal fins, caudal fins and pectoral fins of the T.albonubes were respectively fully amputated. Under each fins amputation, six durations (Δt), which were respectively 5 min, 10 min, 15 min, 20 min, 25 min and 30 min, were set up to calculate the Absolute critical swimming speed(Uacrit) . All the observed value were analyzed with One-way ANOVA and Two-way ANOVA. The results showed that the critical swimming speeds slowed with the
duration extension. Fish with intact fins (BL = 24 ± 1 mm) had absolute critical swimming speed(Uacrit) from 251.98 ± 11.04 mm/s to 333.78±12.44 mm/s under different durations. In the same condition, amputating the dorsal fins or anal fins did not significantly influence the Ucrit(P＞0.05), but amputating the caudal fins or pectoral fins significantly did(P＜0.01). The removal of caudal fins and pectoral fins decreased absolute critical swimming speeds of 47.20% and 22.98% respectively, and they are in highly significant differences with each other（Fig.2）. The experimental conclusion of this research is that fully amputating the dorsal fins was a feasible means to mark the T.albonubes in marking and recapture experiments in the wild. |
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