Movements of mottled sculpins (Cottus bairdii) in a Michigan stream: how restricted are they?
Movements of mottled sculpins (Cottus bairdii) in a Michigan stream: how restricted are they?
复制标题
密歇根溪流中斑杜父鱼 (Cottus bairdii) 的活动：它们受到的限制程度如何？
DOI：
10.1139/f08-189
复制
发表时间：
2009
影响因子：
2.4
通讯作者：
S. Kohler
中科院分区：
文献类型：
--
作者：
M. Breen;C. Ruetz;K. Thompson;S. Kohler
我们监测了94只标记了无源集成应答器(PIT)标签的斑纹雕像(Cottus Bairdii)，以研究季节性运动模式。便携式天线对坑标鱼的检测效率较高(平均为0.76±0.03)。在夏季，夜间搜索比白天重新定位更有效，较小的鱼(<；65 mm)比较大的鱼(≥65；mm)更容易被发现。雕塑更多地利用侵蚀生境，而不是沉积生境，特别是在夏季和夜间。在150米范围内的搜索尝试表明，夏季和冬季之间的移位、平均移动距离和归宿范围没有显著差异，这表明季节对移动没有强烈影响。此外，运动指标与塑形的大小无关。然而，对更大范围(700米)的补充搜索显示，16%的坑标鱼在1年内活动超过100米，最大排水量为511米，而活动鱼通常表现为上游游动。
We monitored 94 mottled sculpins (Cottus bairdii) marked with passive integrated transponder (PIT) tags to examine seasonal movement patterns. High detection efficiency (mean ± standard error = 0.76 ± 0.03) of PIT-tagged fish was obtained with a portable antenna. Nighttime searches were more effective than daytime relocations in summer, and smaller fish (<65 mm) were detected more readily than larger fish (≥65 mm). Sculpins used erosional habitats more than depositional habitats, particularly during summer and nighttime. Search attempts within a 150 m reach showed that displacement, mean movement distance, and home range did not differ significantly between summer and winter, suggesting that season did not strongly influence movement. Additionally, movement metrics were unrelated to sculpin size. However, supplementary searches of a larger reach (700 m) showed that 16% of PIT-tagged fish moved more than 100 m over 1 year, with a maximum displacement of 511 m, and mobile fish typically displayed upstream b...