Consistent behavioral syndrome across seasons in an invasive freshwater fish
Consistent behavioral syndrome across seasons in an invasive freshwater fish
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入侵淡水鱼跨季节一致的行为综合症
DOI：
10.1101/2020.03.03.974998
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Bierbach D
中科院分区：
文献类型：
--
作者：
Lukas J;Kalinkat G;Miesen FW;Landgraf T;Krause J;Bierbach D
在全球变化和生物入侵的背景下，了解行为类型和扩散趋势之间的联系已成为一个紧迫的问题。在这里，我们探讨是否分散的个人表现出的行为类型，不同于那些留在源人口。我们调查了一个野生种群的孔雀鱼（孔雀鱼），经历了每年的范围转移周期。孔雀鱼是世界上最广泛的入侵物种之一，但在温带地区，这些热带鱼只能在冬季温暖的淡水中生存。在德国的一条热变化的河流中，孔雀鱼在冬季被限制在温暖的水流中，但随着温度的升高，它们可以扩散到周边地区。我们采样的鱼从源人口和冬季废弃的网站在3月，6月和8月。鱼的大胆，社交和活动进行了测试，涉及开放领域的测试，包括与机器人社交伙伴的互动。孔雀鱼在每个样本中的所有三个特征都是一致的。源种群的平均性状表达随季节而变化，但是，我们无法检测到源种群和下游种群之间的差异。相反，所有的人群表现出显着稳定的大胆和活动之间的行为综合征，尽管强烈的季节性变化的水温和相关的环境因素。我们的结论是，随机漂移（相对于个性偏见的传播）是一个更可能的传播模式孔雀鱼，至少在调查流。面对波动的环境，孔雀鱼似乎非常有效地保持行为表达恒定，这可能有助于解释它们成功入侵和适应新的和受干扰的栖息地。
Understanding the linkage between behavioral types and dispersal tendency has become a pressing issue in light of global change and biological invasions. Here, we explore whether dispersing individuals exhibit behavioral types that differ from those remaining in the source population. We investigated a feral population of guppies (Poecilia reticulata) that undergoes a yearly range shift cycle. Guppies are among the most widespread invasive species in the world, but in temperate regions these tropical fish can only survive in winter-warm freshwaters. Established in a thermally-altered stream in Germany, guppies are confined to a warm-water influx in winter, but can spread to peripheral parts as these become thermally accessible. We sampled fish from the source population and a winter-abandoned site in March, June and August. Fish were tested for boldness, sociability and activity involving open-field tests including interactions with a robotic social partner. Guppies differed consistently among each other in all three traits within each sample. Average trait expression in the source population differed across seasons, however, we could not detect differences between source and downstream population. Instead, all populations exhibited a remarkably stable behavioral syndrome between boldness and activity despite strong seasonal changes in water temperature and associated environmental factors. We conclude that random drift (opposed to personality-biased dispersal) is a more likely dispersal mode for guppies, at least in the investigated stream. In the face of fluctuating environments, guppies seem to be extremely effective in keeping behavioral expressions constant, which could help explain their successful invasion and adaptation to new and disturbed habitats.
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DOI：
--
发表时间：
2012
期刊：
影响因子：
--
作者：
Josh E Rasmussen;M. Belk
通讯作者：
M. Belk
影响因子：
2.5
作者：
Coates, William D.;Hale, Robin;Morrongiello, John R.
通讯作者：
Morrongiello, John R.
影响因子：
2.4
作者：
Gertzen, Erin;Familiar, Oriana;Leung, Brian
通讯作者：
Leung, Brian
非本地非洲宝石鱼在入侵前线更健康，但并不更大胆：大沼泽地范围扩展的特征比较
影响因子：
2.9
作者：
D. P. López;A. A. Jungman;J. Rehage
通讯作者：
J. Rehage
入侵小龙虾范围扩大时攻击行为的差异：入侵动态的重要组成部分
影响因子：
2.9
作者：
Sandra Hudina;K. Žganec;K. Hock
通讯作者：
K. Hock