Decreased movement related to parasite infection in a diel migratory coral reef fish
Decreased movement related to parasite infection in a diel migratory coral reef fish
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昼夜洄游珊瑚礁鱼与寄生虫感染相关的运动减少
DOI：
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发表时间：
2015
影响因子：
2.3
通讯作者：
P. Sikkel
中科院分区：
文献类型：
--
作者：
R. Welicky;P. Sikkel
寄生虫感染的风险可能是动物运动模式的重要原因或后果。法国咕噜鱼是一种常见的加勒比珊瑚礁鱼，其昼夜运动模式有很好的记录，并已知其连接珊瑚礁和海草栖息地。在加勒比海东北部，已知法国咕噜鱼感染了Anilocra haemuli，这是最大和最明显的外寄生等足类动物之一。对Anilocra感染的研究表明，感染会降低宿主的游泳能力和条件，并可能改变宿主的行为。我们测试了假设的预测，A。haemuli感染影响主机法国咕噜的运动模式，特别是是否短距离的白天运动和/或珊瑚礁海草迁移在黄昏与感染。我们进行了重点观察感染和未感染的鱼在白天休息和黄昏迁移期间。我们还在珊瑚礁栖息地进行了白天和夜间调查，记录了感染个体比例的变化。我们发现，受感染的鱼移动显着低于未感染的同种在白天，观察到100%的未感染的焦点鱼和37.5%的受感染的焦点鱼在黄昏离开珊瑚礁。在珊瑚礁栖息地，与白天相比，夜间感染Anilocra的鱼类比例也显着更大。我们建议A. haemuli感染改变了宿主的移动模式，因此寄生可能间接影响珊瑚礁和海草生态系统之间的营养连接。
Risk of infection by parasites may be an important contributing cause or consequence of animal movement patterns. The diel movement patterns of French grunt, a common Caribbean coral reef fish, are well documented and known to connect reef and seagrass habitat. In the northeastern Caribbean, French grunts are known to be infected by Anilocra haemuli, one of the largest and most conspicuous ectoparasitic isopods. Studies on Anilocra infection have demonstrated that infection reduces host swimming performance and condition and may alter host behavior. We tested predictions of the hypothesis that A. haemuli infection influences the movement patterns of host French grunt, specifically whether short-distance daytime movements and/or reef–seagrass migration at dusk was associated with infection. We conducted focal observations on infected and uninfected fish during both daytime resting and dusk migration periods. We also conducted daytime and nocturnal surveys in reef habitat, documenting changes in the proportion of infected individuals. We found that infected fish move significantly less than uninfected conspecifics during the day and observed 100 % of uninfected focal fish and 37.5 % of infected focal fish departing the reef during dusk. In reef habitat, the proportion of fish infected with Anilocra was also significantly greater at night compared to daytime. We suggest that A. haemuli infection alters host movement patterns and that parasitism may therefore indirectly influence trophic connectivity between reef and seagrass ecosystems.
影响因子：
2.5
作者：
Gwendolen M. Rodgers;J. Kelley;L. Morrell
通讯作者：
Gwendolen M. Rodgers;J. Kelley;L. Morrell