Coastal dolphins provide foraging opportunities to benthic-feeding seabirds in a tropical seagrass ecosystem

IF 1.2 4区 生物学 Q4 BEHAVIORAL SCIENCES Behaviour Pub Date : 2024-06-07 DOI:10.1163/1568539x-bja10269
E. Ramos, J. Kiszka, Diana Reiss, Marcelo O. Magnasco
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Abstract

In marine ecosystems, predators can affect community and ecosystem dynamics through a variety of processes such as foraging facilitation. Here, we report evidence of foraging facilitation between common bottlenose dolphins (Tursiops truncatus) and double-crested cormorants (Nannopterum auritum) in the Caribbean seagrass-dominated atoll of Turneffe, Belize using aerial drone observations conducted in 2015-2017. While dolphins exhibited occasional aggressive behaviours toward the cormorants, the latter frequently followed dolphin movements, suggesting opportunistic pursuit of dolphins for prey access during dolphin bottom foraging activity. Our observations underscore the intricate ecological relationships among marine predators and highlight the need to quantify the mutual benefits and costs of such interactions as coastal ecosystems are rapidly changing.
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沿海海豚为热带海草生态系统中以底栖生物为食的海鸟提供觅食机会
在海洋生态系统中,捕食者可以通过觅食促进等各种过程影响群落和生态系统的动态。在此,我们利用 2015-2017 年进行的无人机航拍观测,报告了在伯利兹 Turneffe 加勒比海草为主的环礁上普通瓶鼻海豚(Tursiops truncatus)与双冠鸬鹚(Nannopterum auritum)之间觅食便利化的证据。虽然海豚偶尔会对鸬鹚表现出攻击行为,但鸬鹚经常跟随海豚移动,这表明海豚在海底觅食活动期间会伺机追逐鸬鹚以获取猎物。我们的观察结果凸显了海洋捕食者之间错综复杂的生态关系,并强调随着沿海生态系统的快速变化,有必要量化这种互动的互利和成本。
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来源期刊
Behaviour
Behaviour 生物-动物学
CiteScore
1.80
自引率
7.70%
发文量
44
审稿时长
3 months
期刊介绍: Behaviour is interested in all aspects of animal (including human) behaviour, from ecology and physiology to learning, cognition, and neuroscience. Evolutionary approaches, which concern themselves with the advantages of behaviour or capacities for the organism and its reproduction, receive much attention both at a theoretical level and as it relates to specific behavior.
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