Birds optimize fruit size consumed near their geographic range limits

• 成果类型: Article
• 署名作者: Martins, Lucas P.; Stouffer, Daniel B.; Blendinger, Pedro G.; Boehning-Gaese, Katrin; Costa, Jose Miguel; Dehling, D. Matthias; Donatti, Camila I.; Emer, Carine; Galetti, Mauro; Heleno, Ruben; Menezes, Icaro; Morante-Filho, Jose Carlos; Munoz, Marcia C.; Neuschulz, Eike Lena; Pizo, Marco Aurelio; Quitian, Marta; Ruggera, Roman A.; Saavedra, Francisco; Santillan, Vinicio; Schleuning, Matthias; da Silva, Luis Pascoal; da Silva, Fernanda Ribeiro; Tobias, Joseph A.; Traveset, Anna; Vollstaedt, Maximilian G. R.; Tylianakis, Jason M.
• 署名单位: University of Canterbury; Universidad Nacional de Tucuman; Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET); Universidad Nacional de Tucuman; Universidad Nacional de Tucuman; Miguel Lillo Foundation; Goethe University Frankfurt; Universidade de Coimbra; Monash University; Conservation International; Northern Arizona University; Jardim Botanico do Rio de Janeiro; Universidade Estadual Paulista; State University System of Florida; Florida International University; Universidade Estadual de Santa Cruz; Universidad de La Salle; Consejo Superior de Investigaciones Cientificas (CSIC); ATTITUS Educacao; Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET); Universidad Mayor de San Andres; Universidad Catolica de Cuenca; Universidade do Porto; Universidade do Porto; Imperial College London; University of Copenhagen; University of Canterbury
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-9585
• DOI: 10.1126/science.adj1856
• 发表日期: 2024-07-19
• 页码: 331-336
• 关键词: interspecific competition; frugivorous birds; seed; forest; networks; phenology; selection; climate; plants; traits

摘要

Animals can adjust their diet to maximize energy or nutritional intake. For example, birds often target fruits that match their beak size because those fruits can be consumed more efficiently. We hypothesized that pressure to optimize diet-measured as matching between fruit and beak size-increases under stressful environments, such as those that determine species' range edges. Using fruit-consumption and trait information for 97 frugivorous bird and 831 plant species across six continents, we demonstrate that birds feed more frequently on closely size-matched fruits near their geographic range limits. This pattern was particularly strong for highly frugivorous birds, whereas opportunistic frugivores showed no such tendency. These findings highlight how frugivore interactions might respond to stressful conditions and reveal that trait matching may not predict resource use consistently.