By a News Reporter-Staff News Editor at Life Science Weekly -- A new study on Life Science Research - Avian Research is now available. According to news reporting originating from Tlalnepantla, Mexico, by NewsRx correspondents, research stated, “Interspecific competition can strongly influence community structure and limit the distribution and abundance of species. One of the main factors that determine hummingbird community structure is competition for food.”
Funders for this research include Universidad Nacional Autonoma de Mexico, U.S. Fish and Wildlife Service, Consejo Nacional de Ciencia y Tecnologia, Mexican government from the Subsecretaria de Gestion para la Proteccion Ambiental: Direccion General de Vida Silvestre.
Our news editors obtained a quote from the research from the National Autonomous University of Mexico, “The temporal and spatial distribution of nectar has a strong impact on hummingbird assemblages, shaping foraging niches according to hummingbird dominance and foraging strategy. We investigated whether body size and the degree of aggressive dominance influence feeding behaviour of hummingbirds in a temperate forest in northwestern Mexico (El Palmito, Mexico) when winter migrant hummingbirds are present in the community. First, we determined the dominance status of hummingbirds and evaluated the relationship between dominance and body mass, wing disc loading and migratory status. Secondly, we determined how hummingbird species used plant species differently. Thirdly, we examined whether the most dominant hummingbird species defended floral patches with more energy and/or with a larger number of flowers. At each flower patch, hummingbird species, number of hummingbird interactions, feeding time and number of flowers present were recorded. The total number of calories available within each floral patch was also determined. Our results demonstrate that the dominance hierarchy of 13 hummingbird species (migratory and resident) was correlated with body size but not wing disc loading, and that members of the hummingbird community showed a clear separation in resource use (by plant species). Hummingbirds at the top of the dominance hierarchy defended and fed on the best flower patches, defined by the quantity of calories available. Hence, the feeding behaviour of hummingbirds at El Palmito depends on the abundance of plant species used by hummingbirds and on the amount of energy available from each flower patch.”
According to the news editors, the research concluded: “Thus, hummingbird body size, aggressive dominance and defence of quality flower patches determines niche partitioning among species.”
For more information on this research see: The role of size and dominance in the feeding behaviour of coexisting hummingbirds. Ibis , 2018;160(2):283-292. Ibis can be contacted at: Wiley, 111 River St, Hoboken 07030-5774, NJ, USA. (Wiley-Blackwell - http://www.wiley.com/; Ibis - http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1474-919X)
The news editors report that additional information may be obtained by contacting M.D. Arizmendi, National Autonomous University of Mexico, UBIPRO Fac Estudios Super Iztacala, Lab Ecol, Tlalnepantla 54090, Edo Mexico, Mexico. Additional authors for this research include R. Bribiesca and G. Lopez-Segoviano.
The direct object identifier (DOI) for that additional information is: https://doi.org/10.1111/ibi.12543. This DOI is a link to an online electronic document that is either free or for purchase, and can be your direct source for a journal article and its citation.
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2018, NewsRx LLC
CITATION: (2018-04-03), National Autonomous University of Mexico Details Findings in Avian Research (The role of size and dominance in the feeding behaviour of coexisting hummingbirds), Life Science Weekly, 1730, ISSN: 1552-2474, BUTTER® ID: 015413859
From the newsletter Life Science Weekly.
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