| Extensive consumption of Tabebuia aurea (Manso) Benth. & Hook. (Bignoniaceae) nectar by parrots in a Tecoma savanna in the southern Pantanal (Brazil). | |
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MedLine Citation:
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PMID: 16097737 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Neotropical parrots forage for various food items such as seeds, fruit pulp, flowers, young leaves, and even arthropods. While foraging, many species wander over large areas that include both open and closed habitats. In this study, I examined parrot foraging activity during a brief synchronous and massive flowering in August 1998 in a tecoma savanna (dominated by Tabebuia aurea) in the southern Pantanal. Six parrot species, ranging from the small Brotogeris chiriri to the large Amazona aestiva, foraged for T. aurea nectar, but Nandayus nenday was by far the major nectar consumer, and the results of each of their visits, like those of the other species, was damage of a substantial proportion of the existing flower crop. Parrots foraged mostly during the afternoon, when nectar concentration tended to be higher. Nevertheless, compared to bird-pollinated flowers, which produce copious nectar, T. aurea had a smaller mean nectar volume per flower. Hence, presumably the amount of damage wreaked by these parrots resulted from their efforts to obtain part of their daily energy and water requirements. Thus, the synchronous and massive flowering occurring in such a brief period in the dry season may be related to, among other factors, the necessity of satiating predators such as parrots, which are still abundant in the Pantanal. |
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Authors:
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J Ragusa-Netro |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Brazilian journal of biology = Revista brasleira de biologia Volume: 65 ISSN: 1519-6984 ISO Abbreviation: Braz J Biol Publication Date: 2005 May |
Date Detail:
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Created Date: 2005-08-15 Completed Date: 2005-11-08 Revised Date: 2007-09-06 |
Medline Journal Info:
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Nlm Unique ID: 101129542 Medline TA: Braz J Biol Country: Brazil |
Other Details:
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Languages: eng Pagination: 339-44 Citation Subset: IM |
Affiliation:
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Departamento de Ciências Naturais, Campus Três Lagoas, UFMS, C.P. 210, CEP 79600-000, Tres Lagoas, MS, Brazil. forpus@ceul.ufms.br |
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Brazil Feeding Behavior / physiology* Flowers Parakeets / physiology Parrots / physiology* Pollen* Seasons Tabebuia* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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