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Feeding habits and sympatry of flower piercers (Diglossia) in an Andean forest of Nariño

Hábitos alimenticios y simpatrí­a de tres robamieles (Diglossa) en un bosque andino de Nariño;
Hábitos alimentares e simpatría de perfuradores de flores (diglossia) em uma floresta andina de Nariño

dc.creatorMontenegro Muñoz, Silvia Alexandra
dc.creatorÁlvarez Ordóñez, Sandra Lorena
dc.creatorCalderón Leytón, Jhon Jairo
dc.creatorNoguera Urbano, Elkin A.
dc.date2022-08-08
dc.date.accessioned2022-09-20T14:47:05Z
dc.date.available2022-09-20T14:47:05Z
dc.identifierhttps://revistas.umariana.edu.co/index.php/unimar/article/view/914
dc.identifier.urihttps://hdl.handle.net/20.500.14112/25732
dc.descriptionFlower piercers (Diglossia) have a modification in the bill tip like a hook, which is used for drilling a hole in the corolla of flowers and obtaining the nectar. These birds share morphological similarities among them, but they are in inter-specific competition in the Andean forest. However, it is little the knowledge about the feeding strategies that they use to mitigate the interspecific competition. Thegoal of this study was to describe the strategies that three species of flower piercers (Diglossa humeralis,D. lafresnayii y D. cyanea) use to avoid competition for feeding resources in an Andean forest from Nariño. We made field direct observations of some individuals of Diglossa to describe the feeding strategies. Moreover, fecal samples of the three species were collected to study their preys. We found that the three species of flower piercers had similar forms of obtaining nectar, but they select some species of plants and type of p r e y. D. humeralis is much more generalist than D. lafresnayii and D. cyanea, which have lower amplitude in their feeding resources. This suggests that differences in the richness of food resources of the three species, their temporal geographic exclusion and morphological adaptations of the bill allow them occupying the same geographic area and being sympatric.en-US
dc.descriptionLos pinchaflores (Diglossas) se caracterizan por tener el pico con forma de gancho, el cual usan para perforar las flores y robar el néctar. Pese a sus similitudes morfológicas, habitan en competencia interespecífica en los bosques andinos. Hasta el momento se sabe poco sobre las estrategias de alimentación que les permiten mitigar la competencia. En este estudio se describe las estrategias que utilizan tres especies de pinchaflores (Diglossa humeralis, D. lafresnayii y D. cyanea) para evitar la competencia por recursos alimenticios en un bos-que alto andino de Nariño. Para ello se realizó avistamientos en campo, y se colectó muestras fecales de los pinchaflores para describir sus presas. Se encontró que las tres especies tienen formas similares de acceder al néctar, pero poseen preferencias en las especies vegetales y tipo de presas. D. humeralis es mucho más generalista, mientras que D. lafresnayii y D. cyanea tienen menor amplitud en su alimento. Esto sugiere que las diferencias en la riqueza de los recursos alimenticios que toman las tres especies, la exclusión geográfica temporal y las adaptaciones morfológicas del pico, les permiten ser simpátricas.spa
dc.descriptionOs pinchaflores (Diglossas) são caracterizados por o bico em forma de gancho, o qual é utilizado para a perfuração das flores e roubar o néctar. Apesar de suas semelhanças morfológicas, eles vivem na competição interespecífica nas florestas andinas. Até agora, pouco se sabe sobre as técnicas de alimentação que lhes permitam atenuar a competição. Este estudo descreve as técnicas utilizadas por três espécies do pinchaflores (D. humeralis, D. lafresnayii e D. cyanea) para evitar a competição por recursos alimentares em uma floresta andina alta de Nariño. Nós usamos avistamentos no campo e coleta de amostras fecais dos pinchaflores para descrever suas presas. Nós descobrimos que as três espécies têm formas semelhantes de acesso ao néctar, mas eles têm preferências em espécies de plantas e tipo de presa. D. humeralis é muito mais geral, enquanto D. lafresnayii e D. cyanea ter menos fontes de alimento. Isto sugere que a simpatría é suportada por diferenças na riqueza de recursos alimentares, exclusão geográfica temporária e morfologia de pico das três espécies.pt-BR
dc.formatapplication/pdf
dc.languagespa
dc.publisherUniversidad Marianaspa
dc.relationhttps://revistas.umariana.edu.co/index.php/unimar/article/view/914/pdf_29
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dc.rightsDerechos de autor 2022 Revista UNIMARspa
dc.rightshttps://creativecommons.org/licenses/by/4.0spa
dc.sourceRevista UNIMAR; Vol. 33 No. 1 (2015): Revista UNIMAR - Enero - Junio; 215-227en-US
dc.sourceRevista UNIMAR; Vol. 33 Núm. 1 (2015): Revista UNIMAR - Enero - Junio; 215-227spa
dc.sourceRevista UNIMAR; v. 33 n. 1 (2015): Revista UNIMAR - Enero - Junio; 215-227pt-BR
dc.source2216-0116
dc.source0120-4327
dc.subjectAndesspa
dc.subjectcompetenciaspa
dc.subjecthábitos alimenticiosspa
dc.subjectpinchafloresspa
dc.subjectsimpatríaspa
dc.subjectAndesen-US
dc.subjectcompetenceen-US
dc.subjectfeeding habitsen-US
dc.subjectflower piercersen-US
dc.subjectsympatryen-US
dc.subjectAndespt-BR
dc.subjectcompetênciapt-BR
dc.subjecthábitos alimentarespt-BR
dc.subjectpinchaflorespt-BR
dc.subjectsimpatríapt-BR
dc.titleFeeding habits and sympatry of flower piercers (Diglossia) in an Andean forest of Nariñoen-US
dc.titleHábitos alimenticios y simpatrí­a de tres robamieles (Diglossa) en un bosque andino de Nariñospa
dc.titleHábitos alimentares e simpatría de perfuradores de flores (diglossia) em uma floresta andina de Nariñopt-BR
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typeTextospa
dc.coverageColombiaspa


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