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Bromélias e beija-flores: um modelo observacional para testar hipóteses sobre correlações e adaptações morfológicas recíprocas

Authors: Capucho, Liana Carneiro; Dalcolmo, Suely; Formigoni, Tiago de Holanda; Silva, Ary Gomes da;

Bromélias e beija-flores: um modelo observacional para testar hipóteses sobre correlações e adaptações morfológicas recíprocas

Abstract

Resumo Muitas angiospermas dependem da ação de animais para sua polinização. Embora a maioria das interações entre plantas e polinizadores não aparentem ser tão peculiares,de certa forma, parecem envolver algum grau de adaptação mútua de flor e animal. A morfologia floral é um dos mais importantes aspectos de interações planta-polinizador, pois determina a acessibilidade do polinizador ao néctar e a eficiência da deposição do pólen no corpo do polinizador e da aquisição do pólen pelo estigma. O presente trabalho pretende propor e validar uma metodologia que permita testar hipóteses quanto à existência de correlação morfológica entre flores e polinizadores. Uma abordagem de análise de série temporal foi proposta como medida de esforço observacional e a morfometria de comprimento e curvatura de corolas de bromélias e bicos de beija-flores foram utilizados como descritores para um teste de ajustamento, realizado por regressão logística. Em pequena escala, envolvendo quatro espécies de bromélias e sete de beija-flores, resultados levaram à rejeição da hipótese da existência de restrições morfológicas exercidas pelas bromélias no sentido de selecionar beija-flores pelo comprimento ou pela curvatura de seus bicos.

Keywords

Source: Biodiversity Heritage Library, vertebrados, pollination, QH301-705.5, logistic regression, regressão logística, Botany, angiospermas, Biodiversity, Source: https://biodiversitylibrary.org, animal-plant interaction, interações animal-planta, QK1-989, Source: BHL, BHL-Corpus, polinização, Biology (General), angiosperms, vertebrates

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green
gold